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INCLUDE (ExternalProject)
SET(WITH_PCRE "auto" CACHE STRING
"Which pcre to use (possible values are 'bundled', 'system', or 'auto')")
MACRO(BUNDLE_PCRE2)
SET(WITH_PCRE "bundled" CACHE STRING
"Which pcre to use (possible values are 'bundled', 'system', or 'auto')")
SET(dir "${CMAKE_BINARY_DIR}/extra/pcre2")
SET(PCRE_INCLUDE_DIRS ${dir}/src/pcre2-build ${dir}/src/pcre2/src)
MESSAGE(STATUS "Will download and bundle pcre2")
SET(byproducts)
FOREACH(lib pcre2-posix pcre2-8)
ADD_LIBRARY(${lib} STATIC IMPORTED GLOBAL)
ADD_DEPENDENCIES(${lib} pcre2)
GET_PROPERTY(MULTICONFIG GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
IF(MULTICONFIG)
SET(intdir "${CMAKE_CFG_INTDIR}/")
ELSE()
SET(intdir)
ENDIF()
# PCRE names static libraries differently depending on platform.
# On Windows, but not elsewhere, it adds "-static" to the library name,
# or "-staticd".
IF(WIN32)
SET(PCRE_STATIC "-static")
ELSE()
SET(PCRE_STATIC "")
ENDIF()
SET(file ${dir}/src/pcre2-build/${intdir}${CMAKE_STATIC_LIBRARY_PREFIX}${lib}${PCRE_STATIC}${CMAKE_STATIC_LIBRARY_SUFFIX})
IF(WIN32)
# Debug libary name.
# Same condition as in pcre2 CMakeLists.txt that adds "d"
SET(file_d ${dir}/src/pcre2-build/${intdir}${CMAKE_STATIC_LIBRARY_PREFIX}${lib}${PCRE_STATIC}d${CMAKE_STATIC_LIBRARY_SUFFIX})
SET_TARGET_PROPERTIES(${lib} PROPERTIES IMPORTED_LOCATION_DEBUG ${file_d})
ELSE()
SET(file_d)
ENDIF()
SET(byproducts ${byproducts} BUILD_BYPRODUCTS ${file} ${file_d})
SET_TARGET_PROPERTIES(${lib} PROPERTIES IMPORTED_LOCATION ${file})
ENDFOREACH()
FOREACH(v "" "_DEBUG" "_RELWITHDEBINFO" "_RELEASE" "_MINSIZEREL")
SET(pcre2_flags${v} "${CMAKE_C_FLAGS${v}}")
IF(MSVC)
STRING(REPLACE "/WX" "" pcre2_flags${v} "${pcre2_flags${v}}")
# Suppress a warning
STRING(APPEND pcre2_flags${v} " /wd4244 /wd4267 " )
ENDIF()
ENDFOREACH()
IF(CMAKE_MSVC_RUNTIME_LIBRARY)
SET(CMAKE_MSVC_RUNTIME_LIBRARY_ARG
"-DCMAKE_MSVC_RUNTIME_LIBRARY=${CMAKE_MSVC_RUNTIME_LIBRARY}")
ELSE()
SET(CMAKE_MSVC_RUNTIME_LIBRARY_ARG)
ENDIF()
ExternalProject_Add(
pcre2
PREFIX "${dir}"
URL "https://github.com/PCRE2Project/pcre2/releases/download/pcre2-10.45/pcre2-10.45.zip"
URL_MD5 873da56c6469ec207ca5c5ae9688b83a
INSTALL_COMMAND ""
CMAKE_ARGS
"-DCMAKE_WARN_DEPRECATED=FALSE"
"-DPCRE2_BUILD_TESTS=OFF"
"-DPCRE2_BUILD_PCRE2GREP=OFF"
"-DBUILD_SHARED_LIBS=OFF"
"-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}"
"-DCMAKE_C_FLAGS=${pcre2_flags} ${PIC_FLAG}"
"-DCMAKE_C_FLAGS_DEBUG=${pcre2_flags_DEBUG}"
"-DCMAKE_C_FLAGS_RELWITHDEBINFO=${pcre2_flags_RELWITHDEBINFO}"
"-DCMAKE_C_FLAGS_RELEASE=${pcre2_flags_RELEASE}"
"-DCMAKE_C_FLAGS_MINSIZEREL=${pcre2_flags_MINSIZEREL}"
"-DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}"
${CMAKE_MSVC_RUNTIME_LIBRARY_ARG}
${stdlibs}
${byproducts}
)
SET_TARGET_PROPERTIES(pcre2 PROPERTIES EXCLUDE_FROM_ALL TRUE)
ENDMACRO()
MACRO (CHECK_PCRE)
IF (NOT TARGET pcre2 AND NOT PCRE_FOUND)
IF(WITH_PCRE STREQUAL "system" OR WITH_PCRE STREQUAL "auto")
FIND_PACKAGE(PkgConfig QUIET)
PKG_CHECK_MODULES(PCRE libpcre2-8)
# in case pkg-config or libpcre2-8.pc is not installed:
CHECK_LIBRARY_EXISTS(pcre2-8 pcre2_match_8 "${PCRE_LIBRARY_DIRS}" HAVE_PCRE2_MATCH_8)
ENDIF()
IF(NOT HAVE_PCRE2_MATCH_8 OR WITH_PCRE STREQUAL "bundled")
IF (WITH_PCRE STREQUAL "system")
MESSAGE(FATAL_ERROR "system pcre2-8 library is not found or unusable")
ENDIF()
BUNDLE_PCRE2()
ELSE()
CHECK_LIBRARY_EXISTS(pcre2-posix PCRE2regcomp "${PCRE_LIBRARY_DIRS}" NEEDS_PCRE2_DEBIAN_HACK)
IF(NEEDS_PCRE2_DEBIAN_HACK)
SET(PCRE2_DEBIAN_HACK "-Dregcomp=PCRE2regcomp -Dregexec=PCRE2regexec -Dregerror=PCRE2regerror -Dregfree=PCRE2regfree")
ENDIF()
ENDIF()
ENDIF()
ENDMACRO()
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