kde-playground/libkdcraw/cmake/modules/FindKdcraw.cmake
2015-02-27 13:19:39 +00:00

157 lines
6.4 KiB
CMake

# Try to find the Kdcraw library
#
# Parameters:
# KDCRAW_LOCAL_DIR - If you have put a local version of libkdcraw into
# your source tree, set KDCRAW_LOCAL_DIR to the
# relative path from the root of your source tree
# to the libkdcraw local directory.
#
# Once done this will define
#
# KDCRAW_FOUND - System has libkdcraw
# KDCRAW_INCLUDE_DIR - The libkdcraw include directory/directories (for #include <libkdcraw/...> style)
# KDCRAW_LIBRARIES - Link these to use libkdcraw
# KDCRAW_DEFINITIONS - Compiler switches required for using libkdcraw
# KDCRAW_VERSION - Version of libkdcraw which was found
#
# Copyright (c) 2008-2011, Gilles Caulier, <caulier.gilles@gmail.com>
# Copyright (c) 2011, Michael G. Hansen, <mike@mghansen.de>
#
# Redistribution and use is allowed according to the terms of the BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
# Kdcraw_FIND_QUIETLY and Kdcraw_FIND_REQUIRED may be defined by CMake.
if (KDCRAW_INCLUDE_DIR AND KDCRAW_LIBRARIES AND KDCRAW_DEFINITIONS AND KDCRAW_VERSION)
if (NOT Kdcraw_FIND_QUIETLY)
message(STATUS "Found Kdcraw library in cache: ${KDCRAW_LIBRARIES}")
endif (NOT Kdcraw_FIND_QUIETLY)
# in cache already
set(KDCRAW_FOUND TRUE)
else (KDCRAW_INCLUDE_DIR AND KDCRAW_LIBRARIES AND KDCRAW_DEFINITIONS AND KDCRAW_VERSION)
if (NOT Kdcraw_FIND_QUIETLY)
message(STATUS "Check for Kdcraw library in local sub-folder...")
endif (NOT Kdcraw_FIND_QUIETLY)
# Check for a local version of the library.
if (KDCRAW_LOCAL_DIR)
find_file(KDCRAW_LOCAL_FOUND libkdcraw/version.h.cmake ${CMAKE_SOURCE_DIR}/${KDCRAW_LOCAL_DIR} NO_DEFAULT_PATH)
if (NOT KDCRAW_LOCAL_FOUND)
message(WARNING "KDCRAW_LOCAL_DIR specified as \"${KDCRAW_LOCAL_DIR}\" but libkdcraw could not be found there.")
endif (NOT KDCRAW_LOCAL_FOUND)
else (KDCRAW_LOCAL_DIR)
find_file(KDCRAW_LOCAL_FOUND libkdcraw/version.h.cmake ${CMAKE_SOURCE_DIR}/libkdcraw NO_DEFAULT_PATH)
if (KDCRAW_LOCAL_FOUND)
set(KDCRAW_LOCAL_DIR libkdcraw)
endif (KDCRAW_LOCAL_FOUND)
find_file(KDCRAW_LOCAL_FOUND libkdcraw/version.h.cmake ${CMAKE_SOURCE_DIR}/libs/libkdcraw NO_DEFAULT_PATH)
if (KDCRAW_LOCAL_FOUND)
set(KDCRAW_LOCAL_DIR libs/libkdcraw)
endif (KDCRAW_LOCAL_FOUND)
endif (KDCRAW_LOCAL_DIR)
if (KDCRAW_LOCAL_FOUND)
# We need two include directories: because the version.h file is put into the build directory
# TODO KDCRAW_INCLUDE_DIR sounds like it should contain only one directory...
set(KDCRAW_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/${KDCRAW_LOCAL_DIR} ${CMAKE_BINARY_DIR}/${KDCRAW_LOCAL_DIR})
set(KDCRAW_DEFINITIONS "-I${CMAKE_SOURCE_DIR}/${KDCRAW_LOCAL_DIR}" "-I${CMAKE_BINARY_DIR}/${KDCRAW_LOCAL_DIR}")
set(KDCRAW_LIBRARIES kdcraw)
if (NOT Kdcraw_FIND_QUIETLY)
message(STATUS "Found Kdcraw library in local sub-folder: ${CMAKE_SOURCE_DIR}/${KDCRAW_LOCAL_DIR}")
endif (NOT Kdcraw_FIND_QUIETLY)
set(KDCRAW_FOUND TRUE)
set(kdcraw_version_h_filename "${CMAKE_BINARY_DIR}/${KDCRAW_LOCAL_DIR}/libkdcraw/version.h")
else (KDCRAW_LOCAL_FOUND)
if (NOT WIN32)
if (NOT Kdcraw_FIND_QUIETLY)
message(STATUS "Check Kdcraw library using pkg-config...")
