configure

#! /bin/sh
#
# A (not so) simple configure script.
#
# Authors: Christian Holm Christensen and Fons Rademakers
#
# To help with debugging the script, some comments are preprended with
# 3 '#' echo and 3 '%' - replace that pattern with echo and 3 '%' to
# get printouts.  When done replace the pattern echo and 3 '%' with the
# original pattern of 3 '#' echo and 3 '%'.  Emacs command M-C-% does
# this easily.
#
######################################################################
#
### echo %%% Some global variables
#
found_lib=no
found_dir=no
found_hdr=no
show_pkglist=no
fail_on_missing=no
noact="no"
nohowto="no"
logfile=config.log
altcc=
altcxx=
altf77=
altld=

deprecated_options="         \
   enable_mathcore           \
   enable_cern               \
"

options="                    \
   enable_afs                \
   enable_alien              \
   enable_asimage            \
   enable_astiff             \
   enable_bonjour            \
   enable_builtin_afterimage \
   enable_builtin_ftgl       \
   enable_builtin_freetype   \
   enable_builtin_glew       \
   enable_builtin_pcre       \
   enable_builtin_zlib       \
   enable_castor             \
   enable_chirp              \
   enable_cint5              \
   enable_cint7              \
   enable_cintex             \
   enable_clarens            \
   enable_editline           \
   enable_dcache             \
   enable_exceptions         \
   enable_explicitlink       \
   enable_fftw3              \
   enable_gviz               \
   enable_g4root             \
   enable_gdml               \
   enable_genvector          \
   enable_gfal               \
   enable_glite              \
   enable_globus             \
   enable_gsl_shared         \
   enable_hdfs               \
   enable_krb5               \
   enable_ldap               \
   enable_mathmore           \
   enable_memstat            \
   enable_minuit2            \
   enable_monalisa           \
   enable_mysql              \
   enable_odbc               \
   enable_opengl             \
   enable_oracle             \
   enable_pch                \
   enable_peac               \
   enable_pgsql              \
   enable_pythia6            \
   enable_pythia8            \
   enable_python             \
   enable_qt                 \
   enable_qtgsi              \
   enable_reflex             \
   enable_roofit             \
   enable_ruby               \
   enable_rfio               \
   enable_rpath              \
   enable_sapdb              \
   enable_shadowpw           \
   enable_shared             \
   enable_soversion          \
   enable_srp                \
   enable_ssl                \
   enable_table              \
   enable_tmva               \
   enable_unuran             \
   enable_winrtdebug         \
   enable_xft                \
   enable_xml                \
   enable_xrootd             \
"

#
# This sets all options to "yes" - we turn off those we don't want
# on per default explictly afterwards.
#
for c in $options ; do eval ${c}="yes" ; done
for c in $deprecated_options ; do eval ${c}="yes" ; done
for c in $options ; do eval ${c}_explicit="" ; done

enable_afs=no
enable_cint7=no
enable_gdml=no
enable_globus=no
enable_explicitlink=no
enable_gsl_shared=no
enable_krb5=no
enable_pch=no
enable_qt=no
enable_qtgsi=no
enable_roofit=no
enable_minuit2=no
enable_rpath=no
enable_ruby=no
enable_shadowpw=
enable_soversion=no
enable_table=no
enable_thread=yes        # cannot be disabled (not in above options list)
no_stubs=no              # complete Dictionaries by default (All stubs)
no_stubs_test=no         # complete Dictionaries by default (All stubs)
enable_unuran=no
enable_winrtdebug=
enable_xrootd=           # must be set explicitely via --enable-xrootd
enable_builtin_glew=no

