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|
#!/bin/sh
# Builds ffmpeg, or one of the libraries that ffmpeg depends on, from source as a
# static library with lto. Only the components that gpu-screen-recorder uses are enabled.
# This is run by meson when the "ffmpeg_static" option is enabled.
set -eu
if [ $# -ne 5 ]; then
echo "usage: $0 <library> <source-dir> <build-dir> <install-prefix> <c-compiler>" >&2
exit 1
fi
library=$1
source_dir=$2
build_dir=$3
prefix=$4
compiler=$5
log_file=$build_dir/build.log
stamp_file=$prefix/$library.stamp
jobs=$(nproc 2>/dev/null || echo 4)
export CC=$compiler
export PKG_CONFIG_PATH=$prefix/lib/pkgconfig${PKG_CONFIG_PATH:+:$PKG_CONFIG_PATH}
require_program() {
if ! command -v "$1" >/dev/null 2>&1; then
echo "error: $1 is required to build $library from source" >&2
exit 1
fi
}
require_program pkg-config
require_program make
case $library in
nv-codec-headers)
set -- PREFIX="$prefix"
build() {
make -C "$source_dir" "$@" install
}
;;
x264)
require_program nasm
set -- --prefix="$prefix" \
--enable-static \
--enable-pic \
--enable-lto \
--disable-cli \
--disable-opencl
build() {
"$source_dir/configure" "$@"
make -j"$jobs"
make install
}
;;
opus)
set -- --prefix="$prefix" \
--disable-shared \
--enable-static \
--with-pic \
--disable-doc \
--disable-extra-programs \
CFLAGS="-O3 -flto -fPIC" \
LDFLAGS="-flto"
build() {
"$source_dir/configure" "$@"
make -j"$jobs"
make install
}
;;
mbedtls)
require_program cmake
require_program python3
set -- -DCMAKE_BUILD_TYPE=Release \
-DCMAKE_INSTALL_PREFIX="$prefix" \
-DCMAKE_INSTALL_LIBDIR=lib \
-DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON \
-DCMAKE_POSITION_INDEPENDENT_CODE=ON \
-DENABLE_TESTING=OFF \
-DENABLE_PROGRAMS=OFF \
-DUSE_SHARED_MBEDTLS_LIBRARY=OFF \
-DUSE_STATIC_MBEDTLS_LIBRARY=ON
build() {
# The whip muxer needs dtls-srtp, which mbedtls doesn't enable by default.
python3 "$source_dir/scripts/config.py" -f "$source_dir/include/mbedtls/mbedtls_config.h" set MBEDTLS_SSL_DTLS_SRTP
cmake -S "$source_dir" -B "$build_dir" "$@"
cmake --build "$build_dir" -j"$jobs"
cmake --install "$build_dir"
}
;;
srt)
require_program cmake
set -- -DCMAKE_BUILD_TYPE=Release \
-DCMAKE_INSTALL_PREFIX="$prefix" \
-DCMAKE_INSTALL_LIBDIR=lib \
-DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON \
-DCMAKE_POSITION_INDEPENDENT_CODE=ON \
-DENABLE_SHARED=OFF \
-DENABLE_STATIC=ON \
-DENABLE_APPS=OFF \
-DENABLE_EXAMPLES=OFF \
-DENABLE_TESTING=OFF \
-DENABLE_UNITTESTS=OFF \
-DUSE_ENCLIB=mbedtls \
-DMBEDTLS_PREFIX="$prefix" \
-DSSL_REQUIRED_MODULES=mbedtls
build() {
cmake -S "$source_dir" -B "$build_dir" "$@"
cmake --build "$build_dir" -j"$jobs"
cmake --install "$build_dir"
}
;;
ffmpeg)
require_program nasm
encoders=aac,flac,libx264,libopus,h264_nvenc,hevc_nvenc,av1_nvenc,h264_vaapi,hevc_vaapi,vp8_vaapi,vp9_vaapi,h264_vulkan,hevc_vulkan
muxers=mp4,mov,matroska,webm,flv,mpegts,hls,whip
protocols=file,pipe,tcp,udp,http,https,tls,rtmp,rtmps,libsrt
filters=abuffer,abuffersink,amix,aresample,aformat,anull
if pkg-config --atleast-version=1.16 libva; then
encoders=$encoders,av1_vaapi
else
echo "warning: libva is too old for av1 vaapi encoding" >&2
fi
if pkg-config --atleast-version=1.4.317 vulkan; then
encoders=$encoders,av1_vulkan
else
echo "warning: the vulkan headers are too old for av1 vulkan encoding" >&2
fi
# ffmpeg ignores $CC and the same compiler as gpu-screen-recorder has to be
# used because lto objects are not compatible between compilers.
set -- --prefix="$prefix" \
--cc="$compiler" \
--pkg-config-flags=--static \
--disable-debug \
--disable-everything \
--disable-autodetect \
--disable-programs \
--disable-doc \
--disable-avdevice \
--disable-swscale \
--disable-shared \
--enable-static \
--enable-pic \
--enable-lto \
--enable-gpl \
--enable-version3 \
--enable-network \
--enable-encoder="$encoders" \
--enable-muxer="$muxers" \
--enable-protocol="$protocols" \
--enable-filter="$filters" \
--enable-bsf=extract_extradata \
--enable-libx264 \
--enable-libopus \
--enable-libsrt \
--enable-mbedtls \
--enable-ffnvcodec \
--enable-nvenc \
--enable-cuda \
--enable-vaapi \
--enable-vulkan
build() {
"$source_dir/configure" "$@"
make -j"$jobs"
make install
}
;;
*)
echo "error: unknown library $library" >&2
exit 1
;;
esac
# Rebuilding takes a long time, only do it when the source or the configuration changed.
stamp="$source_dir $compiler $*"
if [ -f "$stamp_file" ] && [ "$(cat "$stamp_file")" = "$stamp" ]; then
exit 0
fi
rm -rf "$build_dir"
mkdir -p "$build_dir"
echo "Building $library, this takes a while. Output is written to $log_file" >&2
(
cd "$build_dir"
build "$@"
) >"$log_file" 2>&1 || {
echo "error: failed to build $library, see $log_file for details:" >&2
tail -n 30 "$log_file" >&2
exit 1
}
printf '%s' "$stamp" > "$stamp_file"
|
