--- a/configure
+++ b/configure
@@ -2348,16 +2348,17 @@ test -n "$PERL" || PERL=":"
 OBJ_SUFFIX=o
 LIB_SUFFIX=a
 DLL_SUFFIX=so
 MKSHLIB='$(LD) $(DSO_LDOPTS) -o $@'
 PR_MD_ASFILES=
 PR_MD_CSRCS=
 PR_MD_ARCH_DIR=unix
 AR_FLAGS='cr $@'
+AS='$(CC)'
 
 OS_TARGET=`uname -s`
 OS_ARCH=`uname -s | sed -e 's|/|_|g'`
 OS_RELEASE=`uname -r`
 OS_TEST=`uname -m`
 
 case "$host" in
 *-mingw*)
@@ -2886,16 +2887,20 @@ EOF
         cat >> confdefs.h <<\EOF
 #define __alpha 1
 EOF
 
         CFLAGS="$CFLAGS -mieee"
         CXXFLAGS="$CXXFLAGS -mieee"
         _OPTIMIZE_FLAGS=-O2
         ;;
+    i?86)
+        PR_MD_ASFILES=os_Linux_x86.s
+        _OPTIMIZE_FLAGS=-O2
+        ;;
     m68k)
         _OPTIMIZE_FLAGS=-O
         CFLAGS="$CFLAGS -m68020-40"
         CXXFLAGS="$CXXFLAGS -m68020-40"
         ;;
     *)
         _OPTIMIZE_FLAGS=-O2
         ;;
@@ -3108,72 +3113,72 @@ esac
 if test "$enable_shared" = no; then
     MKSHLIB=
 fi
 
 
 
 
 echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
-echo "configure:3117: checking how to run the C preprocessor" >&5
+echo "configure:3122: checking how to run the C preprocessor" >&5
 # On Suns, sometimes $CPP names a directory.
 if test -n "$CPP" && test -d "$CPP"; then
   CPP=
 fi
 if test -z "$CPP"; then
 if eval "test \"`echo '$''{'ac_cv_prog_CPP'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
     # This must be in double quotes, not single quotes, because CPP may get
   # substituted into the Makefile and "${CC-cc}" will confuse make.
   CPP="${CC-cc} -E"
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp.
   cat > conftest.$ac_ext <<EOF
-#line 3132 "configure"
+#line 3137 "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:3138: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:3143: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
 else
   echo "$ac_err" >&5
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   CPP="${CC-cc} -E -traditional-cpp"
   cat > conftest.$ac_ext <<EOF
-#line 3149 "configure"
+#line 3154 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:3155: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:3160: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
 else
   echo "$ac_err" >&5
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   CPP="${CC-cc} -nologo -E"
   cat > conftest.$ac_ext <<EOF
-#line 3166 "configure"
+#line 3171 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:3172: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:3177: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
 else
   echo "$ac_err" >&5
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
   rm -rf conftest*
@@ -3189,23 +3194,23 @@ fi
   CPP="$ac_cv_prog_CPP"
 else
   ac_cv_prog_CPP="$CPP"
 fi
 echo "$ac_t""$CPP" 1>&6
 
 if test $ac_cv_prog_gcc = yes; then
     echo $ac_n "checking whether ${CC-cc} needs -traditional""... $ac_c" 1>&6
-echo "configure:3198: checking whether ${CC-cc} needs -traditional" >&5
+echo "configure:3203: checking whether ${CC-cc} needs -traditional" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc_traditional'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
     ac_pattern="Autoconf.*'x'"
   cat > conftest.$ac_ext <<EOF
-#line 3204 "configure"
+#line 3209 "configure"
 #include "confdefs.h"
 #include <sgtty.h>
 Autoconf TIOCGETP
 EOF
 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
   egrep "$ac_pattern" >/dev/null 2>&1; then
   rm -rf conftest*
   ac_cv_prog_gcc_traditional=yes
@@ -3213,17 +3218,17 @@ else
   rm -rf conftest*
   ac_cv_prog_gcc_traditional=no
 fi
 rm -f conftest*
 
