1588 lines
51 KiB
Plaintext
1588 lines
51 KiB
Plaintext
#***************************************************************************
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# _ _ ____ _
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# Project ___| | | | _ \| |
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# / __| | | | |_) | |
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# | (__| |_| | _ <| |___
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# \___|\___/|_| \_\_____|
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#
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# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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#
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# This software is licensed as described in the file COPYING, which
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# you should have received as part of this distribution. The terms
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# are also available at https://curl.se/docs/copyright.html.
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#
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# You may opt to use, copy, modify, merge, publish, distribute and/or sell
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# copies of the Software, and permit persons to whom the Software is
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# furnished to do so, under the terms of the COPYING file.
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#
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# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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# KIND, either express or implied.
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#
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# SPDX-License-Identifier: curl
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#
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#***************************************************************************
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# File version for 'aclocal' use. Keep it a single number.
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# serial 67
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dnl CURL_CHECK_COMPILER
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dnl -------------------------------------------------
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dnl Verify if the C compiler being used is known.
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AC_DEFUN([CURL_CHECK_COMPILER], [
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#
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compiler_id="unknown"
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compiler_num="0"
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#
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flags_dbg_yes="unknown"
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flags_opt_all="unknown"
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flags_opt_yes="unknown"
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flags_opt_off="unknown"
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#
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flags_prefer_cppflags="no"
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#
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CURL_CHECK_COMPILER_DEC_C
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CURL_CHECK_COMPILER_HPUX_C
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CURL_CHECK_COMPILER_IBM_C
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CURL_CHECK_COMPILER_INTEL_C
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CURL_CHECK_COMPILER_CLANG
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CURL_CHECK_COMPILER_GNU_C
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CURL_CHECK_COMPILER_LCC
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CURL_CHECK_COMPILER_SGI_MIPSPRO_C
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CURL_CHECK_COMPILER_SGI_MIPS_C
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CURL_CHECK_COMPILER_SUNPRO_C
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CURL_CHECK_COMPILER_TINY_C
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#
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if test "$compiler_id" = "unknown"; then
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cat <<_EOF 1>&2
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***
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*** Warning: This configure script does not have information about the
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*** compiler you are using, relative to the flags required to enable or
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*** disable generation of debug info, optimization options or warnings.
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***
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*** Whatever settings are present in CFLAGS will be used for this run.
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***
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*** If you wish to help the curl project to better support your compiler
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*** you can report this and the required info on the libcurl development
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*** mailing list: https://lists.haxx.selistinfo/curl-library/
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***
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_EOF
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fi
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])
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dnl CURL_CHECK_COMPILER_CLANG
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dnl -------------------------------------------------
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dnl Verify if compiler being used is clang.
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AC_DEFUN([CURL_CHECK_COMPILER_CLANG], [
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AC_BEFORE([$0],[CURL_CHECK_COMPILER_GNU_C])dnl
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AC_MSG_CHECKING([if compiler is clang])
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CURL_CHECK_DEF([__clang__], [], [silent])
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if test "$curl_cv_have_def___clang__" = "yes"; then
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AC_MSG_RESULT([yes])
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AC_MSG_CHECKING([if compiler is xlclang])
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CURL_CHECK_DEF([__ibmxl__], [], [silent])
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if test "$curl_cv_have_def___ibmxl__" = "yes" ; then
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dnl IBM's almost-compatible clang version
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AC_MSG_RESULT([yes])
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compiler_id="XLCLANG"
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else
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AC_MSG_RESULT([no])
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compiler_id="CLANG"
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fi
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fullclangver=`$CC -v 2>&1 | grep version`
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clangver=`echo $fullclangver | grep "based on LLVM " | "$SED" 's/.*(based on LLVM \(@<:@0-9@:>@*\.@<:@0-9@:>@*\).*)/\1/'`
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if test -z "$clangver"; then
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if echo $fullclangver | grep "Apple LLVM version " >/dev/null; then
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dnl Starting with XCode 7 / clang 3.7, Apple clang won't tell its upstream version
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clangver="3.7"
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else
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clangver=`echo $fullclangver | "$SED" 's/.*version \(@<:@0-9@:>@*\.@<:@0-9@:>@*\).*/\1/'`
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fi
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fi
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clangvhi=`echo $clangver | cut -d . -f1`
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clangvlo=`echo $clangver | cut -d . -f2`
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compiler_num=`(expr $clangvhi "*" 100 + $clangvlo) 2>/dev/null`
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flags_dbg_yes="-g"
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flags_opt_all="-O -O0 -O1 -O2 -Os -O3 -O4"
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flags_opt_yes="-O2"
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flags_opt_off="-O0"
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else
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AC_MSG_RESULT([no])
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fi
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])
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dnl CURL_CHECK_COMPILER_DEC_C
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dnl -------------------------------------------------
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dnl Verify if compiler being used is DEC C.
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AC_DEFUN([CURL_CHECK_COMPILER_DEC_C], [
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AC_MSG_CHECKING([if compiler is DEC/Compaq/HP C])
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CURL_CHECK_DEF([__DECC], [], [silent])
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CURL_CHECK_DEF([__DECC_VER], [], [silent])
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if test "$curl_cv_have_def___DECC" = "yes" &&
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test "$curl_cv_have_def___DECC_VER" = "yes"; then
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AC_MSG_RESULT([yes])
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compiler_id="DEC_C"
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flags_dbg_yes="-g2"
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flags_opt_all="-O -O0 -O1 -O2 -O3 -O4"
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flags_opt_yes="-O1"
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flags_opt_off="-O0"
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else
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AC_MSG_RESULT([no])
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fi
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])
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dnl CURL_CHECK_COMPILER_GNU_C
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dnl -------------------------------------------------
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dnl Verify if compiler being used is GNU C
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dnl
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dnl $compiler_num will be set to MAJOR * 100 + MINOR for gcc less than version
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dnl 7 and just $MAJOR * 100 for gcc version 7 and later.
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dnl
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dnl Examples:
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dnl Version 1.2.3 => 102
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dnl Version 2.95 => 295
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dnl Version 4.7 => 407
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dnl Version 9.2.1 => 900
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dnl
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AC_DEFUN([CURL_CHECK_COMPILER_GNU_C], [
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AC_REQUIRE([CURL_CHECK_COMPILER_INTEL_C])dnl
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AC_REQUIRE([CURL_CHECK_COMPILER_CLANG])dnl
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AC_MSG_CHECKING([if compiler is GNU C])
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CURL_CHECK_DEF([__GNUC__], [], [silent])
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if test "$curl_cv_have_def___GNUC__" = "yes" &&
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test "$compiler_id" = "unknown"; then
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AC_MSG_RESULT([yes])
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compiler_id="GNU_C"
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gccver=`$CC -dumpversion`
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gccvhi=`echo $gccver | cut -d . -f1`
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gccvlo=`echo $gccver | cut -d . -f2`
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compiler_num=`(expr $gccvhi "*" 100 + $gccvlo) 2>/dev/null`
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flags_dbg_yes="-g"
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flags_opt_all="-O -O0 -O1 -O2 -O3 -Os -Og -Ofast"
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flags_opt_yes="-O2"
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flags_opt_off="-O0"
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CURL_CHECK_DEF([_WIN32], [], [silent])
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else
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AC_MSG_RESULT([no])
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fi
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])
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dnl CURL_CHECK_COMPILER_HPUX_C
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dnl -------------------------------------------------
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dnl Verify if compiler being used is HP-UX C.
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AC_DEFUN([CURL_CHECK_COMPILER_HPUX_C], [
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AC_MSG_CHECKING([if compiler is HP-UX C])
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CURL_CHECK_DEF([__HP_cc], [], [silent])
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if test "$curl_cv_have_def___HP_cc" = "yes"; then
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AC_MSG_RESULT([yes])
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compiler_id="HP_UX_C"
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flags_dbg_yes="-g"
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flags_opt_all="-O +O0 +O1 +O2 +O3 +O4"
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flags_opt_yes="+O2"
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flags_opt_off="+O0"
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else
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AC_MSG_RESULT([no])
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fi
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])
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dnl CURL_CHECK_COMPILER_IBM_C
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dnl -------------------------------------------------
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dnl Verify if compiler being used is IBM C.
