From 4a46351e0672d1ee6c6998e36b1ffac0ac7bdbe0 Mon Sep 17 00:00:00 2001
From: Jim Meyering <jim@meyering.net>
Date: Sat, 4 Apr 1998 08:05:18 +0000
Subject: [PATCH] Add conditionals so that running `make' in an unconfigured
 source directory will get a reasonable diagnostic.

---
 GNUmakefile | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/GNUmakefile b/GNUmakefile
index 81667ac..972384d 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -3,5 +3,21 @@
 # This makefile is used only if you run GNU Make.
 # It is necessary if you modify files in the m4/ directory or
 # want to build targets usually of interest only to the maintainer.
+
+have-Makefile := $(shell test -f Makefile && echo yes)
+
+# If the user runs GNU make but has not yet run ./configure,
+# give them a diagnostic.
+ifeq ($(have-Makefile),yes)
+
 include Makefile
 include $(srcdir)/Makefile.maint
+
+else
+
+all:
+	@echo There seems to be no Makefile in this directory.
+	@echo "You must run ./configure before running \`make'."
+	@exit 1
+
+endif
-- 
2.7.4