X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/f096bcccb8e4c9ba57d128c2f08c52f7dc94e07d..fd3b39c16b3040cc7f12dbc3afdfc4e9e6e0807b:/src/OS/Makefile-SunOS5

diff --git a/src/OS/Makefile-SunOS5 b/src/OS/Makefile-SunOS5
index 33cb1f033..3b436f4bf 100644
--- a/src/OS/Makefile-SunOS5
+++ b/src/OS/Makefile-SunOS5
@@ -1,4 +1,5 @@
 # Exim: OS-specific make file for SunOS5
+# Copyright (c) The Exim Maintainers 2020
 
 HAVE_ICONV=yes
 
@@ -18,5 +19,6 @@ XLFLAGS=-L$(X11)/lib -R$(X11)/lib
 X11LIB=$(X11)/lib
 
 OS_C_INCLUDES=setenv.c
+CFLAGS += -D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED=1 -D__EXTENSIONS__
 
 # End