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jeremybenn |
/* Copyright (C) 2003, 2004, 2005, 2006, 2009, 2011, 2012
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Free Software Foundation.
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Define macros useful in tests for bulitin functions. */
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/* Define HAVE_C99_RUNTIME if the entire C99 runtime is available on
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the target system. The value of HAVE_C99_RUNTIME should be the
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same as the value of TARGET_C99_FUNCTIONS in the GCC machine
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description. (Perhaps GCC should predefine a special macro
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indicating whether or not TARGET_C99_FUNCTIONS is set, but it does
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not presently do that.) */
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#if defined(__hppa) && defined(__hpux)
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/* PA HP-UX doesn't have the entire C99 runtime. */
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#elif defined(__INTERIX)
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/* Interix6 doesn't have the entire C99 runtime. */
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#elif defined(__AVR__)
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/* AVR doesn't have the entire C99 runtime. */
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#elif defined(__FreeBSD__) && (__FreeBSD__ < 9)
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/* FreeBSD up to version 8 lacks support for cexp and friends. */
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#elif defined(__vxworks)
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/* VxWorks doesn't have a full C99 time. (cabs is missing, for example.) */
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#elif defined(_WIN32) && !defined(__CYGWIN__)
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/* Windows doesn't have the entire C99 runtime. */
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#elif (defined(__APPLE__) && defined(__ppc__) \
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&& ! defined (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__))
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/* MacOS versions before 10.3 don't have many C99 functions.
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But, if you're including this file, you probably want to test the
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newer behaviour, so: */
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#error forgot to set -mmacosx-version-min.
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#elif (defined(__APPLE__) && defined(__ppc__) \
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&& __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1030)
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/* MacOS versions before 10.3 don't have many C99 functions. */
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#else
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/* Newlib has the "f" variants of the math functions, but not the "l"
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variants. TARGET_C99_FUNCTIONS is only defined if all C99
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functions are present. Therefore, on systems using newlib, tests
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of builtins will fail the "l" variants, and we should therefore not
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define HAVE_C99_RUNTIME. Including <sys/types.h> gives us a way of
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seeing if _NEWLIB_VERSION is defined. Including <math.h> would work
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too, but the GLIBC math inlines cause us to generate inferior code,
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which causes the test to fail, so it is not safe. Including <limits.h>
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also fails because the include search paths are ordered such that GCC's
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version will be found before the newlib version. Similarly, uClibc
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lacks the C99 functions. */
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#include <sys/types.h>
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#if defined(_NEWLIB_VERSION) || defined(__UCLIBC__)
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#elif defined(__sun) && __STDC_VERSION__ - 0 < 199901L
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/* If you're including this file, you probably want to test the newer
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behaviour, so ensure the right flags were used for each test: */
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#error forgot to set -std=c99.
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#elif defined(__sun) && ! defined (_STDC_C99)
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/* Solaris up to 9 doesn't have the entire C99 runtime.
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Solaris 10 defines _STDC_C99 if __STDC_VERSION__ is >= 199901L.
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This macro is defined in <sys/feature_tests.h> which is included by
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various system headers, in this case <sys/types.h> above. */
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#else
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#define HAVE_C99_RUNTIME
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#endif
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#endif
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