The following is the guide to build GPAC on Windows using MSYS2 and the MinGW gcc toolchain. It is a bit clunky and will probably only work on x64 and without cross-compilation.
Setting up¶
MSYS¶
First install MSYS2 x86_64 version from https://www.msys2.org/.
After installation, launch the msys2 terminal and update the packages with
If it's a first install you will probably have to close the terminal, relaunch it and execute the pacman command again.
Toolchain¶
We need to install some development tools :
pacman -S base-devel --needed
pacman -S vim git yasm mercurial subversion
pacman -S mingw-w64-x86_64-toolchain
pacman -R cmake
pacman -S mingw64/mingw-w64-x86_64-cmake
Hacks¶
From this point on, every command needs to be run in the MSYS2 MinGW 64-bit terminal (and not in the MSYS2 MSYS terminal)
For the build scripts to run properly we need some small hacks for commands that don't have the correct name, etc.:
cp /mingw64/bin/ar /mingw64/bin/x86_64-w64-mingw32-ar
cp /mingw64/bin/ranlib /mingw64/bin/x86_64-w64-mingw32-ranlib
cat > /mingw64/bin/x86_64-w64-mingw32-windres << 'EOF'
#!/bin/sh
/mingw64/bin/windres "$@"
EOF
Building GPAC¶
Get the source¶
In a common directory, clone the two repositories:
To reiterate, from this point on every command needs to be run in the MSYS2 MinGW 64-bit terminal (and not in the MSYS2 MSYS terminal)
Build the dependencies¶
In the deps_mingw directory start by getting the submodule.
And then launch the dependencies build script, point the first argument to the gpac source dir cloned before:
...now go grab a cup of coffee, and after a while, hopefully, all the dependencies should be built and copied in the right place in the gpac directory.
In the gpac dir, it should look something like this:
gpac $ ls extra_lib/lib/gcc/
avcodec-58.def libfreetype.dll.a libpng12.dll.a libvorbis.dll.a
avdevice-58.def libfreetype.la libpng12.la libvorbis.la
avfilter-7.def libjpeg.a libpostproc.dll.a libvorbisenc.a
avformat-58.def libjs.a libpthread.a libvorbisenc.dll.a
avutil-56.def libmad.a libpthread.dll.a libvorbisenc.la
cmake libmad.la librtmp.a libvorbisfile.a
engines-1_1 libNeptune.a librtmp.dll.a libvorbisfile.dll.a
fontconfig.def libogg.a libSDL2.a libvorbisfile.la
liba52.dll.a libogg.dll.a libSDL2.dll.a libwinpthread.a
liba52.la libogg.la libSDL2.la libwinpthread.dll.a
libaom.a libopencore-amrnb.a libSDL2_test.a libwinpthread.la
libavcodec.dll.a libopencore-amrnb.dll.a libSDL2_test.la libx264.a
libavdevice.dll.a libopencore-amrnb.la libSDL2main.a libz.a
libavfilter.dll.a libopencore-amrwb.a libSDL2main.la libz.so
libavformat.dll.a libopencore-amrwb.dll.a libssl.a libz.so.1
libavutil.dll.a libopencore-amrwb.la libssl.dll.a libz.so.1.2.11
libaxTLS.a libopenhevc.a libswresample.dll.a libZlib.a
libcrypto.a libopenjpeg.a libswscale.dll.a pkgconfig
libcrypto.dll.a libOpenSVCDec.a libtheora.dll.a postproc-55.def
libexpat.dll.a libPlatinum.a libtheora.la swresample-3.def
libexpat.la libPltMediaConnect.a libtheoradec.dll.a swscale-5.def
libfaad.a libPltMediaRenderer.a libtheoradec.la xvidcore.a
libfaad.la libPltMediaServer.a libtheoraenc.a xvidcore.dll.a
libfontconfig.dll.a libpng.dll.a libtheoraenc.la
libfontconfig.la libpng.la libvorbis.a
gpac $ ls bin/gcc/
avcodec-58.dll libfontconfig-1.dll librtmp-1.dll postproc-55.dll
avdevice-58.dll libfreetype-6.dll libssl-1_1-x64.dll SDL2.dll
avfilter-7.dll libogg-0.dll libtheora-0.dll swresample-3.dll
avformat-58.dll libopencore-amrnb-0.dll libtheoradec-1.dll swscale-5.dll
avutil-56.dll libopencore-amrwb-0.dll libvorbis-0.dll xvidcore.dll
liba52-0.dll libpng12-0.dll libvorbisenc-2.dll
libcrypto-1_1-x64.dll libpng-3.dll libvorbisfile-3.dll
libexpat-1.dll librtmp.dll libwinpthread-1.dll
(contents and versions may differ depending on updates and deprecated features)
You can pick and choose which dependency will be built by editing the file deps_mingw/zenbuild/zen-gpacdeps.sh and removing lines in the gpacdeps_get_deps function.
Build GPAC¶
If the dependencies have built successfully, we can now build gpac.
The following is a configure command that should work in this particular set up and tries to enable the most features, but you can tweak it to suit your needs and the dependencies you have actually built.
gpac $ ./configure --extra-ldflags=' -static-libstdc++ -static-libgcc ' --disable-lzma --use-zlib=local --sdl-cfg=../deps_mingw/zenbuild/build/release/x86_64-w64-mingw32/bin
and then finally:
The binaries will be in gpac/bin/gcc/, you can either make install, or adjust your PATH and LD_LIBRARY_PATH variables to use them for there.