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[exim.git] / src / OS / Makefile-SunOS5

diff --git a/src/OS/Makefile-SunOS5 b/src/OS/Makefile-SunOS5
index 33cb1f0337fcf776265bf800b313ec66be712fd7..3b436f4bf022c51f66ae2f9382e7e6b55c95ac6c 100644 (file)
--- 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