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SFML shared libraries now use ELF visibility on Unixes with gcc >= 4

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This commit is contained in:
Laurent Gomila 2011-10-16 19:30:37 +02:00
parent 512a7c63cb
commit eed112d9ea
2 changed files with 59 additions and 33 deletions
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8
cmake/Macros.cmake
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@ -133,6 +133,14 @@ macro(sfml_add_library target)
endif()
endif()
# on Unix systems with gcc 4.x, we must hide public symbols by default
# (exported ones are explicitely marked)
if((LINUX OR MACOSX) AND COMPILER_GCC)
if(${GCC_VERSION} MATCHES "4\\..*")
set_target_properties(${target} PROPERTIES COMPILE_FLAGS -fvisibility=hidden)
endif()
endif()
# link the target to its SFML dependencies
if(THIS_DEPENDS)
target_link_libraries(${target} ${THIS_DEPENDS})

22
include/SFML/Config.hpp
View File

@ -97,7 +97,9 @@
////////////////////////////////////////////////////////////
// Define portable import / export macros
////////////////////////////////////////////////////////////
#if defined(SFML_SYSTEM_WINDOWS) && !defined(SFML_STATIC)
#if !defined(SFML_STATIC)
#if defined(SFML_SYSTEM_WINDOWS)
#ifdef SFML_EXPORTS
@ -120,9 +122,25 @@
#endif
#else // Linux, FreeBSD, Mac OS X
#if __GNUC__ >= 4
// gcc 4 has special keywords for showing/hidding symbols
#define SFML_API __attribute__ ((visibility ("default")))
#else
// Other platforms and static build don't need these export macros
// gcc < 4 has no mechanism to explicitely hide symbols, everything's exported
#define SFML_API
#endif
#endif
#else
// Static build doesn't need these export macros
#define SFML_API
#endif