samba: Fix configure tests to work with clang

Do not use nested functions ( main inside main )
Use global scope for __thread variables

Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-networking/recipes-connectivity/samba/samba/0001-lib-replace-wscript-Avoid-generating-nested-main-fun.patch

@@ -0,0 +1,30 @@
+From 3a935c638605bfb392ca7780d22c08c1a0a71e71 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Thu, 5 Sep 2019 21:37:33 -0700
+Subject: [PATCH 1/2] lib/replace/wscript: Avoid generating nested main
+ function
+
+clang is not happy when it sees another main nested inside the main
+function and fails the test for prctl syscall, therefore avoid adding
+implicit main() here
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ lib/replace/wscript | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/lib/replace/wscript b/lib/replace/wscript
+index a7fd25d..d6767fc 100644
+--- a/lib/replace/wscript
++++ b/lib/replace/wscript
+@@ -137,6 +137,7 @@ def configure(conf):
+                     }
+                     ''',
+                     'HAVE_PRCTL',
++                    addmain=False,
+                     headers='sys/prctl.h',
+                     msg='Checking for prctl syscall')
+ 
+-- 
+2.23.0
+

meta-networking/recipes-connectivity/samba/samba/0002-util_sec.c-Move-__thread-variable-to-global-scope.patch

@@ -0,0 +1,58 @@
+From c62a6f32ab965de2ec77a614f20f04568116835b Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Thu, 5 Sep 2019 21:39:05 -0700
+Subject: [PATCH 2/2] util_sec.c: Move __thread variable to global scope
+
+Make clang happy otherwise it complains about variable scope
+
+fixes
+
+source3/./lib/util_sec.c:470:4: error: '__thread' variables must have global storage
+        } __thread cache;
+          ^
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ source3/lib/util_sec.c | 19 +++++++++++--------
+ 1 file changed, 11 insertions(+), 8 deletions(-)
+
+diff --git a/source3/lib/util_sec.c b/source3/lib/util_sec.c
+index 9408269..7390318 100644
+--- a/source3/lib/util_sec.c
++++ b/source3/lib/util_sec.c
+@@ -444,6 +444,17 @@ void become_user_permanently(uid_t uid, gid_t gid)
+ 	assert_gid(gid, gid);
+ }
+ 
++#ifdef HAVE___THREAD
++	struct cache_t {
++		bool active;
++		uid_t uid;
++		gid_t gid;
++		size_t setlen;
++		uintptr_t gidset;
++	};
++
++static __thread struct cache_t cache;
++#endif
+ /**********************************************************
+  Function to set thread specific credentials. Leave
+  saved-set uid/gid alone.Must be thread-safe code.
+@@ -461,14 +472,6 @@ int set_thread_credentials(uid_t uid,
+ 	 * available.
+ 	 */
+ #ifdef HAVE___THREAD
+-	static struct {
+-		bool active;
+-		uid_t uid;
+-		gid_t gid;
+-		size_t setlen;
+-		uintptr_t gidset;
+-	} __thread cache;
+-
+ 	if (cache.active &&
+ 	    cache.uid == uid &&
+ 	    cache.gid == gid &&
+-- 
+2.23.0
+

meta-networking/recipes-connectivity/samba/samba_4.10.7.bb

@@ -24,6 +24,8 @@ SRC_URI = "${SAMBA_MIRROR}/stable/samba-${PV}.tar.gz \
            file://smb_conf-4.7.0.patch \
            file://volatiles.03_samba \
            file://0001-waf-add-support-of-cross_compile.patch \
+           file://0001-lib-replace-wscript-Avoid-generating-nested-main-fun.patch \
+           file://0002-util_sec.c-Move-__thread-variable-to-global-scope.patch \
            "
 SRC_URI_append_libc-musl = " \
            file://samba-pam.patch \