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From efe7101786193eaddb749c0583af6b54aec6f289 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Tue, 2 Feb 2021 18:45:16 -0800
Subject: [PATCH] configure: Conditionally undefine backend m4 macro
Unlike the M4 builtin, this macro fails if macro is not defined
therefore recover the behavior of the builtin.
Upstream-Status: Pending
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
configure.ac | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/configure.ac b/configure.ac
index fe5054a..758f8c2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -127,7 +127,7 @@ fi
m4_set_foreach([crypto_backends], [backend],
[AM_CONDITIONAL(m4_toupper(backend), test "$found_crypto" = "backend")]
)
-m4_undefine([backend])
+m4_ifdef([backend], [m4_undefine([backend])])
# libz
--
2.30.0
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