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AC_DEFUN([CURL_CHECK_COMPILER_IBM_C], [
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AC_MSG_CHECKING([if compiler is IBM C])
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CURL_CHECK_DEF([__IBMC__], [], [silent])
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if test "$curl_cv_have_def___IBMC__" = "yes"; then
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AC_MSG_RESULT([yes])
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compiler_id="IBM_C"
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flags_dbg_yes="-g"
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flags_opt_all="-O -O0 -O1 -O2 -O3 -O4 -O5"
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flags_opt_all="$flags_opt_all -qnooptimize"
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flags_opt_all="$flags_opt_all -qoptimize=0"
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flags_opt_all="$flags_opt_all -qoptimize=1"
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flags_opt_all="$flags_opt_all -qoptimize=2"
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flags_opt_all="$flags_opt_all -qoptimize=3"
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flags_opt_all="$flags_opt_all -qoptimize=4"
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flags_opt_all="$flags_opt_all -qoptimize=5"
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flags_opt_yes="-O2"
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flags_opt_off="-qnooptimize"
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flags_prefer_cppflags="yes"
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else
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AC_MSG_RESULT([no])
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fi
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])
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dnl CURL_CHECK_COMPILER_INTEL_C
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dnl -------------------------------------------------
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dnl Verify if compiler being used is Intel C.
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AC_DEFUN([CURL_CHECK_COMPILER_INTEL_C], [
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AC_BEFORE([$0],[CURL_CHECK_COMPILER_GNU_C])dnl
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AC_MSG_CHECKING([if compiler is Intel C])
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CURL_CHECK_DEF([__INTEL_COMPILER], [], [silent])
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if test "$curl_cv_have_def___INTEL_COMPILER" = "yes"; then
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AC_MSG_RESULT([yes])
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compiler_num="$curl_cv_def___INTEL_COMPILER"
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CURL_CHECK_DEF([__unix__], [], [silent])
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if test "$curl_cv_have_def___unix__" = "yes"; then
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compiler_id="INTEL_UNIX_C"
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flags_dbg_yes="-g"
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flags_opt_all="-O -O0 -O1 -O2 -O3 -Os"
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flags_opt_yes="-O2"
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flags_opt_off="-O0"
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else
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compiler_id="INTEL_WINDOWS_C"
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flags_dbg_yes="/Zi /Oy-"
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flags_opt_all="/O /O0 /O1 /O2 /O3 /Od /Og /Og- /Oi /Oi-"
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flags_opt_yes="/O2"
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flags_opt_off="/Od"
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fi
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else
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AC_MSG_RESULT([no])
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fi
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])
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dnl CURL_CHECK_COMPILER_LCC
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dnl -------------------------------------------------
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dnl Verify if compiler being used is LCC.
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AC_DEFUN([CURL_CHECK_COMPILER_LCC], [
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AC_MSG_CHECKING([if compiler is LCC])
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CURL_CHECK_DEF([__LCC__], [], [silent])
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if test "$curl_cv_have_def___LCC__" = "yes"; then
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AC_MSG_RESULT([yes])
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compiler_id="LCC"
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flags_dbg_yes="-g"
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flags_opt_all=""
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flags_opt_yes=""
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flags_opt_off=""
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else
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AC_MSG_RESULT([no])
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fi
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])
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dnl CURL_CHECK_COMPILER_SGI_MIPS_C
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dnl -------------------------------------------------
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dnl Verify if compiler being used is SGI MIPS C.
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AC_DEFUN([CURL_CHECK_COMPILER_SGI_MIPS_C], [
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AC_REQUIRE([CURL_CHECK_COMPILER_SGI_MIPSPRO_C])dnl
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AC_MSG_CHECKING([if compiler is SGI MIPS C])
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CURL_CHECK_DEF([__GNUC__], [], [silent])
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CURL_CHECK_DEF([__sgi], [], [silent])
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if test "$curl_cv_have_def___GNUC__" = "no" &&
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test "$curl_cv_have_def___sgi" = "yes" &&
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test "$compiler_id" = "unknown"; then
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AC_MSG_RESULT([yes])
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compiler_id="SGI_MIPS_C"
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flags_dbg_yes="-g"
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flags_opt_all="-O -O0 -O1 -O2 -O3 -Ofast"
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flags_opt_yes="-O2"
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flags_opt_off="-O0"
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else
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AC_MSG_RESULT([no])
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fi
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])
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dnl CURL_CHECK_COMPILER_SGI_MIPSPRO_C
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dnl -------------------------------------------------
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dnl Verify if compiler being used is SGI MIPSpro C.
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AC_DEFUN([CURL_CHECK_COMPILER_SGI_MIPSPRO_C], [
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AC_BEFORE([$0],[CURL_CHECK_COMPILER_SGI_MIPS_C])dnl
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AC_MSG_CHECKING([if compiler is SGI MIPSpro C])
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CURL_CHECK_DEF([__GNUC__], [], [silent])
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CURL_CHECK_DEF([_COMPILER_VERSION], [], [silent])
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CURL_CHECK_DEF([_SGI_COMPILER_VERSION], [], [silent])
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if test "$curl_cv_have_def___GNUC__" = "no" &&
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(test "$curl_cv_have_def__SGI_COMPILER_VERSION" = "yes" ||
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test "$curl_cv_have_def__COMPILER_VERSION" = "yes"); then
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AC_MSG_RESULT([yes])
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compiler_id="SGI_MIPSPRO_C"
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flags_dbg_yes="-g"
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flags_opt_all="-O -O0 -O1 -O2 -O3 -Ofast"
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flags_opt_yes="-O2"
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flags_opt_off="-O0"
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else
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AC_MSG_RESULT([no])
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fi
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])
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dnl CURL_CHECK_COMPILER_SUNPRO_C
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dnl -------------------------------------------------
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dnl Verify if compiler being used is SunPro C.
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AC_DEFUN([CURL_CHECK_COMPILER_SUNPRO_C], [
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AC_MSG_CHECKING([if compiler is SunPro C])
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CURL_CHECK_DEF([__SUNPRO_C], [], [silent])
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if test "$curl_cv_have_def___SUNPRO_C" = "yes"; then
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AC_MSG_RESULT([yes])
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compiler_id="SUNPRO_C"
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flags_dbg_yes="-g"
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flags_opt_all="-O -xO -xO1 -xO2 -xO3 -xO4 -xO5"
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flags_opt_yes="-xO2"
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flags_opt_off=""
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else
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AC_MSG_RESULT([no])
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fi
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])
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dnl CURL_CHECK_COMPILER_TINY_C
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dnl -------------------------------------------------
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dnl Verify if compiler being used is Tiny C.
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AC_DEFUN([CURL_CHECK_COMPILER_TINY_C], [
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AC_MSG_CHECKING([if compiler is Tiny C])
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CURL_CHECK_DEF([__TINYC__], [], [silent])
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if test "$curl_cv_have_def___TINYC__" = "yes"; then
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AC_MSG_RESULT([yes])
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compiler_id="TINY_C"
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flags_dbg_yes="-g"
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flags_opt_all=""
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flags_opt_yes=""
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flags_opt_off=""
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else
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AC_MSG_RESULT([no])
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fi
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])
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dnl CURL_CONVERT_INCLUDE_TO_ISYSTEM
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dnl -------------------------------------------------
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dnl Changes standard include paths present in CFLAGS
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dnl and CPPFLAGS into isystem include paths. This is
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dnl done to prevent GNUC from generating warnings on
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dnl headers from these locations, although on ancient
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dnl GNUC versions these warnings are not silenced.
