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GenerateExportHeader: Add support for C projects

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Previously only C++ projects were supported.

Fixes: #16967
This commit is contained in:
Arnaud Gelas
2018-02-26 13:09:08 +01:00
committed by Brad King
parent 674c5b3066
commit de348a9638
1 changed files with 37 additions and 10 deletions
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47
Modules/GenerateExportHeader.cmake
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@@ -185,6 +185,7 @@
# :prop_tgt:`CXX_VISIBILITY_PRESET <<LANG>_VISIBILITY_PRESET>` and
# :prop_tgt:`VISIBILITY_INLINES_HIDDEN` instead.
include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
# TODO: Install this macro separately?
@@ -194,6 +195,13 @@ macro(_check_cxx_compiler_attribute _ATTRIBUTE _RESULT)
)
endmacro()
# TODO: Install this macro separately?
macro(_check_c_compiler_attribute _ATTRIBUTE _RESULT)
check_c_source_compiles("${_ATTRIBUTE} int somefunc() { return 0; }
int main() { return somefunc();}" ${_RESULT}
)
endmacro()
macro(_test_compiler_hidden_visibility)
if(CMAKE_COMPILER_IS_GNUCXX AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS "4.2")
@@ -213,9 +221,15 @@ macro(_test_compiler_hidden_visibility)
AND NOT CMAKE_CXX_COMPILER_ID MATCHES XL
AND NOT CMAKE_CXX_COMPILER_ID MATCHES PGI
AND NOT CMAKE_CXX_COMPILER_ID MATCHES Watcom)
check_cxx_compiler_flag(-fvisibility=hidden COMPILER_HAS_HIDDEN_VISIBILITY)
check_cxx_compiler_flag(-fvisibility-inlines-hidden
COMPILER_HAS_HIDDEN_INLINE_VISIBILITY)
if (CMAKE_CXX_COMPILER_LOADED)
check_cxx_compiler_flag(-fvisibility=hidden COMPILER_HAS_HIDDEN_VISIBILITY)
check_cxx_compiler_flag(-fvisibility-inlines-hidden
COMPILER_HAS_HIDDEN_INLINE_VISIBILITY)
else()
check_c_compiler_flag(-fvisibility=hidden COMPILER_HAS_HIDDEN_VISIBILITY)
check_c_compiler_flag(-fvisibility-inlines-hidden
COMPILER_HAS_HIDDEN_INLINE_VISIBILITY)
endif()
endif()
endmacro()
@@ -232,14 +246,27 @@ macro(_test_compiler_has_deprecated)
set(COMPILER_HAS_DEPRECATED "" CACHE INTERNAL
"Compiler support for a deprecated attribute")
else()
_check_cxx_compiler_attribute("__attribute__((__deprecated__))"
COMPILER_HAS_DEPRECATED_ATTR)
if(COMPILER_HAS_DEPRECATED_ATTR)
set(COMPILER_HAS_DEPRECATED "${COMPILER_HAS_DEPRECATED_ATTR}"
CACHE INTERNAL "Compiler support for a deprecated attribute")
if (CMAKE_CXX_COMPILER_LOADED)
_check_cxx_compiler_attribute("__attribute__((__deprecated__))"
COMPILER_HAS_DEPRECATED_ATTR)
if(COMPILER_HAS_DEPRECATED_ATTR)
set(COMPILER_HAS_DEPRECATED "${COMPILER_HAS_DEPRECATED_ATTR}"
CACHE INTERNAL "Compiler support for a deprecated attribute")
else()
_check_cxx_compiler_attribute("__declspec(deprecated)"
COMPILER_HAS_DEPRECATED)
endif()
else()
_check_cxx_compiler_attribute("__declspec(deprecated)"
COMPILER_HAS_DEPRECATED)
_check_c_compiler_attribute("__attribute__((__deprecated__))"
COMPILER_HAS_DEPRECATED_ATTR)
if(COMPILER_HAS_DEPRECATED_ATTR)
set(COMPILER_HAS_DEPRECATED "${COMPILER_HAS_DEPRECATED_ATTR}"
CACHE INTERNAL "Compiler support for a deprecated attribute")
else()
_check_c_compiler_attribute("__declspec(deprecated)"
COMPILER_HAS_DEPRECATED)
endif()
endif()
endif()
endmacro()