Tweak symbols test in such a way that it would have caught the recent

Symbols.list mistake: undefine aliases (except _cfb block ciphers which
are aliases for historical reasons). Use -Wl,--no-allow-shlib-undefined.

2 files changed, 9 insertions, 3 deletions

diff --git a/src/regress/lib/libcrypto/symbols/Makefile b/src/regress/lib/libcrypto/symbols/Makefile
index 394bc08065..b37fb87e7c 100644
--- a/src/regress/lib/libcrypto/symbols/Makefile
+++ b/src/regress/lib/libcrypto/symbols/Makefile
@@ -1,4 +1,4 @@
-#       $OpenBSD: Makefile,v 1.2 2022/06/19 17:05:31 tb Exp $
+#       $OpenBSD: Makefile,v 1.3 2022/09/21 15:24:45 tb Exp $
 
 TESTS = \
         symbols
@@ -23,7 +23,8 @@ include_headers.c: ${BSDSRCDIR}/lib/libcrypto/Symbols.list
 LDADD=          -lcrypto
 DPADD=          ${LIBCRYPTO}
 LDFLAGS+=       -lcrypto
-CFLAGS+= -Wno-deprecated-declarations
+LDFLAGS+=       -Wl,--no-allow-shlib-undefined
+CFLAGS+=        -Wno-deprecated-declarations
 
 CLEANFILES+= include_headers.c symbols.c symbols.c.tmp
 
diff --git a/src/regress/lib/libcrypto/symbols/symbols.awk b/src/regress/lib/libcrypto/symbols/symbols.awk
index d7c534272c..9d7f5ceeeb 100644
--- a/src/regress/lib/libcrypto/symbols/symbols.awk
+++ b/src/regress/lib/libcrypto/symbols/symbols.awk
@@ -1,4 +1,4 @@
-# $OpenBSD: symbols.awk,v 1.6 2022/01/12 09:04:40 tb Exp $
+# $OpenBSD: symbols.awk,v 1.7 2022/09/21 15:24:45 tb Exp $
 
 # Copyright (c) 2018,2020 Theo Buehler <tb@openbsd.org>
 #
@@ -114,6 +114,11 @@ BEGIN {
 
 {
         symbols[$0] = $0
+
+        # Undefine aliases, so we don't accidentally leave them in Symbols.list.
+        # The _cfb ciphers are aliased to _cfb64, so skip them.
+        if ($0 !~ "^EVP_.*cfb$")
+                printf("#ifdef %s\n#undef %s\n#endif\n", $0, $0)
 }
 
 END {