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AC_DEFUN([CURL_CONVERT_INCLUDE_TO_ISYSTEM], [
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AC_REQUIRE([CURL_SHFUNC_SQUEEZE])dnl
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AC_REQUIRE([CURL_CHECK_COMPILER])dnl
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AC_MSG_CHECKING([convert -I options to -isystem])
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if test "$compiler_id" = "GNU_C" ||
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test "$compiler_id" = "CLANG"; then
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AC_MSG_RESULT([yes])
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tmp_has_include="no"
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tmp_chg_FLAGS="$CFLAGS"
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for word1 in $tmp_chg_FLAGS; do
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case "$word1" in
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-I*)
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tmp_has_include="yes"
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;;
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esac
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done
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if test "$tmp_has_include" = "yes"; then
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tmp_chg_FLAGS=`echo "$tmp_chg_FLAGS" | "$SED" 's/^-I/ -isystem /g'`
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tmp_chg_FLAGS=`echo "$tmp_chg_FLAGS" | "$SED" 's/ -I/ -isystem /g'`
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CFLAGS="$tmp_chg_FLAGS"
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squeeze CFLAGS
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fi
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tmp_has_include="no"
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tmp_chg_FLAGS="$CPPFLAGS"
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for word1 in $tmp_chg_FLAGS; do
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case "$word1" in
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-I*)
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tmp_has_include="yes"
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;;
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esac
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done
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if test "$tmp_has_include" = "yes"; then
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tmp_chg_FLAGS=`echo "$tmp_chg_FLAGS" | "$SED" 's/^-I/ -isystem /g'`
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tmp_chg_FLAGS=`echo "$tmp_chg_FLAGS" | "$SED" 's/ -I/ -isystem /g'`
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CPPFLAGS="$tmp_chg_FLAGS"
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squeeze CPPFLAGS
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fi
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else
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AC_MSG_RESULT([no])
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fi
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])
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dnl CURL_COMPILER_WORKS_IFELSE ([ACTION-IF-WORKS], [ACTION-IF-NOT-WORKS])
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|
dnl -------------------------------------------------
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dnl Verify if the C compiler seems to work with the
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dnl settings that are 'active' at the time the test
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dnl is performed.
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AC_DEFUN([CURL_COMPILER_WORKS_IFELSE], [
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dnl compilation capability verification
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tmp_compiler_works="unknown"
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AC_COMPILE_IFELSE([
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AC_LANG_PROGRAM([[
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]],[[
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int i = 1;
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return i;
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]])
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],[
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tmp_compiler_works="yes"
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],[
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tmp_compiler_works="no"
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|
echo " " >&6
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sed 's/^/cc-fail: /' conftest.err >&6
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echo " " >&6
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])
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dnl linking capability verification
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|
if test "$tmp_compiler_works" = "yes"; then
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AC_LINK_IFELSE([
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AC_LANG_PROGRAM([[
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]],[[
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int i = 1;
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return i;
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]])
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],[
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tmp_compiler_works="yes"
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],[
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tmp_compiler_works="no"
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echo " " >&6
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sed 's/^/link-fail: /' conftest.err >&6
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echo " " >&6
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])
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fi
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dnl only do runtime verification when not cross-compiling
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|
if test "x$cross_compiling" != "xyes" &&
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test "$tmp_compiler_works" = "yes"; then
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|
CURL_RUN_IFELSE([
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AC_LANG_PROGRAM([[
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|
# ifdef __STDC__
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|
# include <stdlib.h>
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|
# endif
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|
]],[[
|
|
int i = 0;
|
|
exit(i);
|
|
]])
|
|
],[
|
|
tmp_compiler_works="yes"
|
|
],[
|
|
tmp_compiler_works="no"
|
|
echo " " >&6
|
|
echo "run-fail: test program exited with status $ac_status" >&6
|
|
echo " " >&6
|
|
])
|
|
fi
|
|
dnl branch upon test result
|
|
if test "$tmp_compiler_works" = "yes"; then
|
|
ifelse($1,,:,[$1])
|
|
ifelse($2,,,[else
|
|
$2])
|
|
fi
|
|
])
|
|
|
|
|
|
dnl CURL_SET_COMPILER_BASIC_OPTS
|
|
dnl -------------------------------------------------
|
|
dnl Sets compiler specific options/flags which do not
|
|
dnl depend on configure's debug, optimize or warnings
|
|
dnl options.
|
|
|
|
AC_DEFUN([CURL_SET_COMPILER_BASIC_OPTS], [
|
|
AC_REQUIRE([CURL_CHECK_COMPILER])dnl
|
|
AC_REQUIRE([CURL_SHFUNC_SQUEEZE])dnl
|
|
#
|
|
if test "$compiler_id" != "unknown"; then
|
|
#
|
|
tmp_save_CPPFLAGS="$CPPFLAGS"
|
|
tmp_save_CFLAGS="$CFLAGS"
|
|
tmp_CPPFLAGS=""
|
|
tmp_CFLAGS=""
|
|
#
|
|
case "$compiler_id" in
|
|
#
|
|
CLANG)
|
|
#
|
|
dnl Disable warnings for unused arguments, otherwise clang will
|
|
dnl warn about compile-time arguments used during link-time, like
|
|
dnl -O and -g and -pedantic.
|
|
tmp_CFLAGS="$tmp_CFLAGS -Qunused-arguments"
|
|
;;
|
|
#
|
|
DEC_C)
|
|
#
|
|
dnl Select strict ANSI C compiler mode
|
|
tmp_CFLAGS="$tmp_CFLAGS -std1"
|
|
dnl Turn off optimizer ANSI C aliasing rules
|
|
tmp_CFLAGS="$tmp_CFLAGS -noansi_alias"
|
|
dnl Generate warnings for missing function prototypes
|
|
tmp_CFLAGS="$tmp_CFLAGS -warnprotos"
|
|
dnl Change some warnings into fatal errors
|
|
tmp_CFLAGS="$tmp_CFLAGS -msg_fatal toofewargs,toomanyargs"
|
|
;;
|
|
#
|
|
GNU_C)
|
|
#
|
|
dnl turn implicit-function-declaration warning into error,
|
|
dnl at least gcc 2.95 and later support this
|
|
if test "$compiler_num" -ge "295"; then
|
|
tmp_CFLAGS="$tmp_CFLAGS -Werror-implicit-function-declaration"
|
|
fi
|
|
;;
|
|
#
|
|
HP_UX_C)
|
|
#
|
|
dnl Disallow run-time dereferencing of null pointers
|
|
tmp_CFLAGS="$tmp_CFLAGS -z"
|
|
dnl Disable some remarks
|
|
dnl #4227: padding struct with n bytes to align member
|
|
dnl #4255: padding size of struct with n bytes to alignment boundary
|
|
tmp_CFLAGS="$tmp_CFLAGS +W 4227,4255"
|
|
;;
|
|
#
|
|
IBM_C)
|
|
#
|
|
dnl Ensure that compiler optimizations are always thread-safe.
|
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -qthreaded"
|
|
dnl Disable type based strict aliasing optimizations, using worst
|
|
dnl case aliasing assumptions when compiling. Type based aliasing
|
|
dnl would restrict the lvalues that could be safely used to access
|
|
dnl a data object.
|
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -qnoansialias"
|
|
dnl Force compiler to stop after the compilation phase, without
|
|
dnl generating an object code file when compilation has errors.
|
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -qhalt=e"
|
|
;;
|
|
#
|
|
INTEL_UNIX_C)
|
|
#
|
|
dnl On unix this compiler uses gcc's header files, so
|
|
dnl we select ANSI C89 dialect plus GNU extensions.