# Remove old log file
rm -f $logfile

#
# ./configure arguments and defaults set via supported env vars
#
envvars="
THREAD           \
OPENGL           \
MYSQL            \
ORACLE           \
PGSQL            \
QTDIR            \
SAPDB            \
RFIO             \
CASTOR           \
GFAL             \
G4ROOT           \
GSL              \
HDFS             \
PYTHIA6          \
PYTHIA8          \
FFTW3            \
GVIZ             \
PYTHONDIR        \
DCACHE           \
CHIRP            \
DNSSD            \
ALIEN            \
ASIMAGE          \
LDAP             \
GLOBUS_LOCATION  \
GLITE            \
MEMSTAT          \
MONALISA         \
SRP              \
SSL              \
AFS              \
ROOFIT           \
MINUIT2          \
TABLE            \
XMLDIR           \
ROOTDICTTYPE     \
"
configenvvars=
for c in $envvars ; do
   cc=`eval echo "$"$c | sed 's,\\\,\\\\\\\,g'`
   if test ! "x$cc" = "x" ; then
      if test ! "x$configenvvars" = "x" ; then
         configenvvars="$configenvvars $c=$cc"
      else
         configenvvars="$c=$cc"
      fi
   fi
done

configargs="$*"
# don't write --nohowto to config.h
configargs=`echo $configargs | sed 's, *--nohowto,,g'`

configoptions=
if test ! "x$configenvvars" = "x" ; then
   configoptions=$configenvvars
fi
if test ! "x$configargs" = "x" ; then
   if test ! "x$configoptions" = "x" ; then
      configoptions="$configoptions $configargs"
   else
      configoptions=$configargs
   fi
fi
configoptions=`echo $configoptions | sed 's,\\\,\\\\\\\,g'`

######################################################################
#
### echo %%% Some common functions
#
#_____________________________________________________________________
message() {
    # Write a simple message to std out
    if test $# -lt 1 ; then
        echo "message: Too few arguments"
        return 1
    fi
    echo $ac_n "$* ... $ac_c"
    logmsg "$*"
}

#_____________________________________________________________________
logmsg() {
    # Write a simple message to std out
    if test $# -lt 1 ; then
        echo "logmsg: Too few arguments"
        return 1
    fi
    if test "x$1" = "x-n"; then
       shift
       echo -n "$*" >> $logfile
    else
       echo "$*" >> $logfile
    fi
}

#_____________________________________________________________________
result() {
    echo "$*"
    logmsg "Result: $*"
}

#_____________________________________________________________________
checking_msg() {
    # Write a simple "checking" message to std out.
    if test $# -lt 1 ; then
        echo "checking_msg: Too few arguments"
        return 1
    fi
    echo $ac_n "Checking for$ac_c"
    logmsg $ac_n "Checking for$ac_c"
    while test $# -gt 1 ; do
        echo $ac_n " $1,$ac_c"
        logmsg $ac_n " $1,$ac_c"
        shift
        if test $# -eq 1 ; then
            echo $ac_n " or$ac_c"
            logmsg $ac_n " or$ac_c"
        fi
    done
    echo $ac_n " $1 ... $ac_c"
    logmsg " $1 ... "
}

#_____________________________________________________________________
check_lib64() {
    # This function will try to find out if a library [$1] contains 64 bit
    # or 32 bit code. Currently works only for linux.
    # The result of the check is stored in is_lib64, 1 if true,
    # 0 otherwise, which should be immediately copied, since the variable
    # will be overwritten at next invocation of this function.

    is_lib64=0

    # Assert that we got enough arguments
    if test $# -ne 1 ; then
        echo "check_lib64: not 1 argument"
        return 1
    fi

    # Save arguments in logical names
    chklib64=$1
    logmsg "Checking if $chklib64 is a 64bit library"
    if [ "x`basename $chklib64 .a`" != "x`basename $chklib64`" ]; then
        # we have an archive .a file
        logmsg " objdump -a $chklib64 | grep 'x86-64'"
        objdump -a $chklib64 | grep 'x86-64' > /dev/null 2>& 1
        ret=$?
    else
        logmsg " file -L $chklib64 | grep '64-bit'"
        file -L $chklib64 | grep '64-bit' > /dev/null 2>& 1
        ret=$?
    fi
    logmsg " result: $ret"
    if test $ret -eq 0 ; then
        is_lib64=1
        logmsg " is a 64bit library"
    fi
}

#_____________________________________________________________________
check_library() {
    # This function will try to locate a library [$1] in the specific
    # directory [$3] or in a default path [$*].  If the second argument
    # [$2] is not "no", then shared libraries are favoured.
    # The result of the search is stored in found_lib and found_dir,
    # which should be immediately copied, since the variables value will
    # be overwritten at next invocation of this function.

