opendoas: Set _OPENBSD_SOURCE only for NetBSD.

[Sunil Nimmagadda <sunil%nimmagadda.net@localhost>]

Module Name:	pkgsrc-wip
Committed By:	Sunil Nimmagadda <sunil%nimmagadda.net@localhost>
Pushed By:	skn
Date:		Tue Nov 3 09:21:47 2020 +0530
Changeset:	e4f45ab45b4c87435fbbb2523b0af745fd6a754f

Modified Files:
	opendoas/Makefile

Log Message:
opendoas: Set _OPENBSD_SOURCE only for NetBSD.

Add a comment about preferring libc version of reallocarray(3).

To see a diff of this commit:
https://wip.pkgsrc.org/cgi-bin/gitweb.cgi?p=pkgsrc-wip.git;a=commitdiff;h=e4f45ab45b4c87435fbbb2523b0af745fd6a754f

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

diffstat:
 opendoas/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diffs:
diff --git a/opendoas/Makefile b/opendoas/Makefile
index 1a388d0c4a..74410b43a0 100644
--- a/opendoas/Makefile
+++ b/opendoas/Makefile
@@ -29,7 +29,8 @@ CONFIGURE_ARGS+=	--mandir=${PREFIX}/${PKGMANDIR}
 USE_TOOLS=	gmake yacc
 BUILD_TARGET=	default
 
-CFLAGS+=	-D_OPENBSD_SOURCE=1
+# Prefer NetBSD's libc version of reallocarray(3)
+CFLAGS.NetBSD+=	-D_OPENBSD_SOURCE=1
 
 SPECIAL_PERMS+=	bin/doas ${SETUID_ROOT_PERMS}