dev-util/mingw64-runtime: switch to --prefix=/usr (from --prefix=/)

A couple of changes:
- Allow dev-util/mingw64-runtime[headers-only] for cross-building case.
  One day crossdew won't need cross-${CTARGET}/mingw64-runtime packages
  and will be able to use dev-util/mingw64-runtime directly.
  This change is a step in that direction.
- Awitch to --prefix=/usr (from --prefix=/). This allow cross-building
  dev-util/mingw64-runtime itself and installing libraries into /usr/lib
  (instead of /lib).

Tested as:
- generated working toolchain:
  $ crossdev -t x86_64-w64-mingw32
- cross-built mingw64-runtime successfully:
  $ x86_64-w64-mingw32-emerge -v1 dev-util/mingw64-runtime

Package-Manager: Portage-2.3.24, Repoman-2.3.6

1 files changed, 117 insertions, 0 deletions

diff --git a/dev-util/mingw64-runtime/mingw64-runtime-5.0.3-r2.ebuild b/dev-util/mingw64-runtime/mingw64-runtime-5.0.3-r2.ebuild
new file mode 100644
index 000000000000..e52536087f3e
--- /dev/null
+++ b/dev-util/mingw64-runtime/mingw64-runtime-5.0.3-r2.ebuild
@@ -0,0 +1,117 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+export CBUILD=${CBUILD:-${CHOST}}
+export CTARGET=${CTARGET:-${CHOST}}
+if [[ ${CTARGET} == ${CHOST} ]] ; then
+	if [[ ${CATEGORY} == cross-* ]] ; then
+		export CTARGET=${CATEGORY#cross-}
+	fi
+fi
+
+WANT_AUTOMAKE="1.15"
+
+inherit autotools flag-o-matic eutils
+
+DESCRIPTION="Free Win64 runtime and import library definitions"
+HOMEPAGE="http://mingw-w64.sourceforge.net/"
+SRC_URI="mirror://sourceforge/mingw-w64/mingw-w64/mingw-w64-release/mingw-w64-v${PV}.tar.bz2"
+
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="headers-only idl libraries tools"
+RESTRICT="strip"
+
+S="${WORKDIR}/mingw-w64-v${PV}"
+
+PATCHES=(
+	"${FILESDIR}/${P}-build.patch"
+)
+
+is_crosscompile() {
+	[[ ${CHOST} != ${CTARGET} ]]
+}
+just_headers() {
+	use headers-only
+}
+alt_prefix() {
+	is_crosscompile && echo /usr/${CTARGET}
+}
+crt_with() {
+	just_headers && echo --without-$1 || echo --with-$1
+}
+crt_use_enable() {
+	just_headers && echo --without-$2 || use_enable "$@"
+}
+crt_use_with() {
+	just_headers && echo --without-$2 || use_with "$@"
+}
+
+pkg_setup() {
+	if [[ ${CBUILD} == ${CHOST} ]] && [[ ${CHOST} == ${CTARGET} ]] ; then
+		die "Invalid configuration"
+	fi
+}
+
+src_prepare() {
+	default
+	eautoreconf
+}
+
+src_configure() {
+	CHOST=${CTARGET} strip-unsupported-flags
+
+	if ! just_headers; then
+		mkdir "${WORKDIR}/headers"
+		pushd "${WORKDIR}/headers" > /dev/null
+		CHOST=${CTARGET} "${S}/configure" \
+			--prefix="${T}/tmproot" \
+			--with-headers \
+			--without-crt \
+			|| die
+		popd > /dev/null
+		append-cppflags "-I${T}/tmproot/include"
+	fi
+
+	# By default configure tries to set --sysroot=${prefix}. We disable
+	# this behaviour with --with-sysroot=no to use gcc's sysroot default.
+	# That way we can cross-build mingw64-runtime with cross-emerge.
+	CHOST=${CTARGET} econf \
+		--with-sysroot=no \
+		--prefix="${EPREFIX}"$(alt_prefix)/usr \
+		--with-headers \
+		--enable-sdk \
+		$(crt_with crt) \
+		$(crt_use_enable idl idl) \
+		$(crt_use_with libraries libraries) \
+		$(crt_use_with tools tools) \
+		$(
+			$(tc-getCPP ${CTARGET}) ${CPPFLAGS} -dM - < /dev/null | grep -q __MINGW64__ \
+				&& echo --disable-lib32 --enable-lib64 \
+				|| echo --enable-lib32 --disable-lib64
+		)
+}
+
+src_compile() {
+	if ! just_headers; then
+		emake -C "${WORKDIR}/headers" install
+	fi
+	default
+}
+
+src_install() {
+	default
+
+	if is_crosscompile ; then
+		# gcc is configured to look at specific hard-coded paths for mingw #419601
+		dosym usr /usr/${CTARGET}/mingw
+		dosym usr /usr/${CTARGET}/${CTARGET}
+		dosym usr/include /usr/${CTARGET}/sys-include
+	fi
+
+	env -uRESTRICT CHOST=${CTARGET} prepallstrip
+	rm -rf "${ED}/usr/share"
+}