types.m4

mutt-1.5.12 源代码。linux 下邮件接受的工具。

dnl types.m4
dnl macros for type checks not covered by autoconf

dnl MUTT_C99_INTTYPES
dnl Brendan Cully
dnl
# MUTT_C99_INTTYPES
# Check for C99 integer type definitions, or define if missing
AC_DEFUN([MUTT_C99_INTTYPES],
[dnl
AC_CHECK_HEADERS([inttypes.h])
AC_CHECK_TYPE([uint32_t],
  [AC_DEFINE(HAVE_C99_INTTYPES, 1, [Define if you have the C99 integer types])],
  [AC_CHECK_SIZEOF(short)
   AC_CHECK_SIZEOF(int)
   AC_CHECK_SIZEOF(long)
   AC_CHECK_SIZEOF(long long)])
AH_VERBATIM([X_HAVE_C99_INTTYPES],
  [#ifndef HAVE_C99_INTTYPES
#  if SIZEOF_SHORT == 4
typedef unsigned short uint32_t;
#  elif SIZEOF_INT == 4
typedef unsigned int uint32_t;
#  elif SIZEOF_LONG == 4
typedef unsigned long uint32_t;
#  endif
#  if SIZEOF_INT == 8
typedef unsigned int uint64_t;
#  elif SIZEOF_LONG == 8
typedef unsigned long uint64_t;
#  elif SIZEOF_LONG_LONG == 8
typedef unsigned long long uint64_t;
#  endif
#endif
  ])
])