From d51f0698dfcd45cf209b0b1bcb50d28d96b4913f Mon Sep 17 00:00:00 2001
From: Bruno Haible <bruno@clisp.org>
Date: Tue, 5 Oct 2010 02:30:24 +0200
Subject: [PATCH] gnulib-tool: Synthesize appropriate _LDFLAGS for a libtool
 library.

* gnulib-tool (func_emit_lib_Makefile_am): When preparing for a libtool
library, put '-no-undefined' and the link dependencies into _LDFLAGS.
Reported by Bruce Korb and Eric Blake.
---
 ChangeLog   |  7 +++++++
 gnulib-tool | 12 ++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 8479498e3..f58806975 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
 2010-10-04  Bruno Haible  <bruno@clisp.org>
 
+	gnulib-tool: Synthesize appropriate _LDFLAGS for a libtool library.
+	* gnulib-tool (func_emit_lib_Makefile_am): When preparing for a libtool
+	library, put '-no-undefined' and the link dependencies into _LDFLAGS.
+	Reported by Bruce Korb and Eric Blake.
+
+2010-10-04  Bruno Haible  <bruno@clisp.org>
+
 	threadlib: Make option --with-libpth-prefix work.
 	* m4/threadlib.m4 (gl_THREADLIB_BODY): When testing whether pth works,
 	use $LIBPTH, not just -lpth.
diff --git a/gnulib-tool b/gnulib-tool
index 245ed995e..b89c2eb4a 100755
--- a/gnulib-tool
+++ b/gnulib-tool
@@ -2931,6 +2931,18 @@ func_emit_lib_Makefile_am ()
   echo "EXTRA_${libname}_${libext}_SOURCES ="
   if test "$libtool" = true; then
     echo "${libname}_${libext}_LDFLAGS = \$(AM_LDFLAGS)"
+    echo "${libname}_${libext}_LDFLAGS += -no-undefined"
+    # Synthesize an ${libname}_${libext}_LDFLAGS augmentation by combining
+    # the link dependencies of all modules.
+    for module in $modules; do
+      func_verify_nontests_module
+      if test -n "$module"; then
+        func_get_link_directive "$module"
+      fi
+    done \
+      | LC_ALL=C sed -e '/^$/d' -e 's/ when linking with libtool.*//' \
+      | LC_ALL=C sort -u \
+      | LC_ALL=C sed -e 's/^/'"${libname}_${libext}"'_LDFLAGS += /'
   fi
   echo
   if test -n "$pobase"; then
-- 
2.11.0