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88 lines
2.4 KiB
Plaintext
88 lines
2.4 KiB
Plaintext
# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
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if test "x$libc_cv_gcc___thread" != xyes; then
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as_fn_error $? "compiler support for __thread is required" "$LINENO" 5
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fi
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if test "x${libc_cv_visibility_attribute}" != xyes ||
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test "x${libc_cv_broken_visibility_attribute}" != xno; then
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as_fn_error $? "working compiler support for visibility attribute is required" "$LINENO" 5
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for forced unwind support" >&5
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$as_echo_n "checking for forced unwind support... " >&6; }
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if ${libc_cv_forced_unwind+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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old_CPPFLAGS="$CPPFLAGS"
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# Without inhibit_libc #define'd, GCC's unwind.h (at least for ia64)
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# will try to include <stdlib.h>, which doesn't exist yet if we're
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# building libc in a bare environment.
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CPPFLAGS="$CPPFLAGS -Dinhibit_libc=1"
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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#include <unwind.h>
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int
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main ()
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{
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struct _Unwind_Exception exc;
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struct _Unwind_Context *context;
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_Unwind_GetCFA (context)
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_compile "$LINENO"; then :
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libc_cv_forced_unwind=yes
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else
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libc_cv_forced_unwind=no
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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CPPFLAGS="$old_CPPFLAGS"
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_forced_unwind" >&5
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$as_echo "$libc_cv_forced_unwind" >&6; }
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if test $libc_cv_forced_unwind = yes; then
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$as_echo "#define HAVE_FORCED_UNWIND 1" >>confdefs.h
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old_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror -fexceptions"
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for C cleanup handling" >&5
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$as_echo_n "checking for C cleanup handling... " >&6; }
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if ${libc_cv_c_cleanup+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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extern void some_function (void);
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void cl (void *a) { }
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int
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main ()
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{
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int a __attribute__ ((cleanup (cl)));
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some_function ()
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_compile "$LINENO"; then :
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libc_cv_c_cleanup=yes
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else
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libc_cv_c_cleanup=no
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_c_cleanup" >&5
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$as_echo "$libc_cv_c_cleanup" >&6; }
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CFLAGS="$old_CFLAGS"
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if test $libc_cv_c_cleanup = no; then
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as_fn_error $? "the compiler must support C cleanup handling" "$LINENO" 5
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fi
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else
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as_fn_error $? "forced unwind support is required" "$LINENO" 5
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fi
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