# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=8

PYTHON_COMPAT=( python3_{8..10} )
inherit autotools flag-o-matic multilib-minimal python-any-r1 toolchain-funcs

DESCRIPTION="International Components for Unicode"
HOMEPAGE="https://icu.unicode.org/"
SRC_URI="https://github.com/unicode-org/icu/releases/download/release-${PV//./-}/icu4c-${PV//./_}-src.tgz"
S="${WORKDIR}/${PN}/source"

LICENSE="BSD"
SLOT="0/${PV}"
KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris ~x86-winnt"
IUSE="debug doc examples static-libs"

BDEPEND="${PYTHON_DEPS}
	virtual/pkgconfig
	doc? ( app-doc/doxygen[dot] )
"

MULTILIB_CHOST_TOOLS=(
	/usr/bin/icu-config
)

PATCHES=(
	"${FILESDIR}/${PN}-65.1-remove-bashisms.patch"
	"${FILESDIR}/${PN}-64.2-darwin.patch"
	"${FILESDIR}/${PN}-68.1-nonunicode.patch"
	# Should be in the next rleease, but check
	# https://bugs.gentoo.org/788112
	"${FILESDIR}/${PN}-69.1-fix-ub-units.patch"
)

src_prepare() {
	default

	# Disable renaming as it is stupid thing to do
	sed -i \
		-e "s/#define U_DISABLE_RENAMING 0/#define U_DISABLE_RENAMING 1/" \
		common/unicode/uconfig.h || die

	# Fix linking of icudata
	sed -i \
		-e "s:LDFLAGSICUDT=-nodefaultlibs -nostdlib:LDFLAGSICUDT=:" \
		config/mh-linux || die

	# Append doxygen configuration to configure
	sed -i \
		-e 's:icudefs.mk:icudefs.mk Doxyfile:' \
		configure.ac || die

	eautoreconf
}

src_configure() {
	append-cxxflags -std=c++14

	if tc-is-cross-compiler; then
		mkdir "${WORKDIR}"/host || die
		pushd "${WORKDIR}"/host >/dev/null || die

		CFLAGS="" CXXFLAGS="" ASFLAGS="" LDFLAGS="" \
		CC="$(tc-getBUILD_CC)" CXX="$(tc-getBUILD_CXX)" AR="$(tc-getBUILD_AR)" \
		RANLIB="$(tc-getBUILD_RANLIB)" LD="$(tc-getBUILD_LD)" \
		"${S}"/configure --disable-renaming --disable-debug \
			--disable-samples --enable-static || die
		emake

		popd >/dev/null || die
	fi

	multilib-minimal_src_configure
}

multilib_src_configure() {
	local myeconfargs=(
		--disable-renaming
		--disable-samples
		--disable-layoutex
		$(use_enable debug)
		$(use_enable static-libs static)
		$(multilib_native_use_enable examples samples)
	)

	tc-is-cross-compiler && myeconfargs+=(
		--with-cross-build="${WORKDIR}"/host
	)

	# work around cross-endian testing failures with LTO #757681
	if tc-is-cross-compiler && is-flagq '-flto*' ; then
		myeconfargs+=( --disable-strict )
	fi

	# icu tries to use clang by default
	tc-export CC CXX

	# make sure we configure with the same shell as we run icu-config
	# with, or ECHO_N, ECHO_T and ECHO_C will be wrongly defined
	export CONFIG_SHELL="${EPREFIX}/bin/sh"
	# probably have no /bin/sh in prefix-chain
	[[ -x ${CONFIG_SHELL} ]] || CONFIG_SHELL="${BASH}"

	ECONF_SOURCE="${S}" econf "${myeconfargs[@]}"
}

multilib_src_compile() {
	default

	if multilib_is_native_abi && use doc; then
		doxygen -u Doxyfile || die
		doxygen Doxyfile || die
	fi
}

multilib_src_test() {
	# INTLTEST_OPTS: intltest options
	#   -e: Exhaustive testing
	#   -l: Reporting of memory leaks
	#   -v: Increased verbosity
	# IOTEST_OPTS: iotest options
	#   -e: Exhaustive testing
	#   -v: Increased verbosity
	# CINTLTST_OPTS: cintltst options
	#   -e: Exhaustive testing
	#   -v: Increased verbosity
	emake -j1 VERBOSE="1" check
}

multilib_src_install() {
	default

	if multilib_is_native_abi && use doc; then
		docinto html
		dodoc -r doc/html/*
	fi
}

multilib_src_install_all() {
	local HTML_DOCS=( ../readme.html )
	einstalldocs
}