Began porting the mapping system

native/clang.ini

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+[binaries]
+c = 'clang'
+cpp = 'clang++'

native/gcc-libcxx.ini

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+# Linux GCC 16+ with libc++ development headers in the standard system location.
+# Layer after gcc.ini. Override this include path for a non-system LLVM install.
+[built-in options]
+cpp_args = ['-nostdinc++', '-isystem', '/usr/include/c++/v1']
+cpp_link_args = ['-nostdlib++', '-lc++', '-lc++abi']

native/gcc.ini

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+[binaries]
+c = 'gcc'
+cpp = 'g++'

native/ld.ini

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+[binaries]
+c_ld = 'bfd'
+cpp_ld = 'bfd'

native/libcxx.ini

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+# Layer after clang.ini. GCC does not support Clang's -stdlib option.
+[built-in options]
+cpp_args = ['-stdlib=libc++']
+cpp_link_args = ['-stdlib=libc++']

native/libstdcxx.ini

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+# Layer after clang.ini to explicitly select libstdc++.
+# GCC already uses libstdc++ by default and does not accept -stdlib.
+[built-in options]
+cpp_args = ['-stdlib=libstdc++']
+cpp_link_args = ['-stdlib=libstdc++']

native/lld.ini

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+[binaries]
+c_ld = 'lld'
+cpp_ld = 'lld'