From 80d208e47a525c915e3961efa61ccf91120ffafa Mon Sep 17 00:00:00 2001
From: Andrey Zhizhikin <andrey.z@gmail.com>
Date: Wed, 3 Feb 2021 20:44:34 +0000
Subject: [PATCH] configure.ac: check for CPP prog

Absence of check for CPP_PROG causes following build errors:
| checking TCP_CONGESTION socket option... ../git/configure: line 14427: CPP: command not found
| ../git/configure: line 14553: ac_fn_c_try_cpp: command not found
| ../git/configure: line 14553: ac_fn_c_try_cpp: command not found

Upstream-Status: Pending
Signed-off-by: Andrey Zhizhikin <andrey.z@gmail.com>
---
 configure.ac | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configure.ac b/configure.ac
index 2594b39..559b160 100644
--- a/configure.ac
+++ b/configure.ac
@@ -49,6 +49,7 @@ AC_CANONICAL_HOST
 # Checks for tools: c compiler, ranlib (used for creating static libraries),
 # symlinks and libtool
 AC_PROG_CC
+AC_PROG_CPP
 AC_PROG_LN_S
 
 # Add -Wall if we are using GCC.