132 lines
4.3 KiB
Bash
Executable File
132 lines
4.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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if [[ $# -lt 1 || $# -gt 2 ]]; then
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echo "usage: $0 <ffmpeg-sdk-root> [output-directory]" >&2
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exit 2
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fi
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script_dir="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
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repo_root="$(cd -- "$script_dir/../.." && pwd)"
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sdk_root="$(cd -- "$1" && pwd)"
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output_directory_input="${2:-$repo_root/build/native/linux-x64}"
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mkdir -p -- "$output_directory_input"
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output_directory="$(cd -- "$output_directory_input" && pwd)"
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include_directory="$sdk_root/include"
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library_directory="$sdk_root/lib"
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shim="$output_directory/libage_movie_ffmpeg.so"
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manifest="$script_dir/dependency-linux-x64.json"
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for command in cc readelf ldd python3 sort; do
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command -v "$command" >/dev/null 2>&1 || {
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echo "required command was not found: $command" >&2
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exit 1
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}
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done
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for required in \
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"$include_directory/libavformat/avformat.h" \
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"$library_directory/libavformat.so" \
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"$library_directory/libavcodec.so" \
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"$library_directory/libavutil.so" \
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"$library_directory/libswscale.so" \
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"$library_directory/libswresample.so" \
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"$sdk_root/LICENSE.txt"; do
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if [[ ! -e "$required" ]]; then
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echo "missing FFmpeg SDK file: $required" >&2
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exit 1
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fi
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done
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cc \
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-std=c11 -fPIC -fvisibility=hidden -O2 -Wall -Wextra \
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-I "$include_directory" \
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-shared -Wl,-z,defs -Wl,-z,origin -Wl,--enable-new-dtags -Wl,-rpath,'$ORIGIN' \
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-o "$shim" "$script_dir/age_movie.c" \
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-L "$library_directory" \
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-lavformat -lavcodec -lavutil -lswscale -lswresample
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runtime_libraries=(
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libavformat.so.62
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libavcodec.so.62
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libavutil.so.60
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libswscale.so.9
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libswresample.so.6
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)
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for runtime in "${runtime_libraries[@]}"; do
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source_library="$library_directory/$runtime"
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if [[ ! -e "$source_library" ]]; then
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echo "missing FFmpeg runtime library: $source_library" >&2
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exit 1
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fi
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cp --dereference -- "$source_library" "$output_directory/$runtime"
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done
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cp -- "$sdk_root/LICENSE.txt" "$output_directory/FFmpeg-LICENSE.txt"
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expected_outputs=(libage_movie_ffmpeg.so "${runtime_libraries[@]}")
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shopt -s nullglob
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for existing in "$output_directory"/*.so*; do
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existing_name="$(basename -- "$existing")"
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expected=false
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for expected_name in "${expected_outputs[@]}"; do
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if [[ "$existing_name" == "$expected_name" ]]; then
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expected=true
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break
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fi
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done
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if [[ "$expected" != true ]]; then
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echo "unexpected stale shared library in output directory: $existing" >&2
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exit 1
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fi
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done
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if ! readelf -h "$shim" | grep -Eq 'Class:[[:space:]]+ELF64'; then
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echo "native movie shim is not an ELF64 binary: $shim" >&2
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exit 1
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fi
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if ! readelf -h "$shim" | grep -Eq 'Machine:[[:space:]]+Advanced Micro Devices X86-64'; then
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echo "native movie shim is not an x86-64 binary: $shim" >&2
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exit 1
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fi
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if ! readelf -d "$shim" | grep -Fq '$ORIGIN'; then
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echo "native movie shim does not have an \$ORIGIN runtime search path: $shim" >&2
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exit 1
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fi
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ldd_output="$(ldd "$shim")"
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if [[ "$ldd_output" == *"not found"* ]]; then
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printf '%s\n' "$ldd_output" >&2
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echo "native movie bundle has unresolved shared-library dependencies" >&2
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exit 1
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fi
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for runtime in "${runtime_libraries[@]}"; do
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resolution="$(printf '%s\n' "$ldd_output" | grep -F "$runtime =>" || true)"
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if [[ "$resolution" != *"=> $output_directory/$runtime "* ]]; then
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printf '%s\n' "$ldd_output" >&2
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echo "$runtime did not resolve from the bundle directory" >&2
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exit 1
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fi
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done
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minimum_glibc="$(python3 -c \
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'import json, sys; print(json.load(open(sys.argv[1], encoding="utf-8"))["minimum_glibc"])' \
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"$manifest")"
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versioned_outputs=("$shim")
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for runtime in "${runtime_libraries[@]}"; do
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versioned_outputs+=("$output_directory/$runtime")
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done
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highest_glibc="$(readelf --version-info "${versioned_outputs[@]}" \
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| grep -Eo 'GLIBC_[0-9]+(\.[0-9]+)*' | sort -Vu | tail -n 1 || true)"
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if [[ -z "$highest_glibc" ]]; then
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echo "could not determine the bundle's glibc symbol-version requirement" >&2
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exit 1
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fi
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highest_glibc="${highest_glibc#GLIBC_}"
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newest_glibc="$(printf '%s\n%s\n' "$minimum_glibc" "$highest_glibc" | sort -Vu | tail -n 1)"
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if [[ "$newest_glibc" != "$minimum_glibc" ]]; then
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echo "bundle requires glibc $highest_glibc, newer than the pinned $minimum_glibc baseline" >&2
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exit 1
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fi
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printf '%s\n' "$shim"
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