ARG GH_REPO=btbn/ffmpeg-builds FROM ghcr.io/$GH_REPO/base:latest ENV PATH="/opt/ct-ng/bin:${PATH}" RUN --mount=src=ct-ng-config,dst=/.config \ git clone 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 -type l -and -name '*.so' -and -not -ipath '*plugin*' -and -not -name 'libdl.*' -and -not -name 'libc.*' -and -not -name 'libm.*' -delete && \ find /opt/ct-ng -name 'libdl.a' -or -name 'libc.a' -or -name 'libm.a' -delete ADD toolchain.cmake /toolchain.cmake ADD cross.meson /cross.meson ENV FFBUILD_TARGET_FLAGS="--pkg-config=pkg-config --cross-prefix=x86_64-ffbuild-linux-gnu- --arch=x86_64 --target-os=linux" \ FFBUILD_TOOLCHAIN=x86_64-ffbuild-linux-gnu \ FFBUILD_CROSS_PREFIX="x86_64-ffbuild-linux-gnu-" \ FFBUILD_RUST_TARGET="x86_64-unknown-linux-gnu" \ FFBUILD_PREFIX=/opt/ffbuild \ FFBUILD_CMAKE_TOOLCHAIN=/toolchain.cmake \ PKG_CONFIG_LIBDIR=/opt/ffbuild/lib/pkgconfig \ CFLAGS="-static-libgcc -static-libstdc++ -I/opt/ffbuild/include -O2 -pipe -D_FORTIFY_SOURCE=2 -fstack-protector-strong -pthread" \ CXXFLAGS="-static-libgcc -static-libstdc++ -I/opt/ffbuild/include -O2 -pipe -D_FORTIFY_SOURCE=2 -fstack-protector-strong -pthread" \ LDFLAGS="-static-libgcc -static-libstdc++ -L/opt/ffbuild/lib -O2 -pipe -fstack-protector-strong -pie -fPIE -pthread -lm"