FFmpeg/CMakeLists.txt - fails on Linux

Question

FFmpeg/CMakeLists.txt - fails on Linux

jamesroyer opened this issue 4 years ago · comments

PROBLEM

Attempts to build on Ubuntu 20.04 fails due to the order of the command line parameters. Below you can see the "-lavcodec" flag comes before the .o files that would reference them.

cd build
cmake .
make VERBOSE=1
...
usr/bin/c++ \
    -lavcodec -lavformat -lavfilter -lavdevice -lavutil -lswresample -lswscale \
    CMakeFiles/video-app.dir/src/main.cpp.o CMakeFiles/video-app.dir/src/load_frame.cpp.o \
    -o video-app \
    lib/glfw/src/libglfw3.a -lGL -lGLU -lpthread /usr/lib/x86_64-linux-gnu/librt.so -lm -ldl

SOLUTION

After many hours, I found a solution on stackoverflow. It required replacing "target_include_directories" and "target_link_options" with "target_link_libaries".

# libs/FFmpeg/CMakeLists.txt
cmake_minimum_required(VERSION 3.16)
project(FFmpeg)

find_package(PkgConfig REQUIRED)
pkg_check_modules(AVCODEC		REQUIRED IMPORTED_TARGET libavcodec)
pkg_check_modules(AVFORMAT		REQUIRED IMPORTED_TARGET libavformat)
pkg_check_modules(AVFILTER		REQUIRED IMPORTED_TARGET libavfilter)
pkg_check_modules(AVDEVICE		REQUIRED IMPORTED_TARGET libavdevice)
pkg_check_modules(AVUTIL		REQUIRED IMPORTED_TARGET libavutil)
pkg_check_modules(SWRESAMPLE		REQUIRED IMPORTED_TARGET libswresample)
pkg_check_modules(SWSCALE		REQUIRED IMPORTED_TARGET libswscale)

add_library(FFmpeg INTERFACE IMPORTED GLOBAL)

target_link_libraries(FFmpeg INTERFACE
	PkgConfig::AVCODEC
	PkgConfig::AVFORMAT
	PkgConfig::AVFILTER
	PkgConfig::AVDEVICE
	PkgConfig::AVUTIL
	PkgConfig::SWRESAMPLE
	PkgConfig::SWSCALE
)

Bartholomew Joyce · Answer 1 · Mon Jan 18 2021 18:37:50 GMT+0800 (China Standard Time)

Incredible! I'll test this on Mac as well and if it works I'll merge. Thanks a lot

Bartholomew Joyce · Answer 2 · Mon Jan 18 2021 18:44:10 GMT+0800 (China Standard Time)

Yep, works great.

liuyoudehama · Answer 3 · Tue Feb 09 2021 08:40:34 GMT+0800 (China Standard Time)

still got the issue on ubuntu 16.04.

the cmake log looks normal:

❯ cmake .. -- The C compiler identification is GNU 5.4.0 -- The CXX compiler identification is GNU 5.4.0 -- Check for working C compiler: /usr/bin/cc -- Check for working C compiler: /usr/bin/cc - works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Detecting C compile features -- Detecting C compile features - done -- Check for working CXX compiler: /usr/bin/c++ -- Check for working CXX compiler: /usr/bin/c++ - works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Detecting CXX compile features -- Detecting CXX compile features - done -- Looking for pthread.h -- Looking for pthread.h - found -- Performing Test CMAKE_HAVE_LIBC_PTHREAD -- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed -- Looking for pthread_create in pthreads -- Looking for pthread_create in pthreads - not found -- Looking for pthread_create in pthread -- Looking for pthread_create in pthread - found -- Found Threads: TRUE -- Found Doxygen: /usr/bin/doxygen (found version "1.8.11") found components: doxygen -- Using X11 for window creation -- Found X11: /usr/include -- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so;/usr/lib/x86_64-linux-gnu/libXext.so -- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so;/usr/lib/x86_64-linux-gnu/libXext.so - found -- Looking for gethostbyname -- Looking for gethostbyname - found -- Looking for connect -- Looking for connect - found -- Looking for remove -- Looking for remove - found -- Looking for shmat -- Looking for shmat - found -- Looking for IceConnectionNumber in ICE -- Looking for IceConnectionNumber in ICE - found -- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.1") -- Checking for module 'libavcodec' -- Found libavcodec, version 56.60.100 -- Checking for module 'libavformat' -- Found libavformat, version 56.40.101 -- Checking for module 'libavfilter' -- Found libavfilter, version 5.40.101 -- Checking for module 'libavdevice' -- Found libavdevice, version 56.4.100 -- Checking for module 'libavutil' -- Found libavutil, version 54.31.100 -- Checking for module 'libswresample' -- Found libswresample, version 1.2.101 -- Checking for module 'libswscale' -- Found libswscale, version 3.1.101 -- Configuring done -- Generating done -- Build files have been written to: /home/lydhm/video-app/build

got error on make:

