Load X11 libraries at runtime

2021-08-03 20:31:27 +02:00
parent 6c11e9f27d
commit 6702802829
4 changed files with 295 additions and 78 deletions
--- a/cmake/FindFFMPEG.cmake
+++ b/cmake/FindFFMPEG.cmake
@@ -0,0 +1,144 @@
+# - Try to find FFMPEG
+# Once done this will define
+#  FFMPEG_FOUND - System has FFMPEG
+#  FFMPEG_INCLUDE_DIRS - The FFMPEG include directories
+#  FFMPEG_LIBRARIES - The libraries needed to use FFMPEG
+#  FFMPEG_LIBRARY_DIRS - The directory to find FFMPEG libraries
+#
+# written by Roy Shilkrot 2013 http://www.morethantechnical.com/
+#
+
+find_package(PkgConfig)
+
+
+MACRO(FFMPEG_FIND varname shortname headername)
+
+  IF(NOT WIN32)
+		PKG_CHECK_MODULES(PC_${varname} ${shortname})
+
+		FIND_PATH(${varname}_INCLUDE_DIR "${shortname}/${headername}" 
+			HINTS ${PC_${varname}_INCLUDEDIR} ${PC_${varname}_INCLUDE_DIRS}
+			NO_DEFAULT_PATH
+			)
+	ELSE()
+		FIND_PATH(${varname}_INCLUDE_DIR "${shortname}/${headername}")
+	ENDIF()
+		
+	IF(${varname}_INCLUDE_DIR STREQUAL "${varname}_INCLUDE_DIR-NOTFOUND")
+		message(STATUS "look for newer strcture")
+		IF(NOT WIN32)
+			PKG_CHECK_MODULES(PC_${varname} "lib${shortname}")
+
+			FIND_PATH(${varname}_INCLUDE_DIR "lib${shortname}/${headername}"
+				HINTS ${PC_${varname}_INCLUDEDIR} ${PC_${varname}_INCLUDE_DIRS}
+				NO_DEFAULT_PATH
+				)
+		ELSE()
+			FIND_PATH(${varname}_INCLUDE_DIR "lib${shortname}/${headername}")
+			IF(${${varname}_INCLUDE_DIR} STREQUAL "${varname}_INCLUDE_DIR-NOTFOUND")
+				#Desperate times call for desperate measures
+				MESSAGE(STATUS "globbing...")
+				FILE(GLOB_RECURSE ${varname}_INCLUDE_DIR "/ffmpeg*/${headername}")
+				MESSAGE(STATUS "found: ${${varname}_INCLUDE_DIR}")
+				IF(${varname}_INCLUDE_DIR)
+					GET_FILENAME_COMPONENT(${varname}_INCLUDE_DIR "${${varname}_INCLUDE_DIR}" PATH)
+					GET_FILENAME_COMPONENT(${varname}_INCLUDE_DIR "${${varname}_INCLUDE_DIR}" PATH)
+				ELSE()
+					SET(${varname}_INCLUDE_DIR "${varname}_INCLUDE_DIR-NOTFOUND")
+				ENDIF()
+			ENDIF()
+		ENDIF()
+	ENDIF()
+
+
+	IF(${${varname}_INCLUDE_DIR} STREQUAL "${varname}_INCLUDE_DIR-NOTFOUND")
+		MESSAGE(STATUS "Can't find includes for ${shortname}...")
+	ELSE()
+		MESSAGE(STATUS "Found ${shortname} include dirs: ${${varname}_INCLUDE_DIR}")
+
+		#GET_DIRECTORY_PROPERTY(FFMPEG_PARENT DIRECTORY ${${varname}_INCLUDE_DIR} PARENT_DIRECTORY)
+		GET_FILENAME_COMPONENT(FFMPEG_PARENT ${${varname}_INCLUDE_DIR} PATH)
+		MESSAGE(STATUS "Using FFMpeg dir parent as hint: ${FFMPEG_PARENT}")
+
+		IF(NOT WIN32)
+			FIND_LIBRARY(${varname}_LIBRARIES NAMES ${shortname}
+				HINTS ${PC_${varname}_LIBDIR} ${PC_${varname}_LIBRARY_DIR} ${FFMPEG_PARENT})
+		ELSE()
+			FIND_PATH(${varname}_LIBRARIES "${shortname}.dll.a" HINTS ${FFMPEG_PARENT})
+			#			FILE(GLOB_RECURSE ${varname}_LIBRARIES "${FFMPEG_PARENT}/*${shortname}.lib") 
+			# GLOBing is very bad... but windows sux, this is the only thing that works
+		ENDIF()
+
+		IF(${varname}_LIBRARIES STREQUAL "${varname}_LIBRARIES-NOTFOUND")
+			MESSAGE(STATUS "look for newer structure for library")
+			FIND_LIBRARY(${varname}_LIBRARIES NAMES lib${shortname}
+				HINTS ${PC_${varname}_LIBDIR} ${PC_${varname}_LIBRARY_DIR} ${FFMPEG_PARENT})
+		ENDIF()
+
+
+		IF(${varname}_LIBRARIES STREQUAL "${varname}_LIBRARIES-NOTFOUND")
+			MESSAGE(STATUS "Can't find lib for ${shortname}...")
