Avoid leaking some variables from ebuild_main() into the environment (local
variables are exposed to 'children').

svn path=/main/trunk/; revision=13316
diff --git a/bin/ebuild.sh b/bin/ebuild.sh
index c086e6d..8fad20b 100755
--- a/bin/ebuild.sh
+++ b/bin/ebuild.sh
@@ -1901,8 +1901,6 @@
 
 ebuild_main() {
 	local f x
-	local export_vars="ASFLAGS CCACHE_DIR CCACHE_SIZE
-		CFLAGS CXXFLAGS LDFLAGS LIBCFLAGS LIBCXXFLAGS"
 
 	if ! hasq $EBUILD_SH_ARGS clean depend help info nofetch ; then
 
@@ -1931,6 +1929,7 @@
 	if [[ $EBUILD_PHASE != depend ]] ; then
 		local phase_func=$(_ebuild_arg_to_phase "$EAPI" "$EBUILD_PHASE")
 		[[ -n $phase_func ]] && _ebuild_phase_funcs "$EAPI" "$phase_func"
+		unset phase_func
 	fi
 
 	source_all_bashrcs
@@ -1971,7 +1970,8 @@
 		case "$EBUILD_SH_ARGS" in
 		configure|compile)
 
-			for x in $export_vars ; do
+			for x in ASFLAGS CCACHE_DIR CCACHE_SIZE \
+				CFLAGS CXXFLAGS LDFLAGS LIBCFLAGS LIBCXXFLAGS ; do
 				[[ ${!x-unset} != unset ]] && export $x
 			done