#! /bin/sh
### ##########################################################################
### MALOC = < Minimal Abstraction Layer for Object-oriented C >
### Copyright (C) 1994-- Michael Holst
### 
### This library is free software; you can redistribute it and/or
### modify it under the terms of the GNU Lesser General Public
### License as published by the Free Software Foundation; either
### version 2.1 of the License, or (at your option) any later version.
### 
### This library is distributed in the hope that it will be useful,
### but WITHOUT ANY WARRANTY; without even the implied warranty of
### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
### Lesser General Public License for more details.
### 
### You should have received a copy of the GNU Lesser General Public
### License along with this library; if not, write to the Free Software
### Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
### 
### rcsid="$Id: mk,v 1.3 2010/08/12 05:40:10 fetk Exp $"
### ##########################################################################

##############################################################################
# Purpose: Master mk script for managing the code MC.
#
# Notes:
#
# (1) The following UNIX tools need to be present for this script to
#     function correctly:
#
#         - sh (a bourne-compatible shell with an implementation of functions)
#         - pwd (a builtin or utility to identify the current directory)
#         - sed (the standard stream editor)
#         - awk (the standard awkward unix tool)
#         - make (a standard unix make utility with no required extensions)
#         - cc (an ANSI C-Compiler, employing an ANSI C-Preprocessor)
#
#     The "tgz" option also requires:
#
#         - touch (a standard unix file utility)
#         - tar (the standard unix tape archive utility)
#         - gzip (the GNU Project's compress/decompress utility)
#
# (2) In order to use the auto-config option, the following environment 
#     variable is assumed to be pre-defined by the shell (or the user):
#         
#         - OSTYPE (Linux, IRIX, IRIX64, NeXT, etc)
#
#     I rely on the OSTYPE environment variable rather than some UNIX
#     utility like "uname" to determine the OS and hardware because 
#     uname and related utilities does not exist on some UNIX platforms
#     (e.g., NeXT).  OSTYPE is pre-defined by bash, tcsh, etc, so if you
#     use a modern shell, this should just work for you.  If not, you 
#     will need to define OSTYPE yourself, or simply use the manual
#     configuration option.
#
# (3) If your bourne-compatible shell doesn't support functions, then you
#     can't build MC using this tool.  Your best options are (1) install
#     "bash" (the "Bourne Again SHell", the GNU Project's bourne-compatible
#     shell, implementing a superset of the standard Bourne shell), or
#     (2) install "ksh" (the "Korn shell").  Both of these powerful shells
#     are available for free on the internet, and can be installed on nearly
#     any platform (UNIX, WindowsXX, OS/2, BeOS, NeXT, ...).
#
# Author:  Michael Holst
##############################################################################

##############################################################################
# Required UNIX support tools for this shell script
##############################################################################

# Make environment
SH="sh"
PWD="pwd"
SED="sed"
AWK="awk"
MAKE="make"

# Extended tgz make environment
TOUCH="touch"
TAR="tar"
GZIP="gzip"

# Make arguments (PARAMAKE may be inherited from the shell)
MK_MAKARG="-s ${PARAMAKE}"

##############################################################################
# Routine: getMkLibs()
# Purpose: Define the list of libraries to build.
#          Note that things will be built following the list order.
##############################################################################
getMkLibs() {
    MK_LIBS="ef vnm glw vor vblas vslu vgl vto vgm vmc bin" ;
}

##############################################################################
# Routine: make_ef()
# Purpose: Build the ElectricFence library "libef.a"
##############################################################################
libs_ef() { LIBDIRS="src/ef tst/ef" ; }
make_ef() {
    CMD="$1"
    ARG="$2"
    if [ "${CMD}" = "killMakefile" ]; then
        exec_lib "ef" "${CMD}" "${ARG}"
    elif [ "${MC_EF}" = "yes" ]; then
        exec_lib "ef" "${CMD}" "${ARG}"
    fi
}

