Avoid cl65 in tests.

cl65 creates intermediate files based on the source file name in the source file directory. Calling cl65 in parallel with the same source file causes those intermediate files to get overwritten.

Fixes #1080

test/todo/Makefile

@@ -10,14 +10,12 @@ ifdef CMD_EXE
   NULLDEV = nul:
   MKDIR = mkdir $(subst /,\,$1)
   RMDIR = -rmdir /s /q $(subst /,\,$1)
-  DEL = del /f $(subst /,\,$1)
 else
   S = /
   NOT = !
   NULLDEV = /dev/null
   MKDIR = mkdir -p $1
   RMDIR = $(RM) -r $1
-  DEL = $(RM) $1
 endif
 
 ifdef QUIET
@@ -28,7 +26,9 @@ endif
 
 SIM65FLAGS = -x 200000000
 
-CL65 := $(if $(wildcard ../../bin/cl65*),..$S..$Sbin$Scl65,cl65)
+CC65 := $(if $(wildcard ../../bin/cc65*),..$S..$Sbin$Scc65,cc65)
+CA65 := $(if $(wildcard ../../bin/ca65*),..$S..$Sbin$Sca65,ca65)
+LD65 := $(if $(wildcard ../../bin/ld65*),..$S..$Sbin$Sld65,ld65)
 SIM65 := $(if $(wildcard ../../bin/sim65*),..$S..$Sbin$Ssim65,sim65)
 
 WORKDIR = ../../testwrk/val
@@ -50,7 +50,9 @@ define PRG_template
 
 $(WORKDIR)/%.$1.$2.prg: %.c | $(WORKDIR)
 	$(if $(QUIET),echo val/$$*.$1.$2.prg)
-	$(CL65) -t sim$2 $$(CC65FLAGS) -$1 -o $$@ $$< $(NULLERR)
+	$(CC65) -t sim$2 $$(CC65FLAGS) -$1 -o $$(@:.prg=.s) $$< $(NULLERR)
+	$(CA65) -t sim$2 -o $$(@:.prg=.o) $$(@:.prg=.s) $(NULLERR)
+	$(LD65) -t sim$2 -o $$@ $$(@:.prg=.o) sim$2.lib $(NULLERR)
 	$(NOT) $(SIM65) $(SIM65FLAGS) $$@ $(NULLOUT)
 
 endef # PRG_template
@@ -60,4 +62,3 @@ $(foreach option,$(OPTIONS),$(eval $(call PRG_template,$(option),65c02)))
 
 clean:
 	@$(call RMDIR,$(WORKDIR))
-	@$(call DEL,$(SOURCES:.c=.o))