git://gcc.gnu.org / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 9e15ef05 DL |
1 | dnl Check: |
| 2 | dnl * If we have gettimeofday; | |
| 3 | dnl * If we have struct timezone for use in calling it; | |
| 4 | dnl * If calling it with a timezone pointer actually works -- this is deemed | |
| 5 | dnl obsolete or undefined on some systems which say you should use a null | |
| 6 | dnl pointer -- and undefine HAVE_TIMEZONE if so; | |
| 7 | dnl * Whether it only takes one arg. | |
| 8 | AC_DEFUN(LIBU77_GETTIMEOFDAY, [ | |
| 9 | AC_CHECK_FUNCS(gettimeofday) | |
| 10 | if test "$ac_cv_func_gettimeofday" = yes; then | |
| 11 | AC_CACHE_CHECK([for struct timezone], g77_cv_struct_timezone, | |
| 12 | [AC_TRY_COMPILE([#include <sys/time.h>], | |
| 13 | [struct timezone tz;], | |
| 14 | g77_cv_struct_timezone=yes, g77_cv_struct_timezone=no)]) | |
| 15 | if test $g77_cv_struct_timezone = yes; then | |
| 16 | dnl It may be that we can't call gettimeofday with a non-null pointer. | |
| 17 | dnl In that case we'll lie about struct timezone. | |
| 18 | AC_TRY_RUN([ | |
| 19 | #ifdef TIME_WITH_SYS_TIME | |
| 20 | #include <sys/time.h> | |
| 21 | #include <time.h> | |
| 22 | #else | |
| 23 | #ifdef HAVE_SYS_TIME_H | |
| 24 | #include <sys/time.h> | |
| 25 | #else | |
| 26 | #include <time.h> | |
| 27 | #endif | |
| 28 | #endif | |
| 29 | main () | |
| 30 | { | |
| 31 | struct timeval time; | |
| 32 | struct timezone dummy; | |
| 33 | if (gettimeofday (&time, &dummy)) | |
| 34 | exit (1); | |
| 35 | else | |
| 36 | exit (0); | |
| 37 | }], | |
| 38 | [AC_DEFINE(HAVE_TIMEZONE)], ,[AC_DEFINE(HAVE_TIMEZONE)]) | |
| 39 | fi | |
| 40 | AC_REQUIRE([AC_HEADER_TIME]) | |
| 41 | AC_CACHE_CHECK(whether gettimeofday can accept two arguments, | |
| 42 | emacs_cv_gettimeofday_two_arguments, | |
| 43 | AC_TRY_LINK([ | |
| 44 | #ifdef TIME_WITH_SYS_TIME | |
| 45 | #include <sys/time.h> | |
| 46 | #include <time.h> | |
| 47 | #else | |
| 48 | #ifdef HAVE_SYS_TIME_H | |
| 49 | #include <sys/time.h> | |
| 50 | #else | |
| 51 | #include <time.h> | |
| 52 | #endif | |
| 53 | #endif | |
| 54 | ], | |
| 55 | [ | |
| 56 | struct timeval time; | |
| 57 | struct timezone dummy; | |
| 58 | gettimeofday (&time, &dummy);], | |
| 59 | emacs_cv_gettimeofday_two_arguments=yes, | |
| 60 | emacs_cv_gettimeofday_two_arguments=no)) | |
| 61 | if test $emacs_cv_gettimeofday_two_arguments = no; then | |
| 62 | AC_DEFINE(GETTIMEOFDAY_ONE_ARGUMENT) | |
| 63 | fi | |
| 64 | fi]) |