    # Assert that we got enough arguments
    if test $# -lt 4 ; then
        echo "check_library: Too few arguments"
        return 1
    fi

    # Save arguments in local names
    lib=$1       ; shift
    shared=$1    ; shift
    libdirl=$1   ; shift
    libdirs="$*"

    # Write a message
    checking_msg $lib

    # check if we got a specific argument as to where the library
    # is to be found
    if test ! "x$libdirl" = "x" ; then
        libdirs=$libdirl
    fi
    found_lib=no
    found_dir=no

    # Make list of libraries to search for. The .lib extension is for
    # Windoze - note $shared is always "no" on windoze, since we need
    # the .lib export library to link.
    libs=""
    for i in $lib ; do
        for ext in .a .lib "" ; do     # lib without extension for MacOS X
            libs="$libs $i$ext"
        done
    done
    slibs=""
    for i in $lib ; do
        for ext in .so .sl .dylib .dll.a ; do      # .dll.a for cygwin gcc
            slibs="$slibs $i$ext"
        done
    done
    if test ! "x$shared" = "xno" ; then
        libs="$slibs $libs"
    else
        libs="$libs $slibs"
    fi

    logmsg "libraries to check for: $libs"
    # Loop over the list of possible directories, and see if we can
    # find any of the library files as determind above.
    for i in $libdirs ; do
        # look first in the lib32 directories
        if test "x$checklib32" = "xyes" ; then
            i32=`echo $i | sed -e 's|lib$|lib32|' -e 's|lib/|lib32/|'`
            #i="$i32 $i"
            i="$i32"
        fi
        # look first in the lib64 directories
        if test "x$checklib64" = "xyes" ; then
            i64=`echo $i | sed -e 's|lib$|lib64|' -e 's|lib/|lib64/|'`
            i="$i64 $i"
        fi
        # look only in the lib64 directories
        if test "x$checkonlylib64" = "xyes" ; then
            i64=`echo $i | sed -e 's|lib$|lib64|' -e 's|lib/|lib64/|'`
            i="$i64"
        fi
        # look only in the hpux64 directories
        if test "x$checkhpux64" = "xyes" ; then
            i64=`echo $i | sed 's|\(lib\)|\1/hpux64|'`
            i="$i64"
        fi
        # look only in the amd64 directories
        if test "x$checksolaris64" = "xyes" ; then
            i64=`echo $i | sed 's|\(lib\)|\1/amd64|'`
            i="$i64"
        fi
        logmsg " Checking in directories $i for $libs"
        for l in $i ; do
            l=`echo $l | sed 's,^//,/,'`
            if test ! -d $l ; then
                continue
            fi
            for j in ${libs} ; do
                logmsg "  Checking for library $j in directory $i"
                # if we found the file (it's readable by user), we set the
                # logical variables and are on our way, otherwise we continue
                liblist=`echo $l/$j`    # expands wildcard in $l/$j
                for n in ${liblist} ; do
                    logmsg "   Checking $n"
                    if test -f $n ; then
                        logmsg "   Found file $n"
                        if test "x$checklib64" = "xyes" ; then
                            check_lib64 $n
                            if test $is_lib64 -eq 1 ; then
                                found_dir=$l
                                found_lib=$j
                                break 4
                            fi
                        else
                            found_dir=$l
                            found_lib=$j
                            if test "x$arch" = "linux"; then
                               check_lib64 $n
                            else
                               is_lib64=0
                            fi
                            if test $is_lib64 -eq 1 ; then
                                found_dir=no
                                found_lib=no
                            else
                                # skip cygwin libraries when in pure Win32 mode
                                if test "x$platform" = "xwin32"; then
                                    case $found_dir in
                                        /lib|/lib/*|/usr/*) found_dir=no ;;
                                        *) break 4;;
                                    esac
                                else
                                    break 4
                                fi
                            fi
                        fi
                    else
                        logmsg "  $j not found in $j"
                    fi
                done
            done
        done
    done

