build Win32 installer with gitlab-ci

call "make ziprelease" if needed

install/Makefile

@@ -0,0 +1,18 @@
+VERSIONTAG = ../obj/win32/versiontag
+VERSION := $(shell cat $(VERSIONTAG))
+
+SOURCES = ../src-$(VERSION).tgz
+INSTALLER = ../grafx2-$(VERSION).win32.exe
+
+all:	$(INSTALLER)
+
+$(INSTALLER):	WinInstaller.nsi $(SOURCES) $(VERSIONTAG)
+	sed 's/src-.*.tgz/src-$(VERSION).tgz/' $< | \
+	sed 's/VERSION .*/VERSION $(VERSION)/' > new_$<
+	makensis new_$<
+
+$(SOURCES):	../grafx2-$(VERSION)-win32.zip 
+	cd .. && unzip grafx2-$(VERSION)-win32.zip src-$(VERSION).tgz
+
+../grafx2-$(VERSION)-win32.zip:
+	cd ../src && WIN32CROSS=1 make ziprelease