acinclude.m4 ([GLIBCXX_CHECK_GETTIMEOFDAY]): Change to use GCC_TRY_COMPILE_OR_LINK.
2008-08-23 Paolo Carlini <paolo.carlini@oracle.com> * acinclude.m4 ([GLIBCXX_CHECK_GETTIMEOFDAY]): Change to use GCC_TRY_COMPILE_OR_LINK. ([GLIBCXX_CHECK_CLOCK_GETTIME]): Rename to [GLIBCXX_ENABLE_CLOCK_GETTIME], a versatile configure-time option, [no] by default, since it includes TRY_LINK checks. librt is also searched, if requested. * doc/xml/manual/configure.xml: Document the latter. * configure.ac: Move the above checks outside native-only. * configure: Regenerate. From-SVN: r139530
This commit is contained in:
Paolo Carlini
Paolo Carlini
parent
033f28dc65
commit
610870b25a
|
|
@ -1,3 +1,15 @@
|
|||
2008-08-23 Paolo Carlini <paolo.carlini@oracle.com>
|
||||
|
||||
* acinclude.m4 ([GLIBCXX_CHECK_GETTIMEOFDAY]): Change to use
|
||||
GCC_TRY_COMPILE_OR_LINK.
|
||||
([GLIBCXX_CHECK_CLOCK_GETTIME]): Rename to
|
||||
[GLIBCXX_ENABLE_CLOCK_GETTIME], a versatile configure-time option,
|
||||
[no] by default, since it includes TRY_LINK checks. librt is also
|
||||
searched, if requested.
|
||||
* doc/xml/manual/configure.xml: Document the latter.
|
||||
* configure.ac: Move the above checks outside native-only.
|
||||
* configure: Regenerate.
|
||||
|
||||
2008-08-23 Paolo Carlini <paolo.carlini@oracle.com>
|
||||
|
||||
* testsuite/lib/libstdc++.exp (check_v3_target_atomic_builtins): Add.
|
||||
|
|
|
|||
|
|
@ -1074,10 +1074,29 @@ AC_DEFUN([GLIBCXX_ENABLE_C99], [
|
|||
|
||||
|
||||
dnl
|
||||
dnl Check for IEEE Std 1003.1-2001 clock_gettime required for
|
||||
dnl 20.8.5 [time.clock] in the current C++0X working draft.
|
||||
dnl Check for clock_gettime clocks, used in the implementation of 20.8.5
|
||||
dnl [time.clock] in the current C++0x working draft.
|
||||
dnl
|
||||
AC_DEFUN([GLIBCXX_CHECK_CLOCK_GETTIME], [
|
||||
dnl --enable-clock-gettime
|
||||
dnl --enable-clock-gettime=yes
|
||||
dnl checks for the availability of monotonic or realtime clocks
|
||||
dnl in libc and libposix4
|
||||
dnl --enable-clock-gettime=rt
|
||||
dnl searches librt too, and in case of success enables its linking
|
||||
dnl to libstdc++ as part of the build process. Note that this is
|
||||
dnl not always desirable because, in glibc, for example, in turn it
|
||||
dnl triggers automatically the linking of libpthread too, which
|
||||
dnl activates locking, a large overhead for single-thread programs.
|
||||
dnl --enable-clock-gettime=no
|
||||
dnl --disable-clock-gettime
|
||||
dnl disables the checks completely
|
||||
dnl
|
||||
AC_DEFUN([GLIBCXX_ENABLE_CLOCK_GETTIME], [
|
||||
|
||||
AC_MSG_CHECKING([for clock_gettime clocks])
|
||||
GLIBCXX_ENABLE(clock-gettime,$1,,
|
||||
[use KIND for check type],
|
||||
[permit yes|no|rt])
|
||||
|
||||
AC_LANG_SAVE
|
||||
AC_LANG_CPLUSPLUS
|
||||
|
|
@ -1085,45 +1104,53 @@ AC_DEFUN([GLIBCXX_CHECK_CLOCK_GETTIME], [
|
|||
CXXFLAGS="$CXXFLAGS -fno-exceptions"
|
||||
ac_save_LIBS="$LIBS"
|
||||
|
||||
AC_SEARCH_LIBS(clock_gettime, [posix4])
