1 files changed, 48 insertions, 0 deletions
diff --git a/release/mksmallso.sh b/release/mksmallso.sh
new file mode 100755
index 00000000..2f147bd0
--- /dev/null
+++ b/release/mksmallso.sh
@@ -0,0 +1,48 @@
+# Usage:
+#  $1 : Destination merged, stripped, small shared library
+#  $2 : lib*_pic.a files from which to produce the final small library
+#  $3 : .so files that this library should depend on
+#  ${4:$} : executables and shared libraries whos dependencies we care about
+
+while :; do
+  case "$1" in
+    -*) LDARGS="$1"; shift;;
+    *)  break;;
+  esac
+done
+
+MERGED_SO="$1"; shift
+PIC_LIBS="$1"; shift
+DEPS="$1"; shift
+
+GCC=${GCC-gcc}
+LD=${LD-ld}
+OBJDUMP=${OBJDUMP-objdump}
+OBJCOPY=${OBJCOPY-objcopy}
+
+DEP_FLAGS_FILE=/tmp/,depflags.$$
+NEED_DSYMS_FILE=/tmp/,need.dyn.syms.$$
+HAVE_DSYMS_FILE=/tmp/,have.dyn.syms.$$
+MERGED_PIC_LIB=/tmp/,libmerged_pic.a.$$
+
+#trap "rm -f $DEP_FLAGS_FILE $MERGED_PIC_LIB $NEED_DSYMS_FILE $HAVE_DSYMS_FILE" 0
+
+
+$OBJDUMP --dynamic-syms "$@" 2>/dev/null \
+  | sed -n 's/^.*\*UND\*.* \([^ ]*\)$/\1/p' \
+  | sort -u > $NEED_DSYMS_FILE
+
+#	       00000000  w    F .text	00000000 syscall_device_write_request
+#              00000000 g     F .text	0000056c __strtoq_internal
+$OBJDUMP --syms $PIC_LIBS 2>/dev/null \
+  | sed -n 's/^........ \(g \| w\)   .. .*	[0-9a-f]....... \([^ ]*\)$/\2/p' \
+  | sort -u > $HAVE_DSYMS_FILE
+
+# This had better be gnu diff...
+diff --unchanged-l='%L' --old-l= --new-l= $NEED_DSYMS_FILE $HAVE_DSYMS_FILE \
+  | sed 's/^/-u/' > $DEP_FLAGS_FILE
+
+$GCC $LDARGS -nostdlib -nostartfiles -shared -Wl,-soname=`basename $MERGED_SO` `cat $DEP_FLAGS_FILE` \
+    -o $MERGED_SO.uns $PIC_LIBS $DEPS \
+&& $OBJCOPY --strip-debug $MERGED_SO.uns $MERGED_SO \
+&& rm -f $MERGED_SO.uns