 
   if test $ac_cv_prog_gcc_traditional = no; then
     cat > conftest.$ac_ext <<EOF
-#line 3222 "configure"
+#line 3227 "configure"
 #include "confdefs.h"
 #include <termio.h>
 Autoconf TCGETA
 EOF
 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
   egrep "$ac_pattern" >/dev/null 2>&1; then
   rm -rf conftest*
   ac_cv_prog_gcc_traditional=yes
@@ -3237,22 +3242,22 @@ echo "$ac_t""$ac_cv_prog_gcc_traditional
   if test $ac_cv_prog_gcc_traditional = yes; then
     CC="$CC -traditional"
   fi
 fi
 
 for ac_func in lchown strerror
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:3246: checking for $ac_func" >&5
+echo "configure:3251: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3251 "configure"
+#line 3256 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
 #include <assert.h>
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
@@ -3265,17 +3270,17 @@ int main() {
 #if defined (__stub_$ac_func) || defined (__stub___$ac_func)
 choke me
 #else
 $ac_func();
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:3274: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3279: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=no"
 fi
@@ -3293,36 +3298,36 @@ else
   echo "$ac_t""no" 1>&6
 fi
 done
 
 
 
 
 echo $ac_n "checking for pthread_attr_init in -lpthread""... $ac_c" 1>&6
-echo "configure:3302: checking for pthread_attr_init in -lpthread" >&5
+echo "configure:3307: checking for pthread_attr_init in -lpthread" >&5
 ac_lib_var=`echo pthread'_'pthread_attr_init | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_save_LIBS="$LIBS"
 LIBS="-lpthread  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 3310 "configure"
+#line 3315 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char pthread_attr_init();
 
 int main() {
 pthread_attr_init()
 ; return 0; }
 EOF
-if { (eval echo configure:3321: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3326: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=no"
 fi
@@ -3331,36 +3336,36 @@ LIBS="$ac_save_LIBS"
 
 fi
 if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
   echo "$ac_t""yes" 1>&6
   _HAVE_PTHREADS=1 _PTHREAD_LDFLAGS="-lpthread"
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for pthread_attr_init in -lc_r""... $ac_c" 1>&6
-echo "configure:3340: checking for pthread_attr_init in -lc_r" >&5
+echo "configure:3345: checking for pthread_attr_init in -lc_r" >&5
 ac_lib_var=`echo c_r'_'pthread_attr_init | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_save_LIBS="$LIBS"
 LIBS="-lc_r  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 3348 "configure"
+#line 3353 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char pthread_attr_init();
 
 int main() {
 pthread_attr_init()
 ; return 0; }
 EOF
-if { (eval echo configure:3359: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3364: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=no"
 fi
@@ -3369,36 +3374,36 @@ LIBS="$ac_save_LIBS"
 
 fi
 if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
   echo "$ac_t""yes" 1>&6
   _HAVE_PTHREADS=1 _PTHREAD_LDFLAGS="-lc_r"
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for pthread_attr_init in -lc""... $ac_c" 1>&6
-echo "configure:3378: checking for pthread_attr_init in -lc" >&5
+echo "configure:3383: checking for pthread_attr_init in -lc" >&5
 ac_lib_var=`echo c'_'pthread_attr_init | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_save_LIBS="$LIBS"
 LIBS="-lc  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 3386 "configure"
+#line 3391 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char pthread_attr_init();
 
 int main() {
 pthread_attr_init()
 ; return 0; }
 EOF
-if { (eval echo configure:3397: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3402: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=no"
 fi
@@ -3515,17 +3520,17 @@ if test "${enable_ipv6+set}" = set; then
       fi
 fi
 
