autoconf/m4/single_cxx_check.m4

   1 dnl AC_SINGLE_CXX_CHECK(DEFINEVAR, CACHEVAR, FUNCTION, HEADER, PROGRAM)
   2 dnl                     $1,        $2,       $3,       $4,     $5
   3 dnl
   4 AC_DEFUN([AC_SINGLE_CXX_CHECK],
   5 [AC_CACHE_CHECK([for $3 in $4], [$2],
   6  [AC_LANG_PUSH(C++)
   7   AC_COMPILE_IFELSE(AC_LANG_SOURCE([$5]),[$2=yes],[$2=no])
   8  AC_LANG_POP(C++)])
   9  if test "$$2" = "yes"
  10  then
  11    AC_DEFINE($1, 1, [Define to 1 if your compiler defines $3 in the $4
  12                      header file.])
  13  fi])
  14
  15 AC_DEFUN([AC_FUNC_ISNAN],[
  16 AC_SINGLE_CXX_CHECK([HAVE_ISNAN_IN_MATH_H],    [ac_cv_func_isnan_in_math_h],
  17                     [isnan], [<math.h>],
  18                     [#include <math.h>
  19                      int foo(float f) {return isnan(f);}])
  20 AC_SINGLE_CXX_CHECK([HAVE_ISNAN_IN_CMATH],     [ac_cv_func_isnan_in_cmath],
  21                     [isnan], [<cmath>],
  22                     [#include <cmath>
  23                      int foo(float f) {return isnan(f);}])
  24 AC_SINGLE_CXX_CHECK([HAVE_STD_ISNAN_IN_CMATH], [ac_cv_func_std_isnan_in_cmath],
  25                     [std::isnan], [<cmath>],
  26                     [#include <cmath>
  27                      using std::isnan; int foo(float f) {return isnan(f);}])
  28 ])
  29
  30 AC_DEFUN([AC_FUNC_ISINF],[
  31 AC_SINGLE_CXX_CHECK([HAVE_ISINF_IN_MATH_H],    [ac_cv_func_isinf_in_math_h],
  32                     [isinf], [<math.h>],
  33                     [#include <math.h>
  34                      int foo(float f) {return isinf(f);}])
  35 AC_SINGLE_CXX_CHECK([HAVE_ISINF_IN_CMATH],     [ac_cv_func_isinf_in_cmath],
  36                     [isinf], [<cmath>],
  37                     [#include <cmath>
  38                      int foo(float f) {return isinf(f);}])
  39 AC_SINGLE_CXX_CHECK([HAVE_STD_ISINF_IN_CMATH], [ac_cv_func_std_isinf_in_cmath],
  40                     [std::isinf], [<cmath>],
  41                     [#include <cmath>
  42                      using std::isinf; int foo(float f) {return isinf(f);}])
  43 AC_SINGLE_CXX_CHECK([HAVE_FINITE_IN_IEEEFP_H], [ac_cv_func_finite_in_ieeefp_h],
  44                     [finite], [<ieeefp.h>],
  45                     [#include <ieeefp.h>
  46                      int foo(float f) {return finite(f);}])
  47 ])
  48