131 lines
4.8 KiB
CMake
131 lines
4.8 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 ngtcp2 library
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#
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# This module accepts optional COMPONENTS to control the crypto library (these are
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# mutually exclusive):
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#
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# - quictls: Use `libngtcp2_crypto_quictls`. (choose this for LibreSSL)
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# - BoringSSL: Use `libngtcp2_crypto_boringssl`. (choose this for AWS-LC)
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# - wolfSSL: Use `libngtcp2_crypto_wolfssl`.
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# - GnuTLS: Use `libngtcp2_crypto_gnutls`.
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#
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# Input variables:
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#
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# - `NGTCP2_INCLUDE_DIR`: The ngtcp2 include directory.
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# - `NGTCP2_LIBRARY`: Path to `ngtcp2` library.
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#
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# Result variables:
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#
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# - `NGTCP2_FOUND`: System has ngtcp2.
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# - `NGTCP2_INCLUDE_DIRS`: The ngtcp2 include directories.
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# - `NGTCP2_LIBRARIES`: The ngtcp2 library names.
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# - `NGTCP2_LIBRARY_DIRS`: The ngtcp2 library directories.
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# - `NGTCP2_PC_REQUIRES`: The ngtcp2 pkg-config packages.
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# - `NGTCP2_CFLAGS`: Required compiler flags.
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# - `NGTCP2_VERSION`: Version of ngtcp2.
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if(NGTCP2_FIND_COMPONENTS)
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set(_ngtcp2_crypto_backend "")
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foreach(_component IN LISTS NGTCP2_FIND_COMPONENTS)
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if(_component MATCHES "^(BoringSSL|quictls|wolfSSL|GnuTLS)")
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if(_ngtcp2_crypto_backend)
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message(FATAL_ERROR "NGTCP2: Only one crypto library can be selected")
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endif()
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set(_ngtcp2_crypto_backend ${_component})
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endif()
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endforeach()
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if(_ngtcp2_crypto_backend)
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string(TOLOWER "ngtcp2_crypto_${_ngtcp2_crypto_backend}" _crypto_library_lower)
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string(TOUPPER "ngtcp2_crypto_${_ngtcp2_crypto_backend}" _crypto_library_upper)
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endif()
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endif()
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set(NGTCP2_PC_REQUIRES "libngtcp2")
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if(_ngtcp2_crypto_backend)
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set(NGTCP2_CRYPTO_PC_REQUIRES "lib${_crypto_library_lower}")
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endif()
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if(CURL_USE_PKGCONFIG AND
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NOT DEFINED NGTCP2_INCLUDE_DIR AND
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NOT DEFINED NGTCP2_LIBRARY)
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find_package(PkgConfig QUIET)
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pkg_check_modules(NGTCP2 ${NGTCP2_PC_REQUIRES})
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if(_ngtcp2_crypto_backend)
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pkg_check_modules("${_crypto_library_upper}" ${NGTCP2_CRYPTO_PC_REQUIRES})
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else()
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set("${_crypto_library_upper}_FOUND" TRUE)
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endif()
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endif()
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list(APPEND NGTCP2_PC_REQUIRES ${NGTCP2_CRYPTO_PC_REQUIRES})
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if(NGTCP2_FOUND AND "${${_crypto_library_upper}_FOUND}")
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list(APPEND NGTCP2_LIBRARIES "${${_crypto_library_upper}_LIBRARIES}")
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list(REMOVE_DUPLICATES NGTCP2_LIBRARIES)
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string(REPLACE ";" " " NGTCP2_CFLAGS "${NGTCP2_CFLAGS}")
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message(STATUS "Found NGTCP2 (via pkg-config): ${NGTCP2_INCLUDE_DIRS} (found version \"${NGTCP2_VERSION}\")")
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else()
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find_path(NGTCP2_INCLUDE_DIR NAMES "ngtcp2/ngtcp2.h")
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find_library(NGTCP2_LIBRARY NAMES "ngtcp2")
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unset(NGTCP2_VERSION CACHE)
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if(NGTCP2_INCLUDE_DIR AND EXISTS "${NGTCP2_INCLUDE_DIR}/ngtcp2/version.h")
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set(_version_regex "#[\t ]*define[\t ]+NGTCP2_VERSION[\t ]+\"([^\"]*)\"")
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file(STRINGS "${NGTCP2_INCLUDE_DIR}/ngtcp2/version.h" _version_str REGEX "${_version_regex}")
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string(REGEX REPLACE "${_version_regex}" "\\1" _version_str "${_version_str}")
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set(NGTCP2_VERSION "${_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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if(_ngtcp2_crypto_backend)
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get_filename_component(_ngtcp2_library_dir "${NGTCP2_LIBRARY}" DIRECTORY)
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find_library(${_crypto_library_upper}_LIBRARY NAMES ${_crypto_library_lower} HINTS ${_ngtcp2_library_dir})
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if(${_crypto_library_upper}_LIBRARY)
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set(NGTCP2_${_ngtcp2_crypto_backend}_FOUND TRUE)
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set(NGTCP2_CRYPTO_LIBRARY ${${_crypto_library_upper}_LIBRARY})
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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(NGTCP2
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REQUIRED_VARS
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NGTCP2_INCLUDE_DIR
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NGTCP2_LIBRARY
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VERSION_VAR
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NGTCP2_VERSION
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HANDLE_COMPONENTS
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)
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if(NGTCP2_FOUND)
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set(NGTCP2_INCLUDE_DIRS ${NGTCP2_INCLUDE_DIR})
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set(NGTCP2_LIBRARIES ${NGTCP2_LIBRARY} ${NGTCP2_CRYPTO_LIBRARY})
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endif()
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mark_as_advanced(NGTCP2_INCLUDE_DIR NGTCP2_LIBRARY NGTCP2_CRYPTO_LIBRARY)
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endif()
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