configure.in: Fix --without/--disable cases for local-prefix, gxx-include-dir and checking.

        * configure.in: Fix --without/--disable cases for local-prefix,
        gxx-include-dir and checking.

From-SVN: r21464

3 files changed, 145 insertions, 106 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1f24630..fc00c84 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+Tue Jul 28 23:29:04 1998  Jason Merrill  <jason@yorick.cygnus.com>
+
+	* configure.in: Fix --without/--disable cases for local-prefix, 
+	gxx-include-dir and checking.
+
 Tue Jul 28 22:01:23 1998  David S. Miller  <davem@pierdol.cobaltmicro.com>
 
 	* configure.in (enable_haifa): Set by default for sparc64 too.
diff --git a/gcc/configure b/gcc/configure
index 9c420e7..9c1bc30 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -1,7 +1,7 @@
 #! /bin/sh
 
 # Guess values for system-dependent variables and create Makefiles.
-# Generated automatically using autoconf version 2.12 
+# Generated automatically using autoconf version 2.12.1 
 # Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.
 #
 # This configure script is free software; the Free Software Foundation
@@ -77,6 +77,7 @@ mandir='${prefix}/man'
 # Initialize some other variables.
 subdirs=
 MFLAGS= MAKEFLAGS=
+SHELL=${CONFIG_SHELL-/bin/sh}
 # Maximum number of lines to put in a shell here document.
 ac_max_here_lines=12
 
@@ -360,7 +361,7 @@ EOF
     verbose=yes ;;
 
   -version | --version | --versio | --versi | --vers)
-    echo "configure generated by autoconf version 2.12"
+    echo "configure generated by autoconf version 2.12.1"
     exit 0 ;;
 
   -with-* | --with-*)
@@ -596,12 +597,15 @@ fi
 
 
 # Specify the local prefix
+local_prefix=
 # Check whether --with-local-prefix or --without-local-prefix was given.
 if test "${with_local_prefix+set}" = set; then
   withval="$with_local_prefix"
-  local_prefix=$with_local_prefix
-else
-  local_prefix=/usr/local
+  case "${withval}" in
+yes)	{ echo "configure: error: bad value ${withval} given for local include directory prefix" 1>&2; exit 1; } ;;
+no)	;;
+*)	local_prefix=$with_local_prefix ;;
+esac
 fi
 
 
@@ -610,27 +614,39 @@ if [ x$local_prefix = x ]; then
 	local_prefix=/usr/local
 fi
 
+gxx_include_dir=
 # Specify the g++ header file directory
 # Check whether --with-gxx-include-dir or --without-gxx-include-dir was given.
 if test "${with_gxx_include_dir+set}" = set; then
   withval="$with_gxx_include_dir"
-  gxx_include_dir=$with_gxx_include_dir
-else
-  if test x${enable_version_specific_runtime_libs} = xyes; then
-gxx_include_dir='${libsubdir}/include/g++'
-else gxx_include_dir='${prefix}/include/g++'; fi
+  case "${withval}" in
+yes)	{ echo "configure: error: bad value ${withval} given for g++ include directory" 1>&2; exit 1; } ;;
+no)	;;
+*)	gxx_include_dir=$with_gxx_include_dir ;;
+esac
 fi
 
 
+if test x${gxx_include_dir} = x; then
+  if test x${enable_version_specific_runtime_libs} = xyes; then
+    gxx_include_dir='${libsubdir}/include/g++'
+  else
+    gxx_include_dir='${prefix}/include/g++'
+  fi
+fi
+
 # Enable expensive internal checks
 # Check whether --enable-checking or --disable-checking was given.
 if test "${enable_checking+set}" = set; then
   enableval="$enable_checking"
-  cat >> confdefs.h <<\EOF
+  case "${enableval}" in
+yes)	cat >> confdefs.h <<\EOF
 #define ENABLE_CHECKING 1
 EOF
-  
-
+ ;;
+no)	;;
+*)	{ echo "configure: error: bad value ${enableval} given for checking option" 1>&2; exit 1; } ;;
+esac
 fi
 
