build_visit_BGQ 37.3 KB
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#!/bin/bash

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VISIT_VERSION="2.10.0"
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################################################################################
## DEFAULT VALUES FOR VARIABLES
################################################################################

# Global variables
ARCH=linux-ppc64_gcc-4.4
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PREFIXARCH=linux-ppc64-BGQ
PREFIX="$PWD/$PREFIXARCH"
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BG_CC=bgxlc_r
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BG_C_OPT_FLAGS=""
BG_CXX_OPT_FLAGS=""
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BG_CXX=bgxlC_r
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# Compiler used for Mesa.
BG_GNU_CC=powerpc64-bgq-linux-gcc
BG_GNU_CXX=powerpc64-bgq-linux-g++

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BG_MPI_GNU_CC=mpicc # not used
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BG_MPI_GNU_CXX=mpicxx

BG_MPI_CC=mpixlc
BG_MPI_C_OPT_FLAGS=""
BG_MPI_CXX_OPT_FLAGS=""
BG_MPI_CXX=mpixlC

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BUILD_MODE="Release"
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CC=gcc
C_OPT_FLAGS=""
CXX=g++
CXX_OPT_FLAGS=""
EXTRA_ARGS=""
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GROUP="bdiv"
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INSTALLATION_BUILD_DIR="builds_static"
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IO_PACKAGES="--szip --hdf5 --silo"
VISIT_SELECTED_DATABASE_PLUGINS="BOV;Cale;CaleHDF5;Curve2D;EnSight;Miranda;PDB;PlainText;SAMRAI;Silo;VTK"
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MAKE=make
MAKE_OPT_FLAGS=""
NO_VISIT=""
DO_SVN=""
DO_SVN_ANON=""
SVN=""
TAR=tar
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THIRD_PARTY_PATH="`pwd`/thirdparty_static"
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TARBALL="--tarball visit${VISIT_VERSION}.tar.gz"
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export CMAKE_VERSION=3.0.2
export CMAKE_SHORT_VERSION=3.0
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export MESA_FILE=${MESA_FILE:-"MesaLib-7.8.2.tar.gz"}
export MESA_VERSION=${MESA_VERSION:-"7.8.2"}
export MESA_BUILD_DIR=${MESA_BUILD_DIR:-"Mesa-7.8.2"}
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export MESA_URL="http://visit.ilight.com/svn/visit/trunk/third_party"
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export ZLIB_FILE=${ZLIB_FILE:-"zlib-1.2.8.tar.gz"}
export ZLIB_VERSION=${ZLIB_VERSION:-"1.2.8"}
export ZLIB_BUILD_DIR=${ZLIB_BUILD_DIR:-"zlib-1.2.8"}
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export ZLIB_URL="http://zlib.net/"

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export VTK_VERSION="6.1.0"
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################################################################################
## CODE BORROWED FROM build_visit
################################################################################

#First step download the support directory from svn repository..
bv_PATH=`dirname $0`

bv_PREFIX=$bv_PATH/bv_support/

function configure_support_files
{
    if [ ! -d $bv_PREFIX ]; then 
        #check current directory
        bv_PREFIX=$PWD/bv_support/

        if [ ! -d $bv_PREFIX ]; then 

            for choice in `echo "curl wget svn"`
            do
                echo "Trying to fetch support files using: $choice"

                #if choice successful then exit, else try next..
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                webaddr="http://visit.ilight.com/svn/visit/trunk/src/svn_bin/bv_support/"
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                tmp_choice=`which $choice`

                if [ $? != 0 ]; then
                    continue
                fi
                if [[ $choice == "curl" ]]; then
                    tmp_curl=`curl -s ${webaddr}/ | grep 'sh\|xml' | grep li|sed s/.*bv_/bv_/g | sed -e s/\.sh.*/\.sh/g | sed -e s/.*href\=\"//g;`

                    if [ $? != 0 ]; then 
                        continue
                    fi

                    mkdir -p bv_support_tmp
                    is_successful=1
                    #fetch each file..
                    for curl_files in `echo $tmp_curl`
                    do 
                        curl -s ${webaddr}/${curl_files} -o bv_support_tmp/$curl_files 
                        if [ $? != 0 ]; then
                            is_successful=0
                            break
                        fi
                    done

                    #if not successful cleanup and try next option..
                    if [ $is_successful == 0 ]; then 
                        rm -fR bv_support_tmp
                    else
                        mv bv_support_tmp bv_support
                    fi
                elif [[ $choice == "wget" ]]; then
                    wget -r -nH --cut-dirs=5 --no-parent --reject="index.html" -q ${webaddr}
                else
                    svn co ${webaddr} bv_support
                fi

                if [ ! -d $bv_PREFIX ]; then
                    echo "$choice failed to retrieve support files"
                else
                    echo "Success. downloaded support, continuing"
                    break
                fi
            done
        fi

        if [ ! -d $bv_PREFIX ]; then
            echo "Failed to detect or fetch support files, please contact visit-users mailing list with error. Quitting..."
            exit 2
        fi
    fi
}

