From 0b92e53cf953159308d00670708d85c890efadc4 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Diego=20E=2E=20=27Flameeyes=27=20Petten=C3=B2?=
 <flameeyes@gmail.com>
Date: Fri, 21 Nov 2008 01:16:37 +0100
Subject: [PATCH] Check for --no-undefined linker flag and use it.
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit

This adds extra safety that the built libraries will have all the
correct dependencies linked in.

Signed-off-by: Diego E. 'Flameeyes' Pettenò <flameeyes@gmail.com>
---
 configure.in                     | 2 ++
 modules/mixer/simple/Makefile.am | 8 ++++----
 src/Makefile.am                  | 2 +-
 3 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/configure.in b/configure.in
index 5a0fc1b4..5bc0c010 100644
--- a/configure.in
+++ b/configure.in
@@ -44,6 +44,8 @@ AC_DISABLE_STATIC
 AC_LIBTOOL_DLOPEN
 AM_PROG_LIBTOOL
 
+CC_NOUNDEFINED
+
 dnl Checks for header files.
 AC_HEADER_STDC
 AM_CONFIG_HEADER(include/config.h)
diff --git a/modules/mixer/simple/Makefile.am b/modules/mixer/simple/Makefile.am
index dee1ed9f..789f6b57 100644
--- a/modules/mixer/simple/Makefile.am
+++ b/modules/mixer/simple/Makefile.am
@@ -18,20 +18,20 @@ endif
 noinst_HEADERS = sbase.h
 
 smixer_sbase_la_SOURCES = sbase.c
-smixer_sbase_la_LDFLAGS = -module -avoid-version
+smixer_sbase_la_LDFLAGS = -module -avoid-version $(LDFLAGS_NOUNDEFINED)
 smixer_sbase_la_LIBADD = ../../../src/libasound.la
 
 smixer_ac97_la_SOURCES = ac97.c sbasedl.c
-smixer_ac97_la_LDFLAGS = -module -avoid-version
+smixer_ac97_la_LDFLAGS = -module -avoid-version $(LDFLAGS_NOUNDEFINED)
 smixer_ac97_la_LIBADD = ../../../src/libasound.la
 
 smixer_hda_la_SOURCES = hda.c sbasedl.c
-smixer_hda_la_LDFLAGS = -module -avoid-version
+smixer_hda_la_LDFLAGS = -module -avoid-version $(LDFLAGS_NOUNDEFINED)
 smixer_hda_la_LIBADD = ../../../src/libasound.la
 
 if BUILD_PYTHON
 smixer_python_la_SOURCES = python.c
-smixer_python_la_LDFLAGS = -module -avoid-version $(pythonlibs)
+smixer_python_la_LDFLAGS = -module -avoid-version $(pythonlibs) $(LDFLAGS_NOUNDEFINED)
 smixer_python_la_CFLAGS = $(pythonincludes)
 smixer_python_la_LIBADD = ../../../src/libasound.la
 endif
diff --git a/src/Makefile.am b/src/Makefile.am
index 7d48b123..3204fe46 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -45,7 +45,7 @@ endif
 SUBDIRS += compat conf
 libasound_la_LIBADD += compat/libcompat.la @ALSA_DEPLIBS@
 
-libasound_la_LDFLAGS = -version-info $(COMPATNUM) $(VSYMS) $(SYMFUNCS)
+libasound_la_LDFLAGS = -version-info $(COMPATNUM) $(VSYMS) $(SYMFUNCS) $(LDFLAGS_NOUNDEFINED)
 
 control/libcontrol.la:
 	$(MAKE) -C control libcontrol.la
-- 
2.47.1