From 98965b73f694cc6ab4aa12d85a15b6324a95eb40 Mon Sep 17 00:00:00 2001
From: Rob Emery <git@mintsoft.net>
Date: Thu, 22 Oct 2026 12:55:51 +0100
Subject: [PATCH] Fixes to BUILDDIR

---
 Makefile       | 6 +++---
 tools/Makefile | 4 +++-
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index aa31af35..54660495 100644
--- a/Makefile
+++ b/Makefile
@@ -139,7 +139,7 @@ HTML := $(shell find html -name '*.js' -or -name '*.html' -or -name '*.svg' -or
 # Minified copy of the web UI sources, used as the fileadder input.
 # The raw html/ sources stay untouched for development; the minified
 # copy is a build artifact under output/.
-HTML_MIN := output/html_min
+HTML_MIN := $(BUILDDIR)/html_min
 .PHONY: html_min
 html_min: $(HTML)
 	rm -rf $(HTML_MIN)
@@ -161,7 +161,7 @@ $(VERSION_HEADER): FORCE
 httpd: html_data.h
 
 $(SUBDIRS):
-	$(MAKE) -C $@
+	$(MAKE) -C $@ BUILDDIR=$(BUILDDIR)
 
 clean: $(SUBDIRSCLEAN)
 	-rm -f html_data.c html_data.h $(VERSION_HEADER)
@@ -204,7 +204,7 @@ $(BUILDDIR)/rtlplayground-$(FILENAME_EXTENSION).bin: $(BUILDDIR)/rtlplayground.i
 	tools/output/fileadder -a $(CONFIG_LOCATION) -s $(IMAGESIZE) -d config.txt $@
 	tools/output/fileadder -a $(HTML_LOCATION) -s $(IMAGESIZE) -z -d $(HTML_MIN) -b BANK1 $@
 	tools/output/crc_calculator -u $@
-	ln -sf $(MACHINE)/rtlplayground-$(FILENAME_EXTENSION).bin output/rtlplayground.bin
+	ln -sf $(MACHINE)/rtlplayground-$(FILENAME_EXTENSION).bin $(BUILDDIR)/../rtlplayground.bin
 
 .PHONY: clean distclean all $(SUBDIRS) $(SUBDIRSCLEAN) create_build_dir
 
diff --git a/tools/Makefile b/tools/Makefile
index 1b1c6685..80ac9743 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -1,6 +1,8 @@
 CC = gcc
 CCFLAGS = -Wall -o
-BUILDDIR = output
+ifndef BUILDDIR
+	BUILDDIR = output
+endif
 
 all: create_build_dir $(BUILDDIR)/injector $(BUILDDIR)/fileadder $(BUILDDIR)/httpd_sim\
 	$(BUILDDIR)/crc_calculator $(BUILDDIR)/imagebuilder