    echo $found_dir
    unset libs
    unset libdirs

    if test "x$found_dir" = "xno" || test "x$found_lib" = "xno" ; then
        found_dir=""
        found_lib=""
        found_raw_lib=""
        logmsg " library not found"
    else
        flib=""
        maclib=""
        for i in $lib ; do
            for ext in .a .lib "" ; do     # lib without extension for MacOS X
                if test "x$found_lib" = "x$i$ext" ; then
                    flib=$i$ext
                    if test "x$ext" = "x" ; then
                        maclib="yes"
                    fi
                    break 2
                fi
            done
        done

        if (test "x$found_lib" = "x$flib" && test "x$shared" = "xno") || \
           test "x$maclib" = "xyes" ; then
                found_raw_lib=${found_lib}
            found_lib=${found_dir}/${found_lib}
            found_raw_dir=${found_dir}
            found_dir=""
        else
            found_raw_lib=${found_lib}
            found_lib=`echo $found_lib | sed 's|^lib\(.*\)\..*|-l\1|'`
            found_raw_dir=${found_dir}
            found_dir=-L${found_dir}
            # Avoid inclusion of /usr/lib, which is always included anyway
            if test "x$found_dir" = "x-L/usr/lib"   || \
               test "x$found_dir" = "x-L/usr/lib32" || \
               test "x$found_dir" = "x-L/usr/lib64" ; then
                found_dir=""
            fi
        fi

        # Correct path for win32
        if test "x$platform" = "xwin32"; then
            if test ! "x$found_lib" = "x" ; then
                found_lib=`cygpath -m $found_lib`
            fi
            if test ! "x$found_dir" = "x" ; then
               found_dir=`cygpath -m $found_dir`
            fi
        fi
    fi
    unset shared
    unset slibs
    unset lib
    unset flib
    unset maclib
    unset libdirl
}

#_____________________________________________________________________
check_header()  {
    # This function will try to locate a header [$1] in the specific
    # directory [$2] or in a default path [$*].
    # The result of the search is stored in found_hdr and found_dir,
    # which should be immediately copied, since the variables value will
    # be overwritten at next invocation of this function.

    # Assert that we got enough arguments
    if test $# -lt 3 ; then
        echo "check_header: Too few arguments"
        return 1
    fi

    # Save arguments in logical names
    hdrs=$1     ; shift
    hdrdir=$1   ; shift
    hdrdirs="$*"

    # Write a message
    checking_msg $hdrs

    # Check if we got a specific argument as to where the library
    # is to be found
    if test ! "x$hdrdir" = "x" ; then
        hdrdirs=$hdrdir
    fi
    found_hdr=no
    found_dir=no

    # Loop over the list of possible directories, and see if we can
    # find any of the library files as determind above.

    for i in $hdrdirs; do
        logmsg " Checking in directory $i"
        for j in ${hdrs} ; do
            logmsg "  Checking for $j in directory $i"
            # if we found the file (it's readable by user), we set the
            # logical variables and are on our way, otherwise we continue
            if test -r $i/$j ; then
                logmsg "  $i/$j is read-able"
                found_dir=$i
                found_hdr=$j
                # skip cygwin headers when in pure Win32 mode
                if test "x$platform" = "xwin32"; then
                    case $found_dir in
                        /usr/*) found_dir="no" ;;
                        *) break 2;;
                    esac
                else
                    break 2
                fi
            fi
        done
    done

    echo $found_dir

    if test "x$found_hdr" = "xno" || test "x$found_dir" = "xno" ; then
        found_hdr=""
        found_dir=""
    fi

    # Avoid inclusion of /usr/include, which is always included anyway
    #if test "x$found_dir" = "x/usr/include" ; then
        # found_dir="include"
    #fi