|
|
tmp_CFLAGS="$tmp_CFLAGS -std=gnu89"
|
|
dnl Change some warnings into errors
|
|
dnl #140: too many arguments in function call
|
|
dnl #147: declaration is incompatible with 'previous one'
|
|
dnl #165: too few arguments in function call
|
|
dnl #266: function declared implicitly
|
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -diag-error 140,147,165,266"
|
|
dnl Disable some remarks
|
|
dnl #279: controlling expression is constant
|
|
dnl #981: operands are evaluated in unspecified order
|
|
dnl #1025: zero extending result of unary operation
|
|
dnl #1469: "cc" clobber ignored
|
|
dnl #2259: non-pointer conversion from X to Y may lose significant bits
|
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -diag-disable 279,981,1025,1469,2259"
|
|
;;
|
|
#
|
|
INTEL_WINDOWS_C)
|
|
#
|
|
dnl Placeholder
|
|
tmp_CFLAGS="$tmp_CFLAGS"
|
|
;;
|
|
#
|
|
LCC)
|
|
#
|
|
dnl Disallow run-time dereferencing of null pointers
|
|
tmp_CFLAGS="$tmp_CFLAGS -n"
|
|
;;
|
|
#
|
|
SGI_MIPS_C)
|
|
#
|
|
dnl Placeholder
|
|
tmp_CFLAGS="$tmp_CFLAGS"
|
|
;;
|
|
#
|
|
SGI_MIPSPRO_C)
|
|
#
|
|
dnl Placeholder
|
|
tmp_CFLAGS="$tmp_CFLAGS"
|
|
;;
|
|
#
|
|
SUNPRO_C)
|
|
#
|
|
dnl Placeholder
|
|
tmp_CFLAGS="$tmp_CFLAGS"
|
|
;;
|
|
#
|
|
TINY_C)
|
|
#
|
|
dnl Placeholder
|
|
tmp_CFLAGS="$tmp_CFLAGS"
|
|
;;
|
|
#
|
|
esac
|
|
#
|
|
squeeze tmp_CPPFLAGS
|
|
squeeze tmp_CFLAGS
|
|
#
|
|
if test ! -z "$tmp_CFLAGS" || test ! -z "$tmp_CPPFLAGS"; then
|
|
AC_MSG_CHECKING([if compiler accepts some basic options])
|
|
CPPFLAGS="$tmp_save_CPPFLAGS $tmp_CPPFLAGS"
|
|
CFLAGS="$tmp_save_CFLAGS $tmp_CFLAGS"
|
|
squeeze CPPFLAGS
|
|
squeeze CFLAGS
|
|
CURL_COMPILER_WORKS_IFELSE([
|
|
AC_MSG_RESULT([yes])
|
|
AC_MSG_NOTICE([compiler options added: $tmp_CFLAGS $tmp_CPPFLAGS])
|
|
],[
|
|
AC_MSG_RESULT([no])
|
|
AC_MSG_WARN([compiler options rejected: $tmp_CFLAGS $tmp_CPPFLAGS])
|
|
dnl restore initial settings
|
|
CPPFLAGS="$tmp_save_CPPFLAGS"
|
|
CFLAGS="$tmp_save_CFLAGS"
|
|
])
|
|
fi
|
|
#
|
|
fi
|
|
])
|
|
|
|
|
|
dnl CURL_SET_COMPILER_DEBUG_OPTS
|
|
dnl -------------------------------------------------
|
|
dnl Sets compiler specific options/flags which depend
|
|
dnl on configure's debug option.
|
|
|
|
AC_DEFUN([CURL_SET_COMPILER_DEBUG_OPTS], [
|
|
AC_REQUIRE([CURL_CHECK_OPTION_DEBUG])dnl
|
|
AC_REQUIRE([CURL_CHECK_COMPILER])dnl
|
|
AC_REQUIRE([CURL_SHFUNC_SQUEEZE])dnl
|
|
#
|
|
if test "$compiler_id" != "unknown"; then
|
|
#
|
|
tmp_save_CFLAGS="$CFLAGS"
|
|
tmp_save_CPPFLAGS="$CPPFLAGS"
|
|
#
|
|
tmp_options=""
|
|
tmp_CFLAGS="$CFLAGS"
|
|
tmp_CPPFLAGS="$CPPFLAGS"
|
|
#
|
|
if test "$want_debug" = "yes"; then
|
|
AC_MSG_CHECKING([if compiler accepts debug enabling options])
|
|
tmp_options="$flags_dbg_yes"
|
|
fi
|
|
#
|
|
if test "$flags_prefer_cppflags" = "yes"; then
|
|
CPPFLAGS="$tmp_CPPFLAGS $tmp_options"
|
|
CFLAGS="$tmp_CFLAGS"
|
|
else
|
|
CPPFLAGS="$tmp_CPPFLAGS"
|
|
CFLAGS="$tmp_CFLAGS $tmp_options"
|
|
fi
|
|
squeeze CPPFLAGS
|
|
squeeze CFLAGS
|
|
fi
|
|
])
|
|
|
|
|
|
dnl CURL_SET_COMPILER_OPTIMIZE_OPTS
|
|
dnl -------------------------------------------------
|
|
dnl Sets compiler specific options/flags which depend
|
|
dnl on configure's optimize option.
|
|
|
|
AC_DEFUN([CURL_SET_COMPILER_OPTIMIZE_OPTS], [
|
|
AC_REQUIRE([CURL_CHECK_OPTION_OPTIMIZE])dnl
|
|
AC_REQUIRE([CURL_CHECK_COMPILER])dnl
|
|
AC_REQUIRE([CURL_SHFUNC_SQUEEZE])dnl
|
|
#
|
|
if test "$compiler_id" != "unknown"; then
|
|
#
|
|
tmp_save_CFLAGS="$CFLAGS"
|
|
tmp_save_CPPFLAGS="$CPPFLAGS"
|
|
#
|
|
tmp_options=""
|
|
tmp_CFLAGS="$CFLAGS"
|
|
tmp_CPPFLAGS="$CPPFLAGS"
|
|
honor_optimize_option="yes"
|
|
#
|
|
dnl If optimization request setting has not been explicitly specified,
|
|
dnl it has been derived from the debug setting and initially assumed.
|
|
dnl This initially assumed optimizer setting will finally be ignored
|
|
dnl if CFLAGS or CPPFLAGS already hold optimizer flags. This implies
|
|
dnl that an initially assumed optimizer setting might not be honored.
|
|
#
|
|
if test "$want_optimize" = "assume_no" ||
|
|
test "$want_optimize" = "assume_yes"; then
|
|
AC_MSG_CHECKING([if compiler optimizer assumed setting might be used])
|
|
CURL_VAR_MATCH_IFELSE([tmp_CFLAGS],[$flags_opt_all],[
|
|
honor_optimize_option="no"
|
|
])
|
|
CURL_VAR_MATCH_IFELSE([tmp_CPPFLAGS],[$flags_opt_all],[
|
|
honor_optimize_option="no"
|
|
])
|
|
AC_MSG_RESULT([$honor_optimize_option])
|
|
if test "$honor_optimize_option" = "yes"; then
|
|
if test "$want_optimize" = "assume_yes"; then
|
|
want_optimize="yes"
|
|
fi
|
|
if test "$want_optimize" = "assume_no"; then
|
|
want_optimize="no"
|
|
fi
|
|
fi
|
|
fi
|
|
#
|
|
if test "$honor_optimize_option" = "yes"; then
|
|
CURL_VAR_STRIP([tmp_CFLAGS],[$flags_opt_all])
|
|
CURL_VAR_STRIP([tmp_CPPFLAGS],[$flags_opt_all])
|
|
if test "$want_optimize" = "yes"; then
|
|
AC_MSG_CHECKING([if compiler accepts optimizer enabling options])
|
|
tmp_options="$flags_opt_yes"
|
|
fi
|
|
if test "$want_optimize" = "no"; then
|
|
AC_MSG_CHECKING([if compiler accepts optimizer disabling options])
|
|
tmp_options="$flags_opt_off"
|
|
fi
|
|
if test "$flags_prefer_cppflags" = "yes"; then
|
|
CPPFLAGS="$tmp_CPPFLAGS $tmp_options"
|
|
CFLAGS="$tmp_CFLAGS"
|
|
else
|
|
CPPFLAGS="$tmp_CPPFLAGS"
|
|
CFLAGS="$tmp_CFLAGS $tmp_options"
|
|
fi
|
|
squeeze CPPFLAGS
|
|
squeeze CFLAGS
|
|
CURL_COMPILER_WORKS_IFELSE([
|
|
AC_MSG_RESULT([yes])
|
|
AC_MSG_NOTICE([compiler options added: $tmp_options])
|
|
],[
|
|
AC_MSG_RESULT([no])
|
|
AC_MSG_WARN([compiler options rejected: $tmp_options])
|
|
dnl restore initial settings
|
|
CPPFLAGS="$tmp_save_CPPFLAGS"
|
|
CFLAGS="$tmp_save_CFLAGS"
|
|
])
|
|
fi
|
|
#
|
|
fi
|
|
])
|
|
|
|
|
|
dnl CURL_SET_COMPILER_WARNING_OPTS
|
|
dnl -------------------------------------------------
|
|
dnl Sets compiler options/flags which depend on
|
|
dnl configure's warnings given option.