##############################################################################
# Routine: make_glw()
# Purpose: Build the OpenGL library "libGLw.a"
##############################################################################
libs_glw() { LIBDIRS="src/glw tst/glw" ; }
make_glw() {
    CMD="$1"
    ARG="$2"
    if [ "${CMD}" = "killMakefile" ]; then
        exec_lib "glw" "${CMD}" "${ARG}"
    elif [ ! "${XLDL}" = "" ]; then
        exec_lib "glw" "${CMD}" "${ARG}"
    fi
}

##############################################################################
# Routine: make_vblas()
# Purpose: Build the MC library "libvblas.a"
##############################################################################
libs_vblas() { LIBDIRS="src/vblas tst/vblas" ; }
make_vblas() {
    CMD="$1"
    ARG="$2"
    exec_lib "vblas" "${CMD}" "${ARG}" ;
}

##############################################################################
# Routine: make_vslu()
# Purpose: Build the MC library "libvslu.a"
##############################################################################
libs_vslu() { LIBDIRS="src/vslu tst/vslu" ; }
make_vslu() {
    CMD="$1"
    ARG="$2"
    exec_lib "vslu" "${CMD}" "${ARG}" ;
}

##############################################################################
# Routine: make_vnm()
# Purpose: Build the MC library "libvnm.a"
##############################################################################
libs_vnm() { LIBDIRS="src/vnm tst/vnm" ; }
make_vnm() {
    CMD="$1"
    ARG="$2"
    exec_lib "vnm" "${CMD}" "${ARG}" ;
}

##############################################################################
# Routine: make_vor()
# Purpose: Build the MC library "libvor.a"
##############################################################################
libs_vor() { LIBDIRS="src/vor tst/vor" ; }
make_vor() {
    CMD="$1"
    ARG="$2"
    exec_lib "vor" "${CMD}" "${ARG}" ;
}

##############################################################################
# Routine: make_vto()
# Purpose: Build the MC library "libvto.a"
##############################################################################
libs_vto() { LIBDIRS="src/vto tst/vto" ; }
make_vto() {
    CMD="$1"
    ARG="$2"
    exec_lib "vto" "${CMD}" "${ARG}" ;
}

##############################################################################
# Routine: make_vgl()
# Purpose: Build the MC library "libvgl.a"
##############################################################################
libs_vgl() { LIBDIRS="src/vgl tst/vgl" ; }
make_vgl() {
    CMD="$1"
    ARG="$2"
    if [ "${CMD}" = "killMakefile" ]; then
        exec_lib "vgl" "${CMD}" "${ARG}"
    elif [ "${MC_GL}" = "yes" ]; then
        exec_lib "vgl" "${CMD}" "${ARG}"
    fi
}

##############################################################################
# Routine: make_vgm()
# Purpose: Build the MC library "libvgm.a"
##############################################################################
libs_vgm() { LIBDIRS="src/vgm tst/vgm" ; }
make_vgm() {
    CMD="$1"
    ARG="$2"
    exec_lib "vgm" "${CMD}" "${ARG}" ;
}

##############################################################################
# Routine: make_vmc()
# Purpose: Build the MC library "libvmc.a"
##############################################################################
libs_vmc() { LIBDIRS="src/vmc tst/vmc" ; }
make_vmc() {
    CMD="$1"
    ARG="$2"
    exec_lib "vmc" "${CMD}" "${ARG}" ;
}

##############################################################################
# Routine: make_bin()
# Purpose: Build the MC work binaries.
##############################################################################
libs_bin() { LIBDIRS="work/bin" ; }
make_bin() {
    CMD="$1"
    ARG="$2"
    exec_lib "bin" "${CMD}" "${ARG}" ;
}

##############################################################################
# Routine: exec_lib()
# Purpose: Execute command with argument in directories ${LIBDIRS}.
#          The first argument represents a library function name to use.
#          (This function name then defines LIBDIR for use.)
#          The second argument represents the command to execute.
#          The third argument represents the arguments for the command.
##############################################################################
exec_lib() {
    MI_LIB="$1"
    MI_CMD="$2"
    MI_ARG="$3"
    "libs_${MI_LIB}"
    for thelib in ${LIBDIRS}; do
        "${MI_CMD}" "${thelib}" "${MI_ARG}"
    done
}