    # Correct path for win32
    if test "x$platform" = "xwin32"; then
        if test ! "x$found_hdr" = "x" ; then
           found_hdr=`cygpath -m $found_hdr`
        fi
        if test ! "x$found_dir" = "x" ; then
           found_dir=`cygpath -m $found_dir`
        fi
    fi

    unset hdrs
    unset hdrdirs
    unset hdrdir
}

#_____________________________________________________________________
check_symbol() {
    # This function will try to locate a symbol [$1] in a specific
    # library [$2] and in a given directory [$3].
    # The result of the check is stored in found_symbol, 1 if true,
    # 0 otherwise, which should be immediately copied, since the variable
    # will be overwritten at next invocation of this function.

    # Assert that we got enough arguments
    if test $# -ne 3 ; then
        echo "check_symbol: not 3 arguments"
        found_symbol=0
        return 1
    fi

    # Save arguments in logical names
    symbol=$1     ; shift
    symbollib=$1  ; shift
    symboldir=$1

    if test "x$symbollib" = "x" ; then
        found_symbol=0
        return 1
    fi

    symbollib=`echo $symbollib | sed -e 's/^-l/lib/'`

    if test ! "x$symboldir" = "x" ; then
        symboldir=`echo $symboldir | sed -e 's/^-L//'`
    fi

    # Check if we got a specific argument as to where the library
    # is to be found
    symbolfile=$symbollib
    exts=".so .lib .dylib"
    if test ! "x$shared" = "xno" ; then
        exts="$exts .a"
    else
        exts=".a $exts"
    fi

    usrlib="/usr/lib"
    # look first in the lib32 directories
    if test "x$checklib32" = "xyes" ; then
        usrlib="/usr/lib32 $usrlib"
    fi
    # look first in the lib64 directories
    if test "x$checklib64" = "xyes" ; then
        usrlib="/usr/lib64 $usrlib"
    fi
    # look only in the lib64 directories
    if test "x$checkonlylib64" = "xyes" ; then
        usrlib="/usr/lib64"
    fi
    # look only in the hpux64 directories
    if test "x$checkhpux64" = "xyes" ; then
        usrlib="/usr/lib/hpux64"
    fi
    # look only in the amd64 directories
    if test "x$checkamd64" = "xyes" ; then
        usrlib="/usr/lib/amd64"
    fi

    for d in "$symboldir" $usrlib ; do
        logmsg " Checking in $d"
        if test ! -r $d/$symbollib ; then
            logmsg "  $d/$symbollib not readable"
            for i in $exts ; do
                logmsg "   Checking extension $i with $d/$symbollib"
                if test -r $d/$symbollib$i ; then
                    logmsg "   $d/$symbollib$i readable"
                    symbolfile=$d/$symbollib$i
                    break 2
                fi
             done
        else
            logmsg "$d/$symbollib readable"
            symbolfile=$d/$symbollib
            break
        fi
    done

    if test "x$symbolfile" = "x" || test ! -r $symbolfile ; then
       found_symbol=0
       logmsg " Symbol not found"
       return 1
    fi

    checking_msg "$symbol in $symbolfile"
    nm $symbolfile 2>&1 | grep $symbol > /dev/null 2>&1
    if test $? -eq 0 ; then
        found_symbol=1
        logmsg " Symbol found"
    else
        nm $symbolfile 2>&1 | grep "no symbols" > /dev/null 2>&1
        if test $? -eq 0 ; then
            logmsg " $symbolfile is stripped, trying a link"
            # stripped library - only safe test is to link against the
            # library!  However, we do not know what compiler to use
            # so we can not do the test.  Assume the symbol is in
            cat <<EOF > conftest.mk
include config/Makefile.${arch}
conftest:conftest.c $symbolfile
	\$(CC) \$(CFLAGS) \$(LDFLAGS) $symbolfile \$< -o \$@

conftest.c:
	echo "extern int $symbol (); " > \$@
	echo "int main() { $symbol (); return 0; }" >> \$@
EOF
            $gnumake -f conftest.mk >> $logfile 2>&1
            if test $? -eq 0 ; then
                found_symbol=1
                logmsg " Link OK"
            else
                found_symbol=0
                logmsg " Failed code was"
                cat conftest.mk >> $logfile
            fi
            rm -rf conftest.c conftest.mk conftest
        else
            found_symbol=0
        fi
    fi
    if test $found_symbol -eq 1 ; then
        result "ok"
    else
        result "no"
    fi
}