 
@@ -756,33 +772,33 @@ esac
 
 
 # Make sure we can run config.sub.
-if $ac_config_sub sun4 >/dev/null 2>&1; then :
+if ${CONFIG_SHELL-/bin/sh} $ac_config_sub sun4 >/dev/null 2>&1; then :
 else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
 fi
 
 echo $ac_n "checking host system type""... $ac_c" 1>&6
-echo "configure:765: checking host system type" >&5
+echo "configure:781: checking host system type" >&5
 
 host_alias=$host
 case "$host_alias" in
 NONE)
   case $nonopt in
   NONE)
-    if host_alias=`$ac_config_guess`; then :
+    if host_alias=`${CONFIG_SHELL-/bin/sh} $ac_config_guess`; then :
     else { echo "configure: error: can not guess host type; you must specify one" 1>&2; exit 1; }
     fi ;;
   *) host_alias=$nonopt ;;
   esac ;;
 esac
 
-host=`$ac_config_sub $host_alias`
+host=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $host_alias`
 host_cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
 host_vendor=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
 host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
 echo "$ac_t""$host" 1>&6
 
 echo $ac_n "checking target system type""... $ac_c" 1>&6
-echo "configure:786: checking target system type" >&5
+echo "configure:802: checking target system type" >&5
 
 target_alias=$target
 case "$target_alias" in
@@ -793,14 +809,14 @@ NONE)
   esac ;;
 esac
 
-target=`$ac_config_sub $target_alias`
+target=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $target_alias`
 target_cpu=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
 target_vendor=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
 target_os=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
 echo "$ac_t""$target" 1>&6
 
 echo $ac_n "checking build system type""... $ac_c" 1>&6
-echo "configure:804: checking build system type" >&5
+echo "configure:820: checking build system type" >&5
 
 build_alias=$build
 case "$build_alias" in
@@ -811,7 +827,7 @@ NONE)
   esac ;;
 esac
 
-build=`$ac_config_sub $build_alias`
+build=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $build_alias`
 build_cpu=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
 build_vendor=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
 build_os=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
@@ -827,7 +843,7 @@ test "$host_alias" != "$target_alias" &&
 # Extract the first word of "gcc", so it can be a program name with args.
 set dummy gcc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:831: checking for $ac_word" >&5
+echo "configure:847: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -856,7 +872,7 @@ if test -z "$CC"; then
   # Extract the first word of "cc", so it can be a program name with args.
 set dummy cc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:860: checking for $ac_word" >&5
+echo "configure:876: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -904,7 +920,7 @@ fi
 fi
 
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:908: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+echo "configure:924: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
 
 ac_ext=c
 # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -914,11 +930,11 @@ ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS
 cross_compiling=$ac_cv_prog_cc_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 918 "configure"
+#line 934 "configure"
 #include "confdefs.h"
 main(){return(0);}
 EOF
-if { (eval echo configure:922: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:938: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   ac_cv_prog_cc_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -938,12 +954,12 @@ if test $ac_cv_prog_cc_works = no; then
   { echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; }
 fi
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:942: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:958: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
 echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
 cross_compiling=$ac_cv_prog_cc_cross
 
 echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
-echo "configure:947: checking whether we are using GNU C" >&5
+echo "configure:963: checking whether we are using GNU C" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -952,7 +968,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:956: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:972: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gcc=yes
 else
   ac_cv_prog_gcc=no
@@ -967,7 +983,7 @@ if test $ac_cv_prog_gcc = yes; then
   ac_save_CFLAGS="$CFLAGS"
   CFLAGS=
   echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
-echo "configure:971: checking whether ${CC-cc} accepts -g" >&5
+echo "configure:987: checking whether ${CC-cc} accepts -g" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -995,7 +1011,7 @@ else
 fi
 
