# This is a perl script -*- perl -*-
#
# we get the configuration name from a database (for now it is computed)
# from some environment variables
#


#
# we build a table with all the command line valid options
#



@valid_options = ("MWARCH", "MWOS", "MWCC", "MWCCPP", "MWCCPP_NAME",
		  "MWEXE_OPTIONS", "MWLIBRARY_OPTIONS", "MWVERSION", "MWTHREAD_MOCK", 
		  "MWUSERX") ;

foreach $envvar (@valid_options) {
    $option_from_environment{$envvar} = 1;
}

push (@valid_options,"OUTPUT_FORMAT");


#
# we build a table with normal C and C++ compiler names
#
$normal_C{'sparc_sunos4'}="acc";
$normal_CPP{'sparc_sunos4'}="CC";
$normal_Arch{'sunos4'}='sparc';
$normal_C{'sparc_sunos5'}="cc";
$normal_CPP{'sparc_sunos5'}="CC";
$normal_Arch{'sunos5'}='sparc';
$normal_C{'i86_linux'}="gcc";
$normal_CPP{'i86_linux'}="g++";
$normal_C{'i86_sunos5'}="cc";
$normal_CPP{'i86_sunos5'}="CC";
$normal_Arch{'linux'}='i86';
$normal_C{'hp700_ux9'}="c89";
$normal_CPP{'hp700_ux9'}="CC";
$normal_Arch{'ux9'}='hp700';
$normal_C{'hp700_ux10'}="c89";
$normal_CPP{'hp700_ux10'}="aCC";
$normal_Arch{'ux10'}='hp700';
$normal_C{'hp700_ux11'}="c89";
$normal_CPP{'hp700_ux11'}="aCC";
$normal_Arch{'ux11'}='hp700';
$normal_C{'rs6000_aix3'}="cc";
$normal_CPP{'rs6000_aix3'}="xlC";
$normal_Arch{'aix3'}='rs6000';
$normal_C{'rs6000_aix4'}="xlC_r";
$normal_CPP{'rs6000_aix4'}="xlC_r";
$normal_Arch{'aix4'}='rs6000';
$normal_C{'mips_irix53'}="cc";
$normal_CPP{'mips_irix53'}="CC";
$normal_Arch{'irix53'}='mips';
$normal_C{'mips_irix6'}="cc";
$normal_CPP{'mips_irix6'}="CC";
$normal_Arch{'irix6'}='mips';
$normal_C{'alpha_osf1v2'}="cc";
$normal_CPP{'alpha_osf1v2'}="cxx";
$normal_Arch{'osf1v2'}='alpha';
$normal_C{'alpha_osf1v4'}="cc";
$normal_CPP{'alpha_osf1v4'}="cxx";
$normal_Arch{'osf1v4'}='alpha';
$normal_C{'i86_sco5'}="cc";
$normal_CPP{'i86_sco5'}="CC";
$normal_Arch{'sco5'}='i86';
$normal_C{'mips_news6'}="cc";
$normal_CPP{'mips_news6'}="CC";
$normal_Arch{'news6'}='mips';
$normal_C{'mips_sysvr4_2'}="cc";
$normal_CPP{'mips_sysvr4_2'}="CC";
$normal_Arch{'sysvr4_2'}='mips';

#
# we look for all these options in the command line
#

while ($option_string=shift(@ARGV)) {
    foreach $option (@valid_options) {
	if ($option_string =~ /$option=(.*)/) {
	    $option_value{$option} = $1;
	    $option_detected{$option} = 1;
	}
    }
}

#
# when options are not there, we look in the environment
#

foreach $option (@valid_options) {
    if ($option_detected{$option} == 1) {
        eval '$' . $option . '=$option_value{' . $option . '}';
    } else {
        if ($option_from_environment{$option} == 1) {
	    eval '$' . $option . '=$ENV{' . $option . '}';
        }
    }
}

#
# rebuild MWARCH_OS
#
${MWARCH_OS}="${MWARCH}_${MWOS}";

#
# MWCC and MWCCPP might be pathnames or have embeded compiler options
#

if ($MWCC =~ /^([^ \t]+).*/) {
    $MWSTRIPPED_CC=${1};	
    #remove directory name
    if ($MWSTRIPPED_CC =~ /\//) {
        $MWSTRIPPED_CC =~ /.*\/([^\/]+)$/;
        $MWSTRIPPED_CC= ${1};
    }
}

if ($MWCCPP =~ /^([^ \t]+).*/) {
    $MWSTRIPPED_CCPP=${1};
    # remove directory name
    if ($MWSTRIPPED_CCPP =~ /\//) {
	$MWSTRIPPED_CCPP =~ /.*\/([^\/]+)$/;
        $MWSTRIPPED_CCPP= ${1};
    }
}
#
# remove C or C++ compiler name if not necessary
#

if ($normal_C{$MWARCH_OS} eq $MWSTRIPPED_CC){
    $MWCC_NAME="";
} else {
    $MWCC_NAME=$MWSTRIPPED_CC;
}

if (($normal_CPP{$MWARCH_OS} eq $MWSTRIPPED_CCPP) || 
    (length($MWSTRIPPED_CCPP) == 0)){
    $MWCCPP_NAME="";
} else {
    $MWCCPP_NAME=$MWSTRIPPED_CCPP;
}


# Do not decorate with arch name, if normal

if (${MWARCH} eq $normal_Arch{${MWOS}}) {
    $MWARCH = "";
}
#
# build the library name from all this information
#

&add_to_configname(${MWARCH});
&add_to_configname(${MWOS});
&add_to_configname(${MWVERSION});
# Compiler names should not effect the configuration name, since a misspelled
# compiler can cause us to loose utilites, because the path will change.
#&add_to_configname(${MWCC_NAME});
#&add_to_configname(${MWCCPP_NAME});
&add_to_configname(${MWEXE_OPTIONS});
&add_to_configname(${MWLIBRARY_OPTIONS});
if ( $ENV{'MWBCONF'} eq "mips_irix6_32_tsold" ) {
	&add_to_configname("old");
}

if ($option_value{'OUTPUT_FORMAT'} eq 'SUFFIX') {
    print "${MWCONFIG_NAME}";
} else {
    print "${MWCONFIG_NAME} ${MWSTRIPPED_CC} ${MWSTRIPPED_CCPP}";
}

print "\n";

sub add_to_configname {
    local($name_to_add) = shift (@_);

    $LENGTH=length($name_to_add);
    if ($LENGTH >0) {
	if (length($MWCONFIG_NAME) > 0) {
	    $MWCONFIG_NAME = "${MWCONFIG_NAME}_${name_to_add}";
	} else {
	    $MWCONFIG_NAME=${name_to_add};
        }
    }
}