#_____________________________________________________________________
check_comp() {
    # This function will try to locate the default or alt compiler
    # type [$1] in the PATH.
    # The result of the check is stored in found_comp, 1 if true,
    # 0 otherwise, which should be immediately copied, since the variable
    # will be overwritten at next invocation of this function.

    # Assert that we got enough arguments
    if test $# -ne 1 ; then
        echo "check_comp: not 1 argument"
        found_comp=0
        return 1
    fi

    comptype="$1"

    if test "x$comptype" = "xLD" ; then
       message "Checking for linker (LD)"
    else
       message "Checking for $comptype compiler"
    fi

    found_comp=0
    case $comptype in
    C)
        if test "x$altcc" = "x" ; then
            altcc=`grep '^CC ' config/Makefile.$arch | awk '{ if (NF==3) {print $3; exit 0} }'`
        fi
        altcc1=`echo "$altcc" | awk '{print $1}'`
        if `$cwhich $altcc1 > /dev/null 2>&1` ; then
            found_comp=1
            result "$altcc"
        else
            nocomp="$altcc"
        fi
        ;;
    C++)
        if test "x$altcxx" = "x" ; then
            altcxx=`grep '^CXX ' config/Makefile.$arch | awk '{ if (NF==3) {print $3; exit 0} }'`
        fi
        altcxx1=`echo "$altcxx" | awk '{print $1}'`
        if `$cwhich $altcxx1 > /dev/null 2>&1` ; then
            found_comp=1
            result "$altcxx"
        else
            nocomp="$altcxx"
        fi
        ;;
    LD)
        if test "x$altld" = "x" ; then
            altld=`grep '^LD ' config/Makefile.$arch | awk '{ if (NF==3) {print $3; exit 0} }'`
            if test "x$arch" = "xwin32" ; then
                altldorg="link"
                altldtmp="$altld"
                altld="$altldorg"
            fi
            if test "x$arch" = "xwin32gcc" ; then
                altldorg="g++"
                altldtmp="$altld"
                altld="$altldorg"
            fi
        fi
        altld1=`echo "$altld" | awk '{print $1}'`
        if `$cwhich $altld1 > /dev/null 2>&1` ; then
            found_comp=1
            if test ! "x$altldtmp" = "x" ; then
                altld="$altldtmp"
            fi
            result "$altld"
        else
            nocomp="$altld"
            altldorg=""
        fi
        ;;
    F77)
        if test "x$altf77" = "x" ; then
            altf77=`grep '^F77 ' config/Makefile.$arch | awk '{ if (NF==3) {print $3; exit 0} }'`
            if test "x$arch" = "xwin32" ; then
                altf77org="fl32"
                altf77tmp="$altf77"
                altf77="$altf77org"
            fi
        fi
        altf771=`echo "$altf77" | awk '{print $1}'`
        if `$cwhich $altf771 > /dev/null 2>&1` ; then
            found_comp=1
            if test ! "x$altf77tmp" = "x" ; then
                altf77="$altf77tmp"
            fi
            result "$altf77"
        else
            nocomp="$altf77"
            altf77org=""
        fi
        ;;
    esac

    if test $found_comp -eq 0 ; then
       result "no $comptype compiler $nocomp found"
    fi
}

#_____________________________________________________________________
check_explicit()
{
    feat=$1 ; shift
    expl=$1 ; shift
    emsg=$1 ; shift

    if test "x$fail_on_missing" = "xno" ; then return 0 ; fi
    if test ! "x$expl" = "xyes" ; then return 0 ; fi
    if test ! "x$feat" = "xyes" ; then
        result $emsg
        exit 1
    fi
}