|
|
|
|
AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
|
|
AC_REQUIRE([CURL_CHECK_OPTION_WARNINGS])dnl
|
|
AC_REQUIRE([CURL_CHECK_COMPILER])dnl
|
|
AC_REQUIRE([CURL_SHFUNC_SQUEEZE])dnl
|
|
#
|
|
if test "$compiler_id" != "unknown"; then
|
|
#
|
|
tmp_save_CPPFLAGS="$CPPFLAGS"
|
|
tmp_save_CFLAGS="$CFLAGS"
|
|
tmp_CPPFLAGS=""
|
|
tmp_CFLAGS=""
|
|
#
|
|
case "$compiler_id" in
|
|
#
|
|
CLANG)
|
|
#
|
|
if test "$want_warnings" = "yes"; then
|
|
tmp_CFLAGS="$tmp_CFLAGS -pedantic"
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [all extra])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [pointer-arith write-strings])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [shadow])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [inline nested-externs])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [missing-declarations])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [missing-prototypes])
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-long-long"
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [float-equal])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [no-multichar sign-compare])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [undef])
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-format-nonliteral"
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [endif-labels strict-prototypes])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [declaration-after-statement])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [cast-align])
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-system-headers"
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [shorten-64-to-32])
|
|
#
|
|
dnl Only clang 1.1 or later
|
|
if test "$compiler_num" -ge "101"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [unused])
|
|
fi
|
|
#
|
|
dnl Only clang 2.8 or later
|
|
if test "$compiler_num" -ge "208"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [vla])
|
|
fi
|
|
#
|
|
dnl Only clang 2.9 or later
|
|
if test "$compiler_num" -ge "209"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [shift-sign-overflow])
|
|
fi
|
|
#
|
|
dnl Only clang 3.0 or later (possibly earlier)
|
|
if test "$compiler_num" -ge "300"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [bad-function-cast])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [conversion])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [empty-body])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [ignored-qualifiers])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [type-limits])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [no-sign-conversion])
|
|
fi
|
|
#
|
|
dnl Only clang 3.2 or later
|
|
if test "$compiler_num" -ge "302"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [enum-conversion])
|
|
case $host_os in
|
|
cygwin* | mingw*)
|
|
dnl skip missing-variable-declarations warnings for cygwin and
|
|
dnl mingw because the libtool wrapper executable causes them
|
|
;;
|
|
*)
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [missing-variable-declarations])
|
|
;;
|
|
esac
|
|
fi
|
|
#
|
|
dnl Only clang 3.4 or later
|
|
if test "$compiler_num" -ge "304"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [unused-const-variable])
|
|
fi
|
|
#
|
|
dnl Only clang 3.6 or later
|
|
if test "$compiler_num" -ge "306"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [double-promotion])
|
|
fi
|
|
#
|
|
dnl Only clang 3.9 or later
|
|
if test "$compiler_num" -ge "309"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [comma])
|
|
# avoid the varargs warning, fixed in 4.0
|
|
# https://bugs.llvm.org/show_bug.cgi?id=29140
|
|
if test "$compiler_num" -lt "400"; then
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-varargs"
|
|
fi
|
|
fi
|
|
dnl clang 7 or later
|
|
if test "$compiler_num" -ge "700"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [assign-enum])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [extra-semi-stmt])
|
|
fi
|
|
fi
|
|
dnl Disable pointer to bool conversion warnings since they cause
|
|
dnl lib/securetransp.c cause several warnings for checks we want.
|
|
dnl This option should be placed after -Wconversion.
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-pointer-bool-conversion"
|
|
;;
|
|
#
|
|
DEC_C)
|
|
#
|
|
if test "$want_warnings" = "yes"; then
|
|
dnl Select a higher warning level than default level2
|
|
tmp_CFLAGS="$tmp_CFLAGS -msg_enable level3"
|
|
fi
|
|
;;
|
|
#
|
|
GNU_C)
|
|
#
|
|
if test "$want_warnings" = "yes"; then
|
|
tmp_CFLAGS="$tmp_CFLAGS -std=gnu89"
|
|
#
|
|
dnl Do not enable -pedantic when cross-compiling with a gcc older
|
|
dnl than 3.0, to avoid warnings from third party system headers.
|
|
if test "x$cross_compiling" != "xyes" ||
|
|
test "$compiler_num" -ge "300"; then
|
|
tmp_CFLAGS="$tmp_CFLAGS -pedantic"
|
|
fi
|
|
#
|
|
dnl Set of options we believe *ALL* gcc versions support:
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [all])
|
|
tmp_CFLAGS="$tmp_CFLAGS -W"
|
|
#
|
|
dnl Only gcc 1.4 or later
|
|
if test "$compiler_num" -ge "104"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [pointer-arith write-strings])
|
|
dnl If not cross-compiling with a gcc older than 3.0
|
|
if test "x$cross_compiling" != "xyes" ||
|
|
test "$compiler_num" -ge "300"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [unused shadow])
|
|
fi
|
|
fi
|
|
#
|
|
dnl Only gcc 2.7 or later
|
|
if test "$compiler_num" -ge "207"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [inline nested-externs])
|
|
dnl If not cross-compiling with a gcc older than 3.0
|
|
if test "x$cross_compiling" != "xyes" ||
|
|
test "$compiler_num" -ge "300"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [missing-declarations])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [missing-prototypes])
|
|
fi
|
|
fi
|
|
#
|
|
dnl Only gcc 2.95 or later
|
|
if test "$compiler_num" -ge "295"; then
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-long-long"
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [bad-function-cast])
|
|
fi
|
|
#
|
|
dnl Only gcc 2.96 or later
|
|
if test "$compiler_num" -ge "296"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [float-equal])
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-multichar"
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [sign-compare])
|
|
dnl -Wundef used only if gcc is 2.96 or later since we get
|
|
dnl lots of "`_POSIX_C_SOURCE' is not defined" in system
|
|
dnl headers with gcc 2.95.4 on FreeBSD 4.9
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [undef])
|
|
fi
|
|
#
|
|
dnl Only gcc 2.97 or later
|
|
if test "$compiler_num" -ge "297"; then
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-format-nonliteral"
|
|
fi
|
|
#
|
|
dnl Only gcc 3.0 or later
|
|
if test "$compiler_num" -ge "300"; then
|
|
dnl -Wunreachable-code seems totally unreliable on my gcc 3.3.2 on
|
|
dnl on i686-Linux as it gives us heaps with false positives.
|
|
dnl Also, on gcc 4.0.X it is totally unbearable and complains all
|
|
dnl over making it unusable for generic purposes. Let's not use it.
|
|
tmp_CFLAGS="$tmp_CFLAGS"
|
|
fi
|
|
#
|
|
dnl Only gcc 3.3 or later
|
|
if test "$compiler_num" -ge "303"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [endif-labels strict-prototypes])
|
|
fi
|
|
#
|
|
dnl Only gcc 3.4 or later
|
|
if test "$compiler_num" -ge "304"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [declaration-after-statement])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [old-style-definition])
|
|
fi
|
|
#
|
|
dnl Only gcc 4.0 or later
|
|
if test "$compiler_num" -ge "400"; then
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wstrict-aliasing=3"
|
|
fi
|
|
#
|
|
dnl Only gcc 4.2 or later
|
|
if test "$compiler_num" -ge "402"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [cast-align])
|
|
fi
|
|
#
|
|
dnl Only gcc 4.3 or later
|
|
if test "$compiler_num" -ge "403"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [type-limits old-style-declaration])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [missing-parameter-type empty-body])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [clobbered ignored-qualifiers])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [conversion])
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-sign-conversion"
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [vla])
|
|
dnl required for -Warray-bounds, included in -Wall
|
|
tmp_CFLAGS="$tmp_CFLAGS -ftree-vrp"
|
|
fi
|
|
#
|
|
dnl Only gcc 4.5 or later
|
|
if test "$compiler_num" -ge "405"; then
|
|
dnl Only windows targets
|
|
if test "$curl_cv_have_def__WIN32" = "yes"; then
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-pedantic-ms-format"
|
|
fi
|
|
fi
|
|
#
|
|
dnl Only gcc 4.6 or later
|
|
if test "$compiler_num" -ge "406"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [double-promotion])
|
|
fi
|
|
#
|
|
dnl only gcc 4.8 or later
|
|
if test "$compiler_num" -ge "408"; then
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wformat=2"
|
|
fi
|
|
#
|
|
dnl Only gcc 5 or later
|
|
if test "$compiler_num" -ge "500"; then
|
|
tmp_CFLAGS="$tmp_CFLAGS -Warray-bounds=2"
|
|
fi
|
|
#
|
|
dnl Only gcc 6 or later
|
|
if test "$compiler_num" -ge "600"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [shift-negative-value])
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wshift-overflow=2"
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [null-dereference])
|
|
tmp_CFLAGS="$tmp_CFLAGS -fdelete-null-pointer-checks"
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [duplicated-cond])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [unused-const-variable])
|
|
fi
|
|
#
|
|
dnl Only gcc 7 or later
|
|
if test "$compiler_num" -ge "700"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [duplicated-branches])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [restrict])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [alloc-zero])
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wformat-overflow=2"
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wformat-truncation=2"
|
|
if test "$compiler_num" -lt "1200"; then
|
|
dnl gcc 12 doesn't acknowledge our comment markups
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wimplicit-fallthrough=4"
|
|
fi
|
|
fi
|
|
#
|
|
dnl Only gcc 10 or later
|
|
if test "$compiler_num" -ge "1000"; then
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [arith-conversion])
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [enum-conversion])
|
|
fi
|
|
#
|
|
fi
|
|
#
|
|
dnl Do not issue warnings for code in system include paths.
