Backed out the previous checkin, which broke our NT nightly build. It seems

that USE_CYGWIN is set (to some strange value) under MKS shell.

security/coreconf/rules.mk

@@ -380,29 +380,17 @@ WCCFLAGS1 := $(subst /,\\,$(CFLAGS))
 WCCFLAGS2 := $(subst -I,-i=,$(WCCFLAGS1))
 WCCFLAGS3 := $(subst -D,-d,$(WCCFLAGS2))
 
-ifeq (,$(filter-out WIN%,$(OS_TARGET)))
-USE_CYGWIN := $(if $(findstring ;,$(PATH)),,1))
-endif
-
 $(OBJDIR)/$(PROG_PREFIX)%$(OBJ_SUFFIX): %.c
 	@$(MAKE_OBJDIR)
 ifdef USE_NT_C_SYNTAX
-ifdef USE_CYGWIN
-	$(CC) -Fo$@ -c $(CFLAGS) $(if $(findstring :,$<),$<,$(shell cygpath -a -w $<))
-else
-	$(CC) -Fo$@ -c $(CFLAGS) $(if $(findstring :,$<),$<,$(shell pwd)/$<)
-endif
+	$(CC) -Fo$@ -c $(CFLAGS) $<
 else
 	$(CC) -o $@ -c $(CFLAGS) $<
 endif
 
 $(PROG_PREFIX)%$(OBJ_SUFFIX): %.c
 ifdef USE_NT_C_SYNTAX
-ifdef USE_CYGWIN
-	$(CC) -Fo$@ -c $(CFLAGS) $(if $(findstring :,$<),$<,$(shell cygpath -a -w $<))
-else
-	$(CC) -Fo$@ -c $(CFLAGS) $(if $(findstring :,$<),$<,$(shell pwd)/$<)
-endif
+	$(CC) -Fo$@ -c $(CFLAGS) $<
 else
 	$(CC) -o $@ -c $(CFLAGS) $<
 endif
@@ -430,11 +418,7 @@ $(OBJDIR)/$(PROG_PREFIX)%$(OBJ_SUFFIX): %.S
 $(OBJDIR)/$(PROG_PREFIX)%: %.cpp
 	@$(MAKE_OBJDIR)
 ifdef USE_NT_C_SYNTAX
-ifdef USE_CYGWIN
-	$(CCC) -Fo$@ -c $(CFLAGS) $(if $(findstring :,$<),$<,$(shell cygpath -a -w $<))
-else
-	$(CCC) -Fo$@ -c $(CFLAGS) $(if $(findstring :,$<),$<,$(shell pwd)/$<)
-endif
+	$(CCC) -Fo$@ -c $(CFLAGS) $<
 else
 	$(CCC) -o $@ -c $(CFLAGS) $<
 endif
@@ -454,11 +438,7 @@ ifdef STRICT_CPLUSPLUS_SUFFIX
 	rm -f $(OBJDIR)/t_$*.cc
 else
 ifdef USE_NT_C_SYNTAX
-ifdef USE_CYGWIN
-	$(CCC) -Fo$@ -c $(CFLAGS) $(if $(findstring :,$<),$<,$(shell cygpath -a -w $<))
-else
-	$(CCC) -Fo$@ -c $(CFLAGS) $(if $(findstring :,$<),$<,$(shell pwd)/$<)
-endif
+	$(CCC) -Fo$@ -c $(CFLAGS) $<
 else
 	$(CCC) -o $@ -c $(CFLAGS) $<
 endif