# Compute the list of sysdep directories for this configuration.
+# This can take a while to compute.
sysdep_dir=$srcdir/sysdeps
echo $ac_n "checking sysdep dirs""... $ac_c" 1>&6
-if eval "test \"`echo '$''{'libc_cv_sysdirs'+set}'`\" = set"; then
- echo $ac_n "(cached) $ac_c" 1>&6
-else
- # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1.
+# Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1.
os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`"
case "$os" in
# Expand the list of system names into a full list of directories
# from each element's parent name and Implies file (if present).
set $sysnames
+names= seen=
while test $# -gt 0; do
name=$1
shift
+ if echo "$seen" | fgrep -x $name >/dev/null; then
+ # Already in the list.
+ continue
+ fi
+
+ # Report each name as we discover it, so there is no long pause in output.
+ echo $ac_n "$name $ac_c" >&6
+
if test -f $sysdep_dir/$name/Implies; then
# Collect more names from the `Implies' file (removing comments).
implied="`sed 's/#.*$//' < $sysdep_dir/$name/Implies`"
for x in $implied; do
- test -d $sysdep_dir/$x || echo "Warning: $name implies nonexistent $x">&2
+ test -d $sysdep_dir/$x || {
+ echo "configure: warning: sysdeps/$name/Implies specifies nonexistent $x" 1>&2
+ }
done
else
implied=
# Add NAME to the list of names.
names="$names $name"
+ # We maintain a parallel newline-separated list for the fgrep check above.
+ seen="$seen
+$name"
# Find the parent of NAME, using the empty string if it has none.
parent="`echo $name | sed -n -e '/\//!q' -e 's=/[^/]*$==p'`"
done
# Add the default directories.
-names="$names generic stub"
+sysnames="$names generic stub"
+
+# The other names were emitted during the scan.
+echo "$ac_t""generic stub" 1>&6
-# Now uniquize the list.
-seen=
-sysnames=
-for name in $names; do
- if echo "$seen" | fgrep -x $name >/dev/null; then
- # Already in the list.
- true;
- else
- # A new one.
- if test -z "$seen"; then
- seen="$name" sysnames="$name"
- else
- seen="$seen
-$name"
- sysnames="$sysnames $name"
- fi
- fi
-done
-libc_cv_sysdirs="$sysnames"
-fi
-echo "$ac_t""$libc_cv_sysdirs" 1>&6
- sysnames="$libc_cv_sysdirs"
+### Locate tools.
# Find a good install program. We prefer a C program (faster),
# so one script is as good as another. But avoid the broken or
# On the NeXT, cc -E runs the code through the compiler's parser,
# not just through cpp.
cat > conftest.$ac_ext <<EOF
-#line 1105 "configure"
+#line 1099 "configure"
#include "confdefs.h"
#include <assert.h>
Syntax Error
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1111: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1105: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
ac_err=`grep -v '^ *+' conftest.out`
if test -z "$ac_err"; then
:
rm -rf conftest*
CPP="${CC-cc} -E -traditional-cpp"
cat > conftest.$ac_ext <<EOF
-#line 1120 "configure"
+#line 1114 "configure"
#include "confdefs.h"
#include <assert.h>
Syntax Error
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1126: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1120: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
ac_err=`grep -v '^ *+' conftest.out`
if test -z "$ac_err"; then
:
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 1268 "configure"
+#line 1262 "configure"
#include "confdefs.h"
#define __need_size_t
#define __need_wchar_t
if (&size == NULL || &wchar == NULL) abort ();
; return 0; }
EOF
-if { (eval echo configure:1284: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1278: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
libc_cv_friendly_stddef=yes
else
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 1391 "configure"
+#line 1385 "configure"
#include "confdefs.h"
int main() { return 0; }
asm (".text");
; return 0; }
EOF
-if { (eval echo configure:1401: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1395: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
libc_cv_have_initfini=yes
else
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 1429 "configure"
+#line 1423 "configure"
#include "confdefs.h"
asm ("_glibc_foobar:");
int main() { return 0; }
glibc_foobar ();
; return 0; }
EOF
-if { (eval echo configure:1437: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1431: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
rm -rf conftest*
libc_cv_asm_underscores=yes
else
__close (_dl_zerofd);
_dl_zerofd = -1;
- /* XXX if kept, move it so l_next list is in dep order because
- it will determine gdb's search order.
- Perhaps do this always, so later dlopen by name finds it?
- XXX But then gdb always considers it present. */
- if (_dl_rtld_map.l_opencount == 0)
+ /* Remove _dl_rtld_map from the chain. */
+ _dl_rtld_map.l_prev->l_next = _dl_rtld_map.l_next;
+ if (_dl_rtld_map.l_next)
+ _dl_rtld_map.l_next->l_prev = _dl_rtld_map.l_prev;
+
+ if (_dl_rtld_map.l_opencount)
{
- /* No DT_NEEDED entry referred to the interpreter object itself,
- so remove it from the list of visible objects. */
- _dl_rtld_map.l_prev->l_next = _dl_rtld_map.l_next;
+ /* Some DT_NEEDED entry referred to the interpreter object itself, so
+ put it back in the list of visible objects. We insert it into the
+ chain in symbol search order because gdb uses the chain's order as
+ its symbol search order. */
+ unsigned int i = 1;
+ while (l->l_searchlist[i] != &_dl_rtld_map)
+ ++i;
+ _dl_rtld_map.l_prev = l->l_searchlist[i - 1];
+ _dl_rtld_map.l_next = (i + 1 < l->l_nsearchlist ?
+ l->l_searchlist[i + 1] : NULL);
+ assert (_dl_rtld_map.l_prev->l_next == _dl_rtld_map.l_next);
+ _dl_rtld_map.l_prev->l_next = &_dl_rtld_map;
if (_dl_rtld_map.l_next)
- _dl_rtld_map.l_next->l_prev = _dl_rtld_map.l_prev;
+ {
+ assert (_dl_rtld_map.l_next->l_prev == _dl_rtld_map.l_prev);
+ _dl_rtld_map.l_next->l_prev = &_dl_rtld_map;
+ }
}
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