|
|
if test "$compiler_num" -ge "300"; then
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-system-headers"
|
|
else
|
|
dnl When cross-compiling with a gcc older than 3.0, disable
|
|
dnl some warnings triggered on third party system headers.
|
|
if test "x$cross_compiling" = "xyes"; then
|
|
if test "$compiler_num" -ge "104"; then
|
|
dnl gcc 1.4 or later
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-unused -Wno-shadow"
|
|
fi
|
|
if test "$compiler_num" -ge "207"; then
|
|
dnl gcc 2.7 or later
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-missing-declarations"
|
|
tmp_CFLAGS="$tmp_CFLAGS -Wno-missing-prototypes"
|
|
fi
|
|
fi
|
|
fi
|
|
;;
|
|
#
|
|
HP_UX_C)
|
|
#
|
|
if test "$want_warnings" = "yes"; then
|
|
dnl Issue all warnings
|
|
tmp_CFLAGS="$tmp_CFLAGS +w1"
|
|
fi
|
|
;;
|
|
#
|
|
IBM_C)
|
|
#
|
|
dnl Placeholder
|
|
tmp_CFLAGS="$tmp_CFLAGS"
|
|
;;
|
|
#
|
|
INTEL_UNIX_C)
|
|
#
|
|
if test "$want_warnings" = "yes"; then
|
|
if test "$compiler_num" -gt "600"; then
|
|
dnl Show errors, warnings, and remarks
|
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wall -w2"
|
|
dnl Perform extra compile-time code checking
|
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wcheck"
|
|
dnl Warn on nested comments
|
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wcomment"
|
|
dnl Show warnings relative to deprecated features
|
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wdeprecated"
|
|
dnl Enable warnings for missing prototypes
|
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wmissing-prototypes"
|
|
dnl Enable warnings for 64-bit portability issues
|
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wp64"
|
|
dnl Enable warnings for questionable pointer arithmetic
|
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wpointer-arith"
|
|
dnl Check for function return typw issues
|
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wreturn-type"
|
|
dnl Warn on variable declarations hiding a previous one
|
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wshadow"
|
|
dnl Warn when a variable is used before initialized
|
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wuninitialized"
|
|
dnl Warn if a declared function is not used
|
|
tmp_CPPFLAGS="$tmp_CPPFLAGS -Wunused-function"
|
|
fi
|
|
fi
|
|
dnl Disable using EBP register in optimizations
|
|
tmp_CFLAGS="$tmp_CFLAGS -fno-omit-frame-pointer"
|
|
dnl Disable use of ANSI C aliasing rules in optimizations
|
|
tmp_CFLAGS="$tmp_CFLAGS -fno-strict-aliasing"
|
|
dnl Value-safe optimizations on floating-point data
|
|
tmp_CFLAGS="$tmp_CFLAGS -fp-model precise"
|
|
;;
|
|
#
|
|
INTEL_WINDOWS_C)
|
|
#
|
|
dnl Placeholder
|
|
tmp_CFLAGS="$tmp_CFLAGS"
|
|
;;
|
|
#
|
|
LCC)
|
|
#
|
|
if test "$want_warnings" = "yes"; then
|
|
dnl Highest warning level is double -A, next is single -A.
|
|
dnl Due to the big number of warnings these trigger on third
|
|
dnl party header files it is impractical for us to use any of
|
|
dnl them here. If you want them simply define it in CPPFLAGS.
|
|
tmp_CFLAGS="$tmp_CFLAGS"
|
|
fi
|
|
;;
|
|
#
|
|
SGI_MIPS_C)
|
|
#
|
|
if test "$want_warnings" = "yes"; then
|
|
dnl Perform stricter semantic and lint-like checks
|
|
tmp_CFLAGS="$tmp_CFLAGS -fullwarn"
|
|
fi
|
|
;;
|
|
#
|
|
SGI_MIPSPRO_C)
|
|
#
|
|
if test "$want_warnings" = "yes"; then
|
|
dnl Perform stricter semantic and lint-like checks
|
|
tmp_CFLAGS="$tmp_CFLAGS -fullwarn"
|
|
dnl Disable some remarks
|
|
dnl #1209: controlling expression is constant
|
|
tmp_CFLAGS="$tmp_CFLAGS -woff 1209"
|
|
fi
|
|
;;
|
|
#
|
|
SUNPRO_C)
|
|
#
|
|
if test "$want_warnings" = "yes"; then
|
|
dnl Perform stricter semantic and lint-like checks
|
|
tmp_CFLAGS="$tmp_CFLAGS -v"
|
|
fi
|
|
;;
|
|
#
|
|
TINY_C)
|
|
#
|
|
if test "$want_warnings" = "yes"; then
|
|
dnl Activate all warnings
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [all])
|
|
dnl Make string constants be of type const char *
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [write-strings])
|
|
dnl Warn use of unsupported GCC features ignored by TCC
|
|
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [unsupported])
|
|
fi
|
|
;;
|
|
#
|
|
esac
|
|
#
|
|
squeeze tmp_CPPFLAGS
|
|
squeeze tmp_CFLAGS
|
|
#
|
|
if test ! -z "$tmp_CFLAGS" || test ! -z "$tmp_CPPFLAGS"; then
|
|
AC_MSG_CHECKING([if compiler accepts strict warning options])
|
|
CPPFLAGS="$tmp_save_CPPFLAGS $tmp_CPPFLAGS"
|
|
CFLAGS="$tmp_save_CFLAGS $tmp_CFLAGS"
|
|
squeeze CPPFLAGS
|
|
squeeze CFLAGS
|
|
CURL_COMPILER_WORKS_IFELSE([
|
|
AC_MSG_RESULT([yes])
|
|
AC_MSG_NOTICE([compiler options added: $tmp_CFLAGS $tmp_CPPFLAGS])
|
|
],[
|
|
AC_MSG_RESULT([no])
|
|
AC_MSG_WARN([compiler options rejected: $tmp_CFLAGS $tmp_CPPFLAGS])
|
|
dnl restore initial settings
|
|
CPPFLAGS="$tmp_save_CPPFLAGS"
|
|
CFLAGS="$tmp_save_CFLAGS"
|
|
])
|
|
fi
|
|
#
|
|
fi
|
|
])
|
|
|
|
|
|
dnl CURL_SHFUNC_SQUEEZE
|
|
dnl -------------------------------------------------
|
|
dnl Declares a shell function squeeze() which removes
|
|
dnl redundant whitespace out of a shell variable.
|
|
|
|
AC_DEFUN([CURL_SHFUNC_SQUEEZE], [
|
|
squeeze() {
|
|
_sqz_result=""
|
|
eval _sqz_input=\[$][$]1
|
|
for _sqz_token in $_sqz_input; do
|
|
if test -z "$_sqz_result"; then
|
|
_sqz_result="$_sqz_token"
|
|
else
|
|
_sqz_result="$_sqz_result $_sqz_token"
|
|
fi
|
|
done
|
|
eval [$]1=\$_sqz_result
|
|
return 0
|
|
}
|
|
])
|
|
|
|
|
|
dnl CURL_CHECK_CURLDEBUG
|
|
dnl -------------------------------------------------
|
|
dnl Settings which depend on configure's curldebug given
|
|
dnl option, and other additional configure pre-requisites.
|
|
dnl Actually the curl debug memory tracking feature can
|
|
dnl only be used/enabled when libcurl is built as a static
|
|
dnl library or as a shared one on those systems on which
|
|
dnl shared libraries support undefined symbols.
