diff options
Diffstat (limited to 'Modules/CheckSymbolExists.cmake')
| -rw-r--r-- | Modules/CheckSymbolExists.cmake | 34 |
1 files changed, 15 insertions, 19 deletions
diff --git a/Modules/CheckSymbolExists.cmake b/Modules/CheckSymbolExists.cmake index 0ec34a1..12382a9 100644 --- a/Modules/CheckSymbolExists.cmake +++ b/Modules/CheckSymbolExists.cmake @@ -11,48 +11,44 @@ MACRO(CHECK_SYMBOL_EXISTS SYMBOL FILES VARIABLE) IF("${VARIABLE}" MATCHES "^${VARIABLE}$") SET(CHECK_SYMBOL_EXISTS_CONTENT "/* */\n") SET(MACRO_CHECK_SYMBOL_EXISTS_FLAGS ${CMAKE_REQUIRED_FLAGS}) - STRING(ASCII 35 POUND) - STRING(ASCII 40 OPEN_PARENT) - STRING(ASCII 41 CLOSE_PARENT) - SET(PARENTS "${OPEN_PARENT}${CLOSE_PARENT}") IF(CMAKE_REQUIRED_LIBRARIES) SET(CHECK_SYMBOL_EXISTS_LIBS "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}") ENDIF(CMAKE_REQUIRED_LIBRARIES) FOREACH(FILE ${FILES}) SET(CHECK_SYMBOL_EXISTS_CONTENT - "${CHECK_SYMBOL_EXISTS_CONTENT}${POUND}include <${FILE}>\n") + "${CHECK_SYMBOL_EXISTS_CONTENT}#include <${FILE}>\n") ENDFOREACH(FILE) SET(CHECK_SYMBOL_EXISTS_CONTENT - "${CHECK_SYMBOL_EXISTS_CONTENT}\nvoid cmakeRequireSymbol${OPEN_PARENT}int dummy,...${CLOSE_PARENT}{${OPEN_PARENT}void${CLOSE_PARENT}dummy;}\nint main${PARENTS}\n{\n${POUND}ifndef ${SYMBOL}\n cmakeRequireSymbol${OPEN_PARENT}0,&${SYMBOL}${CLOSE_PARENT};\n${POUND}endif\n return 0;\n}\n") + "${CHECK_SYMBOL_EXISTS_CONTENT}\nvoid cmakeRequireSymbol(int dummy,...){(void)dummy;}\nint main()\n{\n#ifndef ${SYMBOL}\n cmakeRequireSymbol(0,&${SYMBOL});\n#endif\n return 0;\n}\n") + + FILE(WRITE ${CMAKE_BINARY_DIR}/CMakeTmp/CheckSymbolExists.c + "${CHECK_SYMBOL_EXISTS_CONTENT}") - WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeTmp/CheckSymbolExists.c - "${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) + ${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 ${SYMBOL}") - WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeOutput.log + 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}" APPEND) + "${CHECK_SYMBOL_EXISTS_CONTENT}") ELSE(${VARIABLE}) MESSAGE(STATUS "Looking for ${SYMBOL} - not found.") SET(${VARIABLE} "" CACHE INTERNAL "Have symbol ${SYMBOL}") - WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeError.log + 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}" APPEND) + "${CHECK_SYMBOL_EXISTS_CONTENT}") ENDIF(${VARIABLE}) ENDIF("${VARIABLE}" MATCHES "^${VARIABLE}$") ENDMACRO(CHECK_SYMBOL_EXISTS) |