|
||||
|
||||
# Link to -lposix4.
|
||||
case "$ac_cv_search_clock_gettime" in
|
||||
-lposix4*) GLIBCXX_LIBS=$ac_cv_search_clock_gettime
|
||||
esac
|
||||
|
||||
AC_CHECK_HEADERS(unistd.h, ac_has_unistd_h=yes, ac_has_unistd_h=no)
|
||||
|
||||
ac_has_clock_monotonic=no;
|
||||
ac_has_clock_realtime=no;
|
||||
if test x"$ac_has_unistd_h" = x"yes"; then
|
||||
AC_MSG_CHECKING([for monotonic clock])
|
||||
AC_TRY_LINK(
|
||||
[#include <unistd.h>
|
||||
#include <time.h>
|
||||
],
|
||||
[#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK)
|
||||
timespec tp;
|
||||
#endif
|
||||
clock_gettime(CLOCK_MONOTONIC, &tp);
|
||||
], [ac_has_clock_monotonic=yes], [ac_has_clock_monotonic=no])
|
||||
ac_has_clock_realtime=no;
|
||||
|
||||
if test x"$enable_clock_gettime" != x"no"; then
|
||||
|
||||
if test x"$enable_clock_gettime" = x"rt"; then
|
||||
AC_SEARCH_LIBS(clock_gettime, [rt posix4])
|
||||
else
|
||||
AC_SEARCH_LIBS(clock_gettime, [posix4])
|
||||
fi
|
||||
|
||||
case "$ac_cv_search_clock_gettime" in
|
||||
-l*) GLIBCXX_LIBS=$ac_cv_search_clock_gettime
|
||||
esac
|
||||
|
||||
AC_CHECK_HEADERS(unistd.h, ac_has_unistd_h=yes, ac_has_unistd_h=no)
|
||||
|
||||
if test x"$ac_has_unistd_h" = x"yes"; then
|
||||
AC_MSG_CHECKING([for monotonic clock])
|
||||
AC_TRY_LINK(
|
||||
[#include <unistd.h>
|
||||
#include <time.h>
|
||||
],
|
||||
[#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK)
|
||||
timespec tp;
|
||||
#endif
|
||||
clock_gettime(CLOCK_MONOTONIC, &tp);
|
||||
], [ac_has_clock_monotonic=yes], [ac_has_clock_monotonic=no])
|
||||
|
||||
AC_MSG_RESULT($ac_has_clock_monotonic)
|
||||
|
||||
AC_MSG_RESULT($ac_has_clock_monotonic)
|
||||
|
||||
AC_MSG_CHECKING([for realtime clock])
|
||||
AC_TRY_LINK(
|
||||
[#include <unistd.h>
|
||||
#include <time.h>
|
||||
],
|
||||
[#if _POSIX_TIMERS > 0
|
||||
timespec tp;
|
||||
#endif
|
||||
clock_gettime(CLOCK_REALTIME, &tp);
|
||||
], [ac_has_clock_realtime=yes], [ac_has_clock_realtime=no])
|
||||
|
||||
AC_MSG_RESULT($ac_has_clock_realtime)
|
||||
fi
|
||||
|
||||
AC_MSG_CHECKING([for realtime clock])
|
||||
AC_TRY_LINK(
|
||||
[#include <unistd.h>
|
||||
#include <time.h>
|
||||
],
|
||||
[#if _POSIX_TIMERS > 0
|
||||
timespec tp;
|
||||
#endif
|
||||
clock_gettime(CLOCK_REALTIME, &tp);
|
||||
], [ac_has_clock_realtime=yes], [ac_has_clock_realtime=no])
|
||||
|
||||
AC_MSG_RESULT($ac_has_clock_realtime)
|
||||
fi
|
||||
|
||||
fi
|
||||
|
||||
if test x"$ac_has_clock_monotonic" = x"yes"; then
|
||||
AC_DEFINE(_GLIBCXX_USE_CLOCK_MONOTONIC, 1,
|
||||
[ Defined if clock_gettime has monotonic clock support. ])
|
||||
|
|
@ -1142,11 +1169,13 @@ AC_DEFUN([GLIBCXX_CHECK_CLOCK_GETTIME], [
|
|||
])
|
||||
|
||||
dnl
|
||||
dnl Check for IEEE Std 1003.1-2001 gettimeofday required for
|
||||
dnl 20.8.5 [time.clock] in the current C++0X working draft.
