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Configury changes for obstack optimization 

Provides defines used to determine whether glibc obstacks are
compatible.  Generally speaking, 32-bit targets won't need to use
obstack.o from libiberty if glibc is used, while 64-bit targets will,
until glibc gets the new obstack code.

libiberty/
	* configure.ac: Get size of size_t.
	* config.in: Regenerate.
	* configure: Regenerate.
This commit is contained in:
Alan Modra 2015-11-09 15:17:05 +10:30
parent 78d14d2b93
commit c20a064233
4 changed files with 44 additions and 0 deletions
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6
libiberty/ChangeLog
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@ -1,3 +1,9 @@
2015-11-09 Alan Modra <amodra@gmail.com>
* configure.ac: Check size of size_t.
* configure: Regenerate.
* config.in: Regenerate.
2015-11-09 Alan Modra <amodra@gmail.com>
* obstack.c (_obstack_newchunk): Silence -Wc++compat warning.

3
libiberty/config.in
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@ -470,6 +470,9 @@
/* The size of `long long', as computed by sizeof. */
#undef SIZEOF_LONG_LONG
/* The size of `size_t', as computed by sizeof. */
#undef SIZEOF_SIZE_T
/* Define if you know the direction of stack growth for your system; otherwise
it will be automatically deduced at run-time. STACK_DIRECTION > 0 => grows
toward higher addresses STACK_DIRECTION < 0 => grows toward lower addresses

34
libiberty/configure vendored
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@ -5405,6 +5405,40 @@ cat >>confdefs.h <<_ACEOF
_ACEOF
# The cast to long int works around a bug in the HP C Compiler
# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
# This bug is HP SR number 8606223364.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of size_t" >&5
$as_echo_n "checking size of size_t... " >&6; }
if test "${ac_cv_sizeof_size_t+set}" = set; then :
$as_echo_n "(cached) " >&6
else
if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (size_t))" "ac_cv_sizeof_size_t" "$ac_includes_default"; then :
else
if test "$ac_cv_type_size_t" = yes; then
{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
{ as_fn_set_status 77
as_fn_error "cannot compute sizeof (size_t)
See \`config.log' for more details." "$LINENO" 5; }; }
else
ac_cv_sizeof_size_t=0
fi
fi
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_size_t" >&5
$as_echo "$ac_cv_sizeof_size_t" >&6; }
cat >>confdefs.h <<_ACEOF
#define SIZEOF_SIZE_T $ac_cv_sizeof_size_t
_ACEOF
# Check for presense of long long
ac_fn_c_check_type "$LINENO" "long long" "ac_cv_type_long_long" "$ac_includes_default"

1
libiberty/configure.ac
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@ -276,6 +276,7 @@ libiberty_AC_DECLARE_ERRNO
# Determine sizes of some types.
AC_CHECK_SIZEOF([int])
AC_CHECK_SIZEOF([long])
AC_CHECK_SIZEOF([size_t])
# Check for presense of long long
AC_CHECK_TYPE([long long],