##############################################################################
# Routine: printMenu()
# Purpose: Generate and print short "usage" menu.
##############################################################################
printMenu() {
    echo "${PR}"
    echo "${PR}        ${MK_NAME} -- MaKe Utility"\
                       "for Configuring and Building MC."
    echo "${PR}"
    echo "${PR} Usage: ./${MK_NAME}                "\
                       " (Print this info but take no action)"
    echo "${PR}        ./${MK_NAME} go     [OS]    "\
                       " (Do: config->clean->dep->build     )"
    echo "${PR}        ./${MK_NAME} config [OS]    "\
                       " (Configure the package             )"
    echo "${PR}        ./${MK_NAME} clean  [OS]    "\
                       " (rm -f *.o                         )"
    echo "${PR}        ./${MK_NAME} dep    [OS]    "\
                       " (makedepend                        )"
    echo "${PR}        ./${MK_NAME} build  [OS]    "\
                       " (Build the package                 )"
    echo "${PR}        ./${MK_NAME} brkdep [OS]    "\
                       " (breakdepend                       )"
    echo "${PR}        ./${MK_NAME} rclean [OS|all]"\
                       " (Total cleanup of OS or of all     )"
    echo "${PR}        ./${MK_NAME} tgz            "\
                       " (Make tgz file after doing rclean  )"
    echo "${PR}        ./${MK_NAME} info           "\
                       " (Print additional usage information)"
    echo "${PR}"
}

##############################################################################
# Routine: printInfo()
# Purpose: Generate and print "usage" menu.
##############################################################################
printInfo() {
    echo "${PR}"
    echo "${PR} Info:  If you do not supply the optional OS argument,"\
                       "${MK_NAME} tries"
    echo "${PR}        to determine your platform by looking at the OSTYPE    "
    echo "${PR}        environment variable (predefined by most UNIX shells). "
    echo "${PR}        You can influence this choice by resetting the OSTYPE  "
    echo "${PR}        variable yourself, or by giving the OS argument.       "
    echo "${PR}"
    echo "${PR}        ${MK_NAME} then looks for a config file in"\
                       "<mc/cnf/platform>.  "
    echo "${PR}        If none is found, ${MK_NAME} uses a generic UNIX/X"\
                       "config file."
    echo "${PR}        You can add a new platform by copying the generic file "
    echo "${PR}        to your new (uniquely named) file in the directory     "
    echo "${PR}        <mc/cnf/platform>, and editing the file as needed.  "
    echo "${PR}"
    echo "${PR} Config files currently in <mc/cnf/platform> for selecting OS: "
    echo "${PR}"
    PLATFORMS=`ls -1 ${MC_CONFIG}/platform \
             | ${SED} -e "s./..g" | ${SED} -e "s.CVS..g"`;
    for platform in ${PLATFORMS}; do
        . ${MC_CONFIG}/platform/${platform}
        echo "${PR}        ${platform}"\
             "   (${PLATFORM}, EF=${EFENCE}, OPENGL=${OPENGL})"
    done
    echo "${PR}"
}

##############################################################################
# Routine: getConfig()
# Purpose: Do an auto- or manual-configuration.
#          If no arguments given, try an auto-configuration is based on the
#          OSTYPE environment variable.
#          If one argument is given, try a manual configuration based on 
#          that argument.
#          After this routine exits, the platform is at least well-defined.
##############################################################################
getConfig() {