 echo $ac_n "checking whether ${MAKE-make} sets \${MAKE}""... $ac_c" 1>&6
-echo "configure:999: checking whether ${MAKE-make} sets \${MAKE}" >&5
+echo "configure:1015: checking whether ${MAKE-make} sets \${MAKE}" >&5
 set dummy ${MAKE-make}; ac_make=`echo "$2" | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_prog_make_${ac_make}_set'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1028,7 +1044,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1032: checking for $ac_word" >&5
+echo "configure:1048: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AWK'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1059,7 +1075,7 @@ done
 # Extract the first word of "flex", so it can be a program name with args.
 set dummy flex; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1063: checking for $ac_word" >&5
+echo "configure:1079: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_LEX'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1092,7 +1108,7 @@ then
   *) ac_lib=l ;;
   esac
   echo $ac_n "checking for yywrap in -l$ac_lib""... $ac_c" 1>&6
-echo "configure:1096: checking for yywrap in -l$ac_lib" >&5
+echo "configure:1112: checking for yywrap in -l$ac_lib" >&5
 ac_lib_var=`echo $ac_lib'_'yywrap | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1100,7 +1116,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-l$ac_lib  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1104 "configure"
+#line 1120 "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
@@ -1111,7 +1127,7 @@ int main() {
 yywrap()
 ; return 0; }
 EOF
-if { (eval echo configure:1115: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:1131: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1134,7 +1150,7 @@ fi
 fi
 
 echo $ac_n "checking whether ln works""... $ac_c" 1>&6
-echo "configure:1138: checking whether ln works" >&5
+echo "configure:1154: checking whether ln works" >&5
 if eval "test \"`echo '$''{'gcc_cv_prog_LN'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1166,7 +1182,7 @@ else
 fi
 
 echo $ac_n "checking whether ln -s works""... $ac_c" 1>&6
-echo "configure:1170: checking whether ln -s works" >&5
+echo "configure:1186: checking whether ln -s works" >&5
 if eval "test \"`echo '$''{'gcc_cv_prog_LN_S'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1198,19 +1214,19 @@ else
 fi
 
 echo $ac_n "checking for volatile""... $ac_c" 1>&6
-echo "configure:1202: checking for volatile" >&5
+echo "configure:1218: checking for volatile" >&5
 if eval "test \"`echo '$''{'gcc_cv_c_volatile'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1207 "configure"
+#line 1223 "configure"
 #include "confdefs.h"
 
 int main() {
 volatile int foo;
 ; return 0; }
 EOF
-if { (eval echo configure:1214: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1230: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   gcc_cv_c_volatile=yes
 else
@@ -1233,7 +1249,7 @@ fi
 # Extract the first word of "ranlib", so it can be a program name with args.
 set dummy ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1237: checking for $ac_word" >&5
+echo "configure:1253: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1264,7 +1280,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1268: checking for $ac_word" >&5
+echo "configure:1284: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_YACC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1304,7 +1320,7 @@ test -n "$YACC" || YACC="yacc"
 # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
 # ./install, which can be erroneously created by make from ./install.sh.
 echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6
-echo "configure:1308: checking for a BSD compatible install" >&5
+echo "configure:1324: checking for a BSD compatible install" >&5
 if test -z "$INSTALL"; then
 if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1355,7 +1371,7 @@ test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
 
 
 echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
-echo "configure:1359: checking how to run the C preprocessor" >&5
+echo "configure:1375: checking how to run the C preprocessor" >&5
 # On Suns, sometimes $CPP names a directory.
 if test -n "$CPP" && test -d "$CPP"; then
   CPP=
@@ -1370,13 +1386,13 @@ else
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp.
   cat > conftest.$ac_ext <<EOF
-#line 1374 "configure"
+#line 1390 "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:1380: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1396: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   :
@@ -1387,13 +1403,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -E -traditional-cpp"
   cat > conftest.$ac_ext <<EOF
-#line 1391 "configure"
+#line 1407 "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:1397: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1413: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   :
@@ -1416,12 +1432,12 @@ fi
 echo "$ac_t""$CPP" 1>&6
 
 echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
-echo "configure:1420: checking for ANSI C header files" >&5
+echo "configure:1436: checking for ANSI C header files" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1425 "configure"
+#line 1441 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -1429,7 +1445,7 @@ else
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1433: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1449: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1446,7 +1462,7 @@ rm -f conftest*
 if test $ac_cv_header_stdc = yes; then
   # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 1450 "configure"
+#line 1466 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -1464,7 +1480,7 @@ fi
 if test $ac_cv_header_stdc = yes; then
   # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 1468 "configure"
+#line 1484 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -1485,7 +1501,7 @@ if test "$cross_compiling" = yes; then
   :
 else
   cat > conftest.$ac_ext <<EOF
-#line 1489 "configure"
+#line 1505 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -1496,7 +1512,7 @@ if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
 
