-ifneq "$(RELEASE)" "" set Ifilename putty-$(RELEASE)-installer
-ifneq "$(PRERELEASE)" "" set Ifilename putty-$(PRERELEASE)-pre$(Ndate)-installer
-ifneq "$(SNAPSHOT)" "" set Ifilename putty-$(Date)-installer
-ifeq "$(RELEASE)$(PRERELEASE)$(SNAPSHOT)" "" set Ifilename putty-custom-$(Date)-installer
+ifneq "$(RELEASE)" "" set Isuffix $(RELEASE)-installer
+ifneq "$(PRERELEASE)" "" set Isuffix $(PRERELEASE)-pre$(Ndate)-installer
+ifneq "$(SNAPSHOT)" "" set Isuffix $(Date)-installer
+ifeq "$(RELEASE)$(PRERELEASE)$(SNAPSHOT)" "" set Isuffix custom-$(Date)-installer
+set Ifilename32 putty-$(Isuffix)
+set Ifilename64 putty-64bit-$(Isuffix)