blob: 18bae6bbc0fc31f7e3bea65516d4e974d75a83da (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for forced unwind support" >&5
$as_echo_n "checking for forced unwind support... " >&6; }
if ${libc_cv_forced_unwind+:} false; then :
$as_echo_n "(cached) " >&6
else
old_CPPFLAGS="$CPPFLAGS"
# Without inhibit_libc #define'd, GCC's unwind.h (at least for ia64)
# will try to include <stdlib.h>, which doesn't exist yet if we're
# building libc in a bare environment.
CPPFLAGS="$CPPFLAGS -Dinhibit_libc=1"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <unwind.h>
int
main ()
{
struct _Unwind_Exception exc;
struct _Unwind_Context *context;
_Unwind_GetCFA (context)
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
libc_cv_forced_unwind=yes
else
libc_cv_forced_unwind=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
CPPFLAGS="$old_CPPFLAGS"
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_forced_unwind" >&5
$as_echo "$libc_cv_forced_unwind" >&6; }
if test $libc_cv_forced_unwind = yes; then
$as_echo "#define HAVE_FORCED_UNWIND 1" >>confdefs.h
old_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror -fexceptions"
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for C cleanup handling" >&5
$as_echo_n "checking for C cleanup handling... " >&6; }
if ${libc_cv_c_cleanup+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
extern void some_function (void);
void cl (void *a) { }
int
main ()
{
int a __attribute__ ((cleanup (cl)));
some_function ()
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
libc_cv_c_cleanup=yes
else
libc_cv_c_cleanup=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_c_cleanup" >&5
$as_echo "$libc_cv_c_cleanup" >&6; }
CFLAGS="$old_CFLAGS"
if test $libc_cv_c_cleanup = no; then
as_fn_error $? "the compiler must support C cleanup handling" "$LINENO" 5
fi
else
as_fn_error $? "forced unwind support is required" "$LINENO" 5
fi
|