|
|
|
|
AC_DEFUN([CURL_CHECK_CURLDEBUG], [
|
|
AC_REQUIRE([XC_LIBTOOL])dnl
|
|
AC_REQUIRE([CURL_SHFUNC_SQUEEZE])dnl
|
|
supports_curldebug="unknown"
|
|
if test "$want_curldebug" = "yes"; then
|
|
if test "x$enable_shared" != "xno" &&
|
|
test "x$enable_shared" != "xyes"; then
|
|
AC_MSG_WARN([unknown enable_shared setting.])
|
|
supports_curldebug="no"
|
|
fi
|
|
if test "x$enable_static" != "xno" &&
|
|
test "x$enable_static" != "xyes"; then
|
|
AC_MSG_WARN([unknown enable_static setting.])
|
|
supports_curldebug="no"
|
|
fi
|
|
if test "$supports_curldebug" != "no"; then
|
|
if test "$enable_shared" = "yes" &&
|
|
test "x$xc_lt_shlib_use_no_undefined" = 'xyes'; then
|
|
supports_curldebug="no"
|
|
AC_MSG_WARN([shared library does not support undefined symbols.])
|
|
fi
|
|
fi
|
|
fi
|
|
#
|
|
if test "$want_curldebug" = "yes"; then
|
|
AC_MSG_CHECKING([if curl debug memory tracking can be enabled])
|
|
test "$supports_curldebug" = "no" || supports_curldebug="yes"
|
|
AC_MSG_RESULT([$supports_curldebug])
|
|
if test "$supports_curldebug" = "no"; then
|
|
AC_MSG_WARN([cannot enable curl debug memory tracking.])
|
|
want_curldebug="no"
|
|
fi
|
|
fi
|
|
])
|
|
|
|
|
|
|
|
dnl CURL_CHECK_COMPILER_HALT_ON_ERROR
|
|
dnl -------------------------------------------------
|
|
dnl Verifies if the compiler actually halts after the
|
|
dnl compilation phase without generating any object
|
|
dnl code file, when the source compiles with errors.
|
|
|
|
AC_DEFUN([CURL_CHECK_COMPILER_HALT_ON_ERROR], [
|
|
AC_MSG_CHECKING([if compiler halts on compilation errors])
|
|
AC_COMPILE_IFELSE([
|
|
AC_LANG_PROGRAM([[
|
|
]],[[
|
|
force compilation error
|
|
]])
|
|
],[
|
|
AC_MSG_RESULT([no])
|
|
AC_MSG_ERROR([compiler does not halt on compilation errors.])
|
|
],[
|
|
AC_MSG_RESULT([yes])
|
|
])
|
|
])
|
|
|
|
|
|
dnl CURL_CHECK_COMPILER_ARRAY_SIZE_NEGATIVE
|
|
dnl -------------------------------------------------
|
|
dnl Verifies if the compiler actually halts after the
|
|
dnl compilation phase without generating any object
|
|
dnl code file, when the source code tries to define a
|
|
dnl type for a constant array with negative dimension.
|
|
|
|
AC_DEFUN([CURL_CHECK_COMPILER_ARRAY_SIZE_NEGATIVE], [
|
|
AC_REQUIRE([CURL_CHECK_COMPILER_HALT_ON_ERROR])dnl
|
|
AC_MSG_CHECKING([if compiler halts on negative sized arrays])
|
|
AC_COMPILE_IFELSE([
|
|
AC_LANG_PROGRAM([[
|
|
typedef char bad_t[sizeof(char) == sizeof(int) ? -1 : -1 ];
|
|
]],[[
|
|
bad_t dummy;
|
|
]])
|
|
],[
|
|
AC_MSG_RESULT([no])
|
|
AC_MSG_ERROR([compiler does not halt on negative sized arrays.])
|
|
],[
|
|
AC_MSG_RESULT([yes])
|
|
])
|
|
])
|
|
|
|
|
|
dnl CURL_CHECK_COMPILER_STRUCT_MEMBER_SIZE
|
|
dnl -------------------------------------------------
|
|
dnl Verifies if the compiler is capable of handling the
|
|
dnl size of a struct member, struct which is a function
|
|
dnl result, as a compilation-time condition inside the
|
|
dnl type definition of a constant array.
|
|
|
|
AC_DEFUN([CURL_CHECK_COMPILER_STRUCT_MEMBER_SIZE], [
|
|
AC_REQUIRE([CURL_CHECK_COMPILER_ARRAY_SIZE_NEGATIVE])dnl
|
|
AC_MSG_CHECKING([if compiler struct member size checking works])
|
|
tst_compiler_check_one_works="unknown"
|
|
AC_COMPILE_IFELSE([
|
|
AC_LANG_PROGRAM([[
|
|
struct mystruct {
|
|
int mi;
|
|
char mc;
|
|
struct mystruct *next;
|
|
};
|
|
struct mystruct myfunc();
|
|
typedef char good_t1[sizeof(myfunc().mi) == sizeof(int) ? 1 : -1 ];
|
|
typedef char good_t2[sizeof(myfunc().mc) == sizeof(char) ? 1 : -1 ];
|
|
]],[[
|
|
good_t1 dummy1;
|
|
good_t2 dummy2;
|
|
]])
|
|
],[
|
|
tst_compiler_check_one_works="yes"
|
|
],[
|
|
tst_compiler_check_one_works="no"
|
|
sed 's/^/cc-src: /' conftest.$ac_ext >&6
|
|
sed 's/^/cc-err: /' conftest.err >&6
|
|
])
|
|
tst_compiler_check_two_works="unknown"
|
|
AC_COMPILE_IFELSE([
|
|
AC_LANG_PROGRAM([[
|
|
struct mystruct {
|
|
int mi;
|
|
char mc;
|
|
struct mystruct *next;
|
|
};
|
|
struct mystruct myfunc();
|
|
typedef char bad_t1[sizeof(myfunc().mi) != sizeof(int) ? 1 : -1 ];
|
|
typedef char bad_t2[sizeof(myfunc().mc) != sizeof(char) ? 1 : -1 ];
|
|
]],[[
|
|
bad_t1 dummy1;
|
|
bad_t2 dummy2;
|
|
]])
|
|
],[
|
|
tst_compiler_check_two_works="no"
|
|
],[
|
|
tst_compiler_check_two_works="yes"
|
|
])
|
|
if test "$tst_compiler_check_one_works" = "yes" &&
|
|
test "$tst_compiler_check_two_works" = "yes"; then
|
|
AC_MSG_RESULT([yes])
|
|
else
|
|
AC_MSG_RESULT([no])
|
|
AC_MSG_ERROR([compiler fails struct member size checking.])
|
|
fi
|
|
])
|
|
|
|
|
|
dnl CURL_CHECK_COMPILER_SYMBOL_HIDING
|
|
dnl -------------------------------------------------
|
|
dnl Verify if compiler supports hiding library internal symbols, setting
|
|
dnl shell variable supports_symbol_hiding value as appropriate, as well as
|
|
dnl variables symbol_hiding_CFLAGS and symbol_hiding_EXTERN when supported.
