Enable pthread support in mpeglib on openbsd

Signed-off-by: François Andriot <francois.andriot@free.fr>

mpeglib/configure.in.in

@@ -158,6 +158,9 @@ case "$OS_TYPE" in
   NetBSD)
     kde_mpeglib_compiles=yes
     ;;
+  OpenBSD)
+    kde_mpeglib_compiles=yes
+    ;;
   Linux)
     kde_mpeglib_compiles=yes
     ;;
@@ -188,6 +191,12 @@ case "$OS_TYPE" in
     AC_DEFINE(OS_Linux,1,[Define if you have linux pthread])
     ;;
 
+  OpenBSD)
+    OS_TYPE="BSD"
+    AC_CHECK_LIB(c_r, pthread_create, [LIBPTHREAD="-pthread"])
+    AC_DEFINE(OS_BSD,1,[Define if you have BSD pthread])
+    ;;
+
   FreeBSD | DragonFly)
     OS_TYPE="BSD"
     AC_DEFINE(OS_BSD,1,[Define if you have BSD pthread])