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| author | Michael R Sweet <michael.r.sweet@gmail.com> | 2004-09-13 02:12:41 +0000 |
|---|---|---|
| committer | Michael R Sweet <michael.r.sweet@gmail.com> | 2004-09-13 02:12:41 +0000 |
| commit | 1ca225e19da3653cba2cd94543ab3f9019e83f3f (patch) | |
| tree | db00798b2765c3d1f9f7cd984519f06565addc24 /CMake/CheckFunctionWithHeaderExists.cmake | |
| parent | 12993c9e4352353960a97882bd057fe3b7b5a32b (diff) | |
Added (unsupported) CMake files (STR #499)
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@3829 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Diffstat (limited to 'CMake/CheckFunctionWithHeaderExists.cmake')
| -rw-r--r-- | CMake/CheckFunctionWithHeaderExists.cmake | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/CMake/CheckFunctionWithHeaderExists.cmake b/CMake/CheckFunctionWithHeaderExists.cmake new file mode 100644 index 000000000..7d824cd96 --- /dev/null +++ b/CMake/CheckFunctionWithHeaderExists.cmake @@ -0,0 +1,54 @@ +#
+# Check if the symbol exists in include files
+#
+# CHECK_FUNCTIONWITHHEADER_EXISTS - macro which checks the symbol exists in include files.
+# SYMBOL - symbol
+# FILES - include files to check
+# VARIABLE - variable to return result
+#
+
+MACRO(CHECK_FUNCTIONWITHHEADER_EXISTS SYMBOL FILES VARIABLE)
+ IF("${VARIABLE}" MATCHES "^${VARIABLE}$")
+ SET(CHECK_SYMBOL_EXISTS_CONTENT "/* */\n")
+ SET(MACRO_CHECK_SYMBOL_EXISTS_FLAGS ${CMAKE_REQUIRED_FLAGS})
+ IF(CMAKE_REQUIRED_LIBRARIES)
+ SET(CHECK_SYMBOL_EXISTS_LIBS
+ "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
+ ENDIF(CMAKE_REQUIRED_LIBRARIES)
+ FOREACH(FILE ${FILES})
+ SET(CHECK_SYMBOL_EXISTS_CONTENT
+ "${CHECK_SYMBOL_EXISTS_CONTENT}#include <${FILE}>\n")
+ ENDFOREACH(FILE)
+ SET(CHECK_SYMBOL_EXISTS_CONTENT
+ "${CHECK_SYMBOL_EXISTS_CONTENT}\nint main()\n{\n${SYMBOL};return 0;\n}\n")
+
+ FILE(WRITE ${CMAKE_BINARY_DIR}/CMakeTmp/CheckSymbolExists.c
+ "${CHECK_SYMBOL_EXISTS_CONTENT}")
+
+ MESSAGE(STATUS "Looking for ${SYMBOL}")
+ TRY_COMPILE(${VARIABLE}
+ ${CMAKE_BINARY_DIR}
+ ${CMAKE_BINARY_DIR}/CMakeTmp/CheckSymbolExists.c
+ CMAKE_FLAGS
+ -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_SYMBOL_EXISTS_FLAGS}
+ "${CHECK_SYMBOL_EXISTS_LIBS}"
+ OUTPUT_VARIABLE OUTPUT)
+ IF(${VARIABLE})
+ MESSAGE(STATUS "Looking for ${SYMBOL} - found")
+ SET(${VARIABLE} 1 CACHE INTERNAL "Have symbol ${SYMBOL}")
+ FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeOutput.log
+ "Determining if the ${SYMBOL} "
+ "exist passed with the following output:\n"
+ "${OUTPUT}\nFile ${CMAKE_BINARY_DIR}/CMakeTmp/CheckSymbolExists.c:\n"
+ "${CHECK_SYMBOL_EXISTS_CONTENT}\n")
+ ELSE(${VARIABLE})
+ MESSAGE(STATUS "Looking for ${SYMBOL} - not found.")
+ SET(${VARIABLE} "" CACHE INTERNAL "Have symbol ${SYMBOL}")
+ FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeError.log
+ "Determining if the ${SYMBOL} "
+ "exist failed with the following output:\n"
+ "${OUTPUT}\nFile ${CMAKE_BINARY_DIR}/CMakeTmp/CheckSymbolExists.c:\n"
+ "${CHECK_SYMBOL_EXISTS_CONTENT}\n")
+ ENDIF(${VARIABLE})
+ ENDIF("${VARIABLE}" MATCHES "^${VARIABLE}$")
+ENDMACRO(CHECK_FUNCTIONWITHHEADER_EXISTS)
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