build.sh

#!/bin/bash
# Made by necrophcodr 2014 ( http://necrophcodr.me/ )

PWD="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

check_jq() {
	if [[ $(which jq 2>/dev/null; echo $?) -ne 0 ]]; then
		printf "jq utility not in path..."
		if [[ -x "deps/jq-jq-1.4/jq" ]]; then
			printf "found deps/jq-jq-1.4/jq!\n";
			PATH="$PWD/deps/jq-jq-1.4:$PATH"
			return
		fi
		( mkdir -p deps &&
			cd deps &&
			wget -c https://github.com/stedolan/jq/archive/jq-1.4.tar.gz -O \
			jq-1.4.tar.gz &&
			tar xf jq-1.4.tar.gz &&
			rm jq-1.4.tar.gz
			cd jq-jq-1.4 &&
			autoreconf -i &&
			./configure &&
			make &&
			make check ) && ( cd $PWD && ./$0 $@ )
		exit
	fi
}

try_fetch() {
	dep_type="$1"
	dep_url="$2"
	dep_file="$3"
	cd deps
	[[ -e "$dep_file" ]] && return
	echo "Using $dep_type to fetch $dep_url -> $dep_file"
	case "$dep_type" in
		wget)
			wget -c $dep_url
			local err
			tar xf $dep_file
			err=$?
			if [[ $err -eq 0 ]]; then
				rm -f $dep_file
			fi
			return $?
			;;
		git)
			git clone $dep_url $dep_file
			return $?
			;;
		hg)
			hg clone $dep_url $dep_file
			return $?
			;;
		fossil)
			mkdir -p $dep_file
			fossil clone $dep_url $dep_file/.repo.fossil
			( cd $dep_file && fossil open --nested .repo.fossil )
			return $?
			;;
		*)
			echo "no idea how to fetch using \"$dep_type\".. :("
			return 1
			;;
	esac
}

try_configure() {
	dep_dir="$1"
	cd $dep_dir
	[[ -f "Makefile" ]] && return
	if [[ -f "configure" ]]; then
		PREFIX=$(pwd) ./configure && return
	fi
	if [[ -f "configure.ac" ]]; then
		autoreconf -i && try_configure $dep_dir && return
	fi
}

try_build() {
	dep_dir="$1"
	cd $dep_dir
	if [[ -f "Makefile" ]]; then
		make install && return
	fi
}

check_jq

cat spm.json | jq '.depends | keys[]' | sed 's|"||g' | while read dep; do
	dep_type=$(cat spm.json | jq -c '.depends["'$dep'"][0]' | sed 's|"||g')
	if [[ "$dep_type" == "null" ]]; then
		dep_type="wget"
	fi
	dep_url=$(cat spm.json | jq -c '.depends["'$dep'"][1]' | sed 's|"||g')
	( ( try_fetch $dep_type $dep_url $dep ) && ( try_configure deps/$dep ) && \
	( try_build deps/$dep ) )
	[[ $? -ne 0 ]] && exit 1
done

./configure
[[ -d ".tup" ]] || tup init
tup upd

spm.json

{
	"name":"some project",
	"depends":{
		"libmicrohttpd-0.9.38":[null, "http://ftp.gnu.org/gnu/libmicrohttpd/libmicrohttpd-0.9.38.tar.gz"]
	}
}