app-emulation/dosemu: unbreak misaligned .sys files, bug #631190

In bug #618366 I've added -no-pie LDFLAGS propagation to 16-bit targets
but did not notice dosemu has different varying base addresses for
different .com files (and I've overlooked 0-based .sys rules).

Specifying wrong base address caused incorrect jump offsets
into the final binary. That caused crash and hangup of cdrom.sys
driver.

This change restores original base addresses.

Reported-by: Tom
Reported-by: Robert Gill
Bug: https://bugs.gentoo.org/631190
Package-Manager: Portage-2.3.13, Repoman-2.3.4
RepoMan-Options: --force

1 files changed, 103 insertions, 0 deletions

diff --git a/app-emulation/dosemu/dosemu-1.4.1_pre20130107-r5.ebuild b/app-emulation/dosemu/dosemu-1.4.1_pre20130107-r5.ebuild
new file mode 100644
index 000000000000..8b5fcdc0a693
--- /dev/null
+++ b/app-emulation/dosemu/dosemu-1.4.1_pre20130107-r5.ebuild
@@ -0,0 +1,103 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+inherit autotools eutils flag-o-matic pax-utils toolchain-funcs
+
+P_FD="dosemu-freedos-1.0-bin"
+COMMIT="15cfb41ff20a052769d753c3262c57ecb050ad71"
+
+DESCRIPTION="DOS Emulator"
+HOMEPAGE="http://www.dosemu.org/"
+SRC_URI="mirror://sourceforge/dosemu/${P_FD}.tgz
+	https://sourceforge.net/code-snapshots/git/d/do/dosemu/code.git/dosemu-code-${COMMIT}.zip -> ${P}.zip"
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="-* amd64 x86"
+IUSE="X svga gpm debug alsa sndfile fluidsynth"
+
+RDEPEND="X? ( x11-libs/libX11
+		x11-libs/libXxf86vm
+		x11-libs/libXau
+		x11-libs/libXext
+		x11-libs/libXdmcp
+		x11-apps/xset
+		x11-apps/xlsfonts
+		x11-apps/bdftopcf
+		x11-apps/mkfontdir )
+	svga? ( media-libs/svgalib )
+	gpm? ( sys-libs/gpm )
+	alsa? ( media-libs/alsa-lib )
+	sndfile? ( media-libs/libsndfile )
+	fluidsynth? ( media-sound/fluidsynth
+		media-sound/fluid-soundfont )
+	media-libs/libsdl
+	>=sys-libs/slang-1.4"
+
+DEPEND="${RDEPEND}
+	X? ( x11-proto/xf86dgaproto )
+	>=sys-devel/autoconf-2.57"
+
+S="${WORKDIR}/${PN}-code-${COMMIT}"
+
+PATCHES=(
+	"${FILESDIR}"/${P}-fortify.patch
+	"${FILESDIR}"/${PN}-1.4.1_pre20091009-dash.patch
+	"${FILESDIR}"/${P}-no-glibc.patch
+	"${FILESDIR}"/${P}-flex-2.6.3.patch
+	"${FILESDIR}"/${P}-ia16-ldflags.patch
+	"${FILESDIR}"/${P}-fix-inline.patch
+)
+
+src_prepare() {
+	default
+
+	# Has problems with -O3 on some systems
+	replace-flags -O[3-9] -O2
+
+	# This one is from media-sound/fluid-soundfont (bug #479534)
+	sed "s,/usr/share/soundfonts/default.sf2,${EPREFIX}/usr/share/sounds/sf2/FluidR3_GM.sf2,"\
+		-i src/plugin/fluidsynth/mid_o_flus.c || die
+
+	eautoreconf
+}
+
+src_configure() {
+	# workaround binutils ld.gold bug #618366
+	local nopie_flag=
+	if tc-enables-pie; then
+		if gcc-specs-pie; then
+			# before gcc got upstream support for '-no-pie'
+			nopie_flag=-nopie
+		else
+			nopie_flag=-no-pie
+		fi
+	fi
+
+	econf $(use_with X x) \
+		$(use_with svga svgalib) \
+		$(use_enable debug) \
+		$(use_with gpm) \
+		$(use_with alsa) \
+		$(use_with sndfile) \
+		$(use_with fluidsynth) \
+		--with-fdtarball="${DISTDIR}"/${P_FD}.tgz \
+		--sysconfdir="${EPREFIX}"/etc/dosemu/ \
+		--with-docdir="${EPREFIX}"/usr/share/doc/${PF} \
+		IA16_LDFLAGS_EXTRA=${nopie_flag}
+}
+
+src_compile() {
+	emake AR=$(tc-getAR)
+}
+
+src_install() {
+	default
+
+	# r - randmmap: dosemu tries to get address mapping
+	#     exactly where asked, loops otherwise.
+	# m - allow RWX mapping: as it's an emulator / code loader
+	pax-mark -mr "${ED}/usr/bin/dosemu.bin"
+}