+		ELSE()
+			MESSAGE(STATUS "Found ${shortname} libs: ${${varname}_LIBRARIES}")
+		ENDIF()
+
+
+		IF(NOT ${varname}_INCLUDE_DIR STREQUAL "${varname}_INCLUDE_DIR-NOTFOUND"
+			AND NOT ${varname}_LIBRARIES STREQUAL ${varname}_LIBRARIES-NOTFOUND)
+
+			MESSAGE(STATUS "found ${shortname}: include ${${varname}_INCLUDE_DIR} lib ${${varname}_LIBRARIES}")
+			SET(FFMPEG_${varname}_FOUND 1)
+			SET(FFMPEG_${varname}_INCLUDE_DIRS ${${varname}_INCLUDE_DIR})
+			SET(FFMPEG_${varname}_LIBS ${${varname}_LIBRARIES})
+		ELSE()
+			MESSAGE(STATUS "Can't find ${shortname}")
+		ENDIF()
+
+	ENDIF()
+
+ENDMACRO(FFMPEG_FIND)
+
+FFMPEG_FIND(LIBAVFORMAT avformat avformat.h)
+FFMPEG_FIND(LIBAVDEVICE avdevice avdevice.h)
+FFMPEG_FIND(LIBAVCODEC  avcodec  avcodec.h)
+FFMPEG_FIND(LIBAVUTIL   avutil   avutil.h)
+FFMPEG_FIND(LIBSWSCALE  swscale  swscale.h)
+
+SET(FFMPEG_FOUND "NO")
+IF   (FFMPEG_LIBAVFORMAT_FOUND AND 
+	FFMPEG_LIBAVDEVICE_FOUND AND 
+	FFMPEG_LIBAVCODEC_FOUND AND 
+	FFMPEG_LIBAVUTIL_FOUND AND
+	FFMPEG_LIBSWSCALE_FOUND
+	)
+
+
+    SET(FFMPEG_FOUND "YES")
+
+    SET(FFMPEG_INCLUDE_DIRS ${FFMPEG_LIBAVFORMAT_INCLUDE_DIRS})
+
+    SET(FFMPEG_LIBRARY_DIRS ${FFMPEG_LIBAVFORMAT_LIBRARY_DIRS})
+
+    SET(FFMPEG_LIBRARIES
+        ${FFMPEG_LIBAVFORMAT_LIBS}
+        ${FFMPEG_LIBAVDEVICE_LIBS}
+        ${FFMPEG_LIBAVCODEC_LIBS}
+        ${FFMPEG_LIBAVUTIL_LIBS}
+	${FFMPEG_LIBSWSCALE_LIBS}
+	)
+
+ELSE ()
+
+   MESSAGE(STATUS "Could not find FFMPEG")
+
+ENDIF()
+
+message(STATUS ${FFMPEG_LIBRARIES} ${FFMPEG_LIBAVFORMAT_LIBRARIES})
+
+include(FindPackageHandleStandardArgs)
+# handle the QUIETLY and REQUIRED arguments and set FFMPEG_FOUND to TRUE
+# if all listed variables are TRUE
+find_package_handle_standard_args(FFMPEG DEFAULT_MSG
+                                  FFMPEG_LIBRARIES FFMPEG_INCLUDE_DIRS)
+
+mark_as_advanced(FFMPEG_INCLUDE_DIRS FFMPEG_LIBRARY_DIRS FFMPEG_LIBRARIES)