lowell@ubuntu:/usr/src$ clang --version clang version 3.1 (trunk 152539) Target: x86_64-unknown-linux-gnu Thread model: posix lowell@ubuntu:/usr/src$ lowell@ubuntu:/usr/src$ lowell@ubuntu:/usr/src$ lowell@ubuntu:/usr/src$ lowell@ubuntu:/usr/src$ lowell@ubuntu:/usr/src$ ll ll llvm-cov llvm-mc llvm-size llc llvm-diff llvm-nm llvm-stress lli llvm-dis llvm-objdump llvm-stub llvm-ar llvm-dwarfdump llvm-prof llvm-tblgen llvm-as llvm-extract llvm-ranlib llvm-bcanalyzer llvm-ld llvm-readobj llvm-config llvm-link llvm-rtdyld lowell@ubuntu:/usr/src$ lowell@ubuntu:/usr/src$ lowell@ubuntu:/usr/src$ lowell@ubuntu:/usr/src$ lowell@ubuntu:/usr/src$ lowell@ubuntu:/usr/src$ clang -arch x86_64 -dM -E - < /dev/null | sort clang: warning: argument unused during compilation: '-arch x86_64' #define __amd64 1 #define __amd64__ 1 #define __ATOMIC_ACQ_REL 4 #define __ATOMIC_ACQUIRE 2 #define __ATOMIC_CONSUME 1 #define __ATOMIC_RELAXED 0 #define __ATOMIC_RELEASE 3 #define __ATOMIC_SEQ_CST 5 #define __CHAR16_TYPE__ unsigned short #define __CHAR32_TYPE__ unsigned int #define __CHAR_BIT__ 8 #define __clang__ 1 #define __clang_major__ 3 #define __clang_minor__ 1 #define __clang_patchlevel__ 0 #define __clang_version__ "3.1 ((trunk 152539))" #define __CONSTANT_CFSTRINGS__ 1 #define __DBL_DENORM_MIN__ 4.9406564584124654e-324 #define __DBL_DIG__ 15 #define __DBL_EPSILON__ 2.2204460492503131e-16 #define __DBL_HAS_DENORM__ 1 #define __DBL_HAS_INFINITY__ 1 #define __DBL_HAS_QUIET_NAN__ 1 #define __DBL_MANT_DIG__ 53 #define __DBL_MAX_10_EXP__ 308 #define __DBL_MAX__ 1.7976931348623157e+308 #define __DBL_MAX_EXP__ 1024 #define __DBL_MIN_10_EXP__ (-307) #define __DBL_MIN__ 2.2250738585072014e-308 #define __DBL_MIN_EXP__ (-1021) #define __DECIMAL_DIG__ 21 #define __ELF__ 1 #define __FINITE_MATH_ONLY__ 0 #define __FLT_DENORM_MIN__ 1.40129846e-45F #define __FLT_DIG__ 6 #define __FLT_EPSILON__ 1.19209290e-7F #define __FLT_EVAL_METHOD__ 0 #define __FLT_HAS_DENORM__ 1 #define __FLT_HAS_INFINITY__ 1 #define __FLT_HAS_QUIET_NAN__ 1 #define __FLT_MANT_DIG__ 24 #define __FLT_MAX_10_EXP__ 38 #define __FLT_MAX__ 3.40282347e+38F #define __FLT_MAX_EXP__ 128 #define __FLT_MIN_10_EXP__ (-37) #define __FLT_MIN__ 1.17549435e-38F #define __FLT_MIN_EXP__ (-125) #define __FLT_RADIX__ 2 #define __GNUC__ 4 #define __GNUC_MINOR__ 2 #define __GNUC_PATCHLEVEL__ 1 #define __GNUC_STDC_INLINE__ 1 #define __gnu_linux__ 1 #define __GXX_ABI_VERSION 1002 #define __GXX_RTTI 1 #define __INT16_TYPE__ short #define __INT32_TYPE__ int #define __INT64_C_SUFFIX__ L #define __INT64_TYPE__ long int #define __INT8_TYPE__ char #define __INT_MAX__ 2147483647 #define __INTMAX_MAX__ 9223372036854775807L #define __INTMAX_TYPE__ long int #define __INTMAX_WIDTH__ 64 #define __INTPTR_TYPE__ long int #define __INTPTR_WIDTH__ 64 #define __k8 1 #define __k8__ 1 #define __LDBL_DENORM_MIN__ 3.64519953188247460253e-4951L #define __LDBL_DIG__ 18 #define __LDBL_EPSILON__ 1.08420217248550443401e-19L #define __LDBL_HAS_DENORM__ 1 #define __LDBL_HAS_INFINITY__ 1 #define __LDBL_HAS_QUIET_NAN__ 1 #define __LDBL_MANT_DIG__ 64 #define __LDBL_MAX_10_EXP__ 4932 #define __LDBL_MAX__ 1.18973149535723176502e+4932L #define __LDBL_MAX_EXP__ 16384 #define __LDBL_MIN_10_EXP__ (-4931) #define __LDBL_MIN__ 3.36210314311209350626e-4932L #define __LDBL_MIN_EXP__ (-16381) #define __linux 1 #define __linux__ 1 #define linux 1 #define __LITTLE_ENDIAN__ 1 #define __llvm__ 1 #define __LONG_LONG_MAX__ 9223372036854775807LL #define __LONG_MAX__ 9223372036854775807L #define __LP64__ 1 #define _LP64 1 #define __MMX__ 1 #define __NO_INLINE__ 1 #define __NO_MATH_INLINES 1 #define __POINTER_WIDTH__ 64 #define __PRAGMA_REDEFINE_EXTNAME 1 #define __PTRDIFF_TYPE__ long int #define __PTRDIFF_WIDTH__ 64 #define __REGISTER_PREFIX__ #define __SCHAR_MAX__ 127 #define __SHRT_MAX__ 32767 #define __SIG_ATOMIC_WIDTH__ 32 #define __SIZEOF_DOUBLE__ 8 #define __SIZEOF_FLOAT__ 4 #define __SIZEOF_INT__ 4 #define __SIZEOF_LONG__ 8 #define __SIZEOF_LONG_DOUBLE__ 16 #define __SIZEOF_LONG_LONG__ 8 #define __SIZEOF_POINTER__ 8 #define __SIZEOF_PTRDIFF_T__ 8 #define __SIZEOF_SHORT__ 2 #define __SIZEOF_SIZE_T__ 8 #define __SIZEOF_WCHAR_T__ 4 #define __SIZEOF_WINT_T__ 4 #define __SIZE_TYPE__ long unsigned int #define __SIZE_WIDTH__ 64 #define __SSE__ 1 #define __SSE2__ 1 #define __SSE2_MATH__ 1 #define __SSE_MATH__ 1 #define __STDC__ 1 #define __STDC_HOSTED__ 1 #define __STDC_VERSION__ 199901L #define __tune_k8__ 1 #define __UINTMAX_TYPE__ long unsigned int #define __unix 1 #define __unix__ 1 #define unix 1 #define __USER_LABEL_PREFIX__ #define __VERSION__ "4.2.1 Compatible Clang 3.1 ((trunk 152539))" #define __WCHAR_MAX__ 2147483647 #define __WCHAR_TYPE__ int #define __WCHAR_WIDTH__ 32 #define __WINT_TYPE__ unsigned int #define __WINT_UNSIGNED__ 1 #define __WINT_WIDTH__ 32 #define __x86_64 1 #define __x86_64__ 1 lowell@ubuntu:/usr/src$