*** empty log message ***
[deliverable/binutils-gdb.git] / configure
index 74bf72660a2ca07f5a01febecd1dbcbdc3f3eb4b..2eebca5bc027edfe33a3bff3c9617ca15e784e4c 100755 (executable)
--- a/configure
+++ b/configure
@@ -3,8 +3,6 @@
 # Configuration script
 #   Copyright (C) 1988, 1990, 1991, 1992 Free Software Foundation, Inc.
 
-#This file is part of GNU.
-
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2 of the License, or
@@ -22,6 +20,8 @@
 # Please email any bugs, comments, and/or additions to this file to:
 # configure@cygnus.com
 
+# This file was written by K. Richard Pixley.
+
 #
 # Shell script to create proper links to machine-dependent files in
 # preparation for compilation.
@@ -31,9 +31,6 @@
 #      config.status is removed.
 #
 
-# NOTE: This script contains support for a Cygnus experimental feature, called
-# +subdirs, which is currently, tentatively, de-supported.
-
 export PATH || (echo "OOPS, this isn't sh.  Desperation time.  I will feed myself to sh."; sh $0 $argv; kill $$)
 
 remove=rm
@@ -50,37 +47,33 @@ symbolic_link='ln -s'
 Makefile=Makefile
 Makefile_in=Makefile.in
 arguments=$*
-commontargets=
 configdirs=
-datadir=
-datadiroption=
-defaulttargets=
+exec_prefix=
+exec_prefixoption=
 fatal=
 floating_point=default
 gas=default
-hosts=
-#hostsubdir=
-#namesubdir=
-next_prefix=
+host_alias=
+host_makefile_frag=
 next_host=
-#next_namesubdir=
-#next_objdir=
+next_prefix=
 next_site=
 next_srcdir=
 next_target=
 next_tmpdir=
 norecursion=
-#objdir=
-#objdiroption=
 prefix=/usr/local
 progname=
-recurring=
-removing=
+program_prefix=
+program_prefix_option=
+silent=
+site=
+site_option=
+site_makefile_frag=
 srcdir=
 srctrigger=
-target=
-targets=
-#targetsubdir=
+target_alias=
+target_makefile_frag=
 undefinedargs=
 verbose=
 version="$Revision$"
@@ -90,46 +83,50 @@ NO_EDIT="This file was generated automatically by configure.  Do not edit."
 
 ## this is a little touchy and won't always work, but...
 ##
-## if the argv[0] starts with a slash then it is an absolute name that can be
-## used as is.
+## if the argv[0] starts with a slash then it is an absolute name that can (and
+## must) be used as is.
 ##
 ## otherwise, if argv[0] has no slash in it, we can assume that it is on the
 ## path.  Since PATH might include "." we also add `pwd` to the end of PATH.
 ##
-## otherwise we prepend `pwd` to $0 and hope that will give us an absolute
-## path.
-##
 
 PWD=`pwd`
+progname=$0
 
-if echo $0 | grep '^/' > /dev/null ; then
-       progname=$0
-elif echo $0 | grep '/' > /dev/null ; then
-       progname=${PWD}/$0
-else
-       progname=$0
+case "${progname}" in
+/*) ;;
+*/*) ;;
+*)
        PATH=$PATH:${PWD} ; export PATH
-fi
+       ;;
+esac
 
 for arg in $*;
 do
        # handle things that might have args following as separate words
        if [ -n "${next_prefix}" ] ; then prefix=${arg} ; prefixoption="-prefix=${prefix}" ; next_prefix=
-       elif [ -n "${next_datadir}" ] ; then datadir=${arg} ; datadiroption="-datadir=${datadir}" ; next_datadir=
-#      elif [ -n "${next_namesubdir}" ] ; then \
-#              namesubdir=${arg} ; namesubdiroption="--namesubdir=${namesubdir}" ; next_namesubdir=
-#      elif [ -n "${next_objdir}" ] ; then objdir=${arg} ; objdiroption="--objdir=${objdir}" ; next_objdir=
-       elif [ -n "${next_site}" ] ; then site=${arg} ; next_site=
-       elif [ -n "${next_srcdir}" ] ; then srcdir=${arg} ; next_srcdir=                
+       elif [ -n "${next_exec_prefix}" ] ; then
+               exec_prefix=${arg}
+               exec_prefixoption="-exec_prefix=${exec_prefix}"
+               next_exec_prefix=
+       elif [ -n "${next_site}" ] ; then site=${arg} ; site_option=-site=${site} ; next_site=
+       # remove any possible trailing slash from srcdir.  See note below.
+       elif [ -n "${next_srcdir}" ] ; then srcdir=`echo ${arg} | sed -e 's:/$::'` ; next_srcdir=
+       elif [ -n "${next_program_prefix}" ] ; then
+               program_prefix=${arg}
+               program_prefixoption="-program_prefix=${program_prefix}"
+               next_program_prefix=
        elif [ -n "${next_target}" ] ; then
                next_target=
-               if [ -z "${targets}" ] ; then
-                       newtargets="${targets} ${arg}"
-                       targets="${newtargets}"
-               else
-                       echo '***' Can only configure for one target at a time.
+               case "${target_alias}" in
+               "")
+                       target_alias="${arg}"
+                       ;;
+               *)
+                       echo '***' Can only configure for one target at a time.  1>&2
                        fatal=yes
-               fi
+                       ;;
+               esac
        elif [ -n "${next_tmpdir}" ] ; then
                next_tmpdir=
                tmpdiroption="--tmpdir=${arg}"
@@ -137,12 +134,12 @@ do
 