❯ make VERBOSE=1 /usr/local/bin/cmake -S/home/lydhm/video-app -B/home/lydhm/video-app/build --check-build-system CMakeFiles/Makefile.cmake 0 /usr/local/bin/cmake -E cmake_progress_start /home/lydhm/video-app/build/CMakeFiles /home/lydhm/video-app/build/CMakeFiles/progress.marks make -f CMakeFiles/Makefile2 all make[1]: Entering directory '/home/lydhm/video-app/build' make -f lib/glfw/src/CMakeFiles/glfw.dir/build.make lib/glfw/src/CMakeFiles/glfw.dir/depend make[2]: Entering directory '/home/lydhm/video-app/build' cd /home/lydhm/video-app/build && /usr/local/bin/cmake -E cmake_depends "Unix Makefiles" /home/lydhm/video-app /home/lydhm/video-app/lib/glfw/src /home/lydhm/video-app/build /home/lydhm/video-app/build/lib/glfw/src /home/lydhm/video-app/build/lib/glfw/src/CMakeFiles/glfw.dir/DependInfo.cmake --color= Dependee "/home/lydhm/video-app/build/lib/glfw/src/CMakeFiles/glfw.dir/DependInfo.cmake" is newer than depender "/home/lydhm/video-app/build/lib/glfw/src/CMakeFiles/glfw.dir/depend.internal". Dependee "/home/lydhm/video-app/build/lib/glfw/src/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "/home/lydhm/video-app/build/lib/glfw/src/CMakeFiles/glfw.dir/depend.internal". Scanning dependencies of target glfw make[2]: Leaving directory '/home/lydhm/video-app/build' make -f lib/glfw/src/CMakeFiles/glfw.dir/build.make lib/glfw/src/CMakeFiles/glfw.dir/build make[2]: Entering directory '/home/lydhm/video-app/build' [ 4%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/context.c.o cd /home/lydhm/video-app/build/lib/glfw/src && /usr/bin/cc -D_GLFW_USE_CONFIG_H -I/home/lydhm/video-app/lib/glfw/include -I/home/lydhm/video-app/lib/glfw/src -I/home/lydhm/video-app/build/lib/glfw/src -fPIC -Wall -std=gnu99 -Wdeclaration-after-statement -o CMakeFiles/glfw.dir/context.c.o -c /home/lydhm/video-app/lib/glfw/src/context.c [ 9%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/init.c.o cd /home/lydhm/video-app/build/lib/glfw/src && /usr/bin/cc -D_GLFW_USE_CONFIG_H -I/home/lydhm/video-app/lib/glfw/include -I/home/lydhm/video-app/lib/glfw/src -I/home/lydhm/video-app/build/lib/glfw/src -fPIC -Wall -std=gnu99 -Wdeclaration-after-statement -o CMakeFiles/glfw.dir/init.c.o -c /home/lydhm/video-app/lib/glfw/src/init.c [ 14%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/input.c.o cd /home/lydhm/video-app/build/lib/glfw/src && /usr/bin/cc -D_GLFW_USE_CONFIG_H -I/home/lydhm/video-app/lib/glfw/include -I/home/lydhm/video-app/lib/glfw/src -I/home/lydhm/video-app/build/lib/glfw/src -fPIC -Wall -std=gnu99 -Wdeclaration-after-statement -o CMakeFiles/glfw.dir/input.c.o -c /home/lydhm/video-app/lib/glfw/src/input.c [ 19%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/monitor.c.o cd /home/lydhm/video-app/build/lib/glfw/src && /usr/bin/cc -D_GLFW_USE_CONFIG_H -I/home/lydhm/video-app/lib/glfw/include -I/home/lydhm/video-app/lib/glfw/src -I/home/lydhm/video-app/build/lib/glfw/src -fPIC -Wall -std=gnu99 -Wdeclaration-after-statement -o CMakeFiles/glfw.dir/monitor.c.o -c /home/lydhm/video-app/lib/glfw/src/monitor.c [ 23%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/vulkan.c.o cd /home/lydhm/video-app/build/lib/glfw/src && /usr/bin/cc -D_GLFW_USE_CONFIG_H -I/home/lydhm/video-app/lib/glfw/include -I/home/lydhm/video-app/lib/glfw/src -I/home/lydhm/video-app/build/lib/glfw/src -fPIC -Wall -std=gnu99 -Wdeclaration-after-statement -o CMakeFiles/glfw.dir/vulkan.c.o -c /home/lydhm/video-app/lib/glfw/src/vulkan.c [ 28%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/window.c.o cd /home/lydhm/video-app/build/lib/glfw/src && /usr/bin/cc -D_GLFW_USE_CONFIG_H -I/home/lydhm/video-app/lib/glfw/include -I/home/lydhm/video-app/lib/glfw/src -I/home/lydhm/video-app/build/lib/glfw/src -fPIC -Wall -std=gnu99 -Wdeclaration-after-statement -o CMakeFiles/glfw.dir/window.c.o -c /home/lydhm/video-app/lib/glfw/src/window.c [ 33%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/x11_init.c.o cd /home/lydhm/video-app/build/lib/glfw/src && /usr/bin/cc -D_GLFW_USE_CONFIG_H -I/home/lydhm/video-app/lib/glfw/include -I/home/lydhm/video-app/lib/glfw/src -I/home/lydhm/video-app/build/lib/glfw/src -fPIC -Wall -std=gnu99 -o CMakeFiles/glfw.dir/x11_init.c.o -c /home/lydhm/video-app/lib/glfw/src/x11_init.c [ 38%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/x11_monitor.c.o cd /home/lydhm/video-app/build/lib/glfw/src && /usr/bin/cc -D_GLFW_USE_CONFIG_H -I/home/lydhm/video-app/lib/glfw/include -I/home/lydhm/video-app/lib/glfw/src -I/home/lydhm/video-app/build/lib/glfw/src -fPIC -Wall -std=gnu99 -o CMakeFiles/glfw.dir/x11_monitor.c.o -c /home/lydhm/video-app/lib/glfw/src/x11_monitor.c [ 42%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/x11_window.c.o cd /home/lydhm/video-app/build/lib/glfw/src && /usr/bin/cc -D_GLFW_USE_CONFIG_H -I/home/lydhm/video-app/lib/glfw/include -I/home/lydhm/video-app/lib/glfw/src -I/home/lydhm/video-app/build/lib/glfw/src -fPIC -Wall -std=gnu99 -o CMakeFiles/glfw.dir/x11_window.c.o -c /home/lydhm/video-app/lib/glfw/src/x11_window.c [ 47%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/xkb_unicode.c.o cd /home/lydhm/video-app/build/lib/glfw/src && /usr/bin/cc -D_GLFW_USE_CONFIG_H -I/home/lydhm/video-app/lib/glfw/include -I/home/lydhm/video-app/lib/glfw/src -I/home/lydhm/video-app/build/lib/glfw/src -fPIC -Wall -std=gnu99 -o CMakeFiles/glfw.dir/xkb_unicode.c.o -c /home/lydhm/video-app/lib/glfw/src/xkb_unicode.c [ 52%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/posix_time.c.o cd /home/lydhm/video-app/build/lib/glfw/src && /usr/bin/cc -D_GLFW_USE_CONFIG_H -I/home/lydhm/video-app/lib/glfw/include -I/home/lydhm/video-app/lib/glfw/src -I/home/lydhm/video-app/build/lib/glfw/src -fPIC -Wall -std=gnu99 -o CMakeFiles/glfw.dir/posix_time.c.o -c /home/lydhm/video-app/lib/glfw/src/posix_time.c [ 57%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/posix_thread.c.o cd /home/lydhm/video-app/build/lib/glfw/src && /usr/bin/cc -D_GLFW_USE_CONFIG_H -I/home/lydhm/video-app/lib/glfw/include -I/home/lydhm/video-app/lib/glfw/src -I/home/lydhm/video-app/build/lib/glfw/src -fPIC -Wall -std=gnu99 -o CMakeFiles/glfw.dir/posix_thread.c.o -c /home/lydhm/video-app/lib/glfw/src/posix_thread.c [ 61%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/glx_context.c.o cd /home/lydhm/video-app/build/lib/glfw/src && /usr/bin/cc -D_GLFW_USE_CONFIG_H -I/home/lydhm/video-app/lib/glfw/include -I/home/lydhm/video-app/lib/glfw/src -I/home/lydhm/video-app/build/lib/glfw/src -fPIC -Wall -std=gnu99 -o CMakeFiles/glfw.dir/glx_context.c.o -c /home/lydhm/video-app/lib/glfw/src/glx_context.c [ 66%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/egl_context.c.o cd /home/lydhm/video-app/build/lib/glfw/src && /usr/bin/cc -D_GLFW_USE_CONFIG_H -I/home/lydhm/video-app/lib/glfw/include -I/home/lydhm/video-app/lib/glfw/src -I/home/lydhm/video-app/build/lib/glfw/src -fPIC -Wall -std=gnu99 -o CMakeFiles/glfw.dir/egl_context.c.o -c /home/lydhm/video-app/lib/glfw/src/egl_context.c [ 71%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/osmesa_context.c.o cd /home/lydhm/video-app/build/lib/glfw/src && /usr/bin/cc -D_GLFW_USE_CONFIG_H -I/home/lydhm/video-app/lib/glfw/include -I/home/lydhm/video-app/lib/glfw/src -I/home/lydhm/video-app/build/lib/glfw/src -fPIC -Wall -std=gnu99 -o CMakeFiles/glfw.dir/osmesa_context.c.o -c /home/lydhm/video-app/lib/glfw/src/osmesa_context.c [ 76%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/linux_joystick.c.o cd /home/lydhm/video-app/build/lib/glfw/src && /usr/bin/cc -D_GLFW_USE_CONFIG_H -I/home/lydhm/video-app/lib/glfw/include -I/home/lydhm/video-app/lib/glfw/src -I/home/lydhm/video-app/build/lib/glfw/src -fPIC -Wall -std=gnu99 -o CMakeFiles/glfw.dir/linux_joystick.c.o -c /home/lydhm/video-app/lib/glfw/src/linux_joystick.c [ 80%] Linking C static library libglfw3.a cd /home/lydhm/video-app/build/lib/glfw/src && /usr/local/bin/cmake -P CMakeFiles/glfw.dir/cmake_clean_target.cmake cd /home/lydhm/video-app/build/lib/glfw/src && /usr/local/bin/cmake -E cmake_link_script CMakeFiles/glfw.dir/link.txt --verbose=1 /usr/bin/ar qc libglfw3.a CMakeFiles/glfw.dir/context.c.o CMakeFiles/glfw.dir/init.c.o CMakeFiles/glfw.dir/input.c.o CMakeFiles/glfw.dir/monitor.c.o CMakeFiles/glfw.dir/vulkan.c.o CMakeFiles/glfw.dir/window.c.o CMakeFiles/glfw.dir/x11_init.c.o CMakeFiles/glfw.dir/x11_monitor.c.o CMakeFiles/glfw.dir/x11_window.c.o CMakeFiles/glfw.dir/xkb_unicode.c.o CMakeFiles/glfw.dir/posix_time.c.o CMakeFiles/glfw.dir/posix_thread.c.o CMakeFiles/glfw.dir/glx_context.c.o CMakeFiles/glfw.dir/egl_context.c.o CMakeFiles/glfw.dir/osmesa_context.c.o CMakeFiles/glfw.dir/linux_joystick.c.o /usr/bin/ranlib libglfw3.a make[2]: Leaving directory '/home/lydhm/video-app/build' [ 80%] Built target glfw make -f CMakeFiles/video-app.dir/build.make CMakeFiles/video-app.dir/depend make[2]: Entering directory '/home/lydhm/video-app/build' cd /home/lydhm/video-app/build && /usr/local/bin/cmake -E cmake_depends "Unix Makefiles" /home/lydhm/video-app /home/lydhm/video-app /home/lydhm/video-app/build /home/lydhm/video-app/build /home/lydhm/video-app/build/CMakeFiles/video-app.dir/DependInfo.cmake --color= Dependee "/home/lydhm/video-app/build/CMakeFiles/video-app.dir/DependInfo.cmake" is newer than depender "/home/lydhm/video-app/build/CMakeFiles/video-app.dir/depend.internal". Dependee "/home/lydhm/video-app/build/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "/home/lydhm/video-app/build/CMakeFiles/video-app.dir/depend.internal". Scanning dependencies of target video-app make[2]: Leaving directory '/home/lydhm/video-app/build' make -f