git.m6w6.name Git - m6w6/ext-psi/blob - m4/posix/stddef.m4

   1 PSI_CHECK_STDDEF() {
   2     dnl Though, autoconf manual says "This macro is obsolescent, as current systems
   3     dnl have conforming header files. New programs need not use this macro.", in fact
   4     dnl AC_INCLUDES_DEFAULT still relies on STDC_HEADERS
   5     AC_HEADER_STDC
   6
   7     AC_CHECK_HEADERS(stddef.h)
   8
   9     PSI_TYPE(ptrdiff_t, int)
  10     PSI_CONST(PTRDIFF_MIN, int)
  11     PSI_CONST(PTRDIFF_MAX, int)
  12     PSI_TYPE(size_t, uint)
  13     PSI_CONST(SIZE_MAX, int)
  14     PSI_TYPE(wchar_t, int)
  15     if PSI_SH_TEST_SIZEOF(wchar_t); then :; else
  16         # some platforms fail to provide wchar_t in stddef.h
  17         unset ac_cv_sizeof_wchar_t
  18         unset ax_cv_decl_wchar_t_signed
  19         AC_CHECK_HEADERS(wchar.h)
  20         PSI_TYPE(wchar_t, int)
  21     fi
  22     PSI_CONST(WCHAR_MIN, int)
  23     PSI_CONST(WCHAR_MAX, int)
  24 }