From: Andre Noll <maan@systemlinux.org>
Date: Sun, 20 Apr 2014 00:55:12 +0000 (+0000)
Subject: build: Avoid excessive dep generation on Makefile changes.
X-Git-Tag: v0.5.4~46^2~8
X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=commitdiff_plain;h=80bb4541edc2934389045b6729a65bc3f4dd27d9

build: Avoid excessive dep generation on Makefile changes.

Letting error2 depend on config.h instead of Makefile should be no
worse, and it does not cause all dependencies to be recreated in the
common case where config.h remains unchanged after reconfiguration.
---

diff --git a/Makefile.real b/Makefile.real
index 978bebfa..58761a7b 100644
--- a/Makefile.real
+++ b/Makefile.real
@@ -167,7 +167,7 @@ $(man_dir)/para_%.1: $(ggo_dir)/%.ggo man_util.bash | $(man_dir) $(help2man_dir)
 $(hostbin_dir)/error2: error2.c | $(hostbin_dir)
 	@[ -z "$(Q)" ] || echo 'HCC $<'
 	$(Q) $(HOSTCC) -o $@ $<
-error2.h: $(hostbin_dir)/error2 Makefile
+error2.h: $(hostbin_dir)/error2 config.h
 	@[ -z "$(Q)" ] || echo 'ER2 $<'
 	@echo "$(object_executable_matrix)" | $< > $@