CMakeFiles/video-app.dir/build.make CMakeFiles/video-app.dir/build make[2]: Entering directory '/home/lydhm/video-app/build' [ 85%] Building CXX object CMakeFiles/video-app.dir/src/main.cpp.o /usr/bin/c++ -DGL_SILENCE_DEPRECATION -I/home/lydhm/video-app/lib/glfw/include -std=gnu++14 -o CMakeFiles/video-app.dir/src/main.cpp.o -c /home/lydhm/video-app/src/main.cpp [ 90%] Building CXX object CMakeFiles/video-app.dir/src/video_reader.cpp.o /usr/bin/c++ -DGL_SILENCE_DEPRECATION -I/home/lydhm/video-app/lib/glfw/include -std=gnu++14 -o CMakeFiles/video-app.dir/src/video_reader.cpp.o -c /home/lydhm/video-app/src/video_reader.cpp /home/lydhm/video-app/src/video_reader.cpp: In function ‘bool video_reader_open(VideoReaderState*, const char*)’: /home/lydhm/video-app/src/video_reader.cpp:49:5: error: ‘AVCodecParameters’ was not declared in this scope AVCodecParameters* av_codec_params; ^ /home/lydhm/video-app/src/video_reader.cpp:49:24: error: ‘av_codec_params’ was not declared in this scope AVCodecParameters* av_codec_params; ^ /home/lydhm/video-app/src/video_reader.cpp:52:54: error: ‘AVStream {aka struct AVStream}’ has no member named ‘codecpar’ av_codec_params = av_format_ctx->streams[i]->codecpar; ^ /home/lydhm/video-app/src/video_reader.cpp:76:68: error: ‘avcodec_parameters_to_context’ was not declared in this scope if (avcodec_parameters_to_context(av_codec_ctx, av_codec_params) < 0) { ^ /home/lydhm/video-app/src/video_reader.cpp:90:33: error: ‘av_packet_alloc’ was not declared in this scope av_packet = av_packet_alloc(); ^ /home/lydhm/video-app/src/video_reader.cpp: In function ‘bool video_reader_read_frame(VideoReaderState*, uint8_t*, int64_t*)’: /home/lydhm/video-app/src/video_reader.cpp:119:63: error: ‘avcodec_send_packet’ was not declared in this scope response = avcodec_send_packet(av_codec_ctx, av_packet); ^ /home/lydhm/video-app/src/video_reader.cpp:125:64: error: ‘avcodec_receive_frame’ was not declared in this scope response = avcodec_receive_frame(av_codec_ctx, av_frame); ^ /home/lydhm/video-app/src/video_reader.cpp: In function ‘bool video_reader_seek_frame(VideoReaderState*, int64_t)’: /home/lydhm/video-app/src/video_reader.cpp:180:63: error: ‘avcodec_send_packet’ was not declared in this scope response = avcodec_send_packet(av_codec_ctx, av_packet); ^ /home/lydhm/video-app/src/video_reader.cpp:186:64: error: ‘avcodec_receive_frame’ was not declared in this scope response = avcodec_receive_frame(av_codec_ctx, av_frame); ^ /home/lydhm/video-app/src/video_reader.cpp: In function ‘void video_reader_close(VideoReaderState*)’: /home/lydhm/video-app/src/video_reader.cpp:207:37: error: ‘av_packet_free’ was not declared in this scope av_packet_free(&state->av_packet); ^ CMakeFiles/video-app.dir/build.make:95: recipe for target 'CMakeFiles/video-app.dir/src/video_reader.cpp.o' failed make[2]: *** [CMakeFiles/video-app.dir/src/video_reader.cpp.o] Error 1 make[2]: Leaving directory '/home/lydhm/video-app/build' CMakeFiles/Makefile2:176: recipe for target 'CMakeFiles/video-app.dir/all' failed make[1]: *** [CMakeFiles/video-app.dir/all] Error 2 make[1]: Leaving directory '/home/lydhm/video-app/build' Makefile:149: recipe for target 'all' failed make: *** [all] Error 2