From 2672e90414c5fce00647595028aec74da8e2ad6d Mon Sep 17 00:00:00 2001
From: "Bernhard M. Wiedemann" <bwiedemann@suse.de>
Date: Sun, 11 Feb 2024 14:37:30 +0100
Subject: [PATCH] Add explicit dependency on mapcalc.tab.h

and use a .META file to tell make that
both .c and .h are created by one call
to allow for reproducible builds.

Without this change, r.mapcalc and r3.mapcalc
would be rebuilt a 2nd time in a make -j1 run
with slightly varied order of mapcalc.yy.o and mapcalc.tab.o

This patch was done while working on reproducible builds for openSUSE.
---
 raster/r.mapcalc/Makefile | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/raster/r.mapcalc/Makefile b/raster/r.mapcalc/Makefile
index e427ebfbe98..6720d53f5cd 100644
--- a/raster/r.mapcalc/Makefile
+++ b/raster/r.mapcalc/Makefile
@@ -20,7 +20,11 @@ default: multi
 $(BIN)/$(PGM2)$(EXE): LIBES = $(LIBES2)
 $(BIN)/$(PGM3)$(EXE): LIBES = $(LIBES3)
 
-$(OBJDIR)/mapcalc.yy.o: mapcalc.tab.h
+$(OBJDIR)/*.o: mapcalc.tab.META
+$(OBJDIR)/mapcalc.yy.o: mapcalc.tab.META
+
+mapcalc.tab.META: mapcalc.tab.c mapcalc.tab.h
+	touch mapcalc.tab.META
 
 .SECONDARY: mapcalc.tab.c mapcalc.tab.h mapcalc.output