 
 if test -n "$USE_PTHREADS"; then
       rm -f conftest*
    ac_cv_have_dash_pthread=no
    echo $ac_n "checking whether ${CC-cc} accepts -pthread""... $ac_c" 1>&6
-echo "configure:3524: checking whether ${CC-cc} accepts -pthread" >&5
+echo "configure:3529: checking whether ${CC-cc} accepts -pthread" >&5
    echo 'int main() { return 0; }' | cat > conftest.c
    ${CC-cc} -pthread -o conftest conftest.c > conftest.out 2>&1
    if test $? -eq 0; then
 	if test -z "`egrep -i '(unrecognize|unknown)' conftest.out | grep pthread`" && test -z "`egrep -i '(error|incorrect)' conftest.out`" ; then
 	    ac_cv_have_dash_pthread=yes
 	    CFLAGS="$CFLAGS -pthread"
 	    CXXFLAGS="$CXXFLAGS -pthread"
 	fi
@@ -3585,22 +3590,22 @@ EOF
 	    cat >> confdefs.h <<\EOF
 #define _REENTRANT 1
 EOF
 
 	    ;;
     esac
 
     echo $ac_n "checking for pthread_create""... $ac_c" 1>&6
-echo "configure:3594: checking for pthread_create" >&5
+echo "configure:3599: checking for pthread_create" >&5
 if eval "test \"`echo '$''{'ac_cv_func_pthread_create'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3599 "configure"
+#line 3604 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char pthread_create(); below.  */
 #include <assert.h>
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char pthread_create();
@@ -3613,17 +3618,17 @@ int main() {
 #if defined (__stub_pthread_create) || defined (__stub___pthread_create)
 choke me
 #else
 pthread_create();
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:3622: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3627: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_pthread_create=yes"
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   eval "ac_cv_func_pthread_create=no"
 fi
@@ -3632,36 +3637,36 @@ fi
 
 if eval "test \"`echo '$ac_cv_func_'pthread_create`\" = yes"; then
   echo "$ac_t""yes" 1>&6
   :
 else
   echo "$ac_t""no" 1>&6
 
        echo $ac_n "checking for pthread_create in -lpthread""... $ac_c" 1>&6
-echo "configure:3641: checking for pthread_create in -lpthread" >&5
+echo "configure:3646: checking for pthread_create in -lpthread" >&5
 ac_lib_var=`echo pthread'_'pthread_create | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_save_LIBS="$LIBS"
 LIBS="-lpthread  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 3649 "configure"
+#line 3654 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char pthread_create();
 
 int main() {
 pthread_create()
 ; return 0; }
 EOF
-if { (eval echo configure:3660: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3665: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=no"
 fi
@@ -3750,22 +3755,22 @@ EOF
                 PR_MD_ASFILES="$PR_MD_ASFILES os_SunOS_32.s"
             fi
         fi
     fi
     ;;
 esac
 
 echo $ac_n "checking for dlopen""... $ac_c" 1>&6
-echo "configure:3759: checking for dlopen" >&5
+echo "configure:3764: checking for dlopen" >&5
 if eval "test \"`echo '$''{'ac_cv_func_dlopen'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3764 "configure"
+#line 3769 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char dlopen(); below.  */
 #include <assert.h>
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char dlopen();
@@ -3778,17 +3783,17 @@ int main() {
 #if defined (__stub_dlopen) || defined (__stub___dlopen)
 choke me
 #else
 dlopen();
 #endif
 
 ; return 0; }
 EOF
-if { (eval echo configure:3787: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3792: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_dlopen=yes"
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   eval "ac_cv_func_dlopen=no"
 fi
@@ -3797,36 +3802,36 @@ fi
 
 if eval "test \"`echo '$ac_cv_func_'dlopen`\" = yes"; then
   echo "$ac_t""yes" 1>&6
   :
 else
   echo "$ac_t""no" 1>&6
 
     echo $ac_n "checking for dlopen in -ldl""... $ac_c" 1>&6
-echo "configure:3806: checking for dlopen in -ldl" >&5
+echo "configure:3811: checking for dlopen in -ldl" >&5
 ac_lib_var=`echo dl'_'dlopen | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_save_LIBS="$LIBS"
 LIBS="-ldl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 3814 "configure"
+#line 3819 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char dlopen();
 
 int main() {
 dlopen()
 ; return 0; }
 EOF
-if { (eval echo configure:3825: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3830: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=no"
 fi
@@ -3911,16 +3916,58 @@ fi
 
