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## FindPkgConfig.cmake
## by Albert Strasheim <http://students . ee . sun . ac . za/~albert/>
## and Alex Brooks (a.brooks at acfr . usyd . edu . au)
##
## This module finds packages using pkg-config, which retrieves
## information about packages from special metadata files.
##
## See http://www . freedesktop . org/Software/pkgconfig/
##
## -------------------------------------------------------------------
##
## Usage:
##
## INCLUDE( ${CMAKE_ROOT}/Modules/FindPkgConfig.cmake)
##
## IF ( CMAKE_EPT_PKGCONFIG_EXECUTABLE )
##
## # Find all the librtk stuff with pkg-config
## EPT_PKGCONFIG( "librtk >= 2.0" HAVE_RTK RTK_INCLUDE_DIRS RTK_DEFINES RTK_LINK_DIRS RTK_LIBS )
##
## ELSE ( CMAKE_EPT_PKGCONFIG_EXECUTABLE )
##
## # Can't find pkg-config -- have to find librtk somehow else
##
## ENDIF ( CMAKE_EPT_PKGCONFIG_EXECUTABLE )
##
##
## Notes:
##
## You can set the PKG_CONFIG_PATH environment variable to tell
## pkg-config where to search for .pc files. See pkg-config(1) for
## more information.
##
#
# FIXME: IF(WIN32) pkg-config --msvc-syntax ENDIF(WIN32) ???
#
# FIXME: Parsing of pkg-config output is specific to gnu-style flags
#
FIND_PROGRAM(CMAKE_EPT_PKGCONFIG_EXECUTABLE pkg-config)
MARK_AS_ADVANCED(CMAKE_EPT_PKGCONFIG_EXECUTABLE)
########################################
MACRO(EPT_PKGCONFIG_PARSE_FLAGS FLAGS INCLUDES DEFINES)
#MESSAGE("DEBUG: FLAGS: ${FLAGS}")
STRING(REGEX MATCHALL "-I[^ ]*" ${INCLUDES} "${FLAGS}")
STRING(REGEX REPLACE "-I" "" ${INCLUDES} "${${INCLUDES}}")
#MESSAGE("DEBUG: INCLUDES: ${${INCLUDES}}")
STRING(REGEX REPLACE "-I[^ ]*" "" ${DEFINES} "${FLAGS}")
#MESSAGE("DEBUG: DEFINES: ${${DEFINES}}")
ENDMACRO(EPT_PKGCONFIG_PARSE_FLAGS)
########################################
MACRO(EPT_PKGCONFIG_PARSE_LIBS LIBS LINKDIRS LINKLIBS)
#MESSAGE("DEBUG: LIBS: ${LIBS}")
STRING(REGEX MATCHALL "-L[^ ]*" ${LINKDIRS} "${LIBS}")
STRING(REGEX REPLACE "-L" "" ${LINKDIRS} "${${LINKDIRS}}")
#MESSAGE("DEBUG: LINKDIRS: ${${LINKDIRS}}")
STRING(REGEX MATCHALL "-l[^ ]*" ${LINKLIBS} "${LIBS}")
STRING(REGEX REPLACE "-l" "" ${LINKLIBS} "${${LINKLIBS}}")
#MESSAGE("DEBUG: LINKLIBS: ${${LINKLIBS}}")
ENDMACRO(EPT_PKGCONFIG_PARSE_LIBS)
########################################
MACRO(EPT_PKGCONFIG LIBRARY FOUND INCLUDE_DIRS DEFINES LINKDIRS LINKLIBS)
SET(${FOUND} 0)
MESSAGE("-- Looking for ${LIBRARY}")
IF(CMAKE_EPT_PKGCONFIG_EXECUTABLE)
# MESSAGE("DEBUG: pkg-config executable found")
EXEC_PROGRAM(${CMAKE_EPT_PKGCONFIG_EXECUTABLE}
ARGS "'${LIBRARY}'"
OUTPUT_VARIABLE EPT_PKGCONFIG_OUTPUT
RETURN_VALUE EPT_PKGCONFIG_RETURN)
IF(NOT EPT_PKGCONFIG_RETURN)
# set C_FLAGS and CXX_FLAGS
EXEC_PROGRAM(${CMAKE_EPT_PKGCONFIG_EXECUTABLE}
ARGS "--cflags '${LIBRARY}'"
OUTPUT_VARIABLE CMAKE_EPT_PKGCONFIG_C_FLAGS)
#SET(CMAKE_EPT_PKGCONFIG_CXX_FLAGS "${CMAKE_EPT_PKGCONFIG_C_FLAGS}")
EPT_PKGCONFIG_PARSE_FLAGS( "${CMAKE_EPT_PKGCONFIG_C_FLAGS}" ${INCLUDE_DIRS} ${DEFINES} )
# set LIBRARIES
EXEC_PROGRAM(${CMAKE_EPT_PKGCONFIG_EXECUTABLE}
ARGS "--libs '${LIBRARY}'"
OUTPUT_VARIABLE CMAKE_EPT_PKGCONFIG_LIBRARIES)
EPT_PKGCONFIG_PARSE_LIBS ( "${CMAKE_EPT_PKGCONFIG_LIBRARIES}" ${LINKDIRS} ${LINKLIBS} )
SET(${FOUND} 1)
MESSAGE("-- Looking for ${LIBRARY} -- found")
ELSE(NOT EPT_PKGCONFIG_RETURN)
MESSAGE("-- Looking for ${LIBRARY} -- not found")
SET(CMAKE_EPT_PKGCONFIG_C_FLAGS "")
SET(CMAKE_EPT_PKGCONFIG_CXX_FLAGS "")
SET(CMAKE_EPT_PKGCONFIG_LIBRARIES "")
SET(${INCLUDE_DIRS} "")
SET(${DEFINES} "")
SET(${LINKDIRS} "")
SET(${LINKLIBS} "")
ENDIF(NOT EPT_PKGCONFIG_RETURN)
set( ${INCLUDE_DIRS} ${${INCLUDE_DIRS}} CACHE STRING "${LIBRARY} include path" )
set( ${DEFINES} ${${DEFINES}} CACHE STRING "${LIBRARY} defines" )
set( ${LINKDIRS} ${${LINKDIRS}} CACHE STRING "${LIBRARY} link directories" )
set( ${LINKLIBS} ${${LINKLIBS}} CACHE STRING "${LIBRARY} link libraries" )
ELSE(CMAKE_EPT_PKGCONFIG_EXECUTABLE)
MESSAGE("-- pkg-config executable NOT FOUND")
ENDIF(CMAKE_EPT_PKGCONFIG_EXECUTABLE)
MESSAGE("Have ${LIBRARY} : ${${FOUND}}")
MESSAGE("${LIBRARY} include dirs: ${${INCLUDE_DIRS}}")
MESSAGE("${LIBRARY} defines : ${${DEFINES}}")
MESSAGE("${LIBRARY} link dirs : ${${LINKDIRS}}")
MESSAGE("${LIBRARY} link libs : ${${LINKLIBS}}")
ENDMACRO(EPT_PKGCONFIG)
|