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