        else
                case ${arg} in
-               -datadir=* | --datadir=* | --datadi=* | --datad=* | --data=* | --dat=* | --da=* | --d=*)
-                       datadir=`echo ${arg} | sed 's/^[-a-z]*=//'`
-                       datadiroption=${arg}
+               -exec_prefix=* | --exec_prefix=* | --exec_prefi=* | --exec_pref=* | --exec_pre=* | --exec_pr=* | --exec_p=* | --exec_=* | --exec=* | --exe=* | --ex=* | --e=*)
+                       exec_prefix=`echo ${arg} | sed 's/^[-a-z_]*=//'`
+                       exec_prefixoption=${arg}
                        ;;
-               -datadir | --datadir | --datadi | --datad | --data | --dat | --da | --d)
-                       next_datadir=yes
+               -exec_prefix | --exec_prefix | --exec_prefi | --exec_pref | --exec_pre | --exec_pr | --exec_p | --exec_ | --exec | --exe | --ex | --e)
+                       next_exec_prefix=yes
                        ;;
                -gas | --g*)
                        gas=yes
@@ -151,79 +148,65 @@ do
                        fatal=true
                        ;;
                -host=* | --host=* | --hos=* | --ho=*)
-#                      if [ -n "${hosts}" ] ; then
-#                              subdirs="--subdirs"
-#                      fi
-
-                       if [ -z "${hosts}" ] ; then
-                               newhosts="${hosts} `echo ${arg} | sed 's/^[-a-z]*=//'`"
-                               hosts="${newhosts}"
-                       else
-                               echo '***' Can only configure for one host at a time.
+                       case "${host_alias}" in
+                       "")
+                               host_alias="`echo ${arg} | sed 's/^[-a-z]*=//'`"
+                               ;;
+                       *)
+                               echo '***' Can only configure for one host at a time.  1>&2
                                fatal=yes
-                       fi
+                               ;;
+                       esac
                        ;;
-#              -namesubdir | --namesubdir | --namesubdi | --namesubd | --namesub | --namesu | --names | --name | --nam | --na)
-#                      next_namesubdir=yes
-#                      ;;
-#              -namesubdir=* | --namesubdir=* | --namesubdi=* | --namesubd=* | --namesub=* | --namesu=* | --names=* | --name=* | --nam=* | --na=*)
-#                      namesubdir=`echo ${arg} | sed 's/^[-a-z]*=//'`
-#                      namesubdiroption=${arg}
-#                      ;;
                -nfp | --nf*)
                        floating_point=no
                        ;;
                -norecursion | --no*)
                        norecursion=true
                        ;;
-#              -objdir=* | --objdir=* | --objdi=* | --objd=* | --obj=* | --ob=* | --o=*)
-#                      objdiroption=${arg}
-#                      objdir=`echo ${arg} | sed 's/^[-a-z]*=//'`
-#                      ;;
-#              -objdir | --objdir | --objdi | --objd | --obj | --ob | --o)
-#                      next_objdir=yes
-#                      ;;
-               -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+               -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=*)
                        prefix=`echo ${arg} | sed 's/^[-a-z]*=//'`
                        prefixoption=${arg}
                        ;;
-               -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+               -prefix | --prefix | --prefi | --pref | --pre)
                        next_prefix=yes
                        ;;
-               -recurring | --recurring | --recurrin | --recurri | --recurr | --recur | --recu | --rec | --re)
-                       recurring=true
-                       arguments=`echo ${arguments} | sed "s:${arg}::"`
+               -program_prefix=* | --program_prefix=* | --program_prefi=* | --program_pref=* | --program_pre=* | --program_pr=* | --program_p=* | --program_=* | --program=* | --progra=* | --progr=* | --prog=* | --pro=*)
+                       program_prefix=`echo ${arg} | sed 's/^[-a-z]*=//'`
+                       program_prefixoption=${arg}
+                       ;;
+               -program_prefix | --program_prefix | --program_prefi | --program_pref | --program_pre | --program_pr | --program_p | --program_ | --program | --progra | --progr | --prog | --pro)
+                       next_program_prefix=yes
                        ;;
-               -rm | --rm)
-                       removing=${arg}
+               -s | -silent | --silent | --silen | --sile | --sil)
+                       silent=true
+                       arguments=`echo ${arguments} | sed "s:${arg}::"`
                        ;;
                -site=* | --site=* | --sit=* | --si=*)
+                       site_option=${arg}
                        site=`echo ${arg} | sed 's/^[-a-z]*=//'`
                        ;;
-               -site | --site | --sit | --si)
+               -site | --site | --sit)
                        next_site=yes
                        ;;
+               # remove trailing slashes.  Otherwise, when the file name gets
+               # bolted into an object file as debug info, it has two slashes in
+               # it.  Ordinarily this is ok, but emacs takes double slash to
+               # mean "forget the first part".
                -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
-                       srcdir=`echo ${arg} | sed 's/^[-a-z]*=//'`
+                       srcdir=`echo ${arg} | sed 's/^[-a-z]*=//' | sed -e 's:/$::'`
                        ;;
                -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
                        next_srcdir=yes
                        ;;
-#              -subdirs | --su*)
-#                      subdirs=${arg}
-#                      ;;
                -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=*)
-#                      if [ -n "${targets}" ] ; then
-#                              subdirs="--subdirs"
-#                      fi
-
-                       if [ -z "${targets}" ] ; then
-                               newtargets="${targets} `echo ${arg} | sed 's/^[-a-z]*=//'`"
-                               targets="${newtargets}"
-                       else
-                               echo '***' Can only configure for one target at a time.
+                       case "${target_alias}" in
+                       "") target_alias="`echo ${arg} | sed 's/^[-a-z]*=//'`" ;;
+                       *)
+                               echo '***' Can only configure for one target at a time.  1>&2
                                fatal=yes
-                       fi
+                               ;;
+                       esac
                        ;;
                -target | --target | --targe | --targ | --tar | --ta)
                        next_target=yes
@@ -250,26 +233,25 @@ do
                        fatal=true
                        ;;
                *)
-#                      if [ -n "${hosts}" ] ; then
-#                              subdirs="--subdirs"
-#                      fi
-
-                       if [ -z "${undefs}" ] ; then
-                               newundefs="${undefs} ${arg}"
-                               undefs=${newundefs}
-                       else
-                               echo '***' Can only configure for one host and one target at a time.
+                       case "${undefs}" in
+                       "")
+                               undefs="${arg}"
+                               ;;
+                       *)
+                               echo '***' Can only configure for one host and one target at a time.  1>&2
                                fatal=yes
-                       fi
+                               ;;
+                       esac
                        ;;
                esac
        fi
 done
 
