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| author | Rolf Eike Beer <eike@sf-mail.de> | 2015-09-22 06:11:50 +0200 |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2015-09-25 10:07:54 -0400 |
| commit | a27bc0ccacff7bc590ace2ce941f0552d05fd14c (patch) | |
| tree | b9f4b5e0ce15408cf38aa7db19af5ac4d900c850 /Modules | |
| parent | 7279f2939e98ae9ecfb8fda2dc82f6b0048b9316 (diff) | |
| download | cmake-a27bc0ccacff7bc590ace2ce941f0552d05fd14c.tar.gz | |
Check(Function|Library|Symbol)Exists: make it work if only C++ is enabled
Diffstat (limited to 'Modules')
| -rw-r--r-- | Modules/CheckFunctionExists.c | 3 | ||||
| -rw-r--r-- | Modules/CheckFunctionExists.cmake | 14 | ||||
| -rw-r--r-- | Modules/CheckLibraryExists.cmake | 13 | ||||
| -rw-r--r-- | Modules/CheckSymbolExists.cmake | 10 |
4 files changed, 35 insertions, 5 deletions
diff --git a/Modules/CheckFunctionExists.c b/Modules/CheckFunctionExists.c index 607b3e8c6a..fd29618ce8 100644 --- a/Modules/CheckFunctionExists.c +++ b/Modules/CheckFunctionExists.c @@ -1,5 +1,8 @@ #ifdef CHECK_FUNCTION_EXISTS +#ifdef __cplusplus +extern "C" +#endif char CHECK_FUNCTION_EXISTS(); #ifdef __CLASSIC_C__ int main(){ diff --git a/Modules/CheckFunctionExists.cmake b/Modules/CheckFunctionExists.cmake index d277c32822..5dd37517a8 100644 --- a/Modules/CheckFunctionExists.cmake +++ b/Modules/CheckFunctionExists.cmake @@ -57,14 +57,26 @@ macro(CHECK_FUNCTION_EXISTS FUNCTION VARIABLE) else() set(CHECK_FUNCTION_EXISTS_ADD_INCLUDES) endif() + + if(CMAKE_C_COMPILER_LOADED) + set(_cfe_source ${CMAKE_ROOT}/Modules/CheckFunctionExists.c) + elseif(CMAKE_CXX_COMPILER_LOADED) + set(_cfe_source ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckFunctionExists/CheckFunctionExists.cxx) + configure_file(${CMAKE_ROOT}/Modules/CheckFunctionExists.c "${_cfe_source}" COPYONLY) + else() + message(FATAL_ERROR "CHECK_FUNCTION_EXISTS needs either C or CXX language enabled") + endif() + try_compile(${VARIABLE} ${CMAKE_BINARY_DIR} - ${CMAKE_ROOT}/Modules/CheckFunctionExists.c + ${_cfe_source} COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} ${CHECK_FUNCTION_EXISTS_ADD_LIBRARIES} CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS} "${CHECK_FUNCTION_EXISTS_ADD_INCLUDES}" OUTPUT_VARIABLE OUTPUT) + unset(_cfe_source) + if(${VARIABLE}) set(${VARIABLE} 1 CACHE INTERNAL "Have function ${FUNCTION}") if(NOT CMAKE_REQUIRED_QUIET) diff --git a/Modules/CheckLibraryExists.cmake b/Modules/CheckLibraryExists.cmake index 95c595a21d..6b538233e3 100644 --- a/Modules/CheckLibraryExists.cmake +++ b/Modules/CheckLibraryExists.cmake @@ -53,15 +53,26 @@ macro(CHECK_LIBRARY_EXISTS LIBRARY FUNCTION LOCATION VARIABLE) set(CHECK_LIBRARY_EXISTS_LIBRARIES ${CHECK_LIBRARY_EXISTS_LIBRARIES} ${CMAKE_REQUIRED_LIBRARIES}) endif() + + if(CMAKE_C_COMPILER_LOADED) + set(_cle_source ${CMAKE_ROOT}/Modules/CheckFunctionExists.c) + elseif(CMAKE_CXX_COMPILER_LOADED) + set(_cle_source ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckLibraryExists/CheckFunctionExists.cxx) + configure_file(${CMAKE_ROOT}/Modules/CheckFunctionExists.c "${_cle_source}" COPYONLY) + else() + message(FATAL_ERROR "CHECK_FUNCTION_EXISTS needs either C or CXX language enabled") + endif() + try_compile(${VARIABLE} ${CMAKE_BINARY_DIR} - ${CMAKE_ROOT}/Modules/CheckFunctionExists.c + ${_cle_source} COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} LINK_LIBRARIES ${CHECK_LIBRARY_EXISTS_LIBRARIES} CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_LIBRARY_EXISTS_DEFINITION} -DLINK_DIRECTORIES:STRING=${LOCATION} OUTPUT_VARIABLE OUTPUT) + unset(_cle_source) if(${VARIABLE}) if(NOT CMAKE_REQUIRED_QUIET) diff --git a/Modules/CheckSymbolExists.cmake b/Modules/CheckSymbolExists.cmake index 79c5ba78ee..c4dff3faaf 100644 --- a/Modules/CheckSymbolExists.cmake +++ b/Modules/CheckSymbolExists.cmake @@ -44,10 +44,14 @@ # (To distribute this file outside of CMake, substitute the full # License text for the above reference.) - - macro(CHECK_SYMBOL_EXISTS SYMBOL FILES VARIABLE) - _CHECK_SYMBOL_EXISTS("${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckSymbolExists.c" "${SYMBOL}" "${FILES}" "${VARIABLE}" ) + if(CMAKE_C_COMPILER_LOADED) + _CHECK_SYMBOL_EXISTS("${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckSymbolExists.c" "${SYMBOL}" "${FILES}" "${VARIABLE}" ) + elseif(CMAKE_CXX_COMPILER_LOADED) + _CHECK_SYMBOL_EXISTS("${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckSymbolExists.cxx" "${SYMBOL}" "${FILES}" "${VARIABLE}" ) + else() + message(FATAL_ERROR "CHECK_SYMBOL_EXISTS needs either C or CXX language enabled") + endif() endmacro() macro(_CHECK_SYMBOL_EXISTS SOURCEFILE SYMBOL FILES VARIABLE) |