From 3efac5658ff134ef6cda4f134e8fc32a1cf3927b Mon Sep 17 00:00:00 2001
From: Soner Tari <sonertari@gmail.com>
Date: Sun, 3 Apr 2022 17:40:36 +0300
Subject: [PATCH] Fix build errors with OpenSSL 3.0.x, but not deprecation
 warnings

This patch fixes errors only, so that build succeeds, but deprecation
warnings remain. It seems we need considerable changes to replace those
deprecated functions in the warnings.
---
 Mk/main.mk     | 4 ++++
 src/protossl.c | 5 +++++
 2 files changed, 9 insertions(+)

diff --git a/Mk/main.mk b/Mk/main.mk
index c229337..5f144fe 100644
--- a/Mk/main.mk
+++ b/Mk/main.mk
@@ -378,7 +378,11 @@ endif
 
 ifdef OPENSSL_FOUND
 PKG_CPPFLAGS+=	-I$(OPENSSL_FOUND)/include
+ifneq ($(findstring openssl-3.,$(OPENSSL_FOUND)),openssl-3.)
 PKG_LDFLAGS+=	-L$(OPENSSL_FOUND)/lib
+else
+PKG_LDFLAGS+=	-L$(OPENSSL_FOUND)/lib64
+endif
 PKG_LIBS+=	-lssl -lcrypto -lz
 endif
 ifdef LIBEVENT_FOUND
diff --git a/src/protossl.c b/src/protossl.c
index 37bd5ce..2d8a4c6 100644
--- a/src/protossl.c
+++ b/src/protossl.c
@@ -44,6 +44,11 @@
 static unsigned long ssl_session_context = 0x31415926;
 #endif /* USE_SSL_SESSION_ID_CONTEXT */
 
+#if OPENSSL_VERSION_NUMBER >= 0x30000000L
+#define ERR_GET_FUNC(x) 0
+#define ERR_func_error_string(x) ""
+#endif
+
 void
 protossl_log_ssl_error(struct bufferevent *bev, pxy_conn_ctx_t *ctx)
 {