plan9port: respect LDFLAGS.

srcpkgs/plan9port/template

@@ -1,7 +1,7 @@
 # Template file for 'plan9port'
 pkgname=plan9port
 version=20160418
-revision=2
+revision=3
 _githash=35d43924484b88b9816e40d2f6bff4547f3eec47
 wrksrc="${pkgname}-${_githash}"
 hostmakedepends="which perl"
@@ -14,6 +14,16 @@ distfiles="https://github.com/9fans/plan9port/archive/${_githash}.tar.gz"
 checksum=21b0d8ccb79975e49cb16a809c51557e5fe1659061591d1098544e0c5dea1d38
 nocross=yes
 
+post_extract() {
+	# add missing LDFLAGS for some rules
+	sed -i '/prereq$/s/$/ $LDFLAGS/' \
+		src/cmd/auth/factotum/mkfile \
+		src/cmd/auth/secstore/mkfile \
+		src/cmd/devdraw/mkfile \
+		src/cmd/faces/mkfile \
+		src/cmd/mkfile
+	sed -i 's/-lX11$/& $LDFLAGS/g' src/cmd/rio/mkfile
+}
 do_build() {
 	CFLAGS+=' -D_DEFAULT_SOURCE'
 	echo "CFLAGS='$CFLAGS'" >LOCAL.config