 EOF
-if { (eval echo configure:1500: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1516: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -1520,12 +1536,12 @@ EOF
 fi
 
 echo $ac_n "checking whether time.h and sys/time.h may both be included""... $ac_c" 1>&6
-echo "configure:1524: checking whether time.h and sys/time.h may both be included" >&5
+echo "configure:1540: checking whether time.h and sys/time.h may both be included" >&5
 if eval "test \"`echo '$''{'ac_cv_header_time'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1529 "configure"
+#line 1545 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/time.h>
@@ -1534,7 +1550,7 @@ int main() {
 struct tm *tp;
 ; return 0; }
 EOF
-if { (eval echo configure:1538: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1554: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_header_time=yes
 else
@@ -1558,17 +1574,17 @@ for ac_hdr in limits.h stddef.h string.h strings.h stdlib.h time.h fcntl.h unist
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:1562: checking for $ac_hdr" >&5
+echo "configure:1578: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1567 "configure"
+#line 1583 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1572: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1588: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1598,17 +1614,17 @@ done
 # Check for thread headers.
 ac_safe=`echo "thread.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for thread.h""... $ac_c" 1>&6
-echo "configure:1602: checking for thread.h" >&5
+echo "configure:1618: checking for thread.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1607 "configure"
+#line 1623 "configure"
 #include "confdefs.h"
 #include <thread.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1612: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1628: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1632,17 +1648,17 @@ fi
 
 ac_safe=`echo "pthread.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for pthread.h""... $ac_c" 1>&6
-echo "configure:1636: checking for pthread.h" >&5
+echo "configure:1652: checking for pthread.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1641 "configure"
+#line 1657 "configure"
 #include "confdefs.h"
 #include <pthread.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1646: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1662: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1668,12 +1684,12 @@ fi
 # See if the system preprocessor understands the ANSI C preprocessor
 # stringification operator.
 echo $ac_n "checking whether cpp understands the stringify operator""... $ac_c" 1>&6
-echo "configure:1672: checking whether cpp understands the stringify operator" >&5
+echo "configure:1688: checking whether cpp understands the stringify operator" >&5
 if eval "test \"`echo '$''{'gcc_cv_c_have_stringify'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1677 "configure"
+#line 1693 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -1681,7 +1697,7 @@ int main() {
 char *test = S(foo);
 ; return 0; }
 EOF
-if { (eval echo configure:1685: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1701: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   gcc_cv_c_have_stringify=yes
 else
@@ -1704,12 +1720,12 @@ fi
 # Use <inttypes.h> only if it exists,
 # doesn't clash with <sys/types.h>, and declares intmax_t.
 echo $ac_n "checking for inttypes.h""... $ac_c" 1>&6
-echo "configure:1708: checking for inttypes.h" >&5
+echo "configure:1724: checking for inttypes.h" >&5
 if eval "test \"`echo '$''{'gcc_cv_header_inttypes_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1713 "configure"
+#line 1729 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <inttypes.h>
@@ -1717,7 +1733,7 @@ int main() {
 intmax_t i = -1;
 ; return 0; }
 EOF
-if { (eval echo configure:1721: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1737: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cat >> confdefs.h <<EOF
 #define HAVE_INTTYPES_H 1
@@ -1740,12 +1756,12 @@ for ac_func in strtoul bsearch strerror putenv popen bcopy bzero bcmp \
 	sysconf isascii gettimeofday
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1744: checking for $ac_func" >&5
+echo "configure:1760: 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 1749 "configure"
+#line 1765 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1768,7 +1784,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1772: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:1788: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -1797,12 +1813,12 @@ done
 #AC_CHECK_TYPE(wchar_t, unsigned int)
 
