abuild: fix check for arch specific binaries

we now fail if noarch is set wrong

abuild.in

@@ -483,10 +483,38 @@ prepare_tracedeps() {
 	done
 }
 
+# check if dir has arch specific binaries
+dir_has_arch_binaries() {
+	local dir="$1"
+	# if scanelf returns something, then we have binaries
+	[ -n "$(scanelf -R "$dir" | head -n 1)" ] && return 0
+
+	# look for static *.a
+	[ -n "$(find "$dir" -type f -name '*.a' | head -n 1)" ] && return 0
+
+	return 1
+}
+
+# check that noarch is set if needed
+archcheck() {
+	options_has "!archcheck" && return 0
+	if dir_has_arch_binaries "${subpkgdir:-$pkgdir}"; then
+		[ "$arch" != "noarch" ] && return 0
+		error "Arch specific binaries found so arch must not be set to \"noarch\""
+		return 1
+	else
+		[ "$arch" = "noarch" ] && return 0
+		error "No arch specific binaries found so arch should be set to \"noarch\""
+		return 1
+	fi
+	return 0
+}
+
 prepare_package() {
 	msg "Preparing ${subpkgname:+sub}package ${subpkgname:-$pkgname}..."
 	stripbin
-	prepare_metafiles && prepare_tracedeps
+	prepare_metafiles && prepare_tracedeps || return 1
+	archcheck	
 }
 
 pkginfo_val() {
@@ -576,21 +604,6 @@ trace_apk_deps() {
 	done
 }
 
-# check that noarch is set if needed
-arch_check() {
-	local name=$1
-	local dir="$2"
-	if [ -z "$(scanelf -R "$dir" | head -n 1)" ]; then
-		[ "$arch" = "noarch" ] && return 0
-		warning "No elf files found for $name so arch should probably be set to \"noarch\""
-	else
-		[ "$arch" != "noarch" ] && return 0
-		error "Elf files found so arch must not be set to \"noarch\""
-		return 1
-	fi
-	return 0
-}
-
 create_apks() {
 	local file
 	getpkgver || return 1
@@ -601,7 +614,6 @@ create_apks() {
 		local apk=$name-$ver.apk
 		local datadir="$pkgbasedir"/$name
 
-		arch_check "$name" "$datadir" || return 1
 		trace_apk_deps "$name" "$dir" || return 1
 		msg "Creating $apk..."
 		(
@@ -1007,7 +1019,9 @@ checksum() {
 
 stripbin() {
 	local bin
-	options_has "!strip" && return 0
+	if options_has "!strip" || [ "$arch" = "noarch" ]; then
+		return 0
+	fi
 	cd "${subpkgdir:-$pkgdir}" || return 1
 	msg "Stripping binaries"
 	scanelf --recursive --nobanner --etype "ET_DYN,ET_EXEC" . \