 # process host and target
-if [ -z "${fatal}" ] ; then
+case "${fatal}" in
+"")
 #      # Complain if an arg is missing
-#      if [ -z "${hosts}" ] ; then
+#      if [ -z "${host_alias}" ] ; then
 #              (echo ;
 #              echo "configure: No HOST specified." ;
 #              echo) 1>&2
@@ -284,50 +266,50 @@ if [ -z "${fatal}" ] ; then
 ### * if no targets are specified, then the unadorned args are targets, but if
 ### there were no unadorned args, then the hosts are also targets.
 
-       if [ -n "${hosts}" -a -n "${targets}" -a -n "${undefs}" ] ; then
-               echo '***' Can only configure for one host and one target at a time.
+       if [ -n "${host_alias}" -a -n "${target_alias}" -a -n "${undefs}" ] ; then
+               echo '***' Can only configure for one host and one target at a time.  1>&2
                fatal=yes
-       elif [ -z "${hosts}" -a -z "${undefs}" ] ; then
-               echo '***' You must tell me for which host you want to configure.
+       elif [ -z "${host_alias}" -a -z "${undefs}" ] ; then
+               echo '***' You must tell me for which host you want to configure.  1>&2
                fatal=yes
        else
-               if [ -z "${hosts}" ] ; then
-                       hosts=${undefs}
-               fi
+               case "${host_alias}" in
+               "") host_alias=${undefs} ;;
+               *) ;;
+               esac
 
-               if [ -z "${targets}" ] ; then
-                       if [ -n "${undefs}" ] ; then
-                               targets=${undefs}
-                       else
-                               targets=${hosts}
-                       fi
-               fi
+               case "${target_alias}" in
+               "")
+                       case "${undefs}" in
+                       "")     target_alias=${host_alias} ;;
+                       *)      target_alias=${undefs} ;;
+                       esac
+                       ;;
+               *) ;;
+               esac
        fi
-fi
+       ;;
+*) ;;
+esac
 
-if [ -n "${fatal}" -o "${hosts}" = "help" ] ; then
+if [ -n "${fatal}" -o "${host_alias}" = "help" ] ; then
        (echo "Usage: configure HOST" ;
        echo ;
        echo "Options: [defaults in brackets]" ;
-       echo " -datadir=MYDIR   configure for installation of host dependent files into MYDIR. [\"/usr/local\"]" ;
-       echo " -gas             configure the compilers for use with gas. [native as]" ;
-       echo " -help            print this message. [normal config]" ;
-       echo " -lang=LANG       configure to build LANG. [gcc]" ;
-       echo " -nfp             configure the compilers default to soft floating point. [hard float]" ;
-       echo " -norecursion     configure this directory only. [recurse]" ;
-#      echo " -objdir=ODIR     configure in a parallel tree rooted in ODIR. [rooted in \".\"]" ;
-       echo " -prefix=MYDIR    configure for installation of host dependent files into MYDIR. [\"/usr/local\"]" ;
-       echo " -rm              remove this configuration. [build a configuration]" ;
-       echo " -site            configure with site specific makefile" ;
-       echo " -srcdir=DIR      find the sources in DIR. [\".\" or \"..\"]" ;
-# This is correctly aligned in the output, even though it isn't here.
-#      echo " -subdirs configure in subdirectories.  [in source directories]" ;
-       echo " -target=TARGET   configure for TARGET.  [TARGET = HOST]" ;
-       echo " -tmpdir=TMPDIR   create temporary files in TMPDIR.  [ TMPDIR = \"/tmp\" ]" ;
+       echo " -exec_prefix=MYDIR       configure for installation of host dependent files into MYDIR. [\"/usr/local\"]" ;
+       echo " -gas                     configure the compilers for use with gas. [native as]" ;
+       echo " -help                    print this message. [normal config]" ;
+       echo " -lang=LANG               configure to build LANG. [gcc]" ;
+       echo " -nfp                     configure the compilers default to soft floating point. [hard float]" ;
+       echo " -norecursion             configure this directory only. [recurse]" ;
+       echo " -prefix=MYDIR            configure for installation of host dependent files into MYDIR. [\"/usr/local\"]" ;
+       echo " -program_prefix=FOO      install programs with FOO prepended to their names. [ \"\" ]" ;
+       echo " -site=SITE               configure with site specific makefile for SITE" ;
+       echo " -srcdir=DIR              find the sources in DIR. [\".\" or \"..\"]" ;
+       echo " -target=TARGET           configure for TARGET.  [TARGET = HOST]" ;
+       echo " -tmpdir=TMPDIR           create temporary files in TMPDIR.  [ TMPDIR = \"/tmp\" ]" ;
        echo ;
        echo "Where HOST and TARGET are something like \"vax\", \"sun3\", \"encore\", etc." ;
-#      echo "Asking for more than one \"--target\" implies \"--subdirs\".  Any other" ;
-#      echo "options given will apply to all targets."
        ) 1>&2
 
        if [ -r config.status ] ; then
@@ -339,37 +321,67 @@ fi
 
 configsub=`echo ${progname} | sed 's/configure$/config.sub/'`
 
-if ${configsub} `echo ${hosts} | sed -e 's/ .*//'` >/dev/null 2>&1 ; then
+if ${configsub} `echo ${host_alias} | sed -e 's/ .*//'` >/dev/null 2>&1 ; then
        true
 else
-       echo '***' cannot find config.sub.
+       echo '***' cannot find config.sub.  1>&2
        exit 1
 fi
 
