Build latest cURL with BoringSSL / http2 (nghttp2) / zlib

build-curl.sh

#All of commands are run from root. If you're using non-root user you might need to add "sudo" before some commands

#Install required Ubuntu packages
apt update
apt install git cmake build-essential golang wget autoconf libtool 

#Let's build everything in /tmp folder
cd /tmp

#Build BoringSSL
git clone --depth=1 https://boringssl.googlesource.com/boringssl
cd boringssl
mkdir build
cd build
cmake -DCMAKE_POSITION_INDEPENDENT_CODE=on ..
make

#set up the build tree to get detected by curl's configure
cd ..
mkdir lib
cd lib
ln -s ../build/ssl/libssl.a
ln -s ../build/crypto/libcrypto.a

#install nghttp2
cd /tmp
git clone --depth=1 https://github.com/tatsuhiro-t/nghttp2.git
cd nghttp2
autoreconf -i
automake
autoconf
./configure
make
sudo make install

#build zlib (you can get the latest version at https://zlib.net/)
cd /tmp
wget https://zlib.net/zlib-1.2.11.tar.gz
tar -xf zlib-1.2.11.tar.gz
./configure --prefix=/usr/local/zlib
make install

#build curl (you can get the latest version at https://curl.se/download/)
cd /tmp
wget https://curl.se/download/curl-7.81.0.tar.gz
tar -xf https://curl.se/download/curl-7.81.0.tar.gz
cd curl-7.81.0
./buildconf
LIBS=-lpthread ./configure --with-nghttp2=/usr/local --with-ssl=/tmp/boring2 --with-zlib=/usr/local/zlib
make
make install
ldconfig