    # Auto configuration
    if [ $# -eq 0 ]; then
        MC_OS=${OSTYPE}
        MYOSKEY="OSTYPE"

    # Manual configuration
    elif [ $# -eq 1 ]; then
        MC_OS=$1
        MYOSKEY="OS"
    fi

    # Check for a valid platform
    if [ -f "${MC_CONFIG}/platform/${MC_OS}" ]; then
        echo "${PR} Platform <${MC_OS}> WAS found from <${MYOSKEY}>."
    else
        # Attempt to map MC_OS to more canonical names
        case ${MC_OS} in
            NeXT*)        MC_OS="next" ;;
            next*)        MC_OS="next" ;;
            Rhapsody*)    MC_OS="rhapsody" ;;
            rhapsody*)    MC_OS="rhapsody" ;;
            Solaris*)     MC_OS="sunos" ;;
            solaris*)     MC_OS="sunos" ;;
            SunOS*)       MC_OS="sunos" ;;
            sunos*)       MC_OS="sunos" ;;
            *BSD)         MC_OS="bsd" ;;
            *bsd)         MC_OS="bsd" ;;
            Linux)        MC_OS="linux" ;;
            linux)        MC_OS="linux" ;;
            IRIX)         MC_OS="irix" ;;
            Irix)         MC_OS="irix" ;;
            irix)         MC_OS="irix" ;;
            IRIX64)       MC_OS="irix64" ;;
            Irix64)       MC_OS="irix64" ;;
            irix64)       MC_OS="irix64" ;;
            Irix6)        MC_OS="irix" ;;
            irix6)        MC_OS="irix" ;;
            osf*)         MC_OS="osf1" ;;
            OSF*)         MC_OS="osf1" ;;
        esac
        if [ -f "${MC_CONFIG}/platform/${MC_OS}" ]; then
            echo "${PR} Platform <${MC_OS}> WAS found from <${MYOSKEY}>."
        else
            echo "${PR} Platform <${MC_OS}> WAS NOT found from <${MYOSKEY}>. "\
                  "Using <generic>."
            MC_OS="generic"
        fi
    fi

    # Finally, read in the correct config file
    . ${MC_CONFIG}/platform/${MC_OS}
    MC_PL="${PLATFORM}"
    MC_EF="${EFENCE}"
    MC_GL="${OPENGL}"

    # Define the library path (now that MC_OS is defined)
    MC_LIB="${MC_ROOT}/lib/${MC_OS}"
}

##############################################################################
# Routine: genConfig()
# Purpose: Given a valid configuration, generate all of the makefiles.
#          We ASSUME that getConfig() has already been called, so that the
#          appropriate platform file has already been read in, and the 
#          following variables (among others) are already well-defined:
#
#              MC_OS, MC_PL, MC_EF, MC_GL, MC_LIB
#
#          After this routine exits, the platform is configured and ready
#          to clean/dep/build/etc.
##############################################################################
genConfig() {
    # Read in the current (assumed valid) configuration file
    echo "${PR} Configuring with <${MC_OS}> platform config file."
    echo "${PR} Platform is  = <${MC_PL}>"
    echo "${PR} EF libraries = <${MC_EF}>"
    echo "${PR} GL libraries = <${MC_GL}>"

