A script to build a dynamic Nginx module with the correct configure options.

build-nginx-module.sh

#!/bin/sh

# A script to build a dynamic Nginx module with the correct configure options.

set -eu
set -o pipefail 2>/dev/null || :

dir="$1"

if [ ! "$dir" ]; then
	echo "usage: $0 module_dir" >&2
	exit 1
fi

getconfopts() {
	nginx -V 2>&1 |
	sed -nE "s/^configure arguments: //; s/ (--[^' ]+('[^']*')?)/\n\1/pg;"
}

dist=`nginx -v 2>&1 | cut -d' ' -f3 | tr / -`
opts=`getconfopts | grep -- --with-compat || getconfopts`
name=`sed -n 's/^ngx_addon_name=//p' "$dir/config"`

keep=
if [ -d "$dist" ]; then
	keep=1
else
	curl "https://nginx.org/download/$dist.tar.gz" | tar -xz
fi

cd "$dir"
dir=`pwd`
cd -

cd "$dist"
echo "$opts" | xargs ./configure --add-dynamic-module="$dir"
make modules
cd -

cp "$dist/objs/$name.so" .

if [ ! "$keep" ]; then
	rm -rf "$dist"
fi