+2012-09-10 Sebastian Huber <sebastian.huber@embedded-brains.de>
+ Jonathan Wakely <jwakely.gcc@gmail.com>
+
+ PR libstdc++/43852
+ * acinclude.m4 (GLIBCXX_ENABLE_VERBOSE): Define.
+ * configure.ac (GLIBCXX_ENABLE_VERBOSE): Use it.
+ * config.h.in: Regenerate.
+ * configure: Likewise.
+ * libsupc++/eh_term_handler.cc (_GLIBCXX_VERBOSE): Check new macro.
+ * libsupc++/pure.cc (_GLIBCXX_VERBOSE): Likewise.
+ * doc/xml/manual/configure.xml (--disable-libstdcxx-verbose): Document.
+ * doc/html/manual/configure.html: Regenerate.
+
2012-09-09 Jonathan Wakely <jwakely.gcc@gmail.com>
PR bootstrap/54419
])
+dnl
+dnl Check if the user wants a non-verbose library implementation.
+dnl
+dnl --disable-libstdcxx-verbose will turn off descriptive messages to
+dnl standard error on termination.
+dnl
+dnl Defines:
+dnl _GLIBCXX_VERBOSE (always defined, either to 1 or 0)
+dnl
+AC_DEFUN([GLIBCXX_ENABLE_VERBOSE], [
+ AC_ARG_ENABLE([libstdcxx-verbose],
+ AC_HELP_STRING([--disable-libstdcxx-verbose],
+ [disable termination messages to standard error]),,
+ [enable_libstdcxx_verbose=yes])
+ if test x"$enable_libstdcxx_verbose" = xyes; then
+ verbose_define=1
+ else
+ AC_MSG_NOTICE([verbose termination messages are disabled])
+ verbose_define=0
+ fi
+ AC_DEFINE_UNQUOTED(_GLIBCXX_VERBOSE, $verbose_define,
+ [Define to 1 if a verbose library is built, or 0 otherwise.])
+])
+
+
dnl
dnl Check for template specializations for the 'long long' type.
dnl The result determines only whether 'long long' I/O is enabled; things
/* Define if code specialized for wchar_t should be used. */
#undef _GLIBCXX_USE_WCHAR_T
+/* Define to 1 if a verbose library is built, or 0 otherwise. */
+#undef _GLIBCXX_VERBOSE
+
/* Defined if as can handle rdrand. */
#undef _GLIBCXX_X86_RDRAND
with_gnu_ld
enable_libtool_lock
enable_hosted_libstdcxx
+enable_libstdcxx_verbose
enable_sjlj_exceptions
enable_libstdcxx_pch
enable_cstdio
--disable-libtool-lock avoid locking (might break parallel builds)
--disable-hosted-libstdcxx
only build freestanding C++ runtime support
+ --disable-libstdcxx-verbose
+ disable termination messages to standard error
--enable-sjlj-exceptions
force use of builtin_setjmp for exceptions
[default=auto]
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 11507 "configure"
+#line 11510 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 11613 "configure"
+#line 11616 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
+# Enable descriptive messages to standard output on termination.
+
+ # Check whether --enable-libstdcxx-verbose was given.
+if test "${enable_libstdcxx_verbose+set}" = set; then :
+ enableval=$enable_libstdcxx_verbose;
+else
+ enable_libstdcxx_verbose=yes
+fi
+
+ if test x"$enable_libstdcxx_verbose" = xyes; then
+ verbose_define=1
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: verbose termination messages are disabled" >&5
+$as_echo "$as_me: verbose termination messages are disabled" >&6;}
+ verbose_define=0
+ fi
+
+cat >>confdefs.h <<_ACEOF
+#define _GLIBCXX_VERBOSE $verbose_define
+_ACEOF
+
+
+
# Enable compiler support that doesn't require linking.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for exception model to use" >&5
#
# Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style.
cat > conftest.$ac_ext << EOF
-#line 14971 "configure"
+#line 14997 "configure"
struct S { ~S(); };
void bar();
void foo()
# Fake what AC_TRY_COMPILE does.
cat > conftest.$ac_ext << EOF
-#line 15306 "configure"
+#line 15332 "configure"
int main()
{
typedef bool atomic_type;
rm -f conftest*
cat > conftest.$ac_ext << EOF
-#line 15341 "configure"
+#line 15367 "configure"
int main()
{
typedef short atomic_type;
rm -f conftest*
cat > conftest.$ac_ext << EOF
-#line 15376 "configure"
+#line 15402 "configure"
int main()
{
// NB: _Atomic_word not necessarily int.
