Link error when building with ffmpeg 5 without vulkan support

[CarterLi]

[0/1] Regenerating build files.
The Meson build system
Version: 0.61.1
Source dir: /Users/carter/libplacebo
Build dir: /Users/carter/libplacebo/build
Build type: native build
Project name: libplacebo
Project version: 4.195.0
C compiler for the host machine: cc (clang 13.0.0 "Apple clang version 13.0.0 (clang-1300.0.29.30)")
C linker for the host machine: cc ld64 711
C++ compiler for the host machine: c++ (clang 13.0.0 "Apple clang version 13.0.0 (clang-1300.0.29.30)")
C++ linker for the host machine: c++ ld64 711
Host machine cpu family: aarch64
Host machine cpu: arm64
Compiler for C supports arguments -Wincompatible-pointer-types: YES (cached)
Compiler for C supports link arguments -Wl,--exclude-libs=ALL: NO (cached)
Program python3 found: YES (/opt/homebrew/opt/python@3.10/bin/python3.10)
WARNING: Python files installed by Meson might not be found by python interpreter.
 This warning can be avoided by setting "python.platlibdir" option.
WARNING: Python files installed by Meson might not be found by python interpreter.
 This warning can be avoided by setting "python.purelibdir" option.
Library m found: YES
Dependency threads found: YES unknown (cached)
Header <pthread.h> has symbol "pthread_condattr_setclock" with dependency threads: NO (cached)
Dependency vulkan found: YES 1.2.198.1 (cached)
Found pkg-config: /opt/homebrew/bin/pkg-config (0.29.2)
Found CMake: /opt/homebrew/bin/cmake (3.22.2)
Run-time dependency epoxy found: NO (tried pkgconfig, framework and cmake)
Dependency shaderc found: YES 2019.1 (cached)
Dependency spirv-cross-c-shared found: YES 0.48.0 (cached)
Library version found: NO
Check usable header "d3d11_4.h" : NO (cached)
Run-time dependency libunwind found: NO (tried pkgconfig, framework and cmake)
Has header "execinfo.h" : YES (cached)
Library execinfo found: NO
Message: Skipping `glslang` because `shaderc` is available
Dependency lcms2 found: YES 2.13 (cached)
Configuring config.h using configuration
Configuring config_internal.h using configuration
Run-time dependency glfw3 found: NO (tried pkgconfig, framework and cmake)
Dependency sdl2 found: YES 2.0.20 (cached)
Dependency SDL2_image found: YES 2.0.5 (cached)
Dependency threads found: YES unknown (cached)
Dependency libavcodec found: YES 59.18.100 (cached)
Dependency libavformat found: YES 59.16.100 (cached)
Dependency libavutil found: YES 57.17.100 (cached)
Has header "nuklear.h" : YES (cached)
Configuring config_demos.h using configuration
Build targets in project: 9

libplacebo 4.195.0

  User defined options
    backend        : ninja
    buildtype      : release
    debug          : True
    vulkan-registry: /usr/local/share/vulkan/registry/vk.xml

Found ninja-1.10.2 at /opt/homebrew/bin/ninja
Cleaning... 41 files.
[27/61] Compiling C object demos/plplay.p/plplay.c.o
../demos/plplay.c:229:15: warning: 'thread_safe_callbacks' is deprecated [-Wdeprecated-declarations]
    p->codec->thread_safe_callbacks = 1;
              ^
/opt/homebrew/Cellar/ffmpeg/5.0/include/libavcodec/avcodec.h:1478:5: note: 'thread_safe_callbacks' has been explicitly marked deprecated here
    attribute_deprecated
    ^
/opt/homebrew/Cellar/ffmpeg/5.0/include/libavutil/attributes.h:100:49: note: expanded from macro 'attribute_deprecated'
#    define attribute_deprecated __attribute__((deprecated))
                                                ^
1 warning generated.
[61/61] Linking target demos/plplay
FAILED: demos/plplay
cc  -o demos/plplay demos/plplay.p/plplay.c.o demos/plplay.p/window.c.o demos/plplay.p/utils.c.o -Wl,-dead_strip_dylibs -Wl,-headerpad_max_install_names -Wl,-undefined,error -Wl,-rpath,@loader_path/../src -Wl,-rpath,/opt/homebrew/Cellar/ffmpeg/5.0/lib -Wl,-rpath,/opt/homebrew/lib -Wl,-rpath,/usr/local/lib -Wl,-rpath,/opt/homebrew/Cellar/little-cms2/2.13/lib demos/libsdl-vk.a src/libplacebo.195.dylib demos/libnuklear.a /opt/homebrew/Cellar/ffmpeg/5.0/lib/libavcodec.dylib /opt/homebrew/Cellar/ffmpeg/5.0/lib/libavformat.dylib /opt/homebrew/Cellar/ffmpeg/5.0/lib/libavutil.dylib /opt/homebrew/lib/libSDL2.dylib /usr/local/lib/libvulkan.dylib -lm
Undefined symbols for architecture arm64:
  "_av_vkfmt_from_pixfmt", referenced from:
      _map_frame in plplay.c.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
ninja: build stopped: subcommand failed.

OS: macOS 12.2.1 ( M1 )
Dependencies: Homebrew ffmpeg 5 ( built without vulkan support ), vulkan sdk for mac 1.2.198.1

[haasn]

Hi, this is a known issue upstream. @cyanreg

I suppose we could work around it for plplay in particular.

[lavilao]

short answer:
add the demos=false option
long answer:
cd libplacebo-master
mkdir build && cd build
meson .. -D demos=false
cd ..
DESTDIR="/testt/" ninja -C build install
this will put the compiled libplacbo on a folder "/test" after you can copy it to your root and replace the distro provided ones, this was tested on manjaro hope it helps you

[haasn]

Fixed upstream now.