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79 lines
2.8 KiB
CMake
79 lines
2.8 KiB
CMake
# - Get compiler version
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# probe the GCC version, returns empty string if GCC is not compiler
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function (get_gcc_version language ver_name)
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if(CMAKE_${language}_COMPILER_ID STREQUAL GNU)
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# exec_program is deprecated, but execute_process does't work :-(
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exec_program (${CMAKE_${language}_COMPILER}
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ARGS ${CMAKE_${language}_COMPILER_ARG1} -dumpversion
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OUTPUT_VARIABLE _version
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)
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set (${ver_name} ${_version} PARENT_SCOPE)
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else (CMAKE_${language}_COMPILER_ID STREQUAL GNU)
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set (${ver_name} "" PARENT_SCOPE)
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endif (CMAKE_${language}_COMPILER_ID STREQUAL GNU)
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endfunction (get_gcc_version ver_name)
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# less reliable, but includes the patch number
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function (get_gcc_patch language ver_name)
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if(CMAKE_${language}_COMPILER_ID STREQUAL GNU)
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# exec_program is deprecated, but execute_process does't work :-(
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exec_program (${CMAKE_${language}_COMPILER}
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ARGS ${CMAKE_${language}_COMPILER_ARG1} --version
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OUTPUT_VARIABLE _version
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)
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# split multi-line string into list
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if (WIN32)
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string (REPLACE "\r\n" ";" _version "${_version}")
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else (WIN32)
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string (REPLACE "\n" ";" _version "${_version}")
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endif (WIN32)
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# only keep first line
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list (GET _version 0 _version)
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# extract version number from it (this is the fragile part)
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string (REGEX REPLACE "^[^\\(]+(\\([^\\)]*\\))?[\ \t]*([0-9]+\\.[0-9]+\\.[0-9]+)(.*\\(.*\\))?" "\\2" _version "${_version}")
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# return this to the caller
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set (${ver_name} ${_version} PARENT_SCOPE)
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else (CMAKE_${language}_COMPILER_ID STREQUAL GNU)
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set (${ver_name} "" PARENT_SCOPE)
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endif (CMAKE_${language}_COMPILER_ID STREQUAL GNU)
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endfunction (get_gcc_patch language ver_name)
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function (compiler_info)
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if (CMAKE_COMPILER_IS_GNUCXX)
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get_gcc_patch (CXX version)
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message (STATUS "GNU C++ compiler version: ${version}")
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endif (CMAKE_COMPILER_IS_GNUCXX)
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endfunction (compiler_info)
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function (get_ld_version ver_name)
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# run linker to get the version number. interestingly, this option works
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# (for our purposes) on all major platforms (Linux, Mac OS X and Windows);
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# it returns the program version although it may have ended in error
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exec_program (${CMAKE_LINKER}
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ARGS "-v"
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OUTPUT_VARIABLE _version
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)
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# keep only first line, even on Mac OS X there is no line end
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list (GET _version 0 _version)
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# format of the version string is platform-specific
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if (NOT WIN32)
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if (APPLE)
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string (REGEX REPLACE ".*, from Apple (.*\)" "\\1" _version "${_version}")
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else (APPLE)
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# assuming some GNU toolchain now
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string (REGEX REPLACE "GNU ([a-zA-Z0-9_]*) (version|\\(.*\\)) ([^\\ ]*).*" "\\1 \\3" _version "${_version}")
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endif (APPLE)
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endif (NOT WIN32)
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# return the string to the caller
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set (${ver_name} "${_version}" PARENT_SCOPE)
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endfunction (get_ld_version ver_name)
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function (linker_info)
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get_ld_version (version)
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message (STATUS "Linker: ${version}")
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endfunction (linker_info)
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