vecx_libretro: a GCE Vectrex emulator for libretro (#2711)

games-emulation/vecx_libretro/vecx_libretro-1.2_20180412.recipe

@@ -0,0 +1,54 @@
+SUMMARY="A port of Vecx, a GCE Vectrex emulator to the libretro API"
+DESCRIPTION="Vecx is a GCE Vectrex emulator, a vector display-based home video \
+game console that was developed by Western Technologies/Smith Engineering. It \
+had an integrated vector monitor, was monochrome and used plastic screen \
+overlays (also emulated by Vecx) to simulate color and various static graphics \
+and decorations. This is the libretro port of Vecx."
+HOMEPAGE="https://www.valavan.net/vectrex.html"
+COPYRIGHT="2002-2018 Valavan Manohararajah, John Hawthorn, the libretro team"
+LICENSE="GNU GPL v3"
+REVISION="1"
+srcGitRev="25bfdd94900dcf5fd3d555ef686d857c0f087c2f"
+SOURCE_URI="https://github.com/libretro/libretro-vecx/archive/$srcGitRev.tar.gz"
+CHECKSUM_SHA256="c13b6fd79b660db25f02d0e9f9a4d47804bf674560498161c13d8d58a8a60f61"
+SOURCE_FILENAME="libretro-vecx-${portVersion/_/-}-$srcGitRev.tar.gz"
+SOURCE_DIR="libretro-vecx-$srcGitRev"
+ADDITIONAL_FILES="vecx_libretro.info.in"
+
+ARCHITECTURES="!x86_gcc2 ?x86 x86_64"
+SECONDARY_ARCHITECTURES="x86"
+
+PROVIDES="
+	vecx_libretro$secondaryArchSuffix = $portVersion
+	addon:vecx_libretro$secondaryArchSuffix = $portVersion
+	"
+REQUIRES="
+	haiku$secondaryArchSuffix
+	retroarch$secondaryArchSuffix
+	"
+
+BUILD_REQUIRES="
+	haiku${secondaryArchSuffix}_devel
+	"
+BUILD_PREREQUIRES="
+	cmd:gcc$secondaryArchSuffix
+	cmd:make
+	"
+
+BUILD()
+{
+	sed -e "s/@DISPLAY_VERSION@/v${portVersion/_/-}/" \
+		$portDir/additional-files/vecx_libretro.info.in \
+		> vecx_libretro.info
+	make -f Makefile.libretro $jobArgs
+}
+
+INSTALL()
+{
+	install -m 0755 -d "$docDir"
+	install -m 0644 -t "$docDir" LICENSE.md README.md
+	install -m 0755 -d "$addOnsDir"/libretro
+	install -m 0644 -t "$addOnsDir"/libretro \
+		vecx_libretro.info \
+		vecx_libretro.so
+}