OpenSSL: fix bulid on older library versions

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

diff --git a/src/OS/Makefile-SunOS5 b/src/OS/Makefile-SunOS5
index 33cb1f0337fcf776265bf800b313ec66be712fd7..557c031fd41011424ee13253b9a2cf5d08d4bee0 100644 (file)
--- a/src/OS/Makefile-SunOS5
+++ b/src/OS/Makefile-SunOS5
@@ -18,5 +18,6 @@ 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