 
 
 
 
 
 
 
+MAKEFILES="
+Makefile 
+config/Makefile
+config/autoconf.mk
+config/nsprincl.mk
+config/nsprincl.sh
+lib/Makefile 
+lib/ds/Makefile 
+lib/libc/Makefile 
+lib/libc/include/Makefile 
+lib/libc/src/Makefile 
+pr/Makefile 
+pr/include/Makefile 
+pr/include/md/Makefile 
+pr/include/obsolete/Makefile 
+pr/include/private/Makefile 
+pr/src/Makefile 
+pr/src/io/Makefile 
+pr/src/linking/Makefile 
+pr/src/malloc/Makefile 
+pr/src/md/Makefile 
+pr/src/md/${PR_MD_ARCH_DIR}/Makefile 
+pr/src/memory/Makefile 
+pr/src/misc/Makefile 
+pr/src/threads/Makefile 
+pr/tests/Makefile 
+pr/tests/dll/Makefile 
+"
+
+
+if test -z "$USE_PTHREADS" && test -z "$USE_BTHREADS"; then
+    MAKEFILES="$MAKEFILES pr/src/threads/combined/Makefile"
+elif test -n "$USE_PTHREADS"; then
+    MAKEFILES="$MAKEFILES pr/src/pthreads/Makefile"
+elif test -n "$USE_BTHREADS"; then
+    MAKEFILES="$MAKEFILES pr/src/bthreads/Makefile"
+fi
+
+if test -n "$USE_CPLUS"; then
+    MAKEFILES="$MAKEFILES pr/src/cplus/Makefile pr/src/cplus/tests/Makefile"
+fi
+
 trap '' 1 2 15
 cat > confcache <<\EOF
 # This file is a shell script that caches the results of configure
 # tests run on this system so they can be shared between configure
 # scripts and configure runs.  It is not useful on other systems.
 # If it contains results you don't want to keep, you may remove or edit it.
 #
 # By default, configure uses ./config.cache as the cache file,
@@ -4024,60 +4071,17 @@ do
     echo "\$ac_cs_usage"; exit 0 ;;
   *) echo "\$ac_cs_usage"; exit 1 ;;
   esac
 done
 
 ac_given_srcdir=$srcdir
 ac_given_INSTALL="$INSTALL"
 
-trap 'rm -fr `echo "
-Makefile 
-config/Makefile
-config/autoconf.mk
-config/nsprincl.mk
-config/nsprincl.sh
-lib/Makefile 
-lib/ds/Makefile 
-lib/libc/Makefile 
-lib/libc/include/Makefile 
-lib/libc/src/Makefile 
-lib/msgc/Makefile 
-lib/msgc/include/Makefile 
-lib/msgc/src/Makefile 
-lib/msgc/tests/Makefile
-lib/prstreams/Makefile 
-lib/tests/Makefile 
-pr/Makefile 
-pr/include/Makefile 
-pr/include/md/Makefile 
-pr/include/obsolete/Makefile 
-pr/include/private/Makefile 
-pr/src/Makefile 
-pr/src/bthreads/Makefile 
-pr/src/cplus/Makefile 
-pr/src/cplus/tests/Makefile 
-pr/src/io/Makefile 
-pr/src/linking/Makefile 
-pr/src/malloc/Makefile 
-pr/src/md/Makefile 
-pr/src/md/beos/Makefile 
-pr/src/md/os2/Makefile 
-pr/src/md/unix/Makefile 
-pr/src/md/windows/Makefile 
-pr/src/memory/Makefile 
-pr/src/misc/Makefile 
-pr/src/pthreads/Makefile 
-pr/src/threads/Makefile 
-pr/src/threads/combined/Makefile 
-pr/tests/Makefile 
-pr/tests/dll/Makefile 
-pr/tests/w16gui/Makefile 
-tools/Makefile 
-" | sed "s/:[^ ]*//g"` conftest*; exit 1' 1 2 15
+trap 'rm -fr `echo "$MAKEFILES" | sed "s/:[^ ]*//g"` conftest*; exit 1' 1 2 15
 EOF
 cat >> $CONFIG_STATUS <<EOF
 
