gcc: fixed cross build by explicitely setting the path to find build prerequisites only at toolchain stage

Note:

This reverts the changes done by following commit:
-----------------------------------------------------------------------------
commit 041df7170f
Author:     Christian Wiese <[email protected]>
AuthorDate: Mon Aug 6 23:56:15 2012 +0200
Commit:     Christian Wiese <[email protected]>
CommitDate: Tue Oct 23 00:25:40 2012 +0200

    gcc: changed to set locations of build prerequisites in all stages instead of toolchain stage only
-----------------------------------------------------------------------------

which badly broke the cross-build of gcc when using uclibc!

base/gcc/gcc.conf

@@ -136,7 +136,20 @@ if [ "$SDECFG_LIBC" = 'glibc' ]; then
 fi
 
 
-# build prerequisites
+if atstage toolchain; then
+	bindir="/$prefix/crosscc"
+
+	var_append confopt " " "--with-sysroot=$sysroot"
+
+	var_append confopt " " "--program-prefix=${arch_target}-"
+	var_append confopt " " "--disable-cpp"
+	var_append confopt " " "--disable-shared"
+	var_append confopt " " "--disable-libssp"
+	var_append confopt " " "--disable-libgomp"
+	var_append confopt " " "--disable-libquadmath"
+	var_append confopt " " "--disable-libitm"
+
+	# use the native libraries we build in the toolchain directory
 	var_append extraconfopt ' ' "--with-gmp=$( pkgprefix -r gmp )"
 	var_append extraconfopt ' ' "--with-gmp-lib=$( pkgprefix -r libdir gmp )"
 	var_append extraconfopt ' ' "--with-gmp-include=$( pkgprefix -r includedir gmp )"
@@ -147,6 +160,10 @@ var_append extraconfopt ' ' "--with-mpc=$( pkgprefix -r libmpc )"
 	var_append extraconfopt ' ' "--with-mpc-lib=$( pkgprefix -r libdir libmpc )"
 	var_append extraconfopt ' ' "--with-mpc-include=$( pkgprefix -r includedir libmpc )"
 
+	export LDFLAGS="-Wl,-rpath,${root}${libdir}"
+
+fi
+
 # Graphite loop optimization
 if pkginstalled -f cloog && pkginstalled -f ppl; then
 	# use the cloog-isl backend
@@ -161,23 +178,6 @@ if pkginstalled -f cloog && pkginstalled -f ppl; then
 	var_append extraconfopt ' ' "--with-ppl-include=$( pkgprefix -r includedir ppl )"
 fi
 
-if atstage toolchain; then
-	bindir="/$prefix/crosscc"
-
-	var_append confopt " " "--with-sysroot=$sysroot"
-
-	var_append confopt " " "--program-prefix=${arch_target}-"
-	var_append confopt " " "--disable-cpp"
-	var_append confopt " " "--disable-shared"
-	var_append confopt " " "--disable-libssp"
-	var_append confopt " " "--disable-libgomp"
-	var_append confopt " " "--disable-libquadmath"
-	var_append confopt " " "--disable-libitm"
-
-	# use the native libraries we build in the toolchain directory
-	export LDFLAGS="-Wl,-rpath,${root}${libdir}"
-fi
-
 if atstage cross; then
 	# for gcc versions 4.3 and upwards we have to explicitely specifiy the
 	# target architecture at cross-compiling stage