-if [ -z "${srcdir}" ] ; then
+case "${srcdir}" in
+"")
        if [ -r configure.in ] ; then
                srcdir=.
        else
-               echo '***' "Can't find configure.in.  Try using -srcdir=some_dir"
+               if [ -r ${progname}.in ] ; then
+                       srcdir=`echo ${progname} | sed 's:/configure$::'`
+               else
+                       echo '***' "Can't find configure.in.  Try using -srcdir=some_dir"  1>&2
+                       exit 1
+               fi
+       fi
+       ;;
+*) ;;
+esac
+
+### warn about some conflicting configurations.
+
+case "${srcdir}" in
+".") ;;
+*)
+       if [ -f ${srcdir}/config.status ] ; then
+               echo '***' Cannot configure here in \"${PWD}\" when \"${srcdir}\" is currently configured. 1>&2
                exit 1
        fi
-fi
+esac
 
+# default exec_prefix
+case "${exec_prefix}" in
+"") exec_prefix="$(prefix)" ;;
+*) ;;
+esac
 
 ### break up ${srcdir}/configure.in.
-if [ -z "`grep '^# per\-host:' ${srcdir}/configure.in`" ] ; then
+case "`grep '^# per\-host:' ${srcdir}/configure.in`" in
+"")
        echo '***' ${srcdir}/configure.in has no "per-host:" line. 1>&2
        exit 1
-fi
+       ;;
+*) ;;
+esac
 
-if [ -z "`grep '^# per\-target:' ${srcdir}/configure.in`" ] ; then
+case "`grep '^# per\-target:' ${srcdir}/configure.in`" in
+"")
        echo '***' ${srcdir}/configure.in has no "per-target:" line. 1>&2
        exit 1
-fi
+       ;;
+*) ;;
+esac
 
-if [ -z "${TMPDIR}" ] ; then
-       TMPDIR=/tmp ; export TMPDIR
-fi
+case "${TMPDIR}" in
+"") TMPDIR=/tmp ; export TMPDIR ;;
+*) ;;
+esac
 
 # keep this filename short for &%*%$*# 14 char file names
 tmpfile=${TMPDIR}/cONf$$
@@ -392,401 +404,311 @@ fi
 . ${tmpfile}.com
 
 # some sanity checks on configure.in
-if [ -z "${srctrigger}" ] ; then
-       echo '***' srctrigger not set in ${PWD}/configure.in.
+case "${srctrigger}" in
+"")
+       echo '***' srctrigger not set in ${PWD}/configure.in.  1>&2
        exit 1
-fi
-
-for host in ${hosts} ; do
-       # Default other arg
-       if [ -z "${targets}" -o -n "${defaulttargets}" ] ; then
-               targets=${host}
-               defaulttargets=true
-       fi
-
-       host_alias=${host}
-
-       result=`${configsub} ${host}`
-       host_cpu=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\1/'`
-       host_vendor=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\2/'`
-       host_os=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\3/'`
-       host=${host_cpu}-${host_vendor}-${host_os}
-       host_makefile_frag=config/mh-${host}
-       if [ ! -f ${host_makefile_frag} ]
-       then
-               host_makefile_frag=config/mh-${host_alias}
+       ;;
+*) ;;
+esac
+
+result=`${configsub} ${host_alias}`
+host_cpu=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\1/'`
+host_vendor=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\2/'`
+host_os=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\3/'`
+host=${host_cpu}-${host_vendor}-${host_os}
+
+. ${tmpfile}.hst
+
+result=`${configsub} ${target_alias}`
+target_cpu=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\1/'`
+target_vendor=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\2/'`
+target_os=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\3/'`
+target=${target_cpu}-${target_vendor}-${target_os}
+
+. ${tmpfile}.tgt
+
+# Find the source files, if location was not specified.
+case "${srcdir}" in
+"")
+       srcdirdefaulted=1
+       srcdir=.
+       if [ ! -r ${srctrigger} ] ; then
+               srcdir=..
        fi
+       ;;
+*) ;;
+esac
 
-       . ${tmpfile}.hst
-
-       for target in ${targets} ; do
-
-               target_alias=${target}
-               result=`${configsub} ${target}`
-               target_cpu=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\1/'`
-               target_vendor=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\2/'`
-               target_os=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\3/'`
-               target=${target_cpu}-${target_vendor}-${target_os}
-               target_makefile_frag=config/mt-${target}
-               if [ ! -f ${target_makefile_frag} ]
-               then
-                       target_makefile_frag=config/mt-${target_alias}
-               fi
-
-               . ${tmpfile}.tgt
+if [ ! -r ${srcdir}/${srctrigger} ] ; then
+       case "${srcdirdefaulted}" in
+       "") echo '***' "${progname}: Can't find ${srcname} sources in ${PWD}/${srcdir}" 1>&2 ;;
+       *)  echo '***' "${progname}: Can't find ${srcname} sources in ${PWD}/. or ${PWD}/.." 1>&2 ;;
+       esac
 
