From 03d0a7e2aa3c1a2134c9fa0a957292f4316e0ea5 Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@gnu.org>
Date: Thu, 9 May 1996 00:53:12 +0000
Subject: * extract-dynsym: New file.

	* Makefile (distribute): Add it.
---
 ChangeLog      |  2 ++
 Makefile       |  1 +
 extract-dynsym | 23 +++++++++++++++++++++++
 3 files changed, 26 insertions(+)
 create mode 100755 extract-dynsym

diff --git a/ChangeLog b/ChangeLog
index 1609c71eed..5e459d07bd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 Wed May  8 20:04:29 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
 
+	* extract-dynsym: New file.
+	* Makefile (distribute): Add it.
 	* Rules (subdir_install): Depend on $(common-objpfx)sor-$(subdir).
 	[! libc.so-version]: Clear static-only-routines.
 	($(common-objpfx)sor-$(subdir)): New target.
diff --git a/Makefile b/Makefile
index 8c514f349f..b9d0c9bc64 100644
--- a/Makefile
+++ b/Makefile
@@ -225,6 +225,7 @@ distribute  := README INSTALL NOTES COPYING.LIB COPYING NEWS		\
 	       Makefile Makeconfig Makerules Rules Make-dist MakeTAGS	\
 	       extra-lib.mk o-iterator.mk				\
 	       ansidecl.h mkinstalldirs move-if-change install-sh	\
+	       extract-dynsym						\
 	       configure configure.in aclocal.m4 config.sub config.guess\
 	       config.make.in config-name.in Makefile.in		\
 	       munch-tmpl.c munch.awk sysdep.h set-hooks.h libc-symbols.h
diff --git a/extract-dynsym b/extract-dynsym
new file mode 100755
index 0000000000..421dbd6fd0
--- /dev/null
+++ b/extract-dynsym
@@ -0,0 +1,23 @@
+#!/bin/sh
+
+# Extract from an ELF shared object file just the dynamic symbols necessary
+# to link against it and the (GNU extension) warning sections that linking
+# against it may use to produce warning messages.
+
+infile=$1
+outfile=$2
+
+# Handle both objdump -h output formats.
+osechdr='^SECTION [0-9]+ \['
+nsechdr='^ +[0-9]+ '
+
+$OBJCOPY -S `$OBJDUMP -h $infile | $AWK "
+/($osechdr|$nsechdr)"'\.(hash|dyn[a-z]+|gnu\.warning[a-zA-Z_.]*) / { next; }
+/'"$osechdr"'/ { printf "--remove-section=%s ", $3 }
+/'"$nsechdr"'/ { printf "--remove-section=%s ", $2 }
+' |
+# The old format puts brackets around section names.  The new format fails
+# to delimit long section names from the following hex digits.
+sed -e 's/[][]//g' -e 's/0[0-9a-f]* / /g'` $infile $outfile.new
+
+mv -f $outfile.new $outfile
-- 
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