rm -f conftest*
cat > conftest.$ac_ext << EOF
-#line 15412 "configure"
+#line 15438 "configure"
int main()
{
typedef long long atomic_type;
# unnecessary for this test.
cat > conftest.$ac_ext << EOF
-#line 15491 "configure"
+#line 15517 "configure"
int main()
{
_Decimal32 d1;
# unnecessary for this test.
cat > conftest.$ac_ext << EOF
-#line 15533 "configure"
+#line 15559 "configure"
template<typename T1, typename T2>
struct same
{ typedef T2 type; };
rm -f conftest*
cat > conftest.$ac_ext << EOF
-#line 15567 "configure"
+#line 15593 "configure"
template<typename T1, typename T2>
struct same
{ typedef T2 type; };
## than just ignoring the results. Faster /and/ more correct, win win.
GLIBCXX_ENABLE_HOSTED
+# Enable descriptive messages to standard output on termination.
+GLIBCXX_ENABLE_VERBOSE
+
# Enable compiler support that doesn't require linking.
GLIBCXX_ENABLE_SJLJ_EXCEPTIONS
GLIBCXX_ENABLE_PCH($is_hosted)
<span class="emphasis"><em>freestanding</em></span> environment, in which only a
minimal set of headers are provided. This option builds such an
environment.
+ </p></dd><dt><span class="term"><code class="code">--disable-libstdcxx-verbose</code></span></dt><dd><p>
+ By default, the library is configured to write descriptive messages
+ to standard error for certain events such as calling a pure virtual
+ function or the invocation of the standard terminate handler. Those
+ messages cause the library to depend on the demangler and standard I/O
+ facilites, which might be undesirable in a low-memory environment or
+ when standard error is not available. This option disables those
+ messages. This option does not change the library ABI.
</p></dd></dl></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="setup.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="setup.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="make.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 2. Setup </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Make</td></tr></table></div></body></html>
</para>
</listitem></varlistentry>
+<varlistentry><term><code>--disable-libstdcxx-verbose</code></term>
+ <listitem>
+ <para>
+ By default, the library is configured to write descriptive messages
+ to standard error for certain events such as calling a pure virtual
+ function or the invocation of the standard terminate handler. Those
+ messages cause the library to depend on the demangler and standard I/O
+ facilites, which might be undesirable in a low-memory environment or
+ when standard error is not available. This option disables those
+ messages. This option does not change the library ABI.
+ </para>
+ </listitem></varlistentry>
+
</variablelist>
</section>
// -*- C++ -*- std::terminate handler
-// Copyright (C) 2002, 2003, 2009 Free Software Foundation
+// Copyright (C) 2002-2012 Free Software Foundation
//
// This file is part of GCC.
//
/* We default to the talkative, informative handler in a normal hosted
library. This pulls in the demangler, the dyn-string utilities, and
elements of the I/O library. For a low-memory environment, you can return
- to the earlier "silent death" handler by including <cstdlib>, initializing
- to "std::abort", and rebuilding the library. In a freestanding mode, we
- default to this latter approach. */
-
-#if ! _GLIBCXX_HOSTED
-# include <cstdlib>
-#endif
+ to the earlier "silent death" handler by configuring GCC with
+ --disable-libstdcxx-verbose and rebuilding the library.
+ In a freestanding environment, we default to this latter approach. */
+#if _GLIBCXX_HOSTED && _GLIBCXX_VERBOSE
/* The current installed user handler. */
std::terminate_handler __cxxabiv1::__terminate_handler =
-#if _GLIBCXX_HOSTED
__gnu_cxx::__verbose_terminate_handler;
#else
- std::abort;
+# include <cstdlib>
+/* The current installed user handler. */
+std::terminate_handler __cxxabiv1::__terminate_handler = std::abort;
#endif
// -*- C++ -*-
-// Copyright (C) 2000, 2001, 2009, 2011 Free Software Foundation
+// Copyright (C) 2000-2012 Free Software Foundation
//
// This file is part of GCC.
//
#include <cxxabi.h>
#include "unwind-cxx.h"
-#if _GLIBCXX_HOSTED
+#if _GLIBCXX_HOSTED && _GLIBCXX_VERBOSE
#ifdef _GLIBCXX_HAVE_UNISTD_H
# include <unistd.h>
# define writestr(str) write(2, str, sizeof(str) - 1)
projects / thirdparty / gcc.git / commitdiff