#_____________________________________________________________________
guess_architecture() {
    # Try to guess the architecture of the host system
    # Note, that there's no attempt at guessing the compiler.
    # The `native' compiler is used in all cases.
    # If a user really want a specifific compiler, s/he better use the
    # first argument to do so.
    arch=`uname -s | tr '[A-Z]' '[a-z]'`
    chip=`uname -m | tr '[A-Z]' '[a-z]'`
    rele=`uname -r`
    logmsg "arch=$arch"
    logmsg "chip=$chip"
    logmsg "rele=$rele"
    case "$arch:$chip:$rele" in
        aix*)                  arch=aix5            ;;
        osf1*:alpha:*)         arch=alphacxx6       ;;
        freebsd*:*:7*)         arch=freebsd7        ;;
        freebsd*:*:6*)         arch=freebsd5        ;;
        freebsd*:*:5*)         arch=freebsd5        ;;
        freebsd*:*:4*)         arch=freebsd4        ;;
        freebsd*:*:*)          arch=freebsd         ;;
        hp-ux:ia64:*)          arch=hpuxia64acc     ;;
        hp-ux:*:*)             arch=hpuxacc         ;;
        hurd*:*:*)             arch=hurddeb         ;;
        linux:ia64:*)          arch=linuxia64gcc    ;;
        linux:x86_64:*)        arch=linuxx8664gcc   ;;
        linux:alpha:*)         arch=linuxalphagcc   ;;
        linux:arm*:*)          arch=linuxarm        ;;
        linux:hppa*:*)         arch=linux           ;;
        linux:mips:*)          arch=linuxmips       ;;
        linux:sparc*:*)        arch=linux           ;;
        linux:parisc*:*)       arch=linuxhppa       ;;
        linux:ppc64*:*)        arch=linuxppc64gcc   ;;
        linux:ppc*:*)          arch=linuxppcgcc     ;;
        linux:i*86:*)          arch=linux           ;;
        linux:s39*:*)          arch=linux           ;;
        openbsd*:*:*)          arch=openbsd         ;;
        lynx:*:*)              arch=lynxos          ;;
        darwin:power*:*)       arch=macosx          ;;
        darwin:*86*:*)         arch=macosx          ;;
        irix*:sgi*:*)          arch=sgicc           ;;
        sunos:sun*:6*)         arch=solarisCC5      ;;
        sunos:sun*:5*)         arch=solarisCC5      ;;
        sunos:sun*:4*)         arch=solaris         ;;
        sunos:i86pc:5*)        arch=solarisCC5      ;;
        cygwin_*:*86:*)        arch=win32           ;;
        cygwin_*:pentium:*)    arch=win32           ;;
        cygwin_*:ia64)         arch=win32           ;;
        *)
            echo "Attempts at guessing your architecture failed."
            echo "(triplet is $arch:$chip:$rele)"
            echo "Please specify the architecture as the first argument."
            echo "Do '$0 --help' for a list of avaliable architectures."
            echo "Or file a bug at https://savannah.cern.ch/projects/savroot/"
            echo "including the full config.log and a dump of"
            echo "  touch dummy_file.c; gcc -E -dM dummy_file.c"
            exit 1
            ;;
    esac
    if [ "$arch" = "macosx" ]; then
       if [ `sw_vers | sed -n 's/ProductVersion://p' | cut -d . -f 2` -ge 5 ]; then
          if `sysctl machdep.cpu.extfeatures | grep "64" > /dev/null  2>&1` ; then
             arch=macosx64
          fi
       fi
    fi
    # CC in 64-bit fails on the asm in the dictionaries, disable
    # automatic detection for now (rdm)
    #if [ "$arch" = "solarisCC5" -a "$chip" = "i86pc" ]; then
    #   if `isainfo -b | grep "64" > /dev/null  2>&1` ; then
    #      arch=solaris64CC5
    #   fi
    #fi
    logmsg "$arch"
}