endif (NOT Kdcraw_FIND_QUIETLY)
# use FindPkgConfig to get the directories and then use these values
# in the find_path() and find_library() calls
include(FindPkgConfig)
pkg_check_modules(PC_KDCRAW libkdcraw)
if (PC_KDCRAW_FOUND)
# make sure the version is >= 0.2.0
# TODO: WHY?
if (PC_KDCRAW_VERSION VERSION_LESS 0.2.0)
message(STATUS "Found libkdcraw release < 0.2.0, too old")
set(KDCRAW_VERSION_GOOD_FOUND FALSE)
set(KDCRAW_FOUND FALSE)
else (PC_KDCRAW_VERSION VERSION_LESS 0.2.0)
set(KDCRAW_VERSION "${PC_KDCRAW_VERSION}")
if (NOT Kdcraw_FIND_QUIETLY)
message(STATUS "Found libkdcraw release ${KDCRAW_VERSION}")
endif (NOT Kdcraw_FIND_QUIETLY)
set(KDCRAW_VERSION_GOOD_FOUND TRUE)
endif (PC_KDCRAW_VERSION VERSION_LESS 0.2.0)
else (PC_KDCRAW_FOUND)
set(KDCRAW_VERSION_GOOD_FOUND FALSE)
endif (PC_KDCRAW_FOUND)
else (NOT WIN32)
# TODO: Why do we just assume the version is good?
set(KDCRAW_VERSION_GOOD_FOUND TRUE)
endif (NOT WIN32)
if (KDCRAW_VERSION_GOOD_FOUND)
set(KDCRAW_DEFINITIONS "${PC_KDCRAW_CFLAGS_OTHER}")
find_path(KDCRAW_INCLUDE_DIR libkdcraw/version.h ${PC_KDCRAW_INCLUDE_DIRS})
set(kdcraw_version_h_filename "${KDCRAW_INCLUDE_DIR}/libkdcraw/version.h")
find_library(KDCRAW_LIBRARIES NAMES kdcraw HINTS ${PC_KDCRAW_LIBRARY_DIRS})
if (KDCRAW_INCLUDE_DIR AND KDCRAW_LIBRARIES)
set(KDCRAW_FOUND TRUE)
else (KDCRAW_INCLUDE_DIR AND KDCRAW_LIBRARIES)
set(KDCRAW_FOUND FALSE)
endif (KDCRAW_INCLUDE_DIR AND KDCRAW_LIBRARIES)
endif (KDCRAW_VERSION_GOOD_FOUND)
if (KDCRAW_FOUND)
if (NOT Kdcraw_FIND_QUIETLY)
message(STATUS "Found libkdcraw: ${KDCRAW_LIBRARIES}")
endif (NOT Kdcraw_FIND_QUIETLY)
else (KDCRAW_FOUND)
if (Kdcraw_FIND_REQUIRED)
if (NOT KDCRAW_INCLUDE_DIR)
message(FATAL_ERROR "Could NOT find libkdcraw header files.")
else(NOT KDCRAW_INCLUDE_DIR)
message(FATAL_ERROR "Could NOT find libkdcraw library.")
endif (NOT KDCRAW_INCLUDE_DIR)
endif (Kdcraw_FIND_REQUIRED)
endif (KDCRAW_FOUND)
endif (KDCRAW_LOCAL_FOUND)
if (KDCRAW_FOUND)
# Find the version information, unless that was reported by pkg_search_module.
if (NOT KDCRAW_VERSION)
file(READ "${kdcraw_version_h_filename}" kdcraw_version_h_content)
# This is the line we are trying to find: static const char kdcraw_version[] = "1.22.4-beta_5+dfsg";
string(REGEX REPLACE ".*char +kdcraw_version\\[\\] += +\"([^\"]+)\".*" "\\1" KDCRAW_VERSION "${kdcraw_version_h_content}")
unset(kdcraw_version_h_content)
endif (NOT KDCRAW_VERSION)
unset(kdcraw_version_h_filename)
endif (KDCRAW_FOUND)
if (KDCRAW_FOUND)
mark_as_advanced(KDCRAW_INCLUDE_DIR KDCRAW_LIBRARIES KDCRAW_DEFINITIONS KDCRAW_VERSION KDCRAW_FOUND)
else (KDCRAW_FOUND)
# The library was not found, reset all related variables.
unset(KDCRAW_INCLUDE_DIR)
unset(KDCRAW_LIBRARIES)
unset(KDCRAW_DEFINITIONS)
unset(KDCRAW_VERSION)
endif (KDCRAW_FOUND)
endif (KDCRAW_INCLUDE_DIR AND KDCRAW_LIBRARIES AND KDCRAW_DEFINITIONS AND KDCRAW_VERSION)