mirror/CMake
1
0
Fork 0
mirror of https://github.com/Kitware/CMake.git synced 2026-01-06 05:40:54 -06:00
Code Issues Packages Projects Releases Wiki Activity

Only set the COMPILER_HAS_HIDDEN_VISIBILITY if GCC >= 4.2

Browse Source 
Hearsay has it that before that version it didn't work properly.

Hopefully this will fix more dashboard builds.
This commit is contained in:
Stephen Kelly
2011-08-10 21:13:33 +02:00
parent af443b830b
commit cff9493598
2 changed files with 23 additions and 35 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
Modules/GenerateExportHeader.cmake
View File

@@ -116,10 +116,28 @@ include(CMakeParseArguments)
include(CheckCXXCompilerFlag)
macro(_test_compiler_hidden_visibility)
check_cxx_compiler_flag(-fvisibility=hidden COMPILER_HAS_HIDDEN_VISIBILITY)
check_cxx_compiler_flag(-fvisibility-inlines-hidden COMPILER_HAS_HIDDEN_INLINE_VISIBILITY)
option(USE_COMPILER_HIDDEN_VISIBILITY "Use HIDDEN visibility support if available." ON)
mark_as_advanced(USE_COMPILER_HIDDEN_VISIBILITY)
if (CMAKE_COMPILER_IS_GNUCXX)
exec_program(${CMAKE_C_COMPILER} ARGS --version OUTPUT_VARIABLE _gcc_version_info)
string (REGEX MATCH "[345]\\.[0-9]\\.[0-9]" _gcc_version "${_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 "${_gcc_version_info}")
endif()
if(${_gcc_version} VERSION_LESS "4.2")
set(GCC_TOO_OLD TRUE)
message(WARNING "GCC version older than 4.2")
endif()
endif()
if (NOT GCC_TOO_OLD)
check_cxx_compiler_flag(-fvisibility=hidden COMPILER_HAS_HIDDEN_VISIBILITY)
check_cxx_compiler_flag(-fvisibility-inlines-hidden COMPILER_HAS_HIDDEN_INLINE_VISIBILITY)
option(USE_COMPILER_HIDDEN_VISIBILITY "Use HIDDEN visibility support if available." ON)
mark_as_advanced(USE_COMPILER_HIDDEN_VISIBILITY)
endif()
endmacro()
set(myDir ${CMAKE_CURRENT_LIST_DIR})
@@ -233,21 +251,6 @@ function(add_compiler_export_flags)
return()
endif()
if (CMAKE_COMPILER_IS_GNUCXX)
exec_program(${CMAKE_C_COMPILER} ARGS --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()
if(${_gcc_version} VERSION_LESS "4.2")
message(WARNING "GCC version older than 4.2")
return()
endif()
endif()
set (EXTRA_FLAGS "-fvisibility=hidden")
if(COMPILER_HAS_HIDDEN_INLINE_VISIBILITY)