diff options
Diffstat (limited to 'unix/tcl.m4')
| -rw-r--r-- | unix/tcl.m4 | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/unix/tcl.m4 b/unix/tcl.m4 index c476bb3..63748e1 100644 --- a/unix/tcl.m4 +++ b/unix/tcl.m4 @@ -2383,11 +2383,16 @@ AC_DEFUN(SC_TCL_EARLY_FLAGS,[ AC_DEFUN(SC_TCL_64BIT_FLAGS, [ AC_MSG_CHECKING([for 64-bit integer type]) AC_CACHE_VAL(tcl_cv_type_64bit,[ + tcl_cv_type_64bit=none + # See if the compiler knows natively about __int64 AC_TRY_COMPILE(,[__int64 value = (__int64) 0;], - tcl_cv_type_64bit=__int64,tcl_cv_type_64bit=none - AC_TRY_RUN([#include <unistd.h> - int main() {exit(!(sizeof(long long) > sizeof(long)));} - ], tcl_cv_type_64bit="long long"))]) + tcl_type_64bit=__int64, tcl_type_64bit="long long") + # See if we should use long anyway Note that we substitute in the + # type that is our current guess for a 64-bit type inside this check + # program, so it should be modified only carefully... + AC_TRY_RUN([#include <unistd.h> + int main() {exit(!(sizeof(]${tcl_type_64bit}[) > sizeof(long)));} + ], tcl_cv_type_64bit=${tcl_type_64bit},:,:)]) if test "${tcl_cv_type_64bit}" = none ; then AC_DEFINE(TCL_WIDE_INT_IS_LONG) AC_MSG_RESULT(using long) |