package/libs/libjson-c/patches/000-libm.patch

   1 --- a/configure.ac
   2 +++ b/configure.ac
   3 @@ -76,12 +76,6 @@ AC_FUNC_VPRINTF
   4  AC_FUNC_MEMCMP
   5  AC_CHECK_FUNCS([realloc])
   6  AC_CHECK_FUNCS(strcasecmp strdup strerror snprintf vsnprintf vasprintf open vsyslog strncasecmp setlocale)
   7 -AC_CHECK_DECLS([INFINITY], [], [], [[#include <math.h>]])
   8 -AC_CHECK_DECLS([nan], [], [], [[#include <math.h>]])
   9 -AC_CHECK_DECLS([isnan], [], [], [[#include <math.h>]])
  10 -AC_CHECK_DECLS([isinf], [], [], [[#include <math.h>]])
  11 -AC_CHECK_DECLS([_isnan], [], [], [[#include <float.h>]])
  12 -AC_CHECK_DECLS([_finite], [], [], [[#include <float.h>]])
  13  AC_MSG_CHECKING(for GCC atomic builtins)
  14  AC_LINK_IFELSE(
  15  [
  16 --- a/math_compat.h
  17 +++ b/math_compat.h
  18 @@ -6,31 +6,9 @@
  19   * @brief Do not use, json-c internal, may be changed or removed at any time.
  20   */
  21
  22 -/* Define isnan, isinf, infinity and nan on Windows/MSVC */
  23 -
  24 -#ifndef HAVE_DECL_ISNAN
  25 -# ifdef HAVE_DECL__ISNAN
  26 -#include <float.h>
  27 -#define isnan(x) _isnan(x)
  28 -# endif
  29 -#endif
  30 -
  31 -#ifndef HAVE_DECL_ISINF
  32 -# ifdef HAVE_DECL__FINITE
  33 -#include <float.h>
  34 -#define isinf(x) (!_finite(x))
  35 -# endif
  36 -#endif
  37 -
  38 -#ifndef HAVE_DECL_INFINITY
  39 -#include <float.h>
  40 -#define INFINITY (DBL_MAX + DBL_MAX)
  41 -#define HAVE_DECL_INFINITY
  42 -#endif
  43 -
  44 -#ifndef HAVE_DECL_NAN
  45 -#define NAN (INFINITY - INFINITY)
  46 -#define HAVE_DECL_NAN
  47 -#endif
  48 +#undef isnan
  49 +#define isnan(x) __builtin_isnan(x)
  50 +#undef isinf
  51 +#define isinf(x) __builtin_isinf(x)
  52
  53  #endif