diff options
Diffstat (limited to 'modules/FindExiv2.cmake')
| -rw-r--r-- | modules/FindExiv2.cmake | 101 |
1 files changed, 72 insertions, 29 deletions
diff --git a/modules/FindExiv2.cmake b/modules/FindExiv2.cmake index c9d8f539..5bef48be 100644 --- a/modules/FindExiv2.cmake +++ b/modules/FindExiv2.cmake @@ -2,42 +2,85 @@ # # EXIV2_MIN_VERSION - You can set this variable to the minimum version you need # before doing FIND_PACKAGE(Exiv2). The default is 0.12. +# +# Once done this will define +# +# EXIV2_FOUND - system has libexiv2 +# EXIV2_INCLUDE_DIR - the libexiv2 include directory +# EXIV2_LIBRARIES - Link these to use libexiv2 +# EXIV2_DEFINITIONS - Compiler switches required for using libexiv2 # -# All definitions come with new cmake macro PKG_CHECK_MODULES -if (EXIV2_INCLUDEDIR AND EXIV2_LIBRARIES) +if (EXIV2_INCLUDE_DIR AND EXIV2_LIBRARIES) # in cache already set(EXIV2_FOUND TRUE) -else (EXIV2_INCLUDEDIR AND EXIV2_LIBRARIES) - if (NOT WIN32) - find_package(PkgConfig REQUIRED) - - if(NOT EXIV2_MIN_VERSION) - set(EXIV2_MIN_VERSION "0.12") - endif(NOT EXIV2_MIN_VERSION) - - if (Exiv2_FIND_REQUIRED) - PKG_CHECK_MODULES(EXIV2 REQUIRED exiv2>=${EXIV2_MIN_VERSION}) - else (Exiv2_FIND_REQUIRED) - PKG_CHECK_MODULES(EXIV2 exiv2>=${EXIV2_MIN_VERSION}) - endif (Exiv2_FIND_REQUIRED) - - if(NOT EXIV2_FOUND) - message(STATUS "Cannot find Exiv2 library!") - endif(NOT EXIV2_FOUND) - else(NOT WIN32) - #Better check - set(EXIV2_FOUND TRUE) - endif (NOT WIN32) +else (EXIV2_INCLUDE_DIR AND EXIV2_LIBRARIES) + if (NOT WIN32) + # use pkg-config to get the directories and then use these values + # in the FIND_PATH() and FIND_LIBRARY() calls + include(UsePkgConfig) + + if(NOT EXIV2_MIN_VERSION) + set(EXIV2_MIN_VERSION "0.12") + endif(NOT EXIV2_MIN_VERSION) + + pkgconfig(exiv2 _EXIV2IncDir _EXIV2LinkDir _EXIV2LinkFlags _EXIV2Cflags) - if(EXIV2_FOUND) - set(EXIV2_DEFINITIONS ${EXIV2_CFLAGS}) - if (NOT Exiv2_FIND_QUIETLY) - message(STATUS "Found Exiv2: ${EXIV2_LIBRARIES}") - endif (NOT Exiv2_FIND_QUIETLY) + if(_EXIV2LinkFlags) + # query pkg-config asking for a Exiv2 >= 0.12 + exec_program(${PKGCONFIG_EXECUTABLE} ARGS --atleast-version=${EXIV2_MIN_VERSION} exiv2 RETURN_VALUE _return_VALUE OUTPUT_VARIABLE _pkgconfigDevNull ) + if(_return_VALUE STREQUAL "0") + message(STATUS "Found Exiv2 release >= ${EXIV2_MIN_VERSION}") + set(EXIV2_VERSION_GOOD_FOUND TRUE) + else(_return_VALUE STREQUAL "0") + message(STATUS "Found Exiv2 release < ${EXIV2_MIN_VERSION}") + endif(_return_VALUE STREQUAL "0") + else(_EXIV2LinkFlags) + set(EXIV2_FOUND FALSE) + set(EXIV2_VERSION_GOOD_FOUND FALSE) + message(STATUS "Cannot find Exiv2 library!") + endif(_EXIV2LinkFlags) + + else(NOT WIN32) + #Better check + set(EXIV2_VERSION_GOOD_FOUND TRUE) + endif (NOT WIN32) + + if(EXIV2_VERSION_GOOD_FOUND) + set(EXIV2_DEFINITIONS ${_EXIV2Cflags}) + + find_path(EXIV2_INCLUDE_DIR exiv2/exif.hpp + ${_EXIV2IncDir} + ) + + find_library(EXIV2_LIBRARIES NAMES exiv2 libexiv2 + PATHS + ${_EXIV2LinkDir} + ) + + if (EXIV2_INCLUDE_DIR AND EXIV2_LIBRARIES) + set(EXIV2_FOUND TRUE) + # TODO version check is missing + endif (EXIV2_INCLUDE_DIR AND EXIV2_LIBRARIES) + endif(EXIV2_VERSION_GOOD_FOUND) + if (EXIV2_FOUND) + if (NOT Exiv2_FIND_QUIETLY) + message(STATUS "Found Exiv2: ${EXIV2_LIBRARIES}") + endif (NOT Exiv2_FIND_QUIETLY) + else (EXIV2_FOUND) + if (Exiv2_FIND_REQUIRED) + if (NOT EXIV2_INCLUDE_DIR) + message(FATAL_ERROR "Could NOT find Exiv2 header files") + endif (NOT EXIV2_INCLUDE_DIR) + if (NOT EXIV2_LIBRARIES) + message(FATAL_ERROR "Could NOT find Exiv2 library") + endif (NOT EXIV2_LIBRARIES) + endif (Exiv2_FIND_REQUIRED) endif (EXIV2_FOUND) -endif (EXIV2_INCLUDEDIR AND EXIV2_LIBRARIES) + mark_as_advanced(EXIV2_INCLUDE_DIR EXIV2_LIBRARIES) + +endif (EXIV2_INCLUDE_DIR AND EXIV2_LIBRARIES) |