unix: Fix Makefile to handle gc-sections linker flags on Mac OS.
The linker flag --gc-sections is not available on the linker used on Mac OS X which results in an error when linking micropython on Mac OS X. Therefore move this option to the LDFLAGS_ARCH variable on non Darwin systems. According to http://stackoverflow.com/a/17710056 the equivalent to --gc-sections is -dead_strip thus this option is used for the LDFLAGS_ARCH on Darwin systems.
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@ -63,12 +63,12 @@ endif
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ifeq ($(UNAME_S),Darwin)
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CC = clang
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# Use clang syntax for map file
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LDFLAGS_ARCH = -Wl,-map,$@.map
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LDFLAGS_ARCH = -Wl,-map,$@.map -Wl,-dead_strip
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else
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# Use gcc syntax for map file
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LDFLAGS_ARCH = -Wl,-Map=$@.map,--cref
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LDFLAGS_ARCH = -Wl,-Map=$@.map,--cref -Wl,--gc-sections
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endif
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LDFLAGS = $(LDFLAGS_MOD) $(LDFLAGS_ARCH) -lm $(LDFLAGS_EXTRA) -Wl,--gc-sections
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LDFLAGS = $(LDFLAGS_MOD) $(LDFLAGS_ARCH) -lm $(LDFLAGS_EXTRA)
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ifeq ($(MICROPY_FORCE_32BIT),1)
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# Note: you may need to install i386 versions of dependency packages,
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