    # Generate the premake.${MC_OS} file
    echo "# DO NOT EDIT -- automatically built from config file <${MC_OS}>" \
                                      > ${MC_CONFIG}/premake.${MC_OS}
    echo ""                          >> ${MC_CONFIG}/premake.${MC_OS}
    echo "    PLATFORM=${PLATFORM}"  >> ${MC_CONFIG}/premake.${MC_OS}
    echo ""                          >> ${MC_CONFIG}/premake.${MC_OS}
    echo "       MC_OS=${MC_OS}"     >> ${MC_CONFIG}/premake.${MC_OS}
    echo "     MC_ROOT=${MC_ROOT}"   >> ${MC_CONFIG}/premake.${MC_OS}
    echo "    MC_TOOLS=${MC_TOOLS}"  >> ${MC_CONFIG}/premake.${MC_OS}
    echo "   MC_CONFIG=${MC_CONFIG}" >> ${MC_CONFIG}/premake.${MC_OS}
    echo "      MC_BIN=${MC_BIN}"    >> ${MC_CONFIG}/premake.${MC_OS}
    echo "      MC_INC=${MC_INC}"    >> ${MC_CONFIG}/premake.${MC_OS}
    echo "      MC_LIB=${MC_LIB}"    >> ${MC_CONFIG}/premake.${MC_OS}
    echo ""                          >> ${MC_CONFIG}/premake.${MC_OS}
    echo "    CPPFLAGS=${CPPFLAGS}"  >> ${MC_CONFIG}/premake.${MC_OS}
    echo "          CC=${CC}"        >> ${MC_CONFIG}/premake.${MC_OS}
    echo "          FC=${FC}"        >> ${MC_CONFIG}/premake.${MC_OS}
    echo "          PC=${PC}"        >> ${MC_CONFIG}/premake.${MC_OS}
    echo "      CFLAGS=${CFLAGS}"    >> ${MC_CONFIG}/premake.${MC_OS}
    echo "      FFLAGS=${FFLAGS}"    >> ${MC_CONFIG}/premake.${MC_OS}
    echo "      PFLAGS=${PFLAGS}"    >> ${MC_CONFIG}/premake.${MC_OS}
    echo "       CWARN=${CWARN}"     >> ${MC_CONFIG}/premake.${MC_OS}
    echo "       FWARN=${FWARN}"     >> ${MC_CONFIG}/premake.${MC_OS}
    echo "       PWARN=${PWARN}"     >> ${MC_CONFIG}/premake.${MC_OS}
    echo "        XINC=${XINC}"      >> ${MC_CONFIG}/premake.${MC_OS}
    echo "        XLIB=${XLIB}"      >> ${MC_CONFIG}/premake.${MC_OS}
    echo "        XLDL=${XLDL}"      >> ${MC_CONFIG}/premake.${MC_OS}
    echo "        GINC=${GINC}"      >> ${MC_CONFIG}/premake.${MC_OS}
    echo "        GLIB=${GLIB}"      >> ${MC_CONFIG}/premake.${MC_OS}
    echo "        GLDL=${GLDL}"      >> ${MC_CONFIG}/premake.${MC_OS}
    echo "        MINC=${MINC}"      >> ${MC_CONFIG}/premake.${MC_OS}
    echo "        MLIB=${MLIB}"      >> ${MC_CONFIG}/premake.${MC_OS}
    echo "        MLDL=${MLDL}"      >> ${MC_CONFIG}/premake.${MC_OS}
    echo "        OINC=${OINC}"      >> ${MC_CONFIG}/premake.${MC_OS}
    echo "        OLIB=${OLIB}"      >> ${MC_CONFIG}/premake.${MC_OS}
    echo "        OLDL=${OLDL}"      >> ${MC_CONFIG}/premake.${MC_OS}
    echo "      ARCLIB=${ARCLIB}"    >> ${MC_CONFIG}/premake.${MC_OS}
    echo "      RANLIB=${RANLIB}"    >> ${MC_CONFIG}/premake.${MC_OS}
    echo "          RM=${RM}"        >> ${MC_CONFIG}/premake.${MC_OS}
    echo "       BKDEP=${BKDEP}"     >> ${MC_CONFIG}/premake.${MC_OS}
    echo "       MKDEP=${MKDEP}"     >> ${MC_CONFIG}/premake.${MC_OS}
    echo ""                          >> ${MC_CONFIG}/premake.${MC_OS}

    # Generate the postmake.${MC_OS} file
    echo ""                              > ${MC_CONFIG}/postmake.${MC_OS}
    echo "dep:"                         >> ${MC_CONFIG}/postmake.${MC_OS}
    echo "	\${MKDEP} Makefile -Y \${CPPFLAGS} -I\${MC_INC} \${SRC}" \
                                        >> ${MC_CONFIG}/postmake.${MC_OS}
    echo "brkdep:"                      >> ${MC_CONFIG}/postmake.${MC_OS}
    echo "	\${BKDEP} Makefile"         >> ${MC_CONFIG}/postmake.${MC_OS}
    echo "clean:"                       >> ${MC_CONFIG}/postmake.${MC_OS}
    echo "	\${RM} \${CLEANABLE}"       >> ${MC_CONFIG}/postmake.${MC_OS}
    echo ""                             >> ${MC_CONFIG}/postmake.${MC_OS}
    echo "# DO NOT DELETE THIS LINE -- make depend depends on it." \
                                        >> ${MC_CONFIG}/postmake.${MC_OS}
    echo ""                             >> ${MC_CONFIG}/postmake.${MC_OS}

    # Make the MC_LIB subdirectory if it does not yet exist
    if [ ! -d "${MC_LIB}" ]; then
        mkdir ${MC_LIB}
    fi
}

