49 lines
1.6 KiB
Bash
49 lines
1.6 KiB
Bash
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#!/bin/bash -x
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# https://jeromewu.github.io/build-ffmpeg-webassembly-version-part-3-v0.1/
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# verify Emscripten version
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emcc -v
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# configure FFMpeg with Emscripten
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CFLAGS="-s USE_PTHREADS"
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LDFLAGS="$CFLAGS -s INITIAL_MEMORY=33554432" # 33554432 bytes = 32 MB
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CONFIG_ARGS=(
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--target-os=none # use none to prevent any os specific configurations
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--arch=x86_32 # use x86_32 to achieve minimal architectural optimization
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--enable-cross-compile # enable cross compile
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--disable-x86asm # disable x86 asm
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--disable-inline-asm # disable inline asm
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--disable-stripping # disable stripping
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--disable-programs # disable programs build (incl. ffplay, ffprobe & ffmpeg)
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--disable-doc # disable doc
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--extra-cflags="$CFLAGS"
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--extra-cxxflags="$CFLAGS"
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--extra-ldflags="$LDFLAGS"
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--nm="llvm-nm -g"
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--ar=emar
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--as=llvm-as
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--ranlib=llvm-ranlib
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--cc=emcc
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--cxx=em++
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--objcc=emcc
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--dep-cc=emcc
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)
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emconfigure ./configure "${CONFIG_ARGS[@]}"
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# build dependencies
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emmake make -j
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# build ffmpeg.wasm
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mkdir -p wasm/dist
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ARGS=(
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-I. -I./fftools
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-Llibavcodec -Llibavdevice -Llibavfilter -Llibavformat -Llibavresample -Llibavutil -Llibpostproc -Llibswscale -Llibswresample
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-Qunused-arguments
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-o wasm/dist/ffmpeg.js fftools/ffmpeg_opt.c fftools/ffmpeg_filter.c fftools/ffmpeg_hw.c fftools/cmdutils.c fftools/ffmpeg.c
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-lavdevice -lavfilter -lavformat -lavcodec -lswresample -lswscale -lavutil -lm
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-s USE_SDL=2 # use SDL2
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-s USE_PTHREADS=1 # enable pthreads support
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-s INITIAL_MEMORY=33554432 # 33554432 bytes = 32 MB
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)
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emcc "${ARGS[@]}"
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