Hello to everyone. I've written the new module FindEXIF.cmake that looks for libexif and I'd like to be the maintainer for this module.
Attached to this email the FindEXIF.cmake. It works correctly on GNU/Linux and MacOSX, while on Windows it requires the environment variable EXIF_ROOT_DIR to be set because there isn't a default binaries installation for libexif on Windows, so the destination folder of the "make install" depends on the "prefix" option used to build libexif. I hope my module will be accepted. Bye Simone
# - Find libexif # Find the native EXIF includes and library. # Once done this will define: # # EXIF_ROOT_DIR - The base directory of EXIF library. # EXIF_INCLUDE_DIRS - Where to find exif-*.h header files. # EXIF_LIBRARIES - Libraries to be linked with executable. # EXIF_FOUND - True if EXIF library is found. # # EXIF_VERSION_STRING - The version of EXIF library found (x.y.z) # EXIF_VERSION_MAJOR - The major version of EXIF library # EXIF_VERSION_MINOR - The minor version of EXIF library # EXIF_VERSION_PATCH - The patch version of EXIF library # # Optional input variables: # # EXIF_USE_STATIC_LIB - This can be set to ON to use the static version of # the library. If it does not exist in the system, a warning is printed # and the shared library is used. # # If libexif is installed in a custom folder (this usually happens on Windows) # the environment variable EXIF_ROOT_DIR can be set to the base folder of # the library. # #============================================================================= # Copyright (C) 2011 Simone Rossetto <simro...@gmail.com> # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. #============================================================================= ### FIND section ### find_path(EXIF_ROOT_DIR NAMES "include/libexif/exif-data.h" PATHS ENV EXIF_ROOT_DIR) find_path(EXIF_INCLUDE_DIR NAMES "libexif/exif-data.h" HINTS ${EXIF_ROOT_DIR} PATHS ENV EXIF_ROOT_DIR PATH_SUFFIXES "include") find_library(EXIF_LIBRARY NAMES "exif" HINTS ${EXIF_ROOT_DIR} PATHS ENV EXIF_ROOT_DIR PATH_SUFFIXES "lib") find_file(_exif_pkg_config_file NAMES "libexif.pc" HINTS ${EXIF_ROOT_DIR} PATHS ENV EXIF_ROOT_DIR PATH_SUFFIXES "lib/pkgconfig" "pkgconfig") if(EXISTS ${_exif_pkg_config_file}) file(STRINGS "${_exif_pkg_config_file}" _exif_version REGEX "^Version: .*$") string(REGEX REPLACE "^.*Version: ([0-9]+).*$" "\\1" EXIF_VERSION_MAJOR "${_exif_version}") string(REGEX REPLACE "^.*Version: [0-9]+\\.([0-9]+).*$" "\\1" EXIF_VERSION_MINOR "${_exif_version}") string(REGEX REPLACE "^.*Version: [0-9]+\\.[0-9]+\\.([0-9]+).*$" "\\1" EXIF_VERSION_PATCH "${_exif_version}") set(EXIF_VERSION_STRING "${EXIF_VERSION_MAJOR}.${EXIF_VERSION_MINOR}.${EXIF_VERSION_PATCH}") else(EXISTS ${_exif_pkg_config_file}) set(EXIF_VERSION_STRING "") endif(EXISTS ${_exif_pkg_config_file}) ### OPTIONS and COMPONENTS section ### if(EXIF_USE_STATIC_LIB) set(_exif_shared_lib ${EXIF_LIBRARY}) if(WIN32 AND NOT MSVC) string(REPLACE ".dll.a" ".a" _exif_static_lib ${_exif_shared_lib}) elseif(APPLE) string(REPLACE ".dylib" ".a" _exif_static_lib ${_exif_shared_lib}) elseif(UNIX) string(REPLACE ".so" ".a" _exif_static_lib ${_exif_shared_lib}) endif() if(EXISTS ${_exif_static_lib}) set(EXIF_LIBRARY ${_exif_static_lib}) else(EXISTS ${_exif_static_lib}) message(WARNING "EXIF static library does not exist, using the shared one.") set(EXIF_LIBRARY ${_exif_shared_lib}) endif(EXISTS ${_exif_static_lib}) endif(EXIF_USE_STATIC_LIB) mark_as_advanced( EXIF_LIBRARY EXIF_INCLUDE_DIR _exif_pkg_config_file _exif_shared_lib _exif_static_lib) ### final check ### include(FindPackageHandleStandardArgs) find_package_handle_standard_args(EXIF REQUIRED_VARS EXIF_LIBRARY EXIF_INCLUDE_DIR VERSION_VAR EXIF_VERSION_STRING) if(EXIF_FOUND) set(EXIF_INCLUDE_DIRS ${EXIF_INCLUDE_DIR} "${EXIF_INCLUDE_DIR}/libexif") set(EXIF_LIBRARIES ${EXIF_LIBRARY}) endif(EXIF_FOUND)
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