 echo $ac_n "checking for vprintf""... $ac_c" 1>&6
-echo "configure:1801: checking for vprintf" >&5
+echo "configure:1817: checking for vprintf" >&5
 if eval "test \"`echo '$''{'ac_cv_func_vprintf'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1806 "configure"
+#line 1822 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char vprintf(); below.  */
@@ -1825,7 +1841,7 @@ vprintf();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1829: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:1845: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_func_vprintf=yes"
 else
@@ -1849,12 +1865,12 @@ fi
 
 if test "$ac_cv_func_vprintf" != yes; then
 echo $ac_n "checking for _doprnt""... $ac_c" 1>&6
-echo "configure:1853: checking for _doprnt" >&5
+echo "configure:1869: checking for _doprnt" >&5
 if eval "test \"`echo '$''{'ac_cv_func__doprnt'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1858 "configure"
+#line 1874 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char _doprnt(); below.  */
@@ -1877,7 +1893,7 @@ _doprnt();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1881: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:1897: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_func__doprnt=yes"
 else
@@ -1913,7 +1929,7 @@ fi
 
 
 echo $ac_n "checking whether the printf functions support %p""... $ac_c" 1>&6
-echo "configure:1917: checking whether the printf functions support %p" >&5
+echo "configure:1933: checking whether the printf functions support %p" >&5
 if eval "test \"`echo '$''{'gcc_cv_func_printf_ptr'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1921,7 +1937,7 @@ else
   gcc_cv_func_printf_ptr=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 1925 "configure"
+#line 1941 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 
@@ -1934,7 +1950,7 @@ main()
   exit (p != q);
 }
 EOF
-if { (eval echo configure:1938: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1954: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
 then
   gcc_cv_func_printf_ptr=yes
 else
@@ -1962,12 +1978,12 @@ for ac_func in malloc realloc calloc free bcopy bzero bcmp \
 	index rindex getenv atol sbrk abort atof strerror getcwd getwd
 do
 echo $ac_n "checking whether $ac_func must be declared""... $ac_c" 1>&6
-echo "configure:1966: checking whether $ac_func must be declared" >&5
+echo "configure:1982: checking whether $ac_func must be declared" >&5
 if eval "test \"`echo '$''{'gcc_cv_decl_needed_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1971 "configure"
+#line 1987 "configure"
 #include "confdefs.h"
 
 #include <stdio.h>
@@ -1995,7 +2011,7 @@ int main() {
 char *(*pfn) = (char *(*)) $ac_func
 ; return 0; }
 EOF
-if { (eval echo configure:1999: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2015: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "gcc_cv_decl_needed_$ac_func=no"
 else
@@ -2024,12 +2040,12 @@ done
 for ac_func in getrlimit setrlimit
 do
 echo $ac_n "checking whether $ac_func must be declared""... $ac_c" 1>&6
-echo "configure:2028: checking whether $ac_func must be declared" >&5
+echo "configure:2044: checking whether $ac_func must be declared" >&5
 if eval "test \"`echo '$''{'gcc_cv_decl_needed_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2033 "configure"
+#line 2049 "configure"
 #include "confdefs.h"
 
 #include <stdio.h>
@@ -2061,7 +2077,7 @@ int main() {
 char *(*pfn) = (char *(*)) $ac_func
 ; return 0; }
 EOF
-if { (eval echo configure:2065: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2081: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "gcc_cv_decl_needed_$ac_func=no"
 else
@@ -2088,12 +2104,12 @@ done
 
 
 echo $ac_n "checking for sys_siglist declaration in signal.h or unistd.h""... $ac_c" 1>&6
-echo "configure:2092: checking for sys_siglist declaration in signal.h or unistd.h" >&5
+echo "configure:2108: checking for sys_siglist declaration in signal.h or unistd.h" >&5
 if eval "test \"`echo '$''{'ac_cv_decl_sys_siglist'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2097 "configure"
+#line 2113 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <signal.h>
@@ -2105,7 +2121,7 @@ int main() {
 char *msg = *(sys_siglist + 1);
 ; return 0; }
 EOF
-if { (eval echo configure:2109: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2125: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_decl_sys_siglist=yes
 else
@@ -5254,7 +5270,7 @@ fi
 