|
|
|
|
AC_DEFUN([CURL_CHECK_COMPILER_SYMBOL_HIDING], [
|
|
AC_REQUIRE([CURL_CHECK_COMPILER])dnl
|
|
AC_BEFORE([$0],[CURL_CONFIGURE_SYMBOL_HIDING])dnl
|
|
AC_MSG_CHECKING([if compiler supports hiding library internal symbols])
|
|
supports_symbol_hiding="no"
|
|
symbol_hiding_CFLAGS=""
|
|
symbol_hiding_EXTERN=""
|
|
tmp_CFLAGS=""
|
|
tmp_EXTERN=""
|
|
case "$compiler_id" in
|
|
CLANG)
|
|
dnl All versions of clang support -fvisibility=
|
|
tmp_EXTERN="__attribute__ ((__visibility__ (\"default\")))"
|
|
tmp_CFLAGS="-fvisibility=hidden"
|
|
supports_symbol_hiding="yes"
|
|
;;
|
|
GNU_C)
|
|
dnl Only gcc 3.4 or later
|
|
if test "$compiler_num" -ge "304"; then
|
|
if $CC --help --verbose 2>/dev/null | grep fvisibility= >/dev/null ; then
|
|
tmp_EXTERN="__attribute__ ((__visibility__ (\"default\")))"
|
|
tmp_CFLAGS="-fvisibility=hidden"
|
|
supports_symbol_hiding="yes"
|
|
fi
|
|
fi
|
|
;;
|
|
INTEL_UNIX_C)
|
|
dnl Only icc 9.0 or later
|
|
if test "$compiler_num" -ge "900"; then
|
|
if $CC --help --verbose 2>&1 | grep fvisibility= > /dev/null ; then
|
|
tmp_save_CFLAGS="$CFLAGS"
|
|
CFLAGS="$CFLAGS -fvisibility=hidden"
|
|
AC_LINK_IFELSE([
|
|
AC_LANG_PROGRAM([[
|
|
# include <stdio.h>
|
|
]],[[
|
|
printf("icc fvisibility bug test");
|
|
]])
|
|
],[
|
|
tmp_EXTERN="__attribute__ ((__visibility__ (\"default\")))"
|
|
tmp_CFLAGS="-fvisibility=hidden"
|
|
supports_symbol_hiding="yes"
|
|
])
|
|
CFLAGS="$tmp_save_CFLAGS"
|
|
fi
|
|
fi
|
|
;;
|
|
SUNPRO_C)
|
|
if $CC 2>&1 | grep flags >/dev/null && $CC -flags | grep xldscope= >/dev/null ; then
|
|
tmp_EXTERN="__global"
|
|
tmp_CFLAGS="-xldscope=hidden"
|
|
supports_symbol_hiding="yes"
|
|
fi
|
|
;;
|
|
esac
|
|
if test "$supports_symbol_hiding" = "yes"; then
|
|
tmp_save_CFLAGS="$CFLAGS"
|
|
CFLAGS="$tmp_save_CFLAGS $tmp_CFLAGS"
|
|
squeeze CFLAGS
|
|
AC_COMPILE_IFELSE([
|
|
AC_LANG_PROGRAM([[
|
|
$tmp_EXTERN char *dummy(char *buff);
|
|
char *dummy(char *buff)
|
|
{
|
|
if(buff)
|
|
return ++buff;
|
|
else
|
|
return buff;
|
|
}
|
|
]],[[
|
|
char b[16];
|
|
char *r = dummy(&b[0]);
|
|
if(r)
|
|
return (int)*r;
|
|
]])
|
|
],[
|
|
supports_symbol_hiding="yes"
|
|
if test -f conftest.err; then
|
|
grep 'visibility' conftest.err >/dev/null
|
|
if test "$?" -eq "0"; then
|
|
supports_symbol_hiding="no"
|
|
fi
|
|
fi
|
|
],[
|
|
supports_symbol_hiding="no"
|
|
echo " " >&6
|
|
sed 's/^/cc-src: /' conftest.$ac_ext >&6
|
|
sed 's/^/cc-err: /' conftest.err >&6
|
|
echo " " >&6
|
|
])
|
|
CFLAGS="$tmp_save_CFLAGS"
|
|
fi
|
|
if test "$supports_symbol_hiding" = "yes"; then
|
|
AC_MSG_RESULT([yes])
|
|
symbol_hiding_CFLAGS="$tmp_CFLAGS"
|
|
symbol_hiding_EXTERN="$tmp_EXTERN"
|
|
else
|
|
AC_MSG_RESULT([no])
|
|
fi
|
|
])
|
|
|
|
|
|
dnl CURL_CHECK_COMPILER_PROTOTYPE_MISMATCH
|
|
dnl -------------------------------------------------
|
|
dnl Verifies if the compiler actually halts after the
|
|
dnl compilation phase without generating any object
|
|
dnl code file, when the source code tries to redefine
|
|
dnl a prototype which does not match previous one.
|
|
|
|
AC_DEFUN([CURL_CHECK_COMPILER_PROTOTYPE_MISMATCH], [
|
|
AC_REQUIRE([CURL_CHECK_COMPILER_HALT_ON_ERROR])dnl
|
|
AC_MSG_CHECKING([if compiler halts on function prototype mismatch])
|
|
AC_COMPILE_IFELSE([
|
|
AC_LANG_PROGRAM([[
|
|
# include <stdlib.h>
|
|
int rand(int n);
|
|
int rand(int n)
|
|
{
|
|
if(n)
|
|
return ++n;
|
|
else
|
|
return n;
|
|
}
|
|
]],[[
|
|
int i[2]={0,0};
|
|
int j = rand(i[0]);
|
|
if(j)
|
|
return j;
|
|
]])
|
|
],[
|
|
AC_MSG_RESULT([no])
|
|
AC_MSG_ERROR([compiler does not halt on function prototype mismatch.])
|
|
],[
|
|
AC_MSG_RESULT([yes])
|
|
])
|
|
])
|
|
|
|
|
|
dnl CURL_VAR_MATCH (VARNAME, VALUE)
|
|
dnl -------------------------------------------------
|
|
dnl Verifies if shell variable VARNAME contains VALUE.
|
|
dnl Contents of variable VARNAME and VALUE are handled
|
|
dnl as whitespace separated lists of words. If at least
|
|
dnl one word of VALUE is present in VARNAME the match
|
|
dnl is considered positive, otherwise false.
|
|
|
|
AC_DEFUN([CURL_VAR_MATCH], [
|
|
ac_var_match_word="no"
|
|
for word1 in $[$1]; do
|
|
for word2 in [$2]; do
|
|
if test "$word1" = "$word2"; then
|
|
ac_var_match_word="yes"
|
|
fi
|
|
done
|
|
done
|
|
])
|
|
|
|
|
|
dnl CURL_VAR_MATCH_IFELSE (VARNAME, VALUE,
|
|
dnl [ACTION-IF-MATCH], [ACTION-IF-NOT-MATCH])
|
|
dnl -------------------------------------------------
|
|
dnl This performs a CURL_VAR_MATCH check and executes
|
|
dnl first branch if the match is positive, otherwise
|
|
dnl the second branch is executed.
|
|
|
|
AC_DEFUN([CURL_VAR_MATCH_IFELSE], [
|
|
CURL_VAR_MATCH([$1],[$2])
|
|
if test "$ac_var_match_word" = "yes"; then
|
|
ifelse($3,,:,[$3])
|
|
ifelse($4,,,[else
|
|
$4])
|
|
fi
|
|
])
|
|
|
|
|
|
dnl CURL_VAR_STRIP (VARNAME, VALUE)
|
|
dnl -------------------------------------------------
|
|
dnl Contents of variable VARNAME and VALUE are handled
|
|
dnl as whitespace separated lists of words. Each word
|
|
dnl from VALUE is removed from VARNAME when present.
|
|
|
|
AC_DEFUN([CURL_VAR_STRIP], [
|
|
AC_REQUIRE([CURL_SHFUNC_SQUEEZE])dnl
|
|
ac_var_stripped=""
|
|
for word1 in $[$1]; do
|
|
ac_var_strip_word="no"
|
|
for word2 in [$2]; do
|
|
if test "$word1" = "$word2"; then
|
|
ac_var_strip_word="yes"
|
|
fi
|
|
done
|
|
if test "$ac_var_strip_word" = "no"; then
|
|
ac_var_stripped="$ac_var_stripped $word1"
|
|
fi
|
|
done
|
|
dnl squeeze whitespace out of result
|
|
[$1]="$ac_var_stripped"
|
|
squeeze [$1]
|
|
])
|
|
|
|
dnl CURL_ADD_COMPILER_WARNINGS (WARNING-LIST, NEW-WARNINGS)
|
|
dnl -------------------------------------------------------
|
|
dnl Contents of variable WARNING-LIST and NEW-WARNINGS are
|
|
dnl handled as whitespace separated lists of words.
|
|
dnl Add each compiler warning from NEW-WARNINGS that has not
|
|
dnl been disabled via CFLAGS to WARNING-LIST.
|
|
|
|
AC_DEFUN([CURL_ADD_COMPILER_WARNINGS], [
|
|
AC_REQUIRE([CURL_SHFUNC_SQUEEZE])dnl
|
|
ac_var_added_warnings=""
|
|
for warning in [$2]; do
|
|
CURL_VAR_MATCH(CFLAGS, [-Wno-$warning -W$warning])
|
|
if test "$ac_var_match_word" = "no"; then
|
|
ac_var_added_warnings="$ac_var_added_warnings -W$warning"
|
|
fi
|
|
done
|
|
dnl squeeze whitespace out of result
|
|
[$1]="$[$1] $ac_var_added_warnings"
|
|
squeeze [$1]
|
|
])
|