358 lines
12 KiB
CMake
358 lines
12 KiB
CMake
#***************************************************************************
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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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# Find the GSS Kerberos library
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#
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# Input variables:
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#
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# - `GSS_ROOT_DIR`: Set this variable to the root installation of GSS. (also supported as environment)
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#
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# Result variables:
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#
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# - `GSS_FOUND`: System has the Heimdal library.
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# - `GSS_FLAVOUR`: "GNU", "MIT" or "Heimdal" if anything found.
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# - `GSS_INCLUDE_DIRS`: The GSS include directories.
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# - `GSS_LIBRARIES`: The GSS library names.
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# - `GSS_LIBRARY_DIRS`: The GSS library directories.
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# - `GSS_PC_REQUIRES`: The GSS pkg-config packages.
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# - `GSS_CFLAGS`: Required compiler flags.
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# - `GSS_VERSION`: This is set to version advertised by pkg-config or read from manifest.
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# In case the library is found but no version info available it is set to "unknown"
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set(_gnu_modname "gss")
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set(_mit_modname "mit-krb5-gssapi")
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set(_heimdal_modname "heimdal-gssapi")
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include(CheckIncludeFile)
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include(CheckIncludeFiles)
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include(CheckTypeSize)
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set(_gss_root_hints
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"${GSS_ROOT_DIR}"
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"$ENV{GSS_ROOT_DIR}"
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)
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# Try to find library using system pkg-config if user did not specify root dir
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if(NOT GSS_ROOT_DIR AND NOT "$ENV{GSS_ROOT_DIR}")
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if(CURL_USE_PKGCONFIG)
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find_package(PkgConfig QUIET)
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pkg_search_module(_GSS ${_gnu_modname} ${_mit_modname} ${_heimdal_modname})
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list(APPEND _gss_root_hints "${_GSS_PREFIX}")
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endif()
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if(WIN32)
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list(APPEND _gss_root_hints "[HKEY_LOCAL_MACHINE\\SOFTWARE\\MIT\\Kerberos;InstallDir]")
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endif()
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endif()
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if(NOT _GSS_FOUND) # Not found by pkg-config. Let us take more traditional approach.
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find_file(_gss_configure_script
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NAMES
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"krb5-config"
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HINTS
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${_gss_root_hints}
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PATH_SUFFIXES
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"bin"
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NO_CMAKE_PATH
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NO_CMAKE_ENVIRONMENT_PATH
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)
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# If not found in user-supplied directories, maybe system knows better
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find_file(_gss_configure_script
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NAMES
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"krb5-config"
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PATH_SUFFIXES
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"bin"
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)
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if(_gss_configure_script)
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execute_process(
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COMMAND ${_gss_configure_script} "--cflags" "gssapi"
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OUTPUT_VARIABLE _GSS_CFLAGS
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RESULT_VARIABLE _gss_configure_failed
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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message(STATUS "FindGSS krb5-config --cflags: ${_GSS_CFLAGS}")
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if(NOT _gss_configure_failed) # 0 means success
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# Should also work in an odd case when multiple directories are given
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string(STRIP "${_GSS_CFLAGS}" _GSS_CFLAGS)
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string(REGEX REPLACE " +-I" ";" _GSS_CFLAGS "${_GSS_CFLAGS}")
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string(REGEX REPLACE " +-([^I][^ \\t;]*)" ";-\\1" _GSS_CFLAGS "${_GSS_CFLAGS}")
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foreach(_flag IN LISTS _GSS_CFLAGS)
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if(_flag MATCHES "^-I")
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string(REGEX REPLACE "^-I" "" _val "${_flag}")
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list(APPEND _GSS_INCLUDE_DIRS "${_val}")
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else()
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list(APPEND _GSS_CFLAGS "${_flag}")
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endif()
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endforeach()
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endif()
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execute_process(
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COMMAND ${_gss_configure_script} "--libs" "gssapi"
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OUTPUT_VARIABLE _gss_lib_flags
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RESULT_VARIABLE _gss_configure_failed
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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message(STATUS "FindGSS krb5-config --libs: ${_gss_lib_flags}")
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if(NOT _gss_configure_failed) # 0 means success
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# This script gives us libraries and link directories. Blah. We have to deal with it.
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string(STRIP "${_gss_lib_flags}" _gss_lib_flags)
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string(REGEX REPLACE " +-(L|l)" ";-\\1" _gss_lib_flags "${_gss_lib_flags}")
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string(REGEX REPLACE " +-([^Ll][^ \\t;]*)" ";-\\1" _gss_lib_flags "${_gss_lib_flags}")
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foreach(_flag IN LISTS _gss_lib_flags)
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if(_flag MATCHES "^-l")
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string(REGEX REPLACE "^-l" "" _val "${_flag}")
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list(APPEND _GSS_LIBRARIES "${_val}")
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elseif(_flag MATCHES "^-L")
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string(REGEX REPLACE "^-L" "" _val "${_flag}")
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list(APPEND _GSS_LIBRARY_DIRS "${_val}")
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endif()
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endforeach()
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endif()
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execute_process(
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COMMAND ${_gss_configure_script} "--version"
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OUTPUT_VARIABLE _GSS_VERSION
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RESULT_VARIABLE _gss_configure_failed
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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# Older versions may not have the "--version" parameter. In this case we just do not care.
