diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/configure.in b/configure.in index 90628ab..a0d48a2 100644 --- a/configure.in +++ b/configure.in @@ -1228,6 +1228,31 @@ AC_MSG_RESULT(%${hdf5_cv_printf_ll}d and %${hdf5_cv_printf_ll}u) AC_DEFINE_UNQUOTED(PRINTF_LL_WIDTH,"$hdf5_cv_printf_ll") dnl ---------------------------------------------------------------------- +dnl Check if malloc(0) returns valid pointer +dnl +AC_MSG_CHECKING(if malloc of zero bytes returns valid pointer) +AC_CACHE_VAL(hdf5_cv_malloc_works, +AC_TRY_RUN([ +#if STDC_HEADERS +#include <stdlib.h> +#endif + +int main(void) +{ + exit(malloc (0) ? 0 : 1); +} + ], hdf5_cv_malloc_works=yes,hdf5_cv_malloc_works=no,) +) + +if test ${hdf5_cv_malloc_works} = "yes"; then + AC_DEFINE(MALLOC_WORKS, 1, + [Define if your system has a working `malloc' function.]) + AC_MSG_RESULT(yes) +else + AC_MSG_RESULT(no) +fi + +dnl ---------------------------------------------------------------------- dnl Turn on debugging by setting compiler flags dnl AC_MSG_CHECKING(for debug flags) |