 # Protect against being on the right side of a sed subst in config.status.
 sed 's/%@/@@/; s/@%/@@/; s/%g\$/@g/; /@g\$/s/[\\\\&%]/\\\\&/g;
  s/@@/%@/; s/@@/@%/; s/@g\$/%g/' > conftest.subs <<\\CEOF
 $ac_vpsub
 $extrasub
@@ -4210,59 +4214,17 @@ while $ac_more_lines; do
 done
 if test -z "$ac_sed_cmds"; then
   ac_sed_cmds=cat
 fi
 EOF
 
 cat >> $CONFIG_STATUS <<EOF
 
-CONFIG_FILES=\${CONFIG_FILES-"Makefile 
-config/Makefile
-config/autoconf.mk
-config/nsprincl.mk
-config/nsprincl.sh
-lib/Makefile 
-lib/ds/Makefile 
-lib/libc/Makefile 
-lib/libc/include/Makefile 
-lib/libc/src/Makefile 
-lib/msgc/Makefile 
-lib/msgc/include/Makefile 
-lib/msgc/src/Makefile 
-lib/msgc/tests/Makefile
-lib/prstreams/Makefile 
-lib/tests/Makefile 
-pr/Makefile 
-pr/include/Makefile 
-pr/include/md/Makefile 
-pr/include/obsolete/Makefile 
-pr/include/private/Makefile 
-pr/src/Makefile 
-pr/src/bthreads/Makefile 
-pr/src/cplus/Makefile 
-pr/src/cplus/tests/Makefile 
-pr/src/io/Makefile 
-pr/src/linking/Makefile 
-pr/src/malloc/Makefile 
-pr/src/md/Makefile 
-pr/src/md/beos/Makefile 
-pr/src/md/os2/Makefile 
-pr/src/md/unix/Makefile 
-pr/src/md/windows/Makefile 
-pr/src/memory/Makefile 
-pr/src/misc/Makefile 
-pr/src/pthreads/Makefile 
-pr/src/threads/Makefile 
-pr/src/threads/combined/Makefile 
-pr/tests/Makefile 
-pr/tests/dll/Makefile 
-pr/tests/w16gui/Makefile 
-tools/Makefile 
-"}
+CONFIG_FILES=\${CONFIG_FILES-"$MAKEFILES"}
 EOF
 cat >> $CONFIG_STATUS <<\EOF
 for ac_file in .. $CONFIG_FILES; do if test "x$ac_file" != x..; then
   # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
   case "$ac_file" in
   *:*) ac_file_in=`echo "$ac_file"|sed 's%[^:]*:%%'`
        ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;;
   *) ac_file_in="${ac_file}.in" ;;
@@ -4323,9 +4285,8 @@ EOF
 cat >> $CONFIG_STATUS <<\EOF
 
 exit 0
 EOF
 chmod +x $CONFIG_STATUS
 rm -fr confdefs* $ac_clean_files
 test "$no_create" = yes || ${CONFIG_SHELL-/bin/sh} $CONFIG_STATUS || exit 1
 
-

--- a/configure.in
+++ b/configure.in
@@ -242,16 +242,17 @@ dnl ====================================
 OBJ_SUFFIX=o
 LIB_SUFFIX=a
 DLL_SUFFIX=so
 MKSHLIB='$(LD) $(DSO_LDOPTS) -o $@'
 PR_MD_ASFILES=
 PR_MD_CSRCS=
 PR_MD_ARCH_DIR=unix
 AR_FLAGS='cr $@'
+AS='$(CC)'
 
