diff options
Diffstat (limited to 'Modules/Compiler/GNU.cmake')
| -rw-r--r-- | Modules/Compiler/GNU.cmake | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Modules/Compiler/GNU.cmake b/Modules/Compiler/GNU.cmake index 4491d4b..6b1bd3a 100644 --- a/Modules/Compiler/GNU.cmake +++ b/Modules/Compiler/GNU.cmake @@ -9,13 +9,20 @@ endif() set(__COMPILER_GNU 1) include(Compiler/CMakeCommonCompilerMacros) +include(Internal/CMakeCheckCompilerFlag) macro(__compiler_gnu lang) # Feature flags. set(CMAKE_${lang}_VERBOSE_FLAG "-v") set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "-fPIC") + set (_CMAKE_${lang}_PIE_MAY_BE_SUPPORTED_BY_LINKER NO) if(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 3.4) set(CMAKE_${lang}_COMPILE_OPTIONS_PIE "-fPIE") + # Support of PIE at link stage depends on various elements : platform, compiler, linker + # so to activate it, module CheckPIESupported must be used. + set (_CMAKE_${lang}_PIE_MAY_BE_SUPPORTED_BY_LINKER YES) + set(CMAKE_${lang}_LINK_OPTIONS_PIE ${CMAKE_${lang}_COMPILE_OPTIONS_PIE} "-pie") + set(CMAKE_${lang}_LINK_OPTIONS_NO_PIE "-no-pie") endif() if(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 4.0) set(CMAKE_${lang}_COMPILE_OPTIONS_VISIBILITY "-fvisibility=") |