I386LINUX/util/I386LINUX/share/CMake/Modules/CheckIncludeFile.cmake

   1 #
   2 # Check if the include file exists.
   3 #
   4 # CHECK_INCLUDE_FILE - macro which checks the include file exists.
   5 # INCLUDE - name of include file
   6 # VARIABLE - variable to return result
   7 #
   8
   9 MACRO(CHECK_INCLUDE_FILE INCLUDE VARIABLE)
  10   IF("${VARIABLE}" MATCHES "^${VARIABLE}$")
  11     SET(MACRO_CHECK_INCLUDE_FILE_FLAGS ${CMAKE_REQUIRED_FLAGS})
  12     SET(CHECK_INCLUDE_FILE_VAR ${INCLUDE})
  13     CONFIGURE_FILE(${CMAKE_ROOT}/Modules/CheckIncludeFile.c.in
  14       ${CMAKE_BINARY_DIR}/CMakeTmp/CheckIncludeFile.c IMMEDIATE)
  15     MESSAGE(STATUS "Looking for ${INCLUDE}")
  16     TRY_COMPILE(${VARIABLE}
  17       ${CMAKE_BINARY_DIR}
  18       ${CMAKE_BINARY_DIR}/CMakeTmp/CheckIncludeFile.c
  19       CMAKE_FLAGS
  20       -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_INCLUDE_FILE_FLAGS}
  21       OUTPUT_VARIABLE OUTPUT)
  22     IF(${VARIABLE})
  23       MESSAGE(STATUS "Looking for ${INCLUDE} - found")
  24       SET(${VARIABLE} 1 CACHE INTERNAL "Have include ${INCLUDE}")
  25       FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeOutput.log
  26         "Determining if the include file ${INCLUDE} "
  27         "exists passed with the following output:\n"
  28         "${OUTPUT}\n\n")
  29     ELSE(${VARIABLE})
  30       MESSAGE(STATUS "Looking for ${INCLUDE} - not found.")
  31       SET(${VARIABLE} "" CACHE INTERNAL "Have include ${INCLUDE}")
  32       FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeError.log
  33         "Determining if the include file ${INCLUDE} "
  34         "exists failed with the following output:\n"
  35         "${OUTPUT}\n\n")
  36     ENDIF(${VARIABLE})
  37   ENDIF("${VARIABLE}" MATCHES "^${VARIABLE}$")
  38 ENDMACRO(CHECK_INCLUDE_FILE)