+
−-*- mode: outline; coding: utf-8 -*-
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−
+
−* Remove dead code.
+
−
+
−  STRIP_DEAD_CODE = -Wl,-static -fvtable-gc -fdata-sections -ffunction-sections -Wl,--gc-sections -Wl,-s
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−
+
−  -Wl,-static
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−                Link against static libraries. Required for dead-code
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−                elimination.
+
−
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−  -fvtable-gc
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−                C++ virtual method table instrumented with garbage collection
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−                information for the linker.
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−
+
−  -fdata-sections
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−                Keeps data in separate data sections, so they can be discarded
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−                if unused.
+
−
+
−  -ffunction-sections
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−                Keeps funcitons in separate data sections, so they can be
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−                discarded if unused.
+
−
+
−  -Wl,--gc-sections
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−                Tell the linker to garbage collect and discard unused
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−                sections.
+
−
+
−  -s
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−                Strip the debug information, so as to make the code as small
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−                as possible. (I presume that you'd want to do this in a
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−                dead-code removal build.)
+
−
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−* Map file.
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−
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−  $ ld -Map=file.map <opts> <files>
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−
+
−or
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−
+
−  $ gcc -Wl,-Map=file.map <opts> <files>
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−
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−* Predefined macros.
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−
+
−  $ gcc -arch ppc -dM -E - < /dev/null | sort