dgen-sdl: fix build

srcpkgs/dgen-sdl/template

@@ -3,7 +3,7 @@ pkgname=dgen-sdl
 version=1.33
 revision=3
 build_style=gnu-configure
-hostmakedepends="pkg-config nasm"
+hostmakedepends="automake libtool pkg-config nasm"
 makedepends="SDL-devel libarchive-devel"
 short_desc="Multi-platform Genesis/Mega Drive Emulator"
 maintainer="Juan RP <xtraeme@voidlinux.eu>"
@@ -12,6 +12,11 @@ homepage="http://dgen.sourceforge.net"
 distfiles="${SOURCEFORGE_SITE}/dgen/${pkgname}-${version}.tar.gz"
 checksum=99e2c06017c22873c77f88186ebcc09867244eb6e042c763bb094b02b8def61e
 
+pre_configure() {
+	sed -i Makefile.asm.am -e 's;-o $@ -- $<;-o $@ $^;'
+	NOCONFIGURE=1 autoreconf -fi
+}
+
 post_install() {
 	vlicense COPYING
 }