[PATCH] openssl-compat: Test for OpenSSL_add_all_algorithms before using.

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OpenSSL 1.1.0 has deprecated this function.
---
 configure.ac                    | 1 +
 openbsd-compat/openssl-compat.c | 2 ++
 openbsd-compat/openssl-compat.h | 4 ++++
 3 files changed, 7 insertions(+)

diff --git a/configure.ac b/configure.ac
index 3f7fe2cd..db2aade8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2710,6 +2710,7 @@ if test "x$openssl" = "xyes" ; then
 	])
 	# LibreSSL/OpenSSL 1.1x API
 	AC_CHECK_FUNCS([ \
+		OpenSSL_add_all_algorithms \
 		OPENSSL_init_crypto \
 		DH_get0_key \
 		DH_get0_pqg \
diff --git a/openbsd-compat/openssl-compat.c b/openbsd-compat/openssl-compat.c
index 5ade8f0b..71e049bd 100644
--- a/openbsd-compat/openssl-compat.c
+++ b/openbsd-compat/openssl-compat.c
@@ -70,7 +70,9 @@ ssh_compatible_openssl(long headerver, long libver)
 void
 ssh_OpenSSL_add_all_algorithms(void)
 {
+#ifdef HAVE_OPENSSL_ADD_ALL_ALGORITHMS
 	OpenSSL_add_all_algorithms();
+#endif
 
 	/* Enable use of crypto hardware */
 	ENGINE_load_builtin_engines();
diff --git a/openbsd-compat/openssl-compat.h b/openbsd-compat/openssl-compat.h
index b87ce59e..3ebdcca1 100644
--- a/openbsd-compat/openssl-compat.h
+++ b/openbsd-compat/openssl-compat.h
@@ -113,6 +113,10 @@ void ssh_OpenSSL_add_all_algorithms(void);
 
 #endif	/* SSH_DONT_OVERLOAD_OPENSSL_FUNCS */
 
+#if !defined(USE_OPENSSL_ENGINE) && !defined(HAVE_OPENSSL_ADD_ALL_ALGORITHMS)
+# define OpenSSL_add_all_algorithms
+#endif
+
 /* LibreSSL/OpenSSL 1.1x API compat */
 #ifndef HAVE_DSA_GET0_PQG
 void DSA_get0_pqg(const DSA *d, const BIGNUM **p, const BIGNUM **q,
-- 
2.19.1

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