Add support for symbol hiding disabled by default.

Fully explained in libcrypto/README. TL;DR make sure libcrypto
and libssl's function calls internally and to each other are via
symbol names that won't get overridden by linking other libraries.

Mostly work by guenther@, which will currently be gated behind a
build setting NAMESPACE=yes. once we convert all the symbols to
this method we will do a major bump and pick up the changes.

ok tb@ jsing@

1 files changed, 6 insertions, 1 deletions

diff --git a/src/lib/libssl/Makefile b/src/lib/libssl/Makefile
index 1788cd75a3..a6ee26a667 100644
--- a/src/lib/libssl/Makefile
+++ b/src/lib/libssl/Makefile
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.77 2022/08/17 07:39:19 jsing Exp $
+# $OpenBSD: Makefile,v 1.78 2022/11/11 11:25:18 beck Exp $
 
 .include <bsd.own.mk>
 .ifndef NOMAN
@@ -16,6 +16,9 @@ CFLAGS+= -Wall -Wundef
 CFLAGS+= -Werror
 .endif
 CFLAGS+= -DLIBRESSL_INTERNAL
+.ifdef NAMESPACE
+CFLAGS+= -DLIBRESSL_NAMESPACE
+.endif
 .ifdef TLS1_3
 CFLAGS+= -DLIBRESSL_HAS_TLS1_3_CLIENT
 CFLAGS+= -DLIBRESSL_HAS_TLS1_3_SERVER
@@ -24,7 +27,9 @@ CFLAGS+= -DLIBRESSL_HAS_TLS1_3_SERVER
 CFLAGS+= -DTLS13_DEBUG
 .endif
 CFLAGS+= -I${.CURDIR}
+CFLAGS+= -I${.CURDIR}/../libcrypto/hidden
 CFLAGS+= -I${.CURDIR}/../libcrypto/bio
+CFLAGS+= -I${.CURDIR}/hidden
 
 LDADD+= -L${BSDOBJDIR}/lib/libcrypto -lcrypto