From ffff79dad7f396cf0bfe7b72d212da72245a6f01 Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering@fb.com>
Date: Sat, 31 Dec 2016 01:31:59 -0800
Subject: maint.mk: do not always evaluate intprops-related shell

* top/maint.mk (_intprops_names): Change := to just "=" to avoid
using gnulib_dir undefined (gnulib_dir is defined later in the
file, which will be fixed separately), and besides, there is no
need to incur the cost of this shell invocation for every single
use of this .mk file.  Reported by Eric Blake in
https://lists.gnu.org/archive/html/bug-gnulib/2016-12/msg00137.html
---
 top/maint.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'top/maint.mk')

diff --git a/top/maint.mk b/top/maint.mk
index 6eb9361ac4..64db9ee00e 100644
--- a/top/maint.mk
+++ b/top/maint.mk
@@ -661,7 +661,7 @@ sc_prohibit_strings_without_use:
 gl_extract_define_simple = \
   /^\# *define ([A-Z]\w+)\(/ and print $$1
 # Filter out duplicates and convert to a space-separated list:
-_intprops_names := \
+_intprops_names = \
   $(shell f=$(gnulib_dir)/lib/intprops.h;				\
     perl -lne '$(gl_extract_define_simple)' $$f | sort -u | tr '\n' ' ')
 # Remove trailing space and convert to a regular expression:
-- 
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