gnustep-base/gnustep-make: better message on missing objc support

Also update for EAPI6
Bug #561728 by Toralf Förster <[email protected]>

Package-Manager: portage-2.2.27

gnustep-base/gnustep-make/gnustep-make-2.6.7-r1.ebuild

@@ -0,0 +1,142 @@
+# Copyright 1999-2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI=6
+inherit gnustep-base eutils prefix toolchain-funcs
+
+DESCRIPTION="GNUstep Makefile Package"
+HOMEPAGE="http://www.gnustep.org"
+SRC_URI="ftp://ftp.gnustep.org/pub/gnustep/core/${P}.tar.gz"
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~ppc ~ppc64 ~sparc ~x86 ~x86-fbsd ~amd64-linux ~x86-linux ~sparc-solaris ~x86-solaris"
+IUSE="libobjc2 native-exceptions"
+
+DEPEND="${GNUSTEP_CORE_DEPEND}
+	>=sys-devel/make-3.75
+	libobjc2? ( gnustep-base/libobjc2
+		sys-devel/clang )
+	!libobjc2? ( !!gnustep-base/libobjc2
+		|| (
+			>=sys-devel/gcc-3.3:=[objc]
+			sys-devel/clang
+		) )"
+RDEPEND="${DEPEND}"
+
+pkg_setup() {
+	# Determine libobjc.so to use
+	if use libobjc2; then
+		libobjc_version=libobjc.so.4
+	else
+		# Find version in active gcc
+		for ver in {2..5};
+		do
+			if $(tc-getCC) -Werror -Wl,-l:libobjc.so.${ver} \
+				"${FILESDIR}"/testlibobjc.m -o /dev/null 2> /dev/null;
+			then
+				libobjc_version=libobjc.so.${ver}
+			fi
+		done
+	fi
+
+	# Stop if we could not get libobjc.so
+	if [[ -z ${libobjc_version} ]]; then
+		eerror "${P} requires a working Objective-C runtime and a compiler with"
+		eerror "Objective-C support. Your current settings lack these requirements"
+		if ! use libobjc2;
+		then
+			eerror "Please switch your active compiler to gcc with USE=objc, or clang"
+		fi
+		die "Could not find Objective-C runtime"
+	fi
+
+	# For existing installations, determine if we will use another libobjc.so
+	if has_version gnustep-base/gnustep-make; then
+		local current_libobjc="$(awk -F: '/^OBJC_LIB_FLAG/ {print $2}' ${EPREFIX}/usr/share/GNUstep/Makefiles/config.make)"
+		# Old installations did not set this explicitely
+		: ${current_libobjc:=libobjc.so.2}
+
+		if [[ ${current_libobjc} != ${libobjc_version} ]]; then
+			ewarn "Warning: changed libobjc.so version!!"
+			ewarn "The libobjc.so version used for gnustep-make has changed"
+			ewarn "(either by the libojbc2 use-flag or a GCC upgrade)"
+			ewarn "You must rebuild all gnustep packages installed."
+			ewarn ""
+			ewarn "To do so, please emerge gnustep-base/gnustep-updater and run:"
+			ewarn "# gnustep-updater -l"
+		fi
+	fi
+
+	if use libobjc2; then
+		export CC=clang
+	fi
+}
+
+src_prepare() {
+	# Multilib-strict
+	sed -e "s#/lib#/$(get_libdir)#" -i FilesystemLayouts/fhs-system || die "sed failed"
+	cp "${FILESDIR}"/gnustep-5.{csh,sh} "${T}"/
+	eprefixify "${T}"/gnustep-5.{csh,sh}
+
+	default
+}
+
+src_configure() {
+	#--enable-objc-nonfragile-abi: only working in clang for now
+	econf \
+		INSTALL="${EPREFIX}"/usr/bin/install \
+		--with-layout=fhs-system \
+		--with-config-file="${EPREFIX}"/etc/GNUstep/GNUstep.conf \
+		--with-objc-lib-flag=-l:${libobjc_version} \
+		$(use_enable libobjc2 objc-nonfragile-abi) \
+		$(use_enable native-exceptions native-objc-exceptions)
+}
+
+src_compile() {
+	emake
+	# Prepare doc here (needed when no gnustep-make is already installed)
+	if use doc ; then
+		# If a gnustep-1 environment is set
+		unset GNUSTEP_MAKEFILES
+		pushd Documentation &> /dev/null
+		emake -j1 all install
+		popd &> /dev/null
+	fi
+}
+
+src_install() {
+	# Get GNUSTEP_* variables
+	. ./GNUstep.conf
+
+	local make_eval
+	use debug || make_eval="${make_eval} debug=no"
+	make_eval="${make_eval} verbose=yes"
+
+	emake ${make_eval} DESTDIR="${D}" install
+
+	# Copy the documentation
+	if use doc ; then
+		dodir ${GNUSTEP_SYSTEM_DOC}
+		cp -r Documentation/tmp-installation/System/Library/Documentation/* \
+			"${ED}"${GNUSTEP_SYSTEM_DOC=}
+	fi
+
+	dodoc FAQ README RELEASENOTES
+
+	exeinto /etc/profile.d
+	doexe "${T}"/gnustep-?.sh
+	doexe "${T}"/gnustep-?.csh
+}
+
+pkg_postinst() {
+	# Warn about new layout if old GNUstep directory is still here
+	if [ -e /usr/GNUstep/System ]; then
+		ewarn "Old layout directory detected (/usr/GNUstep/System)"
+		ewarn "Gentoo has switched to FHS layout for GNUstep packages"
+		ewarn "You must first update the configuration files from this package,"
+		ewarn "then remerge all packages still installed with the old layout"
+		ewarn "You can use gnustep-base/gnustep-updater for this task"
+	fi
+}