|
||||
dnl Check for gettimeofday, used in the implementation of 20.8.5
|
||||
dnl [time.clock] in the current C++0x working draft.
|
||||
dnl
|
||||
AC_DEFUN([GLIBCXX_CHECK_GETTIMEOFDAY], [
|
||||
|
||||
AC_MSG_CHECKING([for gettimeofday])
|
||||
|
||||
AC_LANG_SAVE
|
||||
AC_LANG_CPLUSPLUS
|
||||
ac_save_CXXFLAGS="$CXXFLAGS"
|
||||
|
|
@ -1156,7 +1185,7 @@ AC_DEFUN([GLIBCXX_CHECK_GETTIMEOFDAY], [
|
|||
AC_CHECK_HEADERS(sys/time.h, ac_has_sys_time_h=yes, ac_has_sys_time_h=no)
|
||||
if test x"$ac_has_sys_time_h" = x"yes"; then
|
||||
AC_MSG_CHECKING([for gettimeofday])
|
||||
AC_TRY_LINK([#include <sys/time.h>],
|
||||
GCC_TRY_COMPILE_OR_LINK([#include <sys/time.h>],
|
||||
[timeval tv; gettimeofday(&tv, 0);],
|
||||
[ac_has_gettimeofday=yes], [ac_has_gettimeofday=no])
|
||||
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load Diff
|
|
@ -143,6 +143,13 @@ GLIBCXX_CHECK_C99_TR1
|
|||
# For common values of EOF, SEEK_CUR, SEEK_END.
|
||||
GLIBCXX_CHECK_STDIO_MACROS
|
||||
|
||||
# For gettimeofday support.
|
||||
GLIBCXX_CHECK_GETTIMEOFDAY
|
||||
|
||||
# For clock_gettime support.
|
||||
# NB: The default is [no], because otherwise it requires linking.
|
||||
GLIBCXX_ENABLE_CLOCK_GETTIME([no])
|
||||
|
||||
AC_LC_MESSAGES
|
||||
|
||||
# Check for available headers.
|
||||
|
|
@ -167,12 +174,6 @@ if $GLIBCXX_IS_NATIVE; then
|
|||
# For dev/random and dev/urandom for TR1.
|
||||
GLIBCXX_CHECK_RANDOM_TR1
|
||||
|
||||
# For clock_gettime support.
|
||||
GLIBCXX_CHECK_CLOCK_GETTIME
|
||||
|
||||
# For gettimeofday support.
|
||||
GLIBCXX_CHECK_GETTIMEOFDAY
|
||||
|
||||
# For TLS support.
|
||||
GCC_CHECK_TLS
|
||||
|
||||
|
|
|
|||
|
|
@ -312,7 +312,27 @@
|
|||
environment.
|
||||
</para>
|
||||
</listitem></varlistentry>
|
||||
|
||||
<varlistentry><term><code>--enable-clock-gettime</code></term>
|
||||
<listitem><para>This is an abbreviated form of
|
||||
<code>'--enable-clock-gettime=yes'</code>(described next).
|
||||
</para>
|
||||
</listitem></varlistentry>
|
||||
|
||||
<varlistentry><term><code>--enable-clock-gettime=OPTION</code></term>
|
||||
<listitem><para>Enables checks (link-type too) for the clock_gettime clocks,
|
||||
used in the implementation [time.clock] in the current C++0x draft.
|
||||
The choice OPTION=yes checks for the availability of the monotonic and
|
||||
realtime clocks in libc and libposix4. OPTION=rt searches librt too,
|
||||
and in case of success enables its linking to libstdc++ as part of the
|
||||
build process. Note that this is not always desirable because, in
|
||||
glibc, for example, in turn it triggers automatically the linking of
|
||||
libpthread too, which activates locking, a large overhead for
|
||||
single-thread programs. OPTION=no skips the tests completely. The
|
||||
default is OPTION=no.
|
||||
</para>
|
||||
</listitem></varlistentry>
|
||||
|
||||
</variablelist>
|
||||
|
||||
|
||||
</sect1>
|
||||
Loading…
Reference in New Issue