-               if [ "${host_alias}" = "${target_alias}" ] ; then
-                       subdirname=H-${host_alias}
-               else
-                       subdirname=X-${host_alias}-${target_alias}
-               fi
-
-               if [ -n "${namesubdir}" ] ; then
-                       subdirname=${namesubdir}
-               fi
-
-               if [ -n "${removing}" ] ; then
-#                      if [ -n "${objdir}" ] ; then
-#                              echo '***' --rm not supported for --objdir.  Just \"rm -rf ${objdir}\" by hand.
-#                              exit 1
-#                      fi
-
-#                      if [ -n "${subdirs}" ] ; then
-#                              if [ -d "${subdirname}" ] ; then
-#                                      rm -rf ${hostsubdir}
-#                              else
-#                                      echo Warning: no ${PWD}/${hostsubdir} to remove.
-#                              fi
-#                      else
-                               rm -f ${Makefile} config.status ${links}
-#                      fi
-               else
-#                      if [ -n "${objdir}" ]; then
-#                              srcdir=${PWD}
-#                              cd ${objdir}
-#                      fi
-
-#                      if [ -n "${subdirs}" ] ; then
-#                              # check for existing status before allowing forced subdirs.
-#                              if [ -f ${Makefile} ] ; then
-#                                      echo '***' "${Makefile} already exists in source directory.  ${PWD} not configured." 1>&2
-#                                      exit 1
-#                              fi
-#
-#                              # use a subdir common to all targets for this host iff: this is a cross AND
-#                              # this tool does not claim to be target dependent AND we have not been asked to name the subdir.
-#                              if [ ${host_alias} != ${target_alias} -a -z "${target_dependent}" -a -z "${namesubdiroption}" ]
-#                              then
-#                                      if [ ! -d H-${host_alias} ] ; then mkdir H-${host_alias} ; fi
-#
-#                                      if ${symbolic_link} ${subdirname} H-${host_alias} 2> /dev/null ; then
-#                                              true
-#                                      else # just give up. they lose.
-#                                              rmdir H-${host_alias}
-#                                              if [ ! -d ${subdirname} ] ; then mkdir ${subdirname} ; fi
-#                                      fi
-#                              elif [ ! -d ${subdirname} ] ; then
-#                                      mkdir ${subdirname}
-#                              fi
-#
-#                              cd ${subdirname}
-#
-#                              if [ -z "${srcdir}" ] ; then
-#                                      srcdir=..
-#                              fi
-#                      elif [ "`echo H-*`" != "H-*" -a "`echo X-*`" != "X-*" ] ; then
-#                              # if not subdir builds, then make sure none exist.
-#                              # We might miss if there are explicitly named subdirs.
-#                              echo '***' "Configured subdirs exist.  ${PWD} not configured." 1>&2
-#                              exit 1
-#                      else
-#                              true
-#                      fi
-
-                       # Find the source files, if location was not specified.
-                       if [ -z "${srcdir}" ] ; then
-                               srcdirdefaulted=1
-                               srcdir=.
-                               if [ ! -r ${srctrigger} ] ; then
-                                       srcdir=..
-                               fi
-                       fi
-
-                       if [ ! -r ${srcdir}/${srctrigger} ] ; then
-                               if [ -z "${srcdirdefaulted}" ] ; then
-                                       echo '***' "${progname}: Can't find ${srcname} sources in ${PWD}/${srcdir}" 1>&2
-                               else
-                                       echo '***' "${progname}: Can't find ${srcname} sources in ${PWD}/. or ${PWD}/.." 1>&2
-                               fi
-
-                               echo '***' \(At least ${srctrigger} is missing.\) 1>&2
-                               exit 1
-                       fi
-
-                       # Set up the list of links to be made.
-                       # ${links} is the list of link names, and ${files} is the list of names to link to.
-
-                       # Make the links.
-                       while [ -n "${files}" ] ; do
-                               # set file to car of files, files to cdr of files
-                               set ${files}; file=$1; shift; files=$*
-                               set ${links}; link=$1; shift; links=$*
-
-                               if [ ! -r ${srcdir}/${file} ] ; then
-                                       echo '***' "${progname}: cannot create a link \"${link}\"," 1>&2
-                                       echo '***' "since the file \"${file}\" does not exist." 1>&2
-                                       exit 1
-                               fi
-
-                               ${remove} -f ${link}
-                               rm -f config.status
-                               # Make a symlink if possible, otherwise try a hard link
-                               ${symbolic_link} ${srcdir}/${file} ${link} 2>/dev/null || ${hard_link} ${srcdir}/${file} ${link}
-
-                               if [ ! -r ${link} ] ; then
-                                       echo '***' "${progname}: unable to link \"${link}\" to \"${srcdir}/${file}\"." 1>&2
-                                       exit 1
-                               fi
-
-                               if [ -n "${verbose}" ] ; then
-                                       echo "Linked \"${link}\" to \"${srcdir}/${file}\"."
-                               fi
-                       done
-
-                       # Create a .gdbinit file which runs the one in srcdir
-                       # and tells GDB to look there for source files.
-
-                       if [ -r ${srcdir}/.gdbinit ] ; then
-                               case ${srcdir} in
-                               .)
-                                       ;;
-                               *)
-                                       echo "# "${NO_EDIT} > .gdbinit
-                                       echo "dir ." >> .gdbinit
-                                       echo "dir ${srcdir}" >> .gdbinit
-                                       echo "source ${srcdir}/.gdbinit" >> .gdbinit
-                                       ;;
-                               esac
-                       fi
-
-                       # Install a makefile, and make it set VPATH
-                       # if necessary so that the sources are found.
-                       # Also change its value of srcdir.
+       echo '***' \(At least ${srctrigger} is missing.\) 1>&2
+       exit 1
+fi
 
-               # FIXME-someday: This business of always writing to .tem and mv back
-               # is so that I don't screw things up while developing.  Once this
-               # template is stable, these should be optimized. xoxorich.
+# Set up the list of links to be made.
+# ${links} is the list of link names, and ${files} is the list of names to link to.
 
