Add conditionals so that running `make' in an

unconfigured source directory will get a reasonable diagnostic.

diff --git a/GNUmakefile b/GNUmakefile
index 81667ac..972384d 100644 (file)
--- 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