#configure the support files if needed..
configure_support_files

#import initialize and run functions..
. $bv_PREFIX/bv_main.sh

#import helper functions..
. $bv_PREFIX/helper_funcs.sh

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function banner
{
    echo "===================================================================================="
    echo "$1"
    echo "===================================================================================="

    return 0
}

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################################################################################
## build_mesa_BGQ
################################################################################

function build_mesa_BGQ
{
    PF=$THIRD_PARTY_PATH/mesa/$MESA_VERSION/${ARCH}_BGQ

    #
    # Test whether Mesa has already been installed.
    #
    if test -d $PF ; then
        return 0
    fi

    #
    # Download file if needed
    #
    if ! test -e $MESA_FILE ; then
        download_file $MESA_FILE $MESA_URL
        if [[ $? == 1 ]] ; then
            warn "Unable to download Mesa sources $MESA_FILE. Giving Up!"
            return 1
        fi
    fi

    #
    # prepare build dir
    #
    prepare_build_dir $MESA_BUILD_DIR $MESA_FILE
    untarred_mesa=$?

    if [[ $untarred_mesa == -1 ]] ; then
        warn "Unable to prepare Mesa build directory. Giving Up!"
        return 1
    fi

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    if test -e $MESA_BUILD_DIR ; then
        echo "Moving $MESA_BUILD_DIR into ${INSTALLATION_BUILD_DIR}_BGQ"
        if test -e ${INSTALLATION_BUILD_DIR}_BGQ/$MESA_BUILD_DIR ; then
            rm -rf ${INSTALLATION_BUILD_DIR}_BGQ/$MESA_BUILD_DIR
        fi
        mv $MESA_BUILD_DIR ${INSTALLATION_BUILD_DIR}_BGQ/$MESA_BUILD_DIR
        cd ${INSTALLATION_BUILD_DIR}_BGQ
    fi

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    #
    # Build bluegene-visit-osmesa config.
    #
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    banner "Building Mesa (Compute Node)"
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    cd $MESA_BUILD_DIR || error "Couldn't cd to mesa build dir."
    if test -e configs/bluegene-visit-osmesa ; then
        rm -f configs/bluegene-visit-osmesa
    fi
    cat << \EOF > configs/bluegene-visit-osmesa
include $(TOP)/configs/default
CONFIG_NAME = bluegene-visit-osmesa
# Compiler and flags
APP_CC = gcc
APP_CXX = g++
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CFLAGS = -O3 -DNDEBUG -pedantic -D_POSIX_SOURCE -D_POSIX_C_SOURCE=199309L -D_SVID_SOURCE -D_BSD_SOURCE
CXXFLAGS = -O3 -DNDEBUG -pedantic -D_POSIX_SOURCE -D_POSIX_C_SOURCE=199309L -D_SVID_SOURCE -D_BSD_SOURCE
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MKLIB_OPTIONS = -static
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GL_LIB_NAME = libUsedToBeCalledGL.a
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GLU_LIB_NAME = libGLU.a
GLUT_LIB_NAME = libglut.a
GLW_LIB_NAME = libGLw.a
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OSMESA_LIB = OSMesa
OSMESA_LIB_NAME = libOSMesa.a
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# Directories
SRC_DIRS = glsl mesa glu
DRIVER_DIRS = osmesa
PROGRAM_DIRS = osdemos
# Dependencies
GL_LIB_DEPS =
OSMESA_LIB_DEPS = -lm
GLU_LIB_DEPS = -L$(TOP)/$(LIB_DIR) -l$(OSMESA_LIB)
GLUT_LIB_DEPS =
GLW_LIB_DEPS =
APP_LIB_DEPS = -lOSMesa -lGLU -lm
EOF

    # Append the bluegene compilers and install location.
    echo "CC=$BG_GNU_CC" >> configs/bluegene-visit-osmesa
    echo "CXX=$BG_GNU_CXX" >> configs/bluegene-visit-osmesa
    echo "INSTALL_DIR=$PF" >> configs/bluegene-visit-osmesa

    sed "s/bluegene-osmesa/bluegene-osmesa bluegene-visit-osmesa/g" Makefile > Makefile.visit
    mv Makefile.visit Makefile

    cat configs/bluegene-visit-osmesa

    #
    # Build Mesa.
    #
    info "Building OSMesa as libGL replacement ..."
    ${MAKE} bluegene-visit-osmesa ${MAKE_OPT_FLAGS}
    if [[ $? != 0 ]] ; then
        warn "Mesa: 'make bluegene-visit-osmesa' failed.  Giving up"
        return 1
    fi
    info "Installing OSMesa as libGL replacement ..."
    ${MAKE} install
    if [[ $? != 0 ]] ; then
        warn "Mesa: 'make install' failed.  Giving up"
        return 1
    fi

    # Some versions of Mesa erroneously install GLEW as well.  We need to make
    # sure we get VisIt's GLEW when we include it, so remove the ones Mesa
    # installs.
    rm -f $PF/include/GL/gl*ew.h

    if [[ $? != 0 ]] ; then
        warn "Mesa build failed.  Giving up"
        return 1
    fi

    chmod -R ug+w,a+rX "$THIRD_PARTY_PATH/mesa"
    chgrp -R ${GROUP} "$THIRD_PARTY_PATH/mesa"

    info "Done with Mesa"
    return 0
}

function write_platform_file
{
    # Remove the platform file if it exists.
    if test -e $1 ; then
        rm -f $1
    fi