-                       # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
-                       if [ "${host}" != "${target}" ] ; then
-                               echo "CROSS=-DCROSS_COMPILE" > ${Makefile}
-                               echo "ALL=all.cross" >> ${Makefile}
-                       else
-                               echo "ALL=all.internal" > ${Makefile}
-                       fi
+# Make the links.
+configlinks="${links}"
+while [ -n "${files}" ] ; do
+       # set file to car of files, files to cdr of files
+       set ${files}; file=$1; shift; files=$*
+       set ${links}; link=$1; shift; links=$*
 
-                       # set target, host, VPATH
-                       echo "host_alias = ${host_alias}" >> ${Makefile}
-                       echo "host_cpu = ${host_cpu}" >> ${Makefile}
-                       echo "host_vendor = ${host_vendor}" >> ${Makefile}
-                       echo "host_os = ${host_os}" >> ${Makefile}
-
-                       echo "target_alias = ${target_alias}" >> ${Makefile}
-                       echo "target_cpu = ${target_cpu}" >> ${Makefile}
-                       echo "target_vendor = ${target_vendor}" >> ${Makefile}
-                       echo "target_os = ${target_os}" >> ${Makefile}
-
-#                      if [ -n "${subdirs}" ] ; then
-#                              echo "subdir = /${subdirname}" >> ${Makefile}
-#                              echo "unsubdir = .." >> ${Makefile}
-#                      else
-                               echo "subdir =" >> ${Makefile}
-                               echo "unsubdir = ." >> ${Makefile}
-#                      fi
-
-               #       echo "workdir = ${PWD}" >> ${Makefile}
-                       echo "VPATH = ${srcdir}" >> ${Makefile}
-
-                       # add "Makefile.in" (or whatever it's called)
-                       cat ${srcdir}/${Makefile_in} >> ${Makefile}
-
-                       # Conditionalize the makefile for this site.
-                       if [ -n "${site}" ] ; then
-                               site_makefile_frag=config/ms-${site}
-
-                               if [ -f ${srcdir}/${site_makefile_frag} ] ; then
-                                       echo "site_makefile_frag = ${srcdir}/${site_makefile_frag}" > Makefile.tem
-                                       sed -e "/^####/  r ${srcdir}/${site_makefile_frag}" ${Makefile} >> Makefile.tem
-                               else
-                                       echo "site_makefile_frag =" > Makefile.tem
-                                       cat ${Makefile} >> Makefile.tem
-                               fi
-                               mv Makefile.tem ${Makefile}
-                       fi
-
-                       # Conditionalize the makefile for this host.
-                       if [ -f ${srcdir}/${host_makefile_frag} ] ; then
-                               echo "host_makefile_frag = ${srcdir}/${host_makefile_frag}" > Makefile.tem
-                               sed -e "/^####/  r ${srcdir}/${host_makefile_frag}" ${Makefile} >> Makefile.tem
-                       else
-                               echo "host_makefile_frag =" > Makefile.tem
-                               cat ${Makefile} >> Makefile.tem
-                       fi
-                       mv Makefile.tem ${Makefile}
+       if [ ! -r ${srcdir}/${file} ] ; then
+               echo '***' "${progname}: cannot create a link \"${link}\"," 1>&2
+               echo '***' "since the file \"${file}\" does not exist." 1>&2
+               exit 1
+       fi
 
-                       # Conditionalize the makefile for this target.
-                       if [ -f ${srcdir}/${target_makefile_frag} ] ; then
-                               echo "target_makefile_frag = ${srcdir}/${target_makefile_frag}" > Makefile.tem
-                               sed -e "/^####/  r ${srcdir}/${target_makefile_frag}" ${Makefile} >> Makefile.tem
-                       else
-                               echo "target_makefile_frag =" > Makefile.tem
-                               cat ${Makefile} >> Makefile.tem
-                       fi
-                       mv Makefile.tem ${Makefile}
+       ${remove} -f ${link}
+       rm -f config.status
+       # Make a symlink if possible, otherwise try a hard link
+       ${symbolic_link} ${srcdir}/${file} ${link} 2>/dev/null || ${hard_link} ${srcdir}/${file} ${link}
 
-                       # set srcdir
-                       sed "s:^srcdir[         ]*=.*$:srcdir = ${srcdir}:" ${Makefile} > Makefile.tem
-                       mv Makefile.tem ${Makefile}
+       if [ ! -r ${link} ] ; then
+               echo '***' "${progname}: unable to link \"${link}\" to \"${srcdir}/${file}\"." 1>&2
+               exit 1
+       fi
 
-                       # set prefix
-                       if [ -n "${prefix}" ] ; then
-                               sed "s:^prefix[         ]*=.*$:prefix = ${prefix}:" ${Makefile} > Makefile.tem
-                               mv Makefile.tem ${Makefile}
-                       fi
+       case "${verbose}" in
+       "") ;;
+       *)  echo "Linked \"${link}\" to \"${srcdir}/${file}\"." ;;
+       esac
+done
 
-                       # set datadir
-                       if [ -n "${datadir}" ] ; then
-                               sed "s:^datadir[        ]*=.*$:datadir = ${datadir}:" ${Makefile} > Makefile.tem
-                               mv Makefile.tem ${Makefile}
-                       fi
+# Create a .gdbinit file which runs the one in srcdir
+# and tells GDB to look there for source files.
+
+if [ -r ${srcdir}/.gdbinit ] ; then
+       case ${srcdir} in
+       .)
+               ;;
+       *) cat > .gdbinit <<EOF
+# ${NO_EDIT} > .gdbinit
+dir .
+dir ${srcdir}
+source ${srcdir}/.gdbinit
+EOF
+               ;;
+       esac
+fi
 
-                       # reset SUBDIRS
-                       sed "s:^SUBDIRS[        ]*=.*$:SUBDIRS = ${configdirs}:" ${Makefile} > Makefile.tem
-                       mv Makefile.tem ${Makefile}
+# Install a makefile, and make it set VPATH
+# if necessary so that the sources are found.
+# Also change its value of srcdir.
+# NOTE: Makefile generation constitutes the majority of the time in configure.  Hence, this section has
+# been somewhat optimized and is perhaps a bit twisty.
 
-                       # reset NONSUBDIRS
-                       sed "s:^NONSUBDIRS[     ]*=.*$:NONSUBDIRS = ${noconfigdirs}:" ${Makefile} > Makefile.tem
-                       mv Makefile.tem ${Makefile}
+# code is order so as to try to sed the smallest input files we know.
 
