[Buildroot] [git commit] package/libwebsockets: fix build without threads

[Buildroot] [git commit] package/libwebsockets: fix build without threads

[Arnout Vandecappelle]

commit: https://git.buildroot.net/buildroot/commit/?id=c435d4ec60432f96abbc58cd1daf190528fafaa3
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/master

Fix the following build failure without threads raised since bump to
version 4.3.1 in commit 3a9cf51ab38b6a3a095241b8e87eab7e5b5bd617 and
https://github.com/warmcat/libwebsockets/commit/8eca7e17f27c8588170c5fa5fa3e6b14eb90e35d:

In file included from /nvmedata/autobuild/instance-1/output-1/build/libwebsockets-4.3.1/lib/plat/unix/unix-caps.c:28:
/nvmedata/autobuild/instance-1/output-1/build/libwebsockets-4.3.1/lib/core/./private-lib-core.h:68:11: fatal error: pthread.h: No such file or directory
   68 |  #include <pthread.h>
      |           ^~~~~~~~~~~

Fixes:
 - http://autobuild.buildroot.org/results/5d011b65e530339eb3f4d06a08caabc6a73b403b

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
---
 package/libwebsockets/libwebsockets.mk | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/package/libwebsockets/libwebsockets.mk b/package/libwebsockets/libwebsockets.mk
index f8093b92fa..63d50999a5 100644
--- a/package/libwebsockets/libwebsockets.mk
+++ b/package/libwebsockets/libwebsockets.mk
@@ -20,9 +20,13 @@ LIBWEBSOCKETS_CONF_OPTS = \
 # in the library. If unset, LWS_MAX_SMP defaults to 32 and a small
 # amount of pthread mutex code is built into the library.
 ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),)
-LIBWEBSOCKETS_CONF_OPTS += -DLWS_MAX_SMP=1
+LIBWEBSOCKETS_CONF_OPTS += \
+	-DLWS_MAX_SMP=1 \
+	-DLWS_WITH_SYS_SMD=OFF
 else
-LIBWEBSOCKETS_CONF_OPTS += -DLWS_MAX_SMP=
+LIBWEBSOCKETS_CONF_OPTS += \
+	-DLWS_MAX_SMP= \
+	-DLWS_WITH_SYS_SMD=ON
 endif
 
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
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