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| author | Arnaud Gelas <arnaud.gelas@sensefly.com> | 2018-02-26 12:09:08 (GMT) |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2018-03-08 15:05:14 (GMT) |
| commit | de348a9638bd51af4523f36c68884b901d4aff18 (patch) | |
| tree | 11380518793c5af265af86d0bead5b108def26e1 /Modules/GenerateExportHeader.cmake | |
| parent | 674c5b306671129bc4a854137c304f19e2c3bf65 (diff) | |
| download | CMake-de348a9638bd51af4523f36c68884b901d4aff18.zip CMake-de348a9638bd51af4523f36c68884b901d4aff18.tar.gz CMake-de348a9638bd51af4523f36c68884b901d4aff18.tar.bz2 | |
GenerateExportHeader: Add support for C projects
Previously only C++ projects were supported.
Fixes: #16967
Diffstat (limited to 'Modules/GenerateExportHeader.cmake')
| -rw-r--r-- | Modules/GenerateExportHeader.cmake | 47 |
1 files changed, 37 insertions, 10 deletions
diff --git a/Modules/GenerateExportHeader.cmake b/Modules/GenerateExportHeader.cmake index 17a3357..e6dcd00 100644 --- a/Modules/GenerateExportHeader.cmake +++ b/Modules/GenerateExportHeader.cmake @@ -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() |