diff options
| -rw-r--r-- | cmake/configure.cmake | 54 |
1 files changed, 30 insertions, 24 deletions
diff --git a/cmake/configure.cmake b/cmake/configure.cmake index 8b285e51..a4f3161f 100644 --- a/cmake/configure.cmake +++ b/cmake/configure.cmake @@ -24,6 +24,18 @@ ## process this file with CMake to produce Makefile +option (USE_CONFIG_H "Generate a file config.h for inclusion into C source code" OFF) +if (USE_CONFIG_H) + file( WRITE config.h "/* all settings defined by CMake. */\n\n" ) + ADD_DEFINITIONS (-D HAVE_CONFIG_H) + # Configure a header file to pass some of the CMake settings + # to the source code + # http://www.cmake.org/cmake/help/v2.8.8/cmake.html#command:configure_file + # CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/config.cmake.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h IMMEDIATE ) +else() + file( WRITE config.h "/* empty file, all settings defined by CMake. */" ) +endif() + include(CheckIncludeFiles) include(CheckIncludeFile) include(CheckSymbolExists) @@ -32,54 +44,48 @@ include(CheckLibraryExists) include(CheckTypeSize) include(CheckStructHasMember) +MACRO(DefineConfigH feature) +# message(STATUS feature=${feature}=${${feature}}) + if (${feature}) + if (${USE_CONFIG_H} STREQUAL ON) + FILE( APPEND config.h "#define ${feature} ${${feature}}\n") + else() + #ADD_DEFINITIONS (-D ${feature}) + ADD_DEFINITIONS (-D${feature}=${${feature}}) + endif () + endif () +ENDMACRO(DefineConfigH) + MACRO(DefineFunctionIfAvailable func feature) check_function_exists("${func}" "${feature}") - IF (${feature}) - ADD_DEFINITIONS (-D ${feature}) - ENDIF () + DefineConfigH(${feature}) ENDMACRO(DefineFunctionIfAvailable) MACRO(DefineHFileIfAvailable hfile feature) check_include_file("${hfile}" "${feature}") - IF (${feature}) - ADD_DEFINITIONS (-D ${feature}) - ENDIF () + DefineConfigH(${feature}) ENDMACRO(DefineHFileIfAvailable) MACRO(DefineTypeIfAvailable type feature) check_type_size("${type}" "${feature}") - IF (${feature}) - ADD_DEFINITIONS (-D ${feature}=${${feature}}) - ENDIF () + DefineConfigH(${feature}) ENDMACRO(DefineTypeIfAvailable) MACRO(DefineSymbolIfAvailable symbol hfile feature) check_symbol_exists("${symbol}" "${hfile}" "${feature}") - IF (${feature}) - ADD_DEFINITIONS (-D ${feature}) - ENDIF () + DefineConfigH(${feature}) ENDMACRO(DefineSymbolIfAvailable) MACRO(DefineStructHasMemberIfAvailable struct member hfile feature) check_struct_has_member("${struct}" "${member}" "${hfile}" "${feature}") - IF (${feature}) - ADD_DEFINITIONS (-D ${feature}) - ENDIF () + DefineConfigH(${feature}) ENDMACRO(DefineStructHasMemberIfAvailable) MACRO(DefineLibraryIfAvailable lib func location feature) check_library_exists("${lib}" "${func}" "${location}" "${feature}") - IF (${feature}) - ADD_DEFINITIONS (-D ${feature}) - ENDIF () + DefineConfigH(${feature}) ENDMACRO(DefineLibraryIfAvailable) -file( WRITE config.h "/* empty file, all settings defined by CMake. */" ) -# Configure a header file to pass some of the CMake settings -# to the source code -# http://www.cmake.org/cmake/help/v2.8.8/cmake.html#command:configure_file -# CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/config.cmake.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h IMMEDIATE ) - FILE( READ configure.ac CONFIG_AUTOMAKE ) STRING( REGEX MATCH "AC_INIT\\(\\[GNU Awk\\], ([0-9]+\\.[0-9]+\\.[0-9]+)" GAWK_AUTOMAKE_LINE_VERSION "${CONFIG_AUTOMAKE}") STRING( REGEX REPLACE ".*([0-9]+)\\.[0-9]+\\.[0-9]+.*" "\\1" GAWK_MAJOR_VERSION "${GAWK_AUTOMAKE_LINE_VERSION}") |