diff --git a/cmake/ParseConfigHeader.cmake b/cmake/ParseConfigHeader.cmake new file mode 100644 index 000000000..b759fd1f5 --- /dev/null +++ b/cmake/ParseConfigHeader.cmake @@ -0,0 +1,17 @@ +file(READ "${CMAKE_CURRENT_SOURCE_DIR}/src/config.h" CONFIG_HEADER_CONTENT) + +set(BLANK_OR_BACKSLASH_PATTERN "[ \t\r\n\\]+") +set(VALID_IDENTIFIER_PATTERN "[A-Za-z_]+[A-Za-z_0-9]*") +set(VALID_VALUE_PATTERN [=["?[A-Za-z_0-9.-]+"?]=]) # not really correct but does the job since the config.h file hopefully will have been checked by a C preprocessor. +set(MACRO_REGEX "(// )?\#define${BLANK_OR_BACKSLASH_PATTERN}(${VALID_IDENTIFIER_PATTERN})${BLANK_OR_BACKSLASH_PATTERN}(${VALID_VALUE_PATTERN})") + +string(REGEX MATCHALL ${MACRO_REGEX} MACRO_LIST ${CONFIG_HEADER_CONTENT}) + +set(CONFIG_HEADER_FLAGS ${MACRO_LIST}) +list(FILTER CONFIG_HEADER_FLAGS INCLUDE REGEX "^.+SUPPORT_") +list(TRANSFORM CONFIG_HEADER_FLAGS REPLACE ${MACRO_REGEX} [[\2=OFF]] REGEX "^//") +list(TRANSFORM CONFIG_HEADER_FLAGS REPLACE ${MACRO_REGEX} [[\2=ON]]) + +set(CONFIG_HEADER_VALUES ${MACRO_LIST}) +list(FILTER CONFIG_HEADER_VALUES EXCLUDE REGEX "(^.+SUPPORT_)|(^//)") +list(TRANSFORM CONFIG_HEADER_VALUES REPLACE ${MACRO_REGEX} [[\2=\3]])