##############################################################################
# Routine: chkConfig()
# Purpose: Check to see if the package has been configured by genConfig().
#          We key on existence of the MC_LIB directory (created by genConfig).
#          The first argument is the option the user wants to execute.
##############################################################################
chkConfig() {
    CC_ARG1="$1"
    if [ ! -d "${MC_LIB}" ]; then
        echo "${PR} ERROR: use <config> (at least once) before <${CC_ARG1}>."
        mkExit "1" "chkConfig"
    fi
}

##############################################################################
# Routine: killMakefile()
# Purpose: Kill an arch-dependent subdirectory (containing a makefile) in 
#          directory specified by the first argument, where the name of the
#          arch-dependent subdirectory to kill is given by the second argument.
#          If no agument given, remove all the arch-dependent subdirectories.
##############################################################################
killMakefile() {
    KMF_DIR="$1"
    KMF_OS="$2"
    echo "${PR} Removing <${KMF_OS}> arch files and mk script in <${KMF_DIR}>."
    cd ${MC_ROOT}/${KMF_DIR}
    if [ "${KMF_OS}" = "ALL" ]; then
        rm -rf arch ; rm -f mk mk.*
    else
        rm -rf arch/${KMF_OS} ; rm -f mk.${KMF_OS}
    fi
}

##############################################################################
# Routine: makeMakefile()
# Purpose: Generate a makefile in directory specified by the first argument.
#          We also leave behind a useful script for calling make.
##############################################################################
makeMakefile() {
    MMF_ARG="$1"
    echo "${PR} Generating Makefile for <${MMF_ARG}/arch/${MC_OS}>"

    # Move to the directory
    cd ${MC_ROOT}/${MMF_ARG}

    # Leave behind a make script and a local version of ${MK_NAME}.
    if [ "${MC_CWD}" = "${MC_ROOT}" ]; then

        # Leave behind a make script called "mk.${MC_OS}"
        echo "#! /bin/sh"                      > mk.${MC_OS}
        echo "cd arch/${MC_OS} ; ${MAKE} \$@" >> mk.${MC_OS}
        chmod u+x mk.${MC_OS}

        # Leave behind local version of ${MK_NAME}
        # (With a hard-wired MC_ROOT and a verbose make).
        cat ${MC_CWD}/${MK_NAME} | ${AWK} " \
                \$1 ~  /^ *MC_ROOT=/   { print \"MC_ROOT=${MC_ROOT}\" } \
                \$1 ~  /^ *MK_MAKARG=/ { print \"MK_MAKARG=\${PARAMAKE}\" } \
                \$1 !~ /^ *MC_ROOT=/ && \$1 !~ /^ *MK_MAKARG=/ { print \$0 } \
            " > ${MK_NAME}
        chmod u+x ${MK_NAME}
    fi

    # Get the list of source and header files while we are here
    FILES=`ls -1 *.cc *.c *.h *.f 2>/dev/null \
         | ${SED} -e "s./..g" | ${SED} -e "s.CVS..g"`;

    # Make the "arch"itecture subdirectory if it does not yet exist
    if [ ! -d "arch" ]; then
        mkdir arch
    fi
    cd arch

    # Remove MS_OS subdirectory and all contents, then recreate
    rm -rf ${MC_OS}
    mkdir ${MC_OS}
    cd ${MC_OS}

    # Create the symbolic links to the source and headers
    for file in ${FILES}; do
        ln -s ../../${file} ${file}
    done

    # Generate the makefile
    cat ${MC_CONFIG}/premake.${MC_OS} > Makefile
    cat ../../Makefile.mk | ${AWK} "!/^ *#+/ { print \$0 }" >> Makefile
    cat ${MC_CONFIG}/postmake.${MC_OS} >> Makefile
}

##############################################################################
# Routine: callMake()
# Purpose: Do a make in the directory specified by the first argument.
#          The second argument gives the optional target for the make.
##############################################################################
callMake() {
    ML_DIR="$1"
    ML_TGT="$2"
    echo "${PR} Handling directory <${ML_DIR}/arch/${MC_OS}>"
    cd ${MC_ROOT}/${ML_DIR}
    ./mk.${MC_OS} ${MK_MAKARG} ${ML_TGT}
}

