From: Joel Rosdahl <joel@rosdahl.net>
Date: Sun, 13 Oct 2019 19:58:31 +0000 (+0200)
Subject: Add -MQ to compilation flags to make dependency files work properly
X-Git-Tag: v4.0~750
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fc5d0fb9fa6547db5c4de8cde384fdfb9771edd1;p=thirdparty%2Fccache.git

Add -MQ to compilation flags to make dependency files work properly

Looks like ccache’s own header dependencies have been broken since
4aa357782e48 and nobody noticed.

(cherry picked from commit a00b59c86136488d54a83bef10bc5a0f6b37eacf)
---

diff --git a/dev.mk.in b/dev.mk.in
index e2659c510..e50d59fb0 100644
--- a/dev.mk.in
+++ b/dev.mk.in
@@ -1,7 +1,7 @@
 # GNU make syntax reigns in this file.
 
 all_cflags += -Werror
-all_cppflags += -MD -MP -MF .deps/$(subst .._,,$(subst /,_,$(subst $(srcdir)/,,$<))).d
+all_cppflags += -MD -MP -MF .deps/$(subst .._,,$(subst /,_,$(subst $(srcdir)/,,$<))).d -MQ $@
 all_cxxflags += -Werror
 
 A2X = a2x