new file: cmake/Modules/FindGD.cmake

cmake/Modules/FindGD.cmake

+# - Find GD
+# Find the native GD includes and library
+# This module defines
+#  GD_INCLUDE_DIR, where to find gd.h, etc.
+#  GD_LIBRARIES, the libraries needed to use GD.
+#  GD_FOUND, If false, do not try to use GD.
+# also defined, but not for general use are
+#  GD_LIBRARY, where to find the GD library.
+#  GD_SUPPORTS_PNG, GD_SUPPORTS_JPEG, GD_SUPPORTS_GIF, test
+#  support for image formats in GD.
+
+FIND_PATH(GD_INCLUDE_DIR gd.h
+/usr/local/include
+/usr/include
+)
+
+if(WIN32 AND NOT CYGWIN)
+  SET(GD_NAMES ${GD_NAMES} bgd)
+else(WIN32)
+  SET(GD_NAMES ${GD_NAMES} gd)
+endif(WIN32 AND NOT CYGWIN)
+
+FIND_LIBRARY(GD_LIBRARY
+  NAMES ${GD_NAMES}
+  PATHS /usr/lib64 /usr/lib /usr/local/lib
+  )
+
+IF (GD_LIBRARY AND GD_INCLUDE_DIR)
+    SET(GD_LIBRARIES ${GD_LIBRARY})
+    SET(GD_FOUND "YES")
+ELSE (GD_LIBRARY AND GD_INCLUDE_DIR)
+  SET(GD_FOUND "NO")
+ENDIF (GD_LIBRARY AND GD_INCLUDE_DIR)
+message("Found GD: ${GD_FOUND}")
+IF (GD_FOUND)
+	IF (WIN32 AND NOT CYGWIN)
+		SET(GD_SUPPORTS_PNG ON)
+		SET(GD_SUPPORTS_JPEG ON)
+		SET(GD_SUPPORTS_GIF ON)
+		get_filename_component(GD_LIBRARY_DIR ${GD_LIBRARY} PATH)
+	ELSE (WIN32 AND NOT CYGWIN)
+		INCLUDE(CheckLibraryExists)
+		GET_FILENAME_COMPONENT(GD_LIB_PATH ${GD_LIBRARY} PATH)
+		GET_FILENAME_COMPONENT(GD_LIB ${GD_LIBRARY} NAME)
+
+		CHECK_LIBRARY_EXISTS("${GD_LIBRARY}" "gdImagePng" "${GD_LIB_PATH}" GD_SUPPORTS_PNG)
+		IF (GD_SUPPORTS_PNG)
+			find_package(PNG)
+			IF (PNG_FOUND)
+				SET(GD_LIBRARIES ${GD_LIBRARIES} ${PNG_LIBRARIES})
+			SET(GD_INCLUDE_DIR ${GD_INCLUDE_DIR} ${PNG_INCLUDE_DIR})
+			ELSE (PNG_FOUND)
+				SET(GD_SUPPORTS_PNG "NO")
+			ENDIF (PNG_FOUND)
+		ENDIF (GD_SUPPORTS_PNG)
+
+		CHECK_LIBRARY_EXISTS("${GD_LIBRARY}" "gdImageJpeg" "${GD_LIB_PATH}" GD_SUPPORTS_JPEG)
+		IF (GD_SUPPORTS_JPEG)
+			find_package(JPEG)
+			IF (JPEG_FOUND)
+				SET(GD_LIBRARIES ${GD_LIBRARIES} ${JPEG_LIBRARIES})
+				SET(GD_INCLUDE_DIR ${GD_INCLUDE_DIR} ${JPEG_INCLUDE_DIR})
+			ELSE (JPEG_FOUND)
+				SET(GD_SUPPORTS_JPEG "NO")
+			ENDIF (JPEG_FOUND)
+		ENDIF (GD_SUPPORTS_JPEG)
+
+		CHECK_LIBRARY_EXISTS("${GD_LIBRARY}" "gdImageGif" "${GD_LIB_PATH}" GD_SUPPORTS_GIF)
+
+		# Trim the list of include directories
+		SET(GDINCTRIM)
+		FOREACH(GD_DIR ${GD_INCLUDE_DIR})
+			SET(GD_TMP_FOUND OFF)
+			FOREACH(GD_TRIMMED ${GDINCTRIM})
+				IF ("${GD_DIR}" STREQUAL "${GD_TRIMMED}")
+				SET(GD_TMP_FOUND ON)
+				ENDIF ("${GD_DIR}" STREQUAL "${GD_TRIMMED}")
+			ENDFOREACH(GD_TRIMMED ${GDINCTRIM})
+			IF (NOT GD_TMP_FOUND)
+				SET(GDINCTRIM "${GDINCTRIM}" "${GD_DIR}")
+			ENDIF (NOT GD_TMP_FOUND)
+		ENDFOREACH(GD_DIR ${GD_INCLUDE_DIR})
+		SET(GD_INCLUDE_DIR ${GDINCTRIM})
+
+		SET(GD_LIBRARY_DIR)
+
+		# Generate trimmed list of library directories and list of libraries
+		FOREACH(GD_LIB ${GD_LIBRARIES})
+			GET_FILENAME_COMPONENT(GD_NEXTLIBDIR ${GD_LIB} PATH)
+			SET(GD_TMP_FOUND OFF)
+			FOREACH(GD_LIBDIR ${GD_LIBRARY_DIR})
+				IF ("${GD_NEXTLIBDIR}" STREQUAL "${GD_LIBDIR}")
+					SET(GD_TMP_FOUND ON)
+				ENDIF ("${GD_NEXTLIBDIR}" STREQUAL "${GD_LIBDIR}")
+			ENDFOREACH(GD_LIBDIR ${GD_LIBRARIES})
+			IF (NOT GD_TMP_FOUND)
+				SET(GD_LIBRARY_DIR "${GD_LIBRARY_DIR}" "${GD_NEXTLIBDIR}")
+			ENDIF (NOT GD_TMP_FOUND)
+		ENDFOREACH(GD_LIB ${GD_LIBRARIES})
+	ENDIF (WIN32 AND NOT CYGWIN)
+ENDIF (GD_FOUND)
+
+IF (GD_FOUND)
+   IF (NOT GD_FIND_QUIETLY)
+      MESSAGE(STATUS "Found GD: ${GD_LIBRARY}")
+   ENDIF (NOT GD_FIND_QUIETLY)
+ELSE (GD_FOUND)
+   IF (GD_FIND_REQUIRED)
+      MESSAGE(FATAL_ERROR "Could not find GD library")
+   ENDIF (GD_FIND_REQUIRED)
+ENDIF (GD_FOUND)
+
+MARK_AS_ADVANCED(
+  GD_LIBRARY
+  GD_LIBRARIES
+  GD_INCLUDE_DIR
+  GD_LIBRARY_DIR
+  GD_SUPPORTS_PNG
+  GD_SUPPORTS_JPEG
+  GD_SUPPORTS_GIF
+)