ucl: Replace use of uname by checking the compiler output.

Similar as done for libtools.make ask the compiler for the binary it creates
instead of using uname to figure the target to avoid special handling when
cross compiling.

Change-Id: Icb4654616e4339bf9e6e3be5177b35e0bb313bcd

tools/ucl/src/Makefile

@@ -22,20 +22,32 @@ ifdef RBARCH
 CFLAGS += -arch $(RBARCH)
 endif
 
+CPPDEFINES := $(shell echo foo | $(CROSS)$(CC) -dM -E -)
+#build standalone win32 executables on cygwin
+ifeq ($(findstring CYGWIN,$(CPPDEFINES)),CYGWIN)
+COMPILETARGET = cygwin
+else
+ifeq ($(findstring MINGW,$(CPPDEFINES)),MINGW)
+COMPILETARGET = mingw
+else
 # OS X specifics. Needs to consider cross compiling for Windows.
-ifeq ($(findstring Darwin,$(shell uname)),Darwin)
-ifneq ($(findstring mingw,$(CROSS)$(CC)),mingw)
+ifeq ($(findstring APPLE,$(CPPDEFINES)),APPLE)
 # when building libs for OS X build for both i386 and ppc at the same time.
 # This creates fat objects, and ar can only create the archive but not operate
 # on it. As a result the ar call must NOT use the u (update) flag.
-CFLAGS += -arch ppc -arch i386
+ARCHFLAGS = -arch ppc -arch i386
 # building against SDK 10.4 is not compatible with gcc-4.2 (default on newer Xcode)
 # might need adjustment for older Xcode.
 CC ?= gcc-4.0
 CFLAGS += -isysroot /Developer/SDKs/MacOSX10.4u.sdk -mmacosx-version-min=10.4
 NATIVECC ?= gcc-4.0
+COMPILETARGET = darwin
+else
+COMPILETARGET = posix
 endif
 endif
+endif
+$(info Compiler creates $(COMPILETARGET) binaries)
 
 TARGET_DIR ?= $(shell pwd)/
 OBJDIR = $(TARGET_DIR)build$(RBARCH)
@@ -60,13 +72,12 @@ $(TARGET_DIR)ucl.dll: $(OBJS)
 
 $(TARGET_DIR)libucl$(RBARCH).a: $(OBJS)
 	@echo AR $(notdir $@)
-	$(SILENT)rm -f $@
 	$(SILENT)$(CROSS)$(AR) rcs $@ $(OBJS) >/dev/null 2>&1
 
 $(OBJDIR)/%.o: %.c
 	@echo CC $<
 	$(SILENT)$(call mkdir, $(dir $@))
-	$(SILENT)$(CROSS)$(CC) $(CFLAGS) -c $< -o $@
+	$(SILENT)$(CROSS)$(CC) $(CFLAGS) $(ARCHFLAGS) -c $< -o $@
 
 clean:
 	rm -f $(TARGET_DIR)libucl*.a