From f795d323e170892e9b37b063a086325f793e167e Mon Sep 17 00:00:00 2001
From: Joel Rosdahl <joel@rosdahl.net>
Date: Sat, 11 May 2019 17:24:11 +0200
Subject: [PATCH] Hint about not running autogen.sh when building from release
 archive

Related to #418.
---
 autogen.sh | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/autogen.sh b/autogen.sh
index eb3d9ba12..00c9f52c8 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -2,7 +2,19 @@
 
 set -e
 
-rm -f dev_mode_disabled
+if [ -f dev_mode_disabled ]; then
+    cat <<EOF >&2
+Error: It looks like you are building ccache from a release archive. If so,
+there is no need to run autoconf.sh. See INSTALL.md for further instructions.
+
+If you do want to the enable the development mode, delete the file
+dev_mode_disabled first, but it's probably a better idea to work with the
+proper ccache Git repository directly as described on
+<https://ccache.dev/repo.html>.
+EOF
+    exit 1
+fi
+
 autoheader
 autoconf
 echo "Now run ./configure and make"
-- 
2.47.2