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@@ -11,48 +11,44 @@ MACRO(CHECK_SYMBOL_EXISTS SYMBOL FILES VARIABLE)
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IF("${VARIABLE}" MATCHES "^${VARIABLE}$")
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SET(CHECK_SYMBOL_EXISTS_CONTENT "/* */\n")
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SET(MACRO_CHECK_SYMBOL_EXISTS_FLAGS ${CMAKE_REQUIRED_FLAGS})
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- STRING(ASCII 35 POUND)
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- STRING(ASCII 40 OPEN_PARENT)
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- STRING(ASCII 41 CLOSE_PARENT)
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- SET(PARENTS "${OPEN_PARENT}${CLOSE_PARENT}")
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IF(CMAKE_REQUIRED_LIBRARIES)
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SET(CHECK_SYMBOL_EXISTS_LIBS
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"-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
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ENDIF(CMAKE_REQUIRED_LIBRARIES)
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FOREACH(FILE ${FILES})
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SET(CHECK_SYMBOL_EXISTS_CONTENT
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- "${CHECK_SYMBOL_EXISTS_CONTENT}${POUND}include <${FILE}>\n")
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+ "${CHECK_SYMBOL_EXISTS_CONTENT}#include <${FILE}>\n")
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ENDFOREACH(FILE)
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SET(CHECK_SYMBOL_EXISTS_CONTENT
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- "${CHECK_SYMBOL_EXISTS_CONTENT}\nvoid cmakeRequireSymbol${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${POUND}endif\n return 0;\n}\n")
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+ "${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")
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+
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+ FILE(WRITE ${CMAKE_BINARY_DIR}/CMakeTmp/CheckSymbolExists.c
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+ "${CHECK_SYMBOL_EXISTS_CONTENT}")
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- WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeTmp/CheckSymbolExists.c
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- "${CHECK_SYMBOL_EXISTS_CONTENT}")
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-
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MESSAGE(STATUS "Looking for ${SYMBOL}")
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TRY_COMPILE(${VARIABLE}
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- ${CMAKE_BINARY_DIR}
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- ${CMAKE_BINARY_DIR}/CMakeTmp/CheckSymbolExists.c
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- CMAKE_FLAGS
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- -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_SYMBOL_EXISTS_FLAGS}
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- "${CHECK_SYMBOL_EXISTS_LIBS}"
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- OUTPUT_VARIABLE OUTPUT)
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+ ${CMAKE_BINARY_DIR}
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+ ${CMAKE_BINARY_DIR}/CMakeTmp/CheckSymbolExists.c
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+ CMAKE_FLAGS
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+ -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_SYMBOL_EXISTS_FLAGS}
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+ "${CHECK_SYMBOL_EXISTS_LIBS}"
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+ OUTPUT_VARIABLE OUTPUT)
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IF(${VARIABLE})
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MESSAGE(STATUS "Looking for ${SYMBOL} - found")
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SET(${VARIABLE} 1 CACHE INTERNAL "Have symbol ${SYMBOL}")
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- WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeOutput.log
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+ FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeOutput.log
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"Determining if the ${SYMBOL} "
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"exist passed with the following output:\n"
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"${OUTPUT}\nFile ${CMAKE_BINARY_DIR}/CMakeTmp/CheckSymbolExists.c:\n"
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- "${CHECK_SYMBOL_EXISTS_CONTENT}" APPEND)
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+ "${CHECK_SYMBOL_EXISTS_CONTENT}")
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ELSE(${VARIABLE})
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MESSAGE(STATUS "Looking for ${SYMBOL} - not found.")
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SET(${VARIABLE} "" CACHE INTERNAL "Have symbol ${SYMBOL}")
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- WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeError.log
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+ FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeError.log
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"Determining if the ${SYMBOL} "
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"exist failed with the following output:\n"
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"${OUTPUT}\nFile ${CMAKE_BINARY_DIR}/CMakeTmp/CheckSymbolExists.c:\n"
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- "${CHECK_SYMBOL_EXISTS_CONTENT}" APPEND)
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+ "${CHECK_SYMBOL_EXISTS_CONTENT}")
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ENDIF(${VARIABLE})
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ENDIF("${VARIABLE}" MATCHES "^${VARIABLE}$")
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ENDMACRO(CHECK_SYMBOL_EXISTS)
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