-                       # remove any form feeds.
-                       sed -e "s/\f//" ${Makefile} > Makefile.tem
-                       mv Makefile.tem ${Makefile}
+# the three makefile fragments MUST end up in the resulting Makefile in this order: target, host, and site.
+# so do these separately because I don't trust the order of sed -e expressions.
 
-                       # prepend warning about editting.
-                       echo "# "${NO_EDIT} > ${Makefile}.tem
-                       cat ${Makefile} >> ${Makefile}.tem
-                       mv Makefile.tem ${Makefile}
+# Conditionalize for this site from "Makefile.in" (or whatever it's called) into Makefile.tem
+case "${site}" in
+"") cp ${srcdir}/${Makefile_in} Makefile.tem ;;
+*)
+       site_makefile_frag=${srcdir}/config/ms-${site}
 
-                       using=
-                       if [ -f ${srcdir}/${host_makefile_frag} ] ; then
-                               using="${using} and \"${host_makefile_frag}\""
-                       fi
-                       if [ -f ${srcdir}/${target_makefile_frag} ] ; then
-                               using="${using} and \"${target_makefile_frag}\""
-                       fi
-                       if [ -n "${site}" -a \
-                            -f ${srcdir}/${site_makefile_frag} ] ; then
-                               using="${using} and \"${site_makefile_frag}\""
-                       fi
-                       using=`echo "${using}" | sed 's/and/using/'`
-                       using="Created \"${Makefile}\" in ${PWD}${using}."
+       if [ -f ${site_makefile_frag} ] ; then
+               sed -e "/^####/  r ${site_makefile_frag}" ${srcdir}/${Makefile_in} \
+                       > Makefile.tem
+       else
+               cp ${srcdir}/${Makefile_in} Makefile.tem
+               site_makefile_frag=
+       fi
+       ;;
+esac
+# working copy now in Makefile.tem
+
+# Conditionalize the makefile for this host.
+case "${host_makefile_frag}" in
+"") mv Makefile.tem ${Makefile} ;;
+*)
+       host_makefile_frag=${srcdir}/${host_makefile_frag}
+       if [ -f ${host_makefile_frag} ] ; then
+               sed -e "/^####/  r ${host_makefile_frag}" Makefile.tem > ${Makefile}
+       else
+               echo '***' Expected host makefile fragment \"${host_makefile_frag}\" 1>&2
+               echo '***' is missing in ${PWD}. 1>&2
+               mv Makefile.tem ${Makefile}
+       fi
+esac
+# working copy now in ${Makefile}
+
+# Conditionalize the makefile for this target.
+case "${target_makefile_frag}" in
+"") mv ${Makefile} Makefile.tem ;;
+*)
+       target_makefile_frag=${srcdir}/${target_makefile_frag}
+       if [ -f ${target_makefile_frag} ] ; then
+               sed -e "/^####/  r ${target_makefile_frag}" ${Makefile} > Makefile.tem
+       else
+               mv ${Makefile} Makefile.tem
+               target_makefile_frag=
+       fi
+       ;;
+esac
+# real copy now in Makefile.tem
 
-                       if [ -n "${verbose}" -o -z "${recurring}" ] ; then
-                               echo ${using}
-                       fi
+# prepend warning about editting, and a bunch of variables.
+cat > ${Makefile} <<EOF
+# ${NO_EDIT}
+host_alias = ${host_alias}
+host_cpu = ${host_cpu}
+host_vendor = ${host_vendor}
+host_os = ${host_os}
+target_alias = ${target_alias}
+target_cpu = ${target_cpu}
+target_vendor = ${target_vendor}
+target_os = ${target_os}
+target_makefile_frag = ${target_makefile_frag}
+host_makefile_frag = ${host_makefile_frag}
+site_makefile_frag = ${site_makefile_frag}
+links = ${configlinks}
+VPATH = ${srcdir}
+EOF
+
+# fixme: this shouldn't be in configure.
+# Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
+case "${host_alias}" in
+"${target_alias}")
+       tooldir="$(libdir)"
+       echo "ALL=all.internal" >> ${Makefile}
+       ;;
+*)
+       echo "CROSS=-DCROSS_COMPILE" >> ${Makefile}
+       echo "ALL=all.cross" >> ${Makefile}
+       case "${program_prefix}" in
+       "")     program_prefix=${target_alias}- ;;
+       *)      ;;
+       esac
+
+       tooldir="$(libdir)/${target_alias}"
+       ;;
+esac
+
+# reset prefix, exec_prefix, srcdir, SUBDIRS, NONSUBDIRS, remove any form
+# feeds.
+sed -e "s:^prefix[     ]*=.*$:prefix = ${prefix}:" \
+       -e "s:^exec_prefix[     ]*=.*$:exec_prefix = ${exec_prefix}:" \
+       -e "s:^srcdir[  ]*=.*$:srcdir = ${srcdir}:" \
+       -e "s:^SUBDIRS[         ]*=.*$:SUBDIRS = ${configdirs}:" \
+       -e "s:^NONSUBDIRS[      ]*=.*$:NONSUBDIRS = ${noconfigdirs}:" \
+       -e "s/\f//" \
+       -e "s:^program_prefix[  ]*=.*$:program_prefix = ${program_prefix}:" \
+       -e "s:^tooldir[         ]*=.*$:tooldir = ${tooldir}:" \
+       Makefile.tem >> ${Makefile}
+# final copy now in ${Makefile}
+
+rm Makefile.tem
+
+if [ -n "${verbose}" -o -z "${silent}" ] ; then
+       case "${host_makefile_frag}" in
+       "") using= ;;
+       *) using="and \"${host_makefile_frag}\"" ;;
+       esac
+
+       case "${target_makefile_frag}" in
+       "") ;;
+       *) using="${using} and \"${target_makefile_frag}\"" ;;
+       esac
+
+       case "${site_makefile_frag}" in
+       "") ;;
+       *) using="${using} and \"${site_makefile_frag}\"" ;;
+       esac
+
+       echo "Created \"${Makefile}\" in" ${PWD} `echo "${using}" | sed 's/and/using/'`
+fi
 
-                       . ${tmpfile}.pos
+. ${tmpfile}.pos
 
-                       # describe the chosen configuration in config.status.
-                       # Make that file a shellscript which will reestablish
-                       # the same configuration.  Used in Makefiles to rebuild
-                       # Makefiles.
+# describe the chosen configuration in config.status.
+# Make that file a shellscript which will reestablish
+# the same configuration.  Used in Makefiles to rebuild
+# Makefiles.
 
