fully static builds of curl, runs anywhere https://github.com/moparisthebest/static-curl
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# to test locally, run one of:
# docker run --rm -v $(pwd):/tmp -w /tmp -e ARCH=amd64 alpine /tmp/build.sh
# docker run --rm -v $(pwd):/tmp -w /tmp -e ARCH=aarch64 multiarch/alpine:aarch64-latest-stable /tmp/build.sh
# docker run --rm -v $(pwd):/tmp -w /tmp -e ARCH=ARCH_HERE ALPINE_IMAGE_HERE /tmp/build.sh
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[ "$1" != "" ] && CURL_VERSION="$1"
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set -exu
if [ ! -f curl-${CURL_VERSION}.tar.gz ]
# for gpg verification of the curl download below
apk add gnupg
wget https://curl.haxx.se/download/curl-${CURL_VERSION}.tar.gz https://curl.haxx.se/download/curl-${CURL_VERSION}.tar.gz.asc
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# convert mykey.asc to a .pgp file to use in verification
gpg --no-default-keyring --yes -o ./curl.gpg --dearmor mykey.asc
# this has a non-zero exit code if it fails, which will halt the script
gpg --no-default-keyring --keyring ./curl.gpg --verify curl-${CURL_VERSION}.tar.gz.asc
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rm -rf "curl-${CURL_VERSION}/"
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tar xzf curl-${CURL_VERSION}.tar.gz
cd curl-${CURL_VERSION}/
# dependencies to build curl
apk add build-base clang openssl-dev nghttp2-dev nghttp2-static libssh2-dev libssh2-static
# these are missing on at least armhf
apk add openssl-libs-static zlib-static || true
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# gcc is apparantly incapable of building a static binary, even gcc -static helloworld.c ends up linked to libc, instead of solving, use clang
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export CC=clang
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# apply patches if needed
#patch -p1 < ../static.patch
#apk add autoconf automake libtool
#autoreconf -fi
# end apply patches
# set up any required curl options here
#LDFLAGS="-static" PKG_CONFIG="pkg-config --static" ./configure --disable-shared --enable-static --disable-libcurl-option --without-brotli --disable-manual --disable-unix-sockets --disable-dict --disable-file --disable-gopher --disable-imap --disable-smtp --disable-rtsp --disable-telnet --disable-tftp --disable-pop3 --without-zlib --disable-threaded-resolver --disable-ipv6 --disable-smb --disable-ntlm-wb --disable-tls-srp --disable-crypto-auth --without-ngtcp2 --without-nghttp2 --disable-ftp --disable-mqtt --disable-alt-svc --without-ssl
LDFLAGS="-static" PKG_CONFIG="pkg-config --static" ./configure --disable-shared --enable-static --disable-ldap --enable-ipv6 --enable-unix-sockets --with-ssl --with-libssh2
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make -j4 V=1 LDFLAGS="-static -all-static"
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# binary is ~13M before stripping, 2.6M after
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strip src/curl
# print out some info about this, size, and to ensure it's actually fully static
ls -lah src/curl
file src/curl
# exit with error code 1 if the executable is dynamic, not static
ldd src/curl && exit 1 || true
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./src/curl -V
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#./src/curl -v http://www.moparisthebest.com/; ./src/curl -v https://www.moparisthebest.com/ip
# we only want to save curl here
mkdir -p /tmp/release/
mv src/curl "/tmp/release/curl-$ARCH"
cd ..
rm -rf "curl-${CURL_VERSION}/"