diff options
Diffstat (limited to 'cmake/modules/FindBison.cmake')
| -rwxr-xr-x | cmake/modules/FindBison.cmake | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/cmake/modules/FindBison.cmake b/cmake/modules/FindBison.cmake new file mode 100755 index 0000000000..0320ae3ce1 --- /dev/null +++ b/cmake/modules/FindBison.cmake @@ -0,0 +1,52 @@ +# - Try to find Bison +# Once done this will define +# +# BISON_FOUND - system has Bison +# BISON_EXECUTABLE - path of the bison executable +# BISON_VERSION - the version string, like "2.5.31" +# + +MACRO(FIND_BISON) + FIND_PROGRAM(BISON_EXECUTABLE NAMES bison) + + IF(BISON_EXECUTABLE) + SET(BISON_FOUND TRUE) + + EXECUTE_PROCESS(COMMAND ${BISON_EXECUTABLE} --version + OUTPUT_VARIABLE _BISON_VERSION + ) + string (REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" BISON_VERSION "${_bison_VERSION}") + ENDIF(BISON_EXECUTABLE) + + IF(BISON_FOUND) + IF(NOT Bison_FIND_QUIETLY) + MESSAGE(STATUS "Found Bison: ${BISON_EXECUTABLE}") + ENDIF(NOT Bison_FIND_QUIETLY) + ELSE(BISON_FOUND) + IF(Bison_FIND_REQUIRED) + MESSAGE(FATAL_ERROR "Could not find Bison") + ENDIF(Bison_FIND_REQUIRED) + ENDIF(BISON_FOUND) +ENDMACRO(FIND_BISON) + +MACRO(BISON_GENERATOR _PREFIX _Y_INPUT _H_OUTPUT _CPP_OUTPUT) + IF(BISON_EXECUTABLE) + GET_FILENAME_COMPONENT(_Y_DIR ${_Y_INPUT} PATH) + ADD_CUSTOM_COMMAND( + OUTPUT ${_CPP_OUTPUT} + OUTPUT ${_H_OUTPUT} + DEPENDS ${_Y_INPUT} + COMMAND ${BISON_EXECUTABLE} + ARGS + -p ${_PREFIX} -o"${_CPP_OUTPUT}" + --defines="${_H_OUTPUT}" ${_Y_INPUT} + WORKING_DIRECTORY ${_Y_DIR} + ) + SET_SOURCE_FILES_PROPERTIES( + ${_CPP_OUTPUT} ${_H_OUTPUT} + GENERATED + ) + ELSE(BISON_EXECUTABLE) + MESSAGE(SEND_ERROR "Can't find bison program, and it's required") + ENDIF(BISON_EXECUTABLE) +ENDMACRO(BISON_GENERATOR) |