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if(_gss_configure_failed)
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set(_GSS_VERSION 0)
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endif()
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execute_process(
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COMMAND ${_gss_configure_script} "--vendor"
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OUTPUT_VARIABLE _gss_vendor
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RESULT_VARIABLE _gss_configure_failed
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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# Older versions may not have the "--vendor" parameter. In this case we just do not care.
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if(_gss_configure_failed)
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set(GSS_FLAVOUR "Heimdal") # most probably, should not really matter
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else()
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if(_gss_vendor MATCHES "H|heimdal")
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set(GSS_FLAVOUR "Heimdal")
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else()
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set(GSS_FLAVOUR "MIT")
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endif()
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endif()
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else() # Either there is no config script or we are on a platform that does not provide one (Windows?)
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find_path(_GSS_INCLUDE_DIRS NAMES "gssapi/gssapi.h"
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HINTS
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${_gss_root_hints}
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PATH_SUFFIXES
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"include"
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"inc"
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)
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if(_GSS_INCLUDE_DIRS) # jay, we have found something
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cmake_push_check_state()
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list(APPEND CMAKE_REQUIRED_INCLUDES "${_GSS_INCLUDE_DIRS}")
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check_include_files("gssapi/gssapi_generic.h;gssapi/gssapi_krb5.h" _gss_have_mit_headers)
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if(_gss_have_mit_headers)
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set(GSS_FLAVOUR "MIT")
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else()
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# Prevent compiling the header - just check if we can include it
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list(APPEND CMAKE_REQUIRED_DEFINITIONS "-D__ROKEN_H__")
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check_include_file("roken.h" _gss_have_roken_h)
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check_include_file("heimdal/roken.h" _gss_have_heimdal_roken_h)
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if(_gss_have_roken_h OR _gss_have_heimdal_roken_h)
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set(GSS_FLAVOUR "Heimdal")
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endif()
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endif()
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cmake_pop_check_state()
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else()
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# I am not convinced if this is the right way but this is what autotools do at the moment
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find_path(_GSS_INCLUDE_DIRS NAMES "gssapi.h"
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HINTS
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${_gss_root_hints}
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PATH_SUFFIXES
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"include"
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"inc"
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)
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if(_GSS_INCLUDE_DIRS)
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set(GSS_FLAVOUR "Heimdal")
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else()
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find_path(_GSS_INCLUDE_DIRS NAMES "gss.h"
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HINTS
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${_gss_root_hints}
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PATH_SUFFIXES
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"include"
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)
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if(_GSS_INCLUDE_DIRS)
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set(GSS_FLAVOUR "GNU")
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set(GSS_PC_REQUIRES "gss")
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endif()
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endif()
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endif()
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# If we have headers, check if we can link libraries
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if(GSS_FLAVOUR)
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set(_gss_libdir_suffixes "")
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set(_gss_libdir_hints ${_gss_root_hints})
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get_filename_component(_gss_calculated_potential_root "${_GSS_INCLUDE_DIRS}" DIRECTORY)
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list(APPEND _gss_libdir_hints ${_gss_calculated_potential_root})
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if(WIN32)
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if(CMAKE_SIZEOF_VOID_P EQUAL 8)
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list(APPEND _gss_libdir_suffixes "lib/AMD64")
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if(GSS_FLAVOUR STREQUAL "GNU")
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set(_gss_libname "gss")
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elseif(GSS_FLAVOUR STREQUAL "MIT")
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set(_gss_libname "gssapi64")
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else()
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set(_gss_libname "libgssapi")
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endif()
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else()
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list(APPEND _gss_libdir_suffixes "lib/i386")
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if(GSS_FLAVOUR STREQUAL "GNU")
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set(_gss_libname "gss")
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elseif(GSS_FLAVOUR STREQUAL "MIT")
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set(_gss_libname "gssapi32")
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else()
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set(_gss_libname "libgssapi")
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endif()
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endif()
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else()
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list(APPEND _gss_libdir_suffixes "lib;lib64") # those suffixes are not checked for HINTS
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if(GSS_FLAVOUR STREQUAL "GNU")
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set(_gss_libname "gss")
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elseif(GSS_FLAVOUR STREQUAL "MIT")
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set(_gss_libname "gssapi_krb5")
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else()
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set(_gss_libname "gssapi")
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endif()
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endif()
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find_library(_GSS_LIBRARIES NAMES ${_gss_libname}
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HINTS
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${_gss_libdir_hints}
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PATH_SUFFIXES
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${_gss_libdir_suffixes}
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)
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endif()
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endif()
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else()
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# _GSS_MODULE_NAME set since CMake 3.16
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if(_GSS_MODULE_NAME STREQUAL _gnu_modname OR _GSS_${_gnu_modname}_VERSION)
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set(GSS_FLAVOUR "GNU")
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set(GSS_PC_REQUIRES "gss")
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if(NOT _GSS_VERSION) # for old CMake versions?
