# Copyright 1999-2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

EAPI=5

inherit flag-o-matic toolchain-funcs

DESCRIPTION="C++ class library of cryptographic schemes"
HOMEPAGE="http://cryptopp.com"
SRC_URI="https://www.cryptopp.com/cryptopp${PV//.}.zip"

LICENSE="Boost-1.0"
SLOT="0/5.6" # subslot is so version
KEYWORDS="*"
IUSE="static-libs"

DEPEND="app-arch/unzip"

S="${WORKDIR}"

PATCHES=(
	"${FILESDIR}/${PN}-5.6.4-nonative.patch"
	"${FILESDIR}/${P}-CVE-2017-9434.patch"
)

pkg_setup() {
	export CXX="$(tc-getCXX)"
	export LIBDIR="${EPREFIX}/usr/$(get_libdir)"
	export PREFIX="${EPREFIX}/usr"
}

src_prepare() {
	epatch "${PATCHES[@]}"
}

src_compile() {
	# higher optimizations cause problems
	replace-flags -O3 -O2
	# ASM isn't Darwin/Mach-O ready, #479554, buildsys doesn't grok CPPFLAGS
	[[ ${CHOST} == *-darwin* ]] && append-cxxflags -DCRYPTOPP_DISABLE_ASM

	emake -f GNUmakefile all shared
}

src_install() {
	default

	# remove leftovers as build system sucks
	rm -fr "${ED}"/usr/bin "${ED}"/usr/share/cryptopp
	use static-libs || rm -f "${ED}${EPREFIX}"/usr/$(get_libdir)/*.a

	# compatibility
	dosym cryptopp "${EPREFIX}"/usr/include/crypto++
	for f in "${ED}${EPREFIX}"/usr/$(get_libdir)/*; do
		ln -s "$(basename "${f}")" "$(echo "${f}" | sed 's/cryptopp/crypto++/')" || die
	done
}

pkg_preinst() {
	# we switched directory to symlink
	# make sure portage digests that
	rm -fr "${EROOT}/usr/include/crypto++"
	rm -fr "${EROOT}/usr/include/cryptopp"
}