diff options
| author | Jörg Frings-Fürst <debian@jff-webhosting.net> | 2017-12-02 10:30:51 +0100 |
|---|---|---|
| committer | Jörg Frings-Fürst <debian@jff-webhosting.net> | 2017-12-02 10:30:51 +0100 |
| commit | fd167a99e31b7021c78972c09acbf83b2d347c98 (patch) | |
| tree | ca8ccd8fed78f99dd13ea6ab5069431983dac7b9 /gnulib-m4/usleep.m4 | |
| parent | 4d76768442551c97a85e6f133cb818d223012746 (diff) | |
| parent | 44a3eaeba04ef78835ca741592c376428ada5f71 (diff) | |
Update upstream source from tag 'upstream/0.9.8'
Update to upstream version '0.9.8'
with Debian dir bac53b09be895fe7915b59f95882628bcc7b606e
Diffstat (limited to 'gnulib-m4/usleep.m4')
| -rw-r--r-- | gnulib-m4/usleep.m4 | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/gnulib-m4/usleep.m4 b/gnulib-m4/usleep.m4 new file mode 100644 index 0000000..e69ed85 --- /dev/null +++ b/gnulib-m4/usleep.m4 @@ -0,0 +1,47 @@ +# usleep.m4 serial 4 +dnl Copyright (C) 2009-2017 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +dnl This macro intentionally does not check for select or nanosleep; +dnl both of those modules can require external libraries. +AC_DEFUN([gl_FUNC_USLEEP], +[ + AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) + dnl usleep was required in POSIX 2001, but dropped as obsolete in + dnl POSIX 2008; therefore, it is not always exposed in headers. + AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) + AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles + AC_CHECK_FUNCS_ONCE([usleep]) + AC_CHECK_TYPE([useconds_t], [], + [AC_DEFINE([useconds_t], [unsigned int], [Define to an unsigned 32-bit + type if <sys/types.h> lacks this type.])]) + if test $ac_cv_func_usleep = no; then + HAVE_USLEEP=0 + else + dnl POSIX allows implementations to reject arguments larger than + dnl 999999, but GNU guarantees it will work. + AC_CACHE_CHECK([whether usleep allows large arguments], + [gl_cv_func_usleep_works], + [AC_RUN_IFELSE([AC_LANG_PROGRAM([[ +#include <unistd.h> +]], [[return !!usleep (1000000);]])], + [gl_cv_func_usleep_works=yes], [gl_cv_func_usleep_works=no], + [case "$host_os" in + # Guess yes on glibc systems. + *-gnu*) gl_cv_func_usleep_works="guessing yes" ;; + # Guess no on native Windows. + mingw*) gl_cv_func_usleep_works="guessing no" ;; + # If we don't know, assume the worst. + *) gl_cv_func_usleep_works="guessing no" ;; + esac + ])]) + case "$gl_cv_func_usleep_works" in + *yes) ;; + *) + REPLACE_USLEEP=1 + ;; + esac + fi +]) |