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re PR bootstrap/9249 (bootstrap fails with --enable-__cxa-atexit on Solaris) 

2004-01-30  Dara Hazeghi  <dhazeghi@yahoo.com>

        PR bootstrap/9249
        * doc/install.texi: document --enable-__cxa_atexit option.
        * configure.ac: Disable __cxa_atexit if not supported.
        * configure: Regenerate.

From-SVN: r77023
This commit is contained in:
Dara Hazeghi 2004-01-31 04:18:15 +00:00 committed by Andrew Pinski
parent 9781b6dabd
commit 354b7da5e3
4 changed files with 99 additions and 5 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2004-01-30 Dara Hazeghi <dhazeghi@yahoo.com>
PR bootstrap/9249
* doc/install.texi: document --enable-__cxa_atexit option.
* configure.ac: Disable __cxa_atexit if not supported.
* configure: Regenerate.
2003-01-30 Daniel Berlin <dberlin@dberlin.org>
* ggc-zone.c (ggc_free): New function.

77
gcc/configure vendored
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@ -8764,11 +8764,88 @@ fi
if test x$enable___cxa_atexit = xyes || \
test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
echo "$as_me:$LINENO: checking for __cxa_atexit" >&5
echo $ECHO_N "checking for __cxa_atexit... $ECHO_C" >&6
if test "${ac_cv_func___cxa_atexit+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
/* System header to define __stub macros and hopefully few prototypes,
which can conflict with char __cxa_atexit (); below.
Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
<limits.h> exists even on freestanding compilers. */
#ifdef __STDC__
# include <limits.h>
#else
# include <assert.h>
#endif
/* Override any gcc2 internal prototype to avoid an error. */
#ifdef __cplusplus
extern "C"
{
#endif
/* We use char because int might match the return type of a gcc2
builtin and then its argument prototype would still apply. */
char __cxa_atexit ();
/* The GNU C library defines this for functions which it implements
to always fail with ENOSYS. Some functions are actually named
something starting with __ and the normal name is an alias. */
#if defined (__stub___cxa_atexit) || defined (__stub_____cxa_atexit)
choke me
#else
char (*f) () = __cxa_atexit;
#endif
#ifdef __cplusplus
}
#endif
int
main ()
{
return f != __cxa_atexit;
;
return 0;
}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
(eval $ac_link) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -s conftest$ac_exeext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
ac_cv_func___cxa_atexit=yes
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
ac_cv_func___cxa_atexit=no
fi
rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
fi
echo "$as_me:$LINENO: result: $ac_cv_func___cxa_atexit" >&5
echo "${ECHO_T}$ac_cv_func___cxa_atexit" >&6
if test $ac_cv_func___cxa_atexit = yes; then
cat >>confdefs.h <<\_ACEOF
#define DEFAULT_USE_CXA_ATEXIT 1
_ACEOF
else
echo "__cxa_atexit can't be enabled on this target"
fi
fi
# Look for a file containing extra machine modes.

12
gcc/configure.ac
View File

@ -1136,11 +1136,13 @@ fi
if test x$enable___cxa_atexit = xyes || \
test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1,
[Define if you want to use __cxa_atexit, rather than atexit, to
register C++ destructors for local statics and global objects.
This is essential for fully standards-compliant handling of
destructors, but requires __cxa_atexit in libc.])
AC_CHECK_FUNC(__cxa_atexit,
[AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1,
[Define if you want to use __cxa_atexit, rather than atexit, to
register C++ destructors for local statics and global objects.
This is essential for fully standards-compliant handling of
destructors, but requires __cxa_atexit in libc.])],
echo "__cxa_atexit can't be enabled on this target")
fi
# Look for a file containing extra machine modes.

8
gcc/doc/install.texi
View File

@ -939,6 +939,14 @@ option will adjust the ABI for AltiVec enhancements, as well as generate
AltiVec code when appropriate. This option is only available for
PowerPC systems.
@item --enable-__cxa_atexit
Define if you want to use __cxa_atexit, rather than atexit, to
register C++ destructors for local statics and global objects.
This is essential for fully standards-compliant handling of
destructors, but requires __cxa_atexit in libc. This option is currently
only available on sytems with GNU libc. When enabled, this will cause
@option{-fuse-cxa-exit} to be passed by default.
@item --enable-target-optspace
Specify that target
libraries should be optimized for code space instead of code speed.