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optipng: switch to bundled zlib and libpng

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Benefits:
 - newer versions of the libraries
    - zlib: 1.2.8 -> 1.2.11
	- libpng: 1.6.18beta04 -> 1.6.34
 - much fewer dependencies to install (as libs are already in optipng archive and we don't need napa)
 - much smaller build thanks to customised versions of zlib and libpng containing only APIs necessary for optipng itself: 238950 -> 177359 bytes
 - much faster build thanks to preconfigured libpng and stripped APIs: 2m15s -> 40s
 - much simpler build script: 77 -> 46 lines
This commit is contained in:
Ingvar Stepanyan
2020-02-25 18:35:17 +00:00
parent a056d1c363
commit 570e604be0
5 changed files with 6 additions and 958 deletions
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35
codecs/optipng/build.sh
View File

@@ -4,46 +4,13 @@ set -e
export OPTIMIZE="-Os"
export PREFIX="/src/build"
export CFLAGS="${OPTIMIZE} -I${PREFIX}/include/"
export CPPFLAGS="${OPTIMIZE} -I${PREFIX}/include/"
export LDFLAGS="${OPTIMIZE} -L${PREFIX}/lib/"
apt-get update
apt-get install -qqy autoconf libtool
echo "============================================="
echo "Compiling zlib"
echo "============================================="
test -n "$SKIP_ZLIB" || (
cd node_modules/zlib
emconfigure ./configure --prefix=${PREFIX}/
emmake make
emmake make install
)
echo "============================================="
echo "Compiling zlib done"
echo "============================================="
echo "============================================="
echo "Compiling libpng"
echo "============================================="
test -n "$SKIP_LIBPNG" || (
cd node_modules/libpng
autoreconf -i
emconfigure ./configure --with-zlib-prefix=${PREFIX}/ --prefix=${PREFIX}/
emmake make
emmake make install
)
echo "============================================="
echo "Compiling libpng done"
echo "============================================="
echo "============================================="
echo "Compiling optipng"
echo "============================================="
(
cd node_modules/optipng
emconfigure ./configure --prefix=${PREFIX} --with-system-libs
CFLAGS="${OPTIMIZE} -Isrc/zlib" emconfigure ./configure --prefix=${PREFIX}
emmake make
emmake make install
mkdir -p ${PREFIX}/lib