diff options
Diffstat (limited to 'm4/intmax_t.m4')
| -rw-r--r-- | m4/intmax_t.m4 | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/m4/intmax_t.m4 b/m4/intmax_t.m4 new file mode 100644 index 0000000..b9cb27f --- /dev/null +++ b/m4/intmax_t.m4 @@ -0,0 +1,40 @@ +#serial 6 + +dnl From Paul Eggert. + +AC_PREREQ(2.52) + +# Define intmax_t to long or long long if <inttypes.h> doesn't define. + +AC_DEFUN([gl_AC_TYPE_INTMAX_T], +[ + dnl For simplicity, we assume that a header file defines 'intmax_t' if and + dnl only if it defines 'uintmax_t'. + AC_REQUIRE([gl_AC_HEADER_INTTYPES_H]) + AC_REQUIRE([gl_AC_HEADER_STDINT_H]) + if test $gl_cv_header_inttypes_h = no && test $gl_cv_header_stdint_h = no; then + AC_REQUIRE([gl_AC_TYPE_LONG_LONG]) + test $ac_cv_type_long_long = yes \ + && ac_type='long long' \ + || ac_type='long' + AC_DEFINE_UNQUOTED(intmax_t, $ac_type, + [Define to long or long long if <inttypes.h> and <stdint.h> don't define.]) + else + AC_DEFINE(HAVE_INTMAX_T, 1, + [Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>.]) + fi +]) + +# Define uintmax_t to unsigned long or unsigned long long +# if <inttypes.h> doesn't define. + +AC_DEFUN([jm_AC_TYPE_UINTMAX_T], +[ + AC_REQUIRE([jm_AC_TYPE_UNSIGNED_LONG_LONG]) + AC_CHECK_TYPE(uintmax_t, , + [test $ac_cv_type_unsigned_long_long = yes \ + && ac_type='unsigned long long' \ + || ac_type='unsigned long' + AC_DEFINE_UNQUOTED(uintmax_t, $ac_type, + [Define to widest unsigned type if <inttypes.h> doesn't define.])]) +]) |