Makefile.boost

# Build boost
BASE=${PWD}

BOOST_VERSION=1_89_0
BOOST_URL=https://archives.boost.io/release/1.89.0/source/boost_1_89_0.tar.gz
BOOST_SHA256=9de758db755e8330a01d995b0a24d09798048400ac25c03fc5ea9be364b13c93

boost: build/boost_${BOOST_VERSION}.tar.gz \
	build/boost_${BOOST_VERSION} \
	build-dep/boost/include

build/boost_${BOOST_VERSION}.tar.gz:
	cd build && \
		wget "${BOOST_URL}"

build/boost_${BOOST_VERSION}:
	cd build && \
	echo '${BOOST_SHA256}  boost_${BOOST_VERSION}.tar.gz' | sha256sum -c && \
		tar xf boost_${BOOST_VERSION}.tar.gz

# Install Boost with its installer. This also creates the CMake config files, which are needed because newer
# versions of CMake no longer ship their own FindBoost module.
# Boost.System isn't actually needed. Boost.System is installed here, because Boost doesn't have an option to
# only install the header-only libraries.
build-dep/boost/include:
	mkdir -p "${BASE}/build-dep/boost" && \
	cd "build/boost_${BOOST_VERSION}" && \
	./bootstrap.sh --prefix="${BASE}/build-dep/boost" --with-libraries=system && \
	./b2 install

clean:
	rm -rf build-dep/boost
	rm -rf build/boost_*