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Try to use "default" and "hidden" visibility when "protected" and "internal" aren't available

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This commit is contained in:
Chris Robinson
2011-09-20 16:53:05 -07:00
parent 97743e32c2
commit 4e19f82a2b
1 changed files with 23 additions and 4 deletions
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CMakeLists.txt
+23 -4
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@@ -180,13 +180,32 @@ IF(WIN32)
ENDIF()
ENDIF()
ELSE()
CHECK_C_COMPILER_FLAG(-fvisibility=internal HAVE_VISIBILITY_SWITCH)
SET(OLD_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
SET(CMAKE_REQUIRED_FLAGS "${OLD_REQUIRED_FLAGS} -Werror")
CHECK_C_SOURCE_COMPILES("int foo() __attribute__((visibility(\"protected\")));
int main() {return 0;}" HAVE_GCC_VISIBILITY)
IF(HAVE_VISIBILITY_SWITCH AND HAVE_GCC_VISIBILITY)
ADD_DEFINITIONS(-fvisibility=internal)
int main() {return 0;}" HAVE_GCC_PROTECTED_VISIBILITY)
IF(HAVE_GCC_PROTECTED_VISIBILITY)
SET(EXPORT_DECL "__attribute__((visibility(\"protected\")))")
ELSE()
CHECK_C_SOURCE_COMPILES("int foo() __attribute__((visibility(\"default\")));
int main() {return 0;}" HAVE_GCC_DEFAULT_VISIBILITY)
IF(HAVE_GCC_DEFAULT_VISIBILITY)
SET(EXPORT_DECL "__attribute__((visibility(\"default\")))")
ENDIF()
ENDIF()
CHECK_C_COMPILER_FLAG(-fvisibility=internal HAVE_VISIBILITY_INTERNAL_SWITCH)
IF(HAVE_VISIBILITY_INTERNAL_SWITCH)
ADD_DEFINITIONS(-fvisibility=internal)
ELSE()
CHECK_C_COMPILER_FLAG(-fvisibility=internal HAVE_VISIBILITY_HIDDEN_SWITCH)
IF(HAVE_VISIBILITY_HIDDEN_SWITCH)
ADD_DEFINITIONS(-fvisibility=hidden)
ENDIF()
ENDIF()
SET(CMAKE_REQUIRED_FLAGS "${OLD_REQUIRED_FLAGS}")
ENDIF()
CHECK_C_SOURCE_COMPILES("int foo(const char *str, ...) __attribute__((format(printf, 1, 2)));