-                       if [ -z "${norecursion}" ] ; then
-                               arguments="${arguments} -norecursion"
-                       fi
+case "${norecursion}" in
+"") arguments="${arguments} -norecursion" ;;
+*) ;;
+esac
 
-                       echo "#!/bin/sh
+echo "#!/bin/sh
 # ${NO_EDIT}
 # ${PWD} was configured as follows:
 ${progname}" ${arguments}  "
 # ${using}" > config.status
-                       chmod a+x config.status
-
-#                      originaldir=${PWD}
-#                      cd ${srcdir}
-               fi
+chmod a+x config.status
+
+# If there are subdirectories, then recur. 
+if [ -z "${norecursion}" -a -n "${configdirs}" ] ; then 
+       for configdir in ${configdirs} ; do
+               case "${verbose}" in
+               "") ;;
+               *) echo Configuring ${configdir}... ;;
+               esac
 
-               # If there are subdirectories, then recur. 
-               if [ -z "${norecursion}" -a -n "${configdirs}" ] ; then 
-                       for configdir in ${configdirs} ; do
-                               if [ -n "${verbose}" ] ; then
-                                       echo Configuring ${configdir}...
+               if [ -d ${srcdir}/${configdir} ] ; then
+                       case "${srcdir}" in
+                       ".") ;;
+                       *)
+                               if [ ! -d ./${configdir} ] ; then
+                                       mkdir ./${configdir}
                                fi
+                               ;;
+                       esac
 
-                               if [ -d ${srcdir}/${configdir} ] ; then
-                                       if [ "${srcdir}" != "." ] ; then
-                                               if [ ! -d ./${configdir} ] ; then
-                                                       mkdir ./${configdir}
-                                               fi
-                                       fi
-
-                                       POPDIR=${PWD}
-                                       cd ${configdir} 
+                       POPDIR=${PWD}
+                       cd ${configdir} 
 
 ### figure out what to do with srcdir
-                                       case "${srcdir}" in
-                                       ".") ;; # do nothing.  We're building in place.
-                                       /*) srcdiroption="-srcdir=${srcdir}/${configdir}" ;; # absolute path
-                                       *) srcdiroption="-srcdir=../${srcdir}/${configdir}" ;; # otherwise relative
-                                       esac
+                       case "${srcdir}" in
+                       ".") newsrcdir=${srcdir} ;; # no -srcdir option.  We're building in place.
+                       /*) # absolute path
+                               newsrcdir=${srcdir}/${configdir}
+                               srcdiroption="-srcdir=${newsrcdir}"
+                               ;;
+                       *) # otherwise relative
+                               newsrcdir=../${srcdir}/${configdir}
+                               srcdiroption="-srcdir=${newsrcdir}"
+                               ;;
+                       esac
+
+### check for guested configure, otherwise fix possibly relative progname
+                       if [ -f ${newsrcdir}/configure ] ; then
+                               recprog=${newsrcdir}/configure
+                       else
+                               case "${progname}" in
+                               /*)     recprog=${progname} ;;
+                               *)      recprog=../${progname} ;;
+                               esac
+                       fi
 
 ### The recursion line is here.
-                                       if [ -f configure ] ; then
-                                               recprog=`pwd`/configure
-                                       else
-                                               recprog=${progname}
-                                       fi
-
-                                       if ${recprog} -recurring ${host_alias} -target=${target_alias} \
-                                               ${verbose} ${subdirs} ${removing} ${prefixoption} \
-                                               ${tmpdiroption} ${namesubdiroption} ${datadiroption} \
-                                               ${srcdiroption} ; then
-                                               true
-                                       else
-                                               exit 1
-                                       fi
-
-                                       cd ${POPDIR}
-                               elif [ -n "${verbose}" ] ; then
-                                       echo Warning: source directory \"${srcdir}/${configdir}\" is missing.
-                               fi
-                       done
-               fi
-       done # for each target
+                       if ${recprog} -s ${host_alias} -target=${target_alias} \
+                               ${verbose} ${prefixoption} ${tmpdiroption} ${exec_prefixoption} \
+                               ${srcdiroption} ${program_prefixoption} ${site_option} ; then
+                               true
+                       else
+                               exit 1
+                       fi
 
-       # Now build a Makefile for this host.
-#      if [ -n "${subdirs}" -a ! -n "${removing}" ] ; then
-#              push=${PWD}
-#
-#              if [ -n "${objdir}" ] ; then
-#                      cd ${objdir}
-#              fi
-#
-#              cd ${hostsubdir}
-#              cat > GNUmakefile << 'E!O!F'
-## Makefile generated by configure for host ${host_alias}.
-#
-#ALL := $(shell ls -d T-*)
-#
-#%:
-#      $(foreach subdir,$(ALL),$(MAKE) -C $(subdir) \$@ &&) true
-#
-#all:
-#E!O!F
-#              cd ${push}
-#      fi
-done # for each host
+                       cd ${POPDIR}
+               else
+                       case "${verbose}" in
+                       "") ;;
+                       *) echo Warning: source directory \"${srcdir}/${configdir}\" is missing. ;;
+                       esac
+               fi
+       done
+fi
 
 ### clean up.
 
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