(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

sysdeps/unix/sysv/linux/configure

@@ -115,6 +115,10 @@ case "$machine" in
     arch_minimum_kernel=2.0.10
     libc_cv_gcc_unwind_find_fde=yes
     ;;
+  mips*)
+    arch_minimum_kernel=2.4.0
+    libc_cv_gcc_unwind_find_fde=yes
+    ;;
   powerpc/powerpc32)
     libc_cv_gcc_unwind_find_fde=yes
     arch_minimum_kernel=2.0.10
@@ -134,10 +138,6 @@ case "$machine" in
     arch_minimum_kernel=2.3.99
     libc_cv_gcc_unwind_find_fde=yes
     ;;
-  sparc/sparc64*)
-    libc_cv_gcc_unwind_find_fde=yes
-    arch_minimum_kernel=2.4.21
-    ;;
   sparc*)
     libc_cv_gcc_unwind_find_fde=yes
     arch_minimum_kernel=2.0.10
@@ -224,12 +224,10 @@ fi
 # in /lib and /etc.
 case "$prefix" in
 /usr | /usr/)
-  # 64-bit libraries on bi-arch platforms go in /lib64 instead of /lib.
-  # Allow earlier configure scripts to handle libc_cv_slibdir, libdir,
-  # and libc_cv_localedir.
-  test -n "$libc_cv_slibdir" || \
+  # 64-bit libraries on bi-arch platforms go in /lib64 instead of /lib
   case $machine in
-  sparc/sparc64 | x86_64 | powerpc/powerpc64 | s390/s390-64)
+  sparc/sparc64 | x86_64 | powerpc/powerpc64 | s390/s390-64 | \
+  mips/mips64/n64/* )
     libc_cv_slibdir="/lib64"
     if test "$libdir" = '${exec_prefix}/lib'; then
       libdir='${exec_prefix}/lib64';
@@ -237,6 +235,14 @@ case "$prefix" in
       libc_cv_localedir='${exec_prefix}/lib/locale'
     fi
     ;;
+  mips/mips64/n32/* )
+    libc_cv_slibdir="/lib32"
+    if test "$libdir" = '${exec_prefix}/lib'; then
+      libdir='${exec_prefix}/lib32';
+      # Locale data can be shared between 32bit and 64bit libraries
+      libc_cv_localedir='${exec_prefix}/lib/locale'
+    fi
+    ;;
   *)
     libc_cv_slibdir="/lib"
     ;;
@@ -251,29 +257,38 @@ case "$prefix" in
   ;;
 esac
 
-# Under Linux the NPTL add-on should be available.
+# Under Linux the LinuxThreads or NPTL add-on should be available.
 case $add_ons in
+  # Only one of the add-ons should be available.
+  *linuxthreads*nptl*|*nptl*linuxthreads*)
+    echo "\
+*** LinuxThreads and NPTL add-ons are both available.  Only one must be used."
+    exit 1
+    ;;
   # It is available.  Good.
+  *linuxthreads*)
+    linuxthreads_missing=
+    ;;
   *nptl*)
-    nptl_missing=
+    linuxthreads_missing=
     ;;
   *)
-    nptl_missing=yes
+    linuxthreads_missing=yes
     ;;
 esac
 
-if test "$nptl_missing"; then
+if test "$linuxthreads_missing"; then
   if test $enable_sanity = yes; then
     echo "\
 *** On GNU/Linux systems it is normal to compile GNU libc with the
-*** \`nptl' add-on.  Without that, the library will be
+*** \`linuxthreads' add-on.  Without that, the library will be
 *** incompatible with normal GNU/Linux systems.
 *** If you really mean to not use this add-on, run configure again
 *** using the extra parameter \`--disable-sanity-checks'."
     exit 1
   else
     echo "\
-*** WARNING: Are you sure you do not want to use the \`nptl'
+*** WARNING: Are you sure you do not want to use the \`linuxthreads'
 *** add-on?"
   fi
 fi
@@ -307,6 +322,9 @@ case "$machine" in
   ia64*)
     ldd_rewrite_script=../sysdeps/unix/sysv/linux/ia64/ldd-rewrite.sed
     ;;
+  mips/*64*)
+    ldd_rewrite_script=../sysdeps/unix/sysv/linux/mips/mips64/ldd-rewrite.sed
+    ;;
   s390*)
     ldd_rewrite_script=../sysdeps/unix/sysv/linux/s390/ldd-rewrite.sed
     ;;