From e3b2bb78e19b155a46379b64dcc13699399a32cc Mon Sep 17 00:00:00 2001
From: Robin Haberkorn <robin.haberkorn@googlemail.com>
Date: Sun, 30 May 2021 18:06:35 +0200
Subject: fixed Clang builds

`-fno-optimize-strlen` is not supported on Clang and there is no way
to ignore unknown arguments.
---
 configure.ac | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 38d33bf..cca1cd3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -56,6 +56,7 @@ AC_PROG_CC
 # FIXME: We want -std=gnu11
 AC_PROG_CC_C99
 AC_PROG_SED
+AC_PROG_GREP
 AC_PROG_INSTALL
 
 # Mainly because of Scintilla, which depends on
@@ -75,6 +76,9 @@ AC_PROG_CXX
 AX_CXX_COMPILE_STDCXX(11, noext, mandatory)
 AC_CHECK_TOOL(AR, ar)
 
+# Whether $CC is Clang
+AM_CONDITIONAL(CLANG, [$CC --version | $GREP -i clang >/dev/null])
+
 # Check for Windows resource compiler and define
 # WIN32 conditional
 case $host in
-- 
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