 OS_TARGET=`uname -s`
 OS_ARCH=`uname -s | sed -e 's|/|_|g'`
 OS_RELEASE=`uname -r`
 OS_TEST=`uname -m`
 
 dnl ========================================================
 dnl Override of system specific host options
@@ -573,16 +574,20 @@ case "$target" in
     case "${target_cpu}" in
     alpha)
         AC_DEFINE(_ALPHA_)
         AC_DEFINE(__alpha)
         CFLAGS="$CFLAGS -mieee"
         CXXFLAGS="$CXXFLAGS -mieee"
         _OPTIMIZE_FLAGS=-O2
         ;;
+    i?86)
+        PR_MD_ASFILES=os_Linux_x86.s
+        _OPTIMIZE_FLAGS=-O2
+        ;;
     m68k)
         _OPTIMIZE_FLAGS=-O
         CFLAGS="$CFLAGS -m68020-40"
         CXXFLAGS="$CXXFLAGS -m68020-40"
         ;;
     *)
         _OPTIMIZE_FLAGS=-O2
         ;;
@@ -1072,55 +1077,54 @@ AC_SUBST(AIX_LINK_OPTS)
 AC_SUBST(NOSUCHFILE)
 AC_SUBST(MOZ_OBJFORMAT)
 AC_SUBST(ULTRASPARC_LIBRARY)
 AC_SUBST(ULTRASPARC_FILTER_LIBRARY)
 
 dnl ========================================================
 dnl Generate output files.
 dnl ========================================================
-AC_OUTPUT([
+MAKEFILES="
 Makefile 
 config/Makefile
 config/autoconf.mk
 config/nsprincl.mk
 config/nsprincl.sh
 lib/Makefile 
 lib/ds/Makefile 
 lib/libc/Makefile 
 lib/libc/include/Makefile 
 lib/libc/src/Makefile 
-lib/msgc/Makefile 
-lib/msgc/include/Makefile 
-lib/msgc/src/Makefile 
-lib/msgc/tests/Makefile
-lib/prstreams/Makefile 
-lib/tests/Makefile 
 pr/Makefile 
 pr/include/Makefile 
 pr/include/md/Makefile 
 pr/include/obsolete/Makefile 
 pr/include/private/Makefile 
 pr/src/Makefile 
-pr/src/bthreads/Makefile 
-pr/src/cplus/Makefile 
-pr/src/cplus/tests/Makefile 
 pr/src/io/Makefile 
 pr/src/linking/Makefile 
 pr/src/malloc/Makefile 
 pr/src/md/Makefile 
-pr/src/md/beos/Makefile 
-pr/src/md/os2/Makefile 
-pr/src/md/unix/Makefile 
-pr/src/md/windows/Makefile 
+pr/src/md/${PR_MD_ARCH_DIR}/Makefile 
 pr/src/memory/Makefile 
 pr/src/misc/Makefile 
-pr/src/pthreads/Makefile 
 pr/src/threads/Makefile 
-pr/src/threads/combined/Makefile 
 pr/tests/Makefile 
 pr/tests/dll/Makefile 
-pr/tests/w16gui/Makefile 
-tools/Makefile 
-])
+"
+
+dnl lib/tests/Makefile
+dnl pr/tests/w16gui/Makefile
+dnl tools/Makefile
 
-dnl lib/prstreams/tests/testprstrm/Makefile 
-dnl lib/tests/windows/makefile 
+if test -z "$USE_PTHREADS" && test -z "$USE_BTHREADS"; then
+    MAKEFILES="$MAKEFILES pr/src/threads/combined/Makefile"
+elif test -n "$USE_PTHREADS"; then
+    MAKEFILES="$MAKEFILES pr/src/pthreads/Makefile"
+elif test -n "$USE_BTHREADS"; then
+    MAKEFILES="$MAKEFILES pr/src/bthreads/Makefile"
+fi
+
+if test -n "$USE_CPLUS"; then
+    MAKEFILES="$MAKEFILES pr/src/cplus/Makefile pr/src/cplus/tests/Makefile"
+fi
+
+AC_OUTPUT([$MAKEFILES])