 # Figure out what assembler alignment features are present.
 echo $ac_n "checking assembler alignment features""... $ac_c" 1>&6
-echo "configure:5258: checking assembler alignment features" >&5
+echo "configure:5274: checking assembler alignment features" >&5
 gcc_cv_as=
 gcc_cv_as_alignment_features=
 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,gcc$,gas,'`
@@ -5629,7 +5645,7 @@ EOF
 # Ultrix sh set writes to stderr and can't be redirected directly,
 # and sets the high bit in the cache file unless we assign to the vars.
 (set) 2>&1 |
-  case `(ac_space=' '; set) 2>&1` in
+  case `(ac_space=' '; set) 2>&1 | grep ac_space` in
   *ac_space=\ *)
     # `set' does not quote correctly, so add quotes (double-quote substitution
     # turns \\\\ into \\, and sed turns \\ into \).
@@ -5696,7 +5712,7 @@ do
     echo "running \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion"
     exec \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion ;;
   -version | --version | --versio | --versi | --vers | --ver | --ve | --v)
-    echo "$CONFIG_STATUS generated by autoconf version 2.12"
+    echo "$CONFIG_STATUS generated by autoconf version 2.12.1"
     exit 0 ;;
   -help | --help | --hel | --he | --h)
     echo "\$ac_cs_usage"; exit 0 ;;
@@ -5715,6 +5731,7 @@ sed 's/%@/@@/; s/@%/@@/; s/%g\$/@g/; /@g\$/s/[\\\\&%]/\\\\&/g;
  s/@@/%@/; s/@@/@%/; s/@g\$/%g/' > conftest.subs <<\\CEOF
 $ac_vpsub
 $extrasub
+s%@SHELL@%$SHELL%g
 s%@CFLAGS@%$CFLAGS%g
 s%@CPPFLAGS@%$CPPFLAGS%g
 s%@CXXFLAGS@%$CXXFLAGS%g
diff --git a/gcc/configure.in b/gcc/configure.in
index ac276ab..ef07fbb 100644
--- a/gcc/configure.in
+++ b/gcc/configure.in
@@ -56,30 +56,47 @@ elf="$with_elf",
 elf=no)
 
 # Specify the local prefix
+local_prefix=
 AC_ARG_WITH(local-prefix,
 [  --with-local-prefix=DIR specifies directory to put local include.],
-local_prefix=$with_local_prefix,
-local_prefix=/usr/local)
+[case "${withval}" in
+yes)	AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
+no)	;;
+*)	local_prefix=$with_local_prefix ;;
+esac])
 
 # Default local prefix if it is empty
 if [[ x$local_prefix = x ]]; then
 	local_prefix=/usr/local
 fi
 
+gxx_include_dir=
 # Specify the g++ header file directory
 AC_ARG_WITH(gxx-include-dir,
 [  --with-gxx-include-dir=DIR
                           specifies directory to put g++ header files.],
-gxx_include_dir=$with_gxx_include_dir,
-if test x${enable_version_specific_runtime_libs} = xyes; then
-gxx_include_dir='${libsubdir}/include/g++'
-else gxx_include_dir='${prefix}/include/g++'; fi)
+[case "${withval}" in
+yes)	AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
+no)	;;
+*)	gxx_include_dir=$with_gxx_include_dir ;;
+esac])
+
+if test x${gxx_include_dir} = x; then
+  if test x${enable_version_specific_runtime_libs} = xyes; then
+    gxx_include_dir='${libsubdir}/include/g++'
+  else
+    gxx_include_dir='${prefix}/include/g++'
+  fi
+fi
 
 # Enable expensive internal checks
 AC_ARG_ENABLE(checking,
 [  --enable-checking       enable expensive run-time checks.],
-AC_DEFINE(ENABLE_CHECKING)  
-)
+[case "${enableval}" in
+yes)	AC_DEFINE(ENABLE_CHECKING) ;;
+no)	;;
+*)	AC_MSG_ERROR(bad value ${enableval} given for checking option) ;;
+esac])
 
 # Enable use of cpplib for C.
 cpp_main=cccp