# Sets extra compile flags for a target, depending on the compiler being used.

# Currently, only GCC is supported.

MACRO(WEBKIT_SET_EXTRA_COMPILER_FLAGS _target)

  IF (${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU")

    GET_TARGET_PROPERTY(OLD_COMPILE_FLAGS ${_target} COMPILE_FLAGS)

    IF (${OLD_COMPILE_FLAGS} STREQUAL "OLD_COMPILE_FLAGS-NOTFOUND")

        SET(OLD_COMPILE_FLAGS "")

    ENDIF ()

    IF (SHARED_CORE)

        SET_TARGET_PROPERTIES (${_target} PROPERTIES

            COMPILE_FLAGS "-fno-exceptions -fstrict-aliasing ${OLD_COMPILE_FLAGS}")

    ELSE ()

        SET_TARGET_PROPERTIES (${_target} PROPERTIES

            COMPILE_FLAGS "-fno-exceptions -fstrict-aliasing -fvisibility=hidden ${OLD_COMPILE_FLAGS}")

    ENDIF ()

    UNSET(OLD_COMPILE_FLAGS)

  ENDIF ()

ENDMACRO()

# Append the given flag to the target property.

# Builds on top of GET_TARGET_PROPERTY() and SET_TARGET_PROPERTIES()

MACRO (ADD_TARGET_PROPERTIES _target _property _flags)

  GET_TARGET_PROPERTY (_tmp ${_target} ${_property})

  IF (NOT _tmp)

    SET (_tmp "")

  ENDIF (NOT _tmp)

  FOREACH (f ${_flags})

    SET (_tmp "${_tmp} ${f}")

  ENDFOREACH (f ${_flags})

  SET_TARGET_PROPERTIES (${_target} PROPERTIES ${_property} ${_tmp})

  UNSET (_tmp)

ENDMACRO (ADD_TARGET_PROPERTIES _target _property _flags)

# Append the given dependencies to the source file

MACRO(ADD_SOURCE_DEPENDENCIES _source _deps)

  GET_SOURCE_FILE_PROPERTY(_tmp ${_source} OBJECT_DEPENDS)

  IF (NOT _tmp)

    SET (_tmp "")

  ENDIF ()

  FOREACH (f ${_deps})

    LIST(APPEND _tmp "${f}")

  ENDFOREACH ()

  SET_SOURCE_FILES_PROPERTIES(${_source} PROPERTIES OBJECT_DEPENDS "${_tmp}")

  UNSET(_tmp)

ENDMACRO()

# Append the given dependencies to the source file

# This one consider the given dependencies are in ${DERIVED_SOURCES_DIR}

# and prepends this to every member of dependencies list

MACRO(ADD_SOURCE_DERIVED_DEPENDENCIES _source _deps)

  SET(_tmp "")

  FOREACH (f ${_deps})

    LIST(APPEND _tmp "${DERIVED_SOURCES_DIR}/${f}")

  ENDFOREACH ()

  ADD_SOURCE_DEPENDENCIES(${_source} ${_tmp})

  UNSET(_tmp)

ENDMACRO()