/strigi-0.7.7/libstreams/cmake/MacroCheckGccVisibility.cmake
CMake | 47 lines | 30 code | 8 blank | 9 comment | 7 complexity | d486c0942a3feb5077f2460ddb59d2e8 MD5 | raw file
Possible License(s): LGPL-2.0
- #
- # Copyright (c) 2006, Alexander Neundorf <neundorf@kde.org>
- # Copyright (c) 2006, Laurent Montel, <montel@kde.org>
- #
- # Redistribution and use is allowed according to the terms of the BSD license.
- # For details see the accompanying COPYING-CMAKE-SCRIPTS file.
- macro(MACRO_CHECK_GCC_VISIBILITY GccVisibility)
- if (CMAKE_COMPILER_IS_GNUCXX)
- include(CheckCXXCompilerFlag)
- include(MacroEnsureVersion)
- # visibility support
- check_cxx_compiler_flag(-fvisibility=hidden ${GccVisibility})
- # get the gcc version
- exec_program(${CMAKE_C_COMPILER} ARGS ${CMAKE_C_COMPILER_ARG1} --version OUTPUT_VARIABLE _gcc_version_info)
- string (REGEX MATCH "[345]\\.[0-9]\\.[0-9]" _gcc_version "${_gcc_version_info}")
- # gcc on mac just reports: "gcc (GCC) 3.3 20030304 ..." without the patch level, handle this here:
- if (NOT _gcc_version)
- string (REGEX REPLACE ".*\\(GCC\\).* ([34]\\.[0-9]) .*" "\\1.0" _gcc_version "${_gcc_version_info}")
- endif (NOT _gcc_version)
- macro_ensure_version("4.1.0" "${_gcc_version}" GCC_IS_NEWER_THAN_4_1)
- macro_ensure_version("4.2.0" "${_gcc_version}" GCC_IS_NEWER_THAN_4_2)
- set(_GCC_COMPILED_WITH_BAD_ALLOCATOR FALSE)
- if (GCC_IS_NEWER_THAN_4_1)
- exec_program(${CMAKE_C_COMPILER} ARGS -v OUTPUT_VARIABLE _gcc_alloc_info)
- string(REGEX MATCH "(--enable-libstdcxx-allocator=mt)" _GCC_COMPILED_WITH_BAD_ALLOCATOR "${_gcc_alloc_info}")
- endif (GCC_IS_NEWER_THAN_4_1)
- if (${GccVisibility} AND GCC_IS_NEWER_THAN_4_1 AND NOT _GCC_COMPILED_WITH_BAD_ALLOCATOR AND NOT WIN32)
- set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden")
- set (KDE4_C_FLAGS "${KDE4_C_FLAGS}" "-fvisibility=hidden")
- if (GCC_IS_NEWER_THAN_4_2)
- set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility-inlines-hidden")
- endif (GCC_IS_NEWER_THAN_4_2)
- else (${GccVisibility} AND GCC_IS_NEWER_THAN_4_1 AND NOT _GCC_COMPILED_WITH_BAD_ALLOCATOR AND NOT WIN32)
- set (${GccVisibility} 0)
- endif (${GccVisibility} AND GCC_IS_NEWER_THAN_4_1 AND NOT _GCC_COMPILED_WITH_BAD_ALLOCATOR AND NOT WIN32)
- else (CMAKE_COMPILER_IS_GNUCXX)
- set(${GccVisibility} FALSE)
- endif (CMAKE_COMPILER_IS_GNUCXX)
- endmacro(MACRO_CHECK_GCC_VISIBILITY)