###################################################################
#
### echo %%% Some skeleton and config files
#
ARCHS=config/ARCHS
MAKEIN=config/Makefile.in
MAKEOUT=config/Makefile.config
MAKECOMPIN=config/Makefile-comp.in
MAKECOMPOUT=config/Makefile.comp
CONFIGUREIN=config/RConfigure.in
CONFIGUREOUT=include/RConfigure.h
CONFIGOPTIN=config/RConfigOptions.in
CONFIGOPTOUT=include/RConfigOptions.h
RCONFIN=config/root-config.in
RCONFOUT=bin/root-config
ROOTRCIN=config/rootrc.in
ROOTRCOUT=etc/system.rootrc
ROOTAUTHRCIN=config/rootauthrc.in
ROOTAUTHRCOUT=etc/system.rootauthrc
ROOTDAEMONRCIN=config/rootdaemonrc.in
ROOTDAEMONRCOUT=etc/system.rootdaemonrc
MEMPROBEIN=config/memprobe.in
MEMPROBEOUT=bin/memprobe
MIMEUNIXIN=config/mimes.unix.in
MIMEWIN32IN=config/mimes.win32.in
MIMEOUT=etc/root.mimes
ROOTDIN=config/rootd.in
ROOTDOUT=etc/daemons/rootd.rc.d
ROOTDXINETDIN=config/rootd.xinetd.in
ROOTDXINETDOUT=etc/daemons/rootd.xinetd
PROOFDIN=config/proofd.in
PROOFDOUT=etc/daemons/proofd.rc.d
PROOFDXINETDIN=config/proofd.xinetd.in
PROOFDXINETDOUT=etc/daemons/proofd.xinetd
XROOTDIN=config/xrootd.in
XROOTDOUT=etc/daemons/xrootd.rc.d
OLBDIN=config/olbd.in
OLBDOUT=etc/daemons/olbd.rc.d
ROOTHELPIN=config/root-help.el.in
ROOTHELPOUT=build/misc/root-help.el
HTMLIN=config/html.C.in
HTMLOUT=macros/html.C
THISROOTSHIN=config/thisroot.sh
THISROOTSHOUT=bin/thisroot.sh
THISROOTCSHIN=config/thisroot.csh
THISROOTCSHOUT=bin/thisroot.csh
THISROOTBATIN=config/thisroot.bat
THISROOTBATOUT=bin/thisroot.bat
GENREFLEXSHIN=config/genreflex.in
GENREFLEXSHOUT=bin/genreflex
GENREFLEXBATIN=config/genreflex.bat.in
GENREFLEXBATOUT=bin/genreflex.bat
GENREFLEXROOTCINTSHIN=config/genreflex-rootcint.in
GENREFLEXROOTCINTSHOUT=bin/genreflex-rootcint
GENREFLEXROOTCINTBATIN=config/genreflex-rootcint.bat.in
GENREFLEXROOTCINTBATOUT=bin/genreflex-rootcint.bat
ROOTCINTSTUBSHIN=utils/src/rootcint_nostubs.sh
ROOTCINTSTUBSHOUT=bin/rootcint_nostubs.sh

# unset global command options that can cause havoc
unset GREP_OPTIONS

######################################################################
#
### echo %%% Testing the echo features
#
if `(echo "testing\c"; echo 1,2,3) | grep c > /dev/null` ; then
  if `(echo -n testing; echo 1,2,3) | sed s/-n/xn/ | grep xn > /dev/null`; then
    ac_n= ac_c='
' ac_t='	'
  else
    ac_n=-n ac_c= ac_t=
  fi
else
  ac_n= ac_c='\c' ac_t=
fi

######################################################################
#
### echo %%% Help function
#
confhelp() {
vers=`cat build/version_number`
cat <<EOF
'configure' configures ROOT $vers to adapt to many kind of systems.

Usage:     $0 [architecture] [flag=value]

The architecture to build for will be guessed from the output of 'uname'.
If, however, that fails, or you don't want the 'native' compiler on the
host platform, you can specify the architecture to use by passing as the
FIRST argument one of the architecures given at the end of this message.