ARG GH_REPO=ghcr.io/btbn/ffmpeg-builds FROM $GH_REPO/base:latest RUN --mount=src=ct-ng-config,dst=/.config \ git clone --filter=blob:none https://github.com/crosstool-ng/crosstool-ng.git /ct-ng && cd /ct-ng && \ ./bootstrap && \ ./configure --enable-local && \ make -j$(nproc) && \ cp /.config .config && \ ./ct-ng build && \ cd / && \ rm -rf ct-ng # Prepare "cross" environment to heavily favour static builds RUN \ find /opt/ct-ng \ -name "*.dll" \ -or -name "*.dll.a" \ -delete && \ mkdir /opt/ffbuild RUN rustup target add i686-pc-windows-gnu ADD toolchain.cmake /toolchain.cmake ADD cross.meson /cross.meson ENV FFBUILD_TOOLCHAIN=i686-w64-mingw32 ENV PATH="/opt/ct-ng/bin:${PATH}" \ FFBUILD_TARGET_FLAGS="--pkg-config=pkg-config --cross-prefix=${FFBUILD_TOOLCHAIN}- --arch=i686 --target-os=mingw32" \ FFBUILD_CROSS_PREFIX=${FFBUILD_TOOLCHAIN}- \ FFBUILD_RUST_TARGET=i686-pc-windows-gnu \ FFBUILD_PREFIX=/opt/ffbuild \ FFBUILD_CMAKE_TOOLCHAIN=/toolchain.cmake \ PKG_CONFIG=pkg-config \ PKG_CONFIG_LIBDIR=/opt/ffbuild/lib/pkgconfig:/opt/ffbuild/share/pkgconfig \ CC="${FFBUILD_TOOLCHAIN}-gcc" \ CXX="${FFBUILD_TOOLCHAIN}-g++" \ LD="${FFBUILD_TOOLCHAIN}-ld" \ AR="${FFBUILD_TOOLCHAIN}-gcc-ar" \ RANLIB="${FFBUILD_TOOLCHAIN}-gcc-ranlib" \ NM="${FFBUILD_TOOLCHAIN}-gcc-nm" \ DLLTOOL="${FFBUILD_TOOLCHAIN}-dlltool" \ CFLAGS="-static-libgcc -static-libstdc++ -I/opt/ffbuild/include -O2 -pipe -D_FORTIFY_SOURCE=2 -fstack-protector-strong" \ CXXFLAGS="-static-libgcc -static-libstdc++ -I/opt/ffbuild/include -O2 -pipe -D_FORTIFY_SOURCE=2 -fstack-protector-strong" \ LDFLAGS="-static-libgcc -static-libstdc++ -L/opt/ffbuild/lib -O2 -pipe -fstack-protector-strong" \ STAGE_CFLAGS="-fno-semantic-interposition" \ STAGE_CXXFLAGS="-fno-semantic-interposition"