diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/configure.in b/configure.in index b4f36af..676fcdc 100644 --- a/configure.in +++ b/configure.in @@ -204,6 +204,28 @@ AC_TRY_COMPILE(,[int f(void){return __FUNCTION__;}], AC_MSG_RESULT(no)) dnl ---------------------------------------------------------------------- +dnl Try to figure out how to print `long long'. Some machines use `%lld' +dnl and others use `%qd'. There may be more! The final `l' is a +dnl default in case none of the others work. +dnl +AC_MSG_CHECKING(how to print long long); +AC_CACHE_VAL(hdf5_cv_printf_ll, + for hdf5_cv_printf_ll in ll q l; do + AC_TRY_RUN([ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + main() {char *s=malloc(128); + long long x = (long long)1048576 * (long long)1048576; + sprintf(s,"%${hdf5_cv_printf_ll}d",x); + exit (strcmp(s,"1099511627776"));}], + break) + done) +AC_MSG_RESULT($hdf5_cv_printf_ll) +AC_DEFINE_UNQUOTED(PRINTF_LL_WIDTH,"$hdf5_cv_printf_ll") + + +dnl ---------------------------------------------------------------------- dnl Turn on debugging by setting compiler flags dnl AC_MSG_CHECKING(for debug flags); |