From 1fda5afcc26243d704a5cbbe3f03e39bde723905 Mon Sep 17 00:00:00 2001
From: Jon Trulson <jon@radscan.com>
Date: Sun, 4 Jul 2021 18:07:10 -0600
Subject: [PATCH] dtappbuilder: try to fix a dep error causeing every make to
 rebuild

With the addition of dtappbuilder to autotools, every make run
(including make install) causes src/ab to regenerate files that cause
the whole directory to be recompiled, even on a 'make install'.

This seems to be primarily caused by dtbuilder.msg (and possibly
dtbuilder.c) being modified after it is generated, which is apparently
normal behavior for dtcodegen.

This fix sets both dtbuilder.msg and dtbuilder.c as "order-dependant
prequisites" so that they are always generated first (there are
already rules to do generate them) and then subsequently the only
thing required is that they exist since we don't care if they are
modified after that point.  If you need to make changes to them, edit
their respective .src files instead.

This seems to resolve the issue, but perhaps at the expense of adding
another requirement to use gmake.

We also need to disable parallel building in this module :(
---
 cde/programs/dtappbuilder/src/ab/Makefile.am | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/cde/programs/dtappbuilder/src/ab/Makefile.am b/cde/programs/dtappbuilder/src/ab/Makefile.am
index 316f06f08..bd279d40f 100644
--- a/cde/programs/dtappbuilder/src/ab/Makefile.am
+++ b/cde/programs/dtappbuilder/src/ab/Makefile.am
@@ -1,5 +1,7 @@
 MAINTAINERCLEANFILES = Makefile.in
 
+.NOTPARALLEL:
+
 appdefaultsdir = ${prefix}/app-defaults/C
 
 ABINCLUDES = -I../include -I../include/ab_private -I../libABil
@@ -306,7 +308,7 @@ textp_ui.c + textp_ui.h + textp_stubs.c: $(PROJFILE).bip textp.bil
 
 else
 
-dtbuilder.h dtb_utils.c dtb_utils.h: dtbuilder.bip dtbuilder.c dtbuilder.msg
+dtbuilder.h dtb_utils.c dtb_utils.h: dtbuilder.bip |dtbuilder.c dtbuilder.msg
 	$(DTCODEGEN) -changed -merge -p dtbuilder.bip -main
 
 PROJFILE = dtbuilder