db: fix gcc8 build

db/.signature

@@ -1,5 +1,6 @@
 untrusted comment: verify with /etc/ports/core.pub
-RWRJc1FUaeVeqinJMq0kJkDWOs3s+UrcXVJm76khhvj1V7pe5UhoHL2K3mlBSJ3T+uzCZ5iwx9qgQQxFv+N16ztpz4dn01JlOw0=
-SHA256 (Pkgfile) = d596c5f1ffccab08cbbceaae819b536dacc80a9fcadbcfc94a69dd2ba2907bb1
+RWRJc1FUaeVeqqI40v3L9iavReKUYQYWk2zTWj9/n/pBRBhTgVlkefq79eiQRHPmF1Oklimzkfgz0b40fEIGWuzQiE1U4RaObws=
+SHA256 (Pkgfile) = 676569b36aae5b5ca3fb904169acff8f5db2af95e3b4b148e9041a401c9f32db
 SHA256 (.footprint) = 3a4d0e8a4f718b7d171558a53799371c27bdcacf7991ef39b5c82e16d51b0f02
 SHA256 (db-5.3.28.tar.gz) = e0a992d740709892e81f9d93f06daf305cf73fb81b545afe72478043172c3628
+SHA256 (0001-atomic-Rename-local-__atomic_compare_exchange-to-avo.patch) = 696ac5af5473f0d85ecc6af44a85333c91500721fb5c33028c05e843429058d1

db/0001-atomic-Rename-local-__atomic_compare_exchange-to-avo.patch

@@ -0,0 +1,45 @@
+From 29621d637e30982489693f2e207ce6a1790e3337 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Wed, 22 Mar 2017 15:32:26 +0000
+Subject: [PATCH] atomic: Rename local __atomic_compare_exchange to avoid clash
+ with builtins
+
+Helps building with clang
+
+Fixes
+
+../db-5.3.28/src/dbinc/atomic.h:179:19: error: definition of builtin function '__atomic_compare_exchange'
+static inline int __atomic_compare_exchange(
+
+Upstream-Status: Pending
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ src/dbinc/atomic.h | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/dbinc/atomic.h b/src/dbinc/atomic.h
+index 6a858f7..1b49de5 100644
+--- a/src/dbinc/atomic.h
++++ b/src/dbinc/atomic.h
+@@ -144,7 +144,7 @@ typedef LONG volatile *interlocked_val;
+ #define	atomic_inc(env, p)	__atomic_inc(p)
+ #define	atomic_dec(env, p)	__atomic_dec(p)
+ #define	atomic_compare_exchange(env, p, o, n)	\
+-	__atomic_compare_exchange((p), (o), (n))
++	__db_atomic_compare_exchange((p), (o), (n))
+ static inline int __atomic_inc(db_atomic_t *p)
+ {
+ 	int	temp;
+@@ -176,7 +176,7 @@ static inline int __atomic_dec(db_atomic_t *p)
+  * http://gcc.gnu.org/onlinedocs/gcc-4.1.0/gcc/Atomic-Builtins.html
+  * which configure could be changed to use.
+  */
+-static inline int __atomic_compare_exchange(
++static inline int __db_atomic_compare_exchange(
+ 	db_atomic_t *p, atomic_value_t oldval, atomic_value_t newval)
+ {
+ 	atomic_value_t was;
+-- 
+1.8.3.1
+

db/Pkgfile

@@ -4,11 +4,15 @@
 
 name=db
 version=5.3.28
-release=1
-source=(http://download.oracle.com/berkeley-db/$name-$version.tar.gz)
+release=2
+source=(http://download.oracle.com/berkeley-db/$name-$version.tar.gz \
+	0001-atomic-Rename-local-__atomic_compare_exchange-to-avo.patch)
 
 build() {
-    cd $name-$version/build_unix
+    cd $name-$version
+    patch -p1 -i $SRC/0001-atomic-Rename-local-__atomic_compare_exchange-to-avo.patch
+
+    cd build_unix
     ../dist/configure --prefix=/usr \
                       --enable-compat185 \
                       --enable-shared \