[Buildroot] [PATCH] alsa-lib: disable libdl for static only builds

[Lada Trimasova]

-ldl includes the reference to the library that has
the symbols for loading dynamic libraries.
So there is no need for this library for static only builds.
Even though alsa-lib uses dlopen, it has functions snd_dlopen
and others which can emulate dynamic linking for the static
build of the alsa-lib library and there is no need in libdl
dlopen when static build only.
This patch fixes build failures of the shairport-sync
(and probably other packages) when static libs are used.

Fixes:
http://autobuild.buildroot.net/results/85a/85a3f01bcd4eb2ce7ac480e63b4cc04bf7c8f3e5/

Signed-off-by: Lada Trimasova <ltrimas at synopsys.com>
Cc: Alexey Brodkin <abrodkin at synopsys.com>
Cc: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Cc: Peter Korsgaard <peter at korsgaard.com>
---
 package/alsa-lib/alsa-lib.mk | 1 +
 1 file changed, 1 insertion(+)

diff --git a/package/alsa-lib/alsa-lib.mk b/package/alsa-lib/alsa-lib.mk
index ea2351c..6a4d14f 100644
--- a/package/alsa-lib/alsa-lib.mk
+++ b/package/alsa-lib/alsa-lib.mk
@@ -21,6 +21,7 @@ ALSA_LIB_CONF_OPTS = \
 # Can't build with static & shared at the same time (1.0.25+)
 ifeq ($(BR2_STATIC_LIBS),y)
 ALSA_LIB_CONF_OPTS += --enable-shared=no
+ALSA_LIB_CONF_OPTS += --without-libdl
 else
 ALSA_LIB_CONF_OPTS += --enable-static=no
 endif
-- 
2.5.0