[scripts] patch-specs.sh: fallback to ext-toolchain.sh --wrap if spec file patching is not possible (gcc < 4.3.0)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29945 3c298f89-4303-0410-b956-a3cf2f4a3e73

scripts/patch-specs.sh

@@ -1,7 +1,6 @@
 #!/usr/bin/env bash
 
 DIR="$1"
-FOUND=0
 
 if [ -d "$DIR" ]; then
 	DIR="$(cd "$DIR"; pwd)"
@@ -26,12 +25,15 @@ if [ ! -x "$CPP" ]; then
 	exit 1
 fi
 
-for lib in $(STAGING_DIR="$dir" "$CPP" -x c -v /dev/null 2>&1 | sed -ne 's#:# #g; s#^LIBRARY_PATH=##p'); do
+patch_specs() {
+	local found=0
+
+	for lib in $(STAGING_DIR="$DIR" "$CPP" -x c -v /dev/null 2>&1 | sed -ne 's#:# #g; s#^LIBRARY_PATH=##p'); do
 		if [ -d "$lib" ]; then
 			grep -qs "STAGING_DIR" "$lib/specs" && rm -f "$lib/specs"
-		if [ $FOUND -lt 1 ]; then
+			if [ $found -lt 1 ]; then
 				echo -n "Patching specs ... "
-			STAGING_DIR="$dir" "$CPP" -dumpspecs | awk '
+				STAGING_DIR="$DIR" "$CPP" -dumpspecs | awk '
 					mode ~ "link" {
 						sub("%{L.}", "%{L*} -L %:getenv(STAGING_DIR /usr/lib) -rpath-link %:getenv(STAGING_DIR /usr/lib)")
 					}
@@ -50,15 +52,39 @@ for lib in $(STAGING_DIR="$dir" "$CPP" -x c -v /dev/null 2>&1 | sed -ne 's#:# #g
 					}
 				' > "$lib/specs"
 				echo "ok"
-			FOUND=1
+				found=1
 			fi
 		fi
 	done
 
-if [ $FOUND -lt 1 ]; then
-	echo "Failed to locate library directory!"
-	exit 1
+	[ $found -gt 0 ]
+	return $?
+}
+
+
+VERSION="$(STAGING_DIR="$DIR" "$CPP" --version | head -n1)"
+VERSION="${VERSION:-unknown}"
+
+case "${VERSION##* }" in
+	2.*|3.*|4.0.*|4.1.*|4.2.*)
+		echo "The compiler version does not support getenv() in spec files."
+		echo -n "Wrapping binaries instead ... "
+
+		if "${0%/*}/ext-toolchain.sh" --toolchain "$DIR" --wrap "${CPP%/*}"; then
+			echo "ok"
+			exit 0
 		else
+			echo "failed"
+			exit $?
+		fi
+	;;
+	*)
+		if patch_specs; then
 			echo "Toolchain successfully patched."
 			exit 0
+		else
+			echo "Failed to locate library directory!"
+			exit 1
 		fi
+	;;
+esac