Build wine-pthread on Darwin.

diff --git a/configure b/configure
index 4846875..e3083ff 100755
--- a/configure
+++ b/configure
@@ -14685,6 +14685,12 @@
     MAIN_BINARY="wine-glibc"
 
     ;;
+  darwin*)
+    WINE_BINARIES="wine-pthread"
+
+    MAIN_BINARY="wine-pthread"
+
+    ;;
   *)
     WINE_BINARIES="wine-kthread"
 
diff --git a/configure.ac b/configure.ac
index 9dff3a5..9e0a42f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -994,6 +994,10 @@
     AC_SUBST(WINE_BINARIES,"wine-glibc wine-kthread wine-pthread wine-preloader")
     AC_SUBST(MAIN_BINARY,"wine-glibc")
     ;;
+  darwin*)
+    AC_SUBST(WINE_BINARIES,"wine-pthread")
+    AC_SUBST(MAIN_BINARY,"wine-pthread")
+    ;;
   *)
     AC_SUBST(WINE_BINARIES,"wine-kthread")
     AC_SUBST(MAIN_BINARY,"wine-kthread")