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set(_GSS_VERSION ${_GSS_${_gnu_modname}_VERSION})
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endif()
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elseif(_GSS_MODULE_NAME STREQUAL _mit_modname OR _GSS_${_mit_modname}_VERSION)
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set(GSS_FLAVOUR "MIT")
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set(GSS_PC_REQUIRES "mit-krb5-gssapi")
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if(NOT _GSS_VERSION) # for old CMake versions?
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set(_GSS_VERSION ${_GSS_${_mit_modname}_VERSION})
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endif()
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else()
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set(GSS_FLAVOUR "Heimdal")
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set(GSS_PC_REQUIRES "heimdal-gssapi")
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if(NOT _GSS_VERSION) # for old CMake versions?
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set(_GSS_VERSION ${_GSS_${_heimdal_modname}_VERSION})
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endif()
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endif()
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message(STATUS "Found GSS/${GSS_FLAVOUR} (via pkg-config): ${_GSS_INCLUDE_DIRS} (found version \"${_GSS_VERSION}\")")
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endif()
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string(REPLACE ";" " " _GSS_CFLAGS "${_GSS_CFLAGS}")
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set(GSS_INCLUDE_DIRS ${_GSS_INCLUDE_DIRS})
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set(GSS_LIBRARIES ${_GSS_LIBRARIES})
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set(GSS_LIBRARY_DIRS ${_GSS_LIBRARY_DIRS})
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set(GSS_CFLAGS ${_GSS_CFLAGS})
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set(GSS_VERSION ${_GSS_VERSION})
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if(GSS_FLAVOUR)
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if(NOT GSS_VERSION AND GSS_FLAVOUR STREQUAL "Heimdal")
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if(CMAKE_SIZEOF_VOID_P EQUAL 8)
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set(_heimdal_manifest_file "Heimdal.Application.amd64.manifest")
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else()
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set(_heimdal_manifest_file "Heimdal.Application.x86.manifest")
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endif()
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if(EXISTS "${GSS_INCLUDE_DIRS}/${_heimdal_manifest_file}")
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file(STRINGS "${GSS_INCLUDE_DIRS}/${_heimdal_manifest_file}" _heimdal_version_str
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REGEX "^.*version=\"[0-9]\\.[^\"]+\".*$")
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string(REGEX MATCH "[0-9]\\.[^\"]+" GSS_VERSION "${_heimdal_version_str}")
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endif()
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if(NOT GSS_VERSION)
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set(GSS_VERSION "Heimdal Unknown")
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endif()
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elseif(NOT GSS_VERSION AND GSS_FLAVOUR STREQUAL "MIT")
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get_filename_component(_mit_version "[HKEY_LOCAL_MACHINE\\SOFTWARE\\MIT\\Kerberos\\SDK\\CurrentVersion;VersionString]" NAME
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CACHE)
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if(WIN32 AND _mit_version)
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set(GSS_VERSION "${_mit_version}")
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else()
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set(GSS_VERSION "MIT Unknown")
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endif()
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elseif(NOT GSS_VERSION AND GSS_FLAVOUR STREQUAL "GNU")
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if(GSS_INCLUDE_DIRS AND EXISTS "${GSS_INCLUDE_DIRS}/gss.h")
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set(_version_regex "#[\t ]*define[\t ]+GSS_VERSION[\t ]+\"([^\"]*)\"")
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file(STRINGS "${GSS_INCLUDE_DIRS}/gss.h" _version_str REGEX "${_version_regex}")
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string(REGEX REPLACE "${_version_regex}" "\\1" _version_str "${_version_str}")
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set(GSS_VERSION "${_version_str}")
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unset(_version_regex)
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unset(_version_str)
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endif()
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endif()
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endif()
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(GSS
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REQUIRED_VARS
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GSS_FLAVOUR
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GSS_LIBRARIES
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VERSION_VAR
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GSS_VERSION
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FAIL_MESSAGE
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"Could NOT find GSS, try to set the path to GSS root folder in the system variable GSS_ROOT_DIR"
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)
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mark_as_advanced(
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_GSS_CFLAGS
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_GSS_FOUND
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_GSS_INCLUDE_DIRS
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_GSS_LIBRARIES
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_GSS_LIBRARY_DIRS
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_GSS_MODULE_NAME
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_GSS_PREFIX
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_GSS_VERSION
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)
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