base-files: relink uclibc and libgcc libraries to remove leftovers of the statically linked initial libgcc

saves a few kb and gets rid of unused not exported functions as well
should also improve the reliability of mklibs

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@25800 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 14 insertions, 0 deletions

diff --git a/scripts/relink-lib.sh b/scripts/relink-lib.sh
new file mode 100755
index 000000000..5367b7093
--- /dev/null
+++ b/scripts/relink-lib.sh
@@ -0,0 +1,14 @@
+#!/bin/sh
+[ $# -lt 4 -o -z "$1" -o -z "$2" -o -z "$3" -o -z "$4" ] && {
+	echo "Usage: $0 <cross> <reference> <pic .a> <destination>"
+	exit 1
+}
+
+cross="$1"; shift
+ref="$1"; shift
+pic="$1"; shift
+dest="$1"; shift
+
+SYMBOLS="$(${cross}nm "$ref" | grep -E '........ [TW] ' | awk '$3 {printf "-u%s ", $3}')"
+set -x
+${cross}gcc -nostdlib -nostartfiles -shared -Wl,--gc-sections -o "$dest" $SYMBOLS "$pic" "$@"