    # Write boilerplate platform file.
    cat << \EOF > $1
# From BlueGeneP-base.cmake

#
# For BGQ builds, we're cross compiling, but we don't want to re-root things
# (e.g. with CMAKE_FIND_ROOT_PATH) because users may have libraries anywhere on
# the shared filesystems, and this may lie outside the root.  Instead, we set the
# system directories so that the various system BGQ CNK library locations are
# searched first.  This is not the clearest thing in the world, given IBM's driver
# layout, but this should cover all the standard ones.
#
set(CMAKE_SYSTEM_LIBRARY_PATH
  /bgsys/drivers/ppcfloor/comm/default/lib                # default comm layer (used by mpi compiler wrappers)
  /bgsys/drivers/ppcfloor/comm/sys/lib                    # DCMF, other lower-level comm libraries
  /bgsys/drivers/ppcfloor/runtime/SPI                     # other low-level stuff
  /bgsys/drivers/ppcfloor/gnu-linux/lib                   # CNK python installation directory
  /bgsys/drivers/ppcfloor/gnu-linux/powerpc-BGQ-linux/lib # CNK Linux image -- standard runtime libs, pthread, etc.
)

#
# This adds directories that find commands should specifically ignore for cross compiles.
# Most of these directories are the includeand lib directories for the frontend on BG/P systems.
# Not ignoring these can cause things like FindX11 to find a frontend PPC version mistakenly.
# We use this on BG instead of re-rooting because backend libraries are typically strewn about
# the filesystem, and we can't re-root ALL backend libraries to a single place.
#
set(CMAKE_SYSTEM_IGNORE_PATH
  /lib             /lib64             /include
  /usr/lib         /usr/lib64         /usr/include
  /usr/local/lib   /usr/local/lib64   /usr/local/include
  /usr/X11/lib     /usr/X11/lib64     /usr/X11/include
  /usr/lib/X11     /usr/lib64/X11     /usr/include/X11
  /usr/X11R6/lib   /usr/X11R6/lib64   /usr/X11R6/include
  /usr/X11R7/lib   /usr/X11R7/lib64   /usr/X11R7/include
)

#
# Indicate that this is a unix-like system
#
set(UNIX 1)

#
# Library prefixes, suffixes, extra libs.
#
set(CMAKE_LINK_LIBRARY_SUFFIX "")
set(CMAKE_STATIC_LIBRARY_PREFIX "lib")     # lib
set(CMAKE_STATIC_LIBRARY_SUFFIX ".a")      # .a

set(CMAKE_SHARED_LIBRARY_PREFIX "lib")     # lib
set(CMAKE_SHARED_LIBRARY_SUFFIX ".so")     # .so
set(CMAKE_EXECUTABLE_SUFFIX "")            # .exe
set(CMAKE_DL_LIBS "dl")

#
# This macro needs to be called for dynamic library support.  Unfortunately on BGQ,
# We can't support both static and dynamic links in the same platform file.  The
# dynamic link platform file needs to call this explicitly to set up dynamic linking.
#
macro(__BlueGeneP_set_dynamic_flags compiler_id lang)
  if (${compiler_id} STREQUAL XL)
    # Flags for XL compilers if we explicitly detected XL
    set(CMAKE_${lang}_COMPILE_OPTIONS_PIC            "-qpic")
    set(CMAKE_${lang}_COMPILE_OPTIONS_PIE            "-qpie")
    set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS           "-qpic")
    set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS    "-qmkshrobj -qnostaticlink")
    set(BGQ_${lang}_DYNAMIC_EXE_FLAGS                "-qnostaticlink -qnostaticlink=libgcc")
  else()
    # Assume flags for GNU compilers (if the ID is GNU *or* anything else).
    set(CMAKE_${lang}_COMPILE_OPTIONS_PIC            "-fPIC")
    set(CMAKE_${lang}_COMPILE_OPTIONS_PIE            "-fPIE")
    set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS           "-fPIC")
    set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS    "-shared")
    set(BGQ_${lang}_DYNAMIC_EXE_FLAGS                "-dynamic")
  endif()

  # Both toolchains use the GNU linker on BG/P, so these options are shared.
  set(CMAKE_SHARED_LIBRARY_RUNTIME_${lang}_FLAG      "-Wl,-rpath,")
  set(CMAKE_SHARED_LIBRARY_RPATH_LINK_${lang}_FLAG   "-Wl,-rpath-link,")
  set(CMAKE_SHARED_LIBRARY_SONAME_${lang}_FLAG       "-Wl,-soname,")
  set(CMAKE_EXE_EXPORTS_${lang}_FLAG                 "-Wl,--export-dynamic")
  set(CMAKE_SHARED_LIBRARY_LINK_${lang}_FLAGS        "")  # +s, flag for exe link to use shared lib