diff options
| author | Joe Mistachkin <joe@mistachkin.com> | 2015-05-18 20:33:56 (GMT) |
|---|---|---|
| committer | Joe Mistachkin <joe@mistachkin.com> | 2015-05-18 20:33:56 (GMT) |
| commit | 8c0a7dab9b12dda93f76637c8e32316148890b88 (patch) | |
| tree | 9ac06e69edb62cbb5a23db9265d76689584f644d /unix/tcl.m4 | |
| parent | 193821f1117e26ef65b36062a8e5488450a3525c (diff) | |
| download | tcl-8c0a7dab9b12dda93f76637c8e32316148890b88.zip tcl-8c0a7dab9b12dda93f76637c8e32316148890b88.tar.gz tcl-8c0a7dab9b12dda93f76637c8e32316148890b88.tar.bz2 | |
First attempt at implementing the necessary auto-magic for usleep.
Diffstat (limited to 'unix/tcl.m4')
| -rw-r--r-- | unix/tcl.m4 | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/unix/tcl.m4 b/unix/tcl.m4 index 25c2699..3ffdcd4 100644 --- a/unix/tcl.m4 +++ b/unix/tcl.m4 @@ -774,6 +774,48 @@ AC_DEFUN([SC_ENABLE_SYMBOLS], [ ]) #------------------------------------------------------------------------ +# SC_ENABLE_USLEEP -- +# +# Allows use of usleep function. +# This is only relevant for Unix. +# +# Arguments: +# none +# +# Results: +# +# Adds the following arguments to configure: +# --enable-usleep=yes|no (default is yes) +# +# Defines the following vars: +# HAVE_USLEEP Triggers use of usleep if defined. +#------------------------------------------------------------------------ + +AC_DEFUN([SC_ENABLE_USLEEP], [ + AC_ARG_ENABLE(usleep, + AC_HELP_STRING([--enable-usleep], + [use usleep if possible to sleep, otherwise use Tcl_Sleep (default: on)]), + [usleep_ok=$enableval], [usleep_ok=yes]) + + HAVE_USLEEP=0 + if test "$usleep_ok" = "yes"; then + AC_CHECK_HEADER(unistd.h,[usleep_ok=yes],[usleep_ok=no]) + fi + AC_MSG_CHECKING([whether to use usleep]) + if test "$usleep_ok" = "yes"; then + AC_CACHE_VAL(tcl_cv_usleep_h, [ + AC_TRY_COMPILE([#include <unistd.h>], [usleep(0);], + [tcl_cv_usleep_h=yes],[tcl_cv_usleep_h=no])]) + AC_MSG_RESULT([$tcl_cv_usleep_h]) + if test $tcl_cv_usleep_h = yes; then + AC_DEFINE(HAVE_USLEEP, 1, [Do we have usleep()?]) + fi + else + AC_MSG_RESULT([$usleep_ok]) + fi +]) + +#------------------------------------------------------------------------ # SC_ENABLE_LANGINFO -- # # Allows use of modern nl_langinfo check for better l10n. |