##############################################################################
# Routine: doAll()
# Purpose: Do something in all MK_LIBS directories.
#          The first argument specifies the something to do.
#          The second argument gives the argument for the something.
##############################################################################
doAll() {
    DA_CMD="$1"
    DA_ARG="$2"
    getMkLibs
    for lib in ${MK_LIBS}; do
        "make_${lib}" "${DA_CMD}" "${DA_ARG}"
    done
}

##############################################################################
# Routine: mkExit()
# Purpose: Exit with some error condition.
#          The first argument has the error code.
#          The second argument is the name of the function calling mkExit.
##############################################################################
mkExit() {
    MKE_ERR="$1"
    MKE_FUN="$2"
    # echo "${PR} Exiting (called from ${MKE_FUN}) with error "${MKE_ERR})."
    exit
}

##############################################################################
# Initialization
##############################################################################

# Grab the arguments
MK_CMD="$1"
MK_OS="$2"

# MC I/O prompt
MK_NAME=`echo "$0" | ${SED} -e "s:./::g"`;
if [ $# -eq 0 ]; then
    PR="[${MK_NAME}]:"
else
    PR="[${MK_NAME} $@]:"
fi

# Define ROOT and CONFIG Paths
MC_ROOT=`${PWD}`
MC_TOOLS="${MC_ROOT}/cnf/tools"
MC_CONFIG="${MC_ROOT}/cnf"
MC_BIN="${MC_ROOT}/work/bin"
MC_INC="${MC_ROOT}/inc"

# Deal with the current working directory and the subroot piece
# The subroot piece satisfies:  MC_CWD=MC_ROOT/MC_SUBROOT
MC_CWD=`${PWD}`
MC_SUBROOT=`echo "" | \
   ${AWK} "{ printf(\"%s\",substr(\"${MC_CWD}\",length(\"${MC_ROOT}\")+2)) }"`

# Identify the library name in case we are in a subdirectory
MC_LIBNAME=""
getMkLibs
for lib in ${MK_LIBS}; do
   VAL=`echo ""|${AWK} "{printf(\"%s\",index(\"${MC_SUBROOT}\",\"${lib}\"))}"`
   if [ ${VAL} -gt 0 ]; then
       MC_LIBNAME="${lib}"
   fi
done

# Some minmal checking for correctness of the paths
if [ ! "${MC_CWD}" = "${MC_ROOT}" ]; then
    MK_ERROR=0

    # Make sure the three paths agree with each other
    if [ ! "${MC_CWD}" = "${MC_ROOT}/${MC_SUBROOT}" ]; then
        MK_ERROR=1
    fi

    # Make sure we have a proper library name if we are in a subdirectory
    if [ "${MC_LIBNAME}" = "" ]; then
        MK_ERROR=1
    fi

    # Do some helpful debug I/O if necessary
    if [ ${MK_ERROR} -gt 0 ]; then
        echo "${PR} There is some problem with the path settings."
        echo "${PR}     MC_CWD=<${MC_CWD}>"
        echo "${PR}    MC_ROOT=<${MC_ROOT}>"
        echo "${PR} MC_SUBROOT=<${MC_SUBROOT}>"
        echo "${PR} MC_LIBNAME=<${MC_LIBNAME}>"
        mkExit "${MK_ERROR}" "main"
    fi
fi

##############################################################################
# Do it
##############################################################################

# Decode the first argument
case ${MK_CMD} in
    go) # <config/clean/dep/build> all at once
        echo "${PR} Doing config->clean->dep->build."
        getConfig ${MK_OS}
        ./${MK_NAME} config ${MK_OS}
        ./${MK_NAME} clean  ${MK_OS}
        ./${MK_NAME} dep    ${MK_OS}
        ./${MK_NAME} build  ${MK_OS} ;;

    config) # <auto|manual configuration>
        echo "${PR} Doing a configuration."
        getConfig ${MK_OS}
        genConfig
        if [ "${MC_SUBROOT}" = "" ]; then
            doAll "makeMakefile"
        else
            "make_${MC_LIBNAME}" "makeMakefile"
        fi ;;

    clean) # <clean up object files and binaries>
        echo "${PR} Doing a make clean."
        getConfig ${MK_OS}
        chkConfig "clean"
        if [ "${MC_SUBROOT}" = "" ]; then
            doAll "callMake" "clean"
        else
            "make_${MC_LIBNAME}" "callMake" "clean"
        fi ;;

    dep) # <build all dependencies in the makefiles>
        echo "${PR} Doing a make depend."
        getConfig ${MK_OS}
        chkConfig "dep"
        if [ "${MC_SUBROOT}" = "" ]; then
            doAll "callMake" "dep"
        else
            "make_${MC_LIBNAME}" "callMake" "dep"
        fi ;;

    build) # <build the libraries>
        echo "${PR} Doing package build."
        getConfig ${MK_OS}
        chkConfig "build"
        if [ "${MC_SUBROOT}" = "" ]; then
            doAll "callMake" "default"
        else
            "make_${MC_LIBNAME}" "callMake" "default"
        fi ;;

    brkdep) # <remove dependencies in the makefiles>
        echo "${PR} Doing a break depend."
        getConfig ${MK_OS}
        chkConfig "brkdep"
        if [ "${MC_SUBROOT}" = "" ]; then
            doAll "callMake" "brkdep"
        else
            "make_${MC_LIBNAME}" "callMake" "brkdep"
        fi ;;

    rclean) # <clean up everything>

        # Allow rclean only in the root directory.
        if [ "${MC_SUBROOT}" = "" ]; then
            echo "${PR} Doing a make REAL clean."

            # Clean out all platform build directories and support files.
            if [ "${MK_OS}" = "all" ]; then

                echo "${PR} Removing <ALL> arch files and mk scripts."
                doAll "killMakefile" "ALL"

                echo "${PR} Removing <ALL> archive libraries."
                cd ${MC_ROOT}/lib
                THELIBS=`ls -1 | ${SED} -e "s./..g" | ${SED} -e "s.CVS..g"`;
                for lib in ${THELIBS}; do
                    rm -rf ${lib}
                done

                echo "${PR} Removing <ALL> premake and postmake files."
                cd ${MC_CONFIG} ; rm -f premake.* postmake.*

                echo "${PR} Removing <ALL> executables."
                cd ${MC_BIN}    ; rm -f core   2>/dev/null
                cd ${MC_BIN}    ; rm -f   go.* 2>/dev/null

            # One particular platform specified, so clean only that platform.
            else

                # Get the actuall platform OS to cleanup.
                getConfig ${MK_OS}

                echo "${PR} Removing <${MC_OS}> arch files and mk scripts."
                doAll "killMakefile" "${MC_OS}"

                echo "${PR} Removing <${MC_OS}> archive libraries."
                cd ${MC_ROOT}/lib ; rm -rf ${MC_OS}

                echo "${PR} Removing <${MC_OS}> premake and postmake files."
                cd ${MC_CONFIG} ; rm -f premake.${MC_OS} postmake.${MC_OS}

                echo "${PR} Removing <${MC_OS}> executables."
                cd ${MC_BIN}    ; rm -f core          2>/dev/null
                cd ${MC_BIN}    ; rm -f   go.${MC_OS} 2>/dev/null
            fi

        # Do not allow rclean in the subdirectories.
        else
            echo "${PR} You can do <rclean> only from the root directory."
        fi ;;

    tgz) # <build a gzipped tar archive of the package>

        # Allow tgz only in the root directory.
        if [ "${MC_SUBROOT}" = "" ]; then

            ./${MK_NAME} rclean all
            echo "${PR} Forming gzipped tar archive."
            cd ${MC_ROOT}/../
            ${TOUCH} mc.tgz
            mv -f mc.tgz mc.tgz_OLD
            ${TAR} cf mc.tar mc
            ${GZIP} -v mc.tar
            mv mc.tar.gz mc.tgz

        # Do not allow tgz in the subdirectories.
        else
            echo "${PR} You can do <tgz> only from the root directory."
        fi ;;

    info) # <print more information about usage>
        printInfo ;;

    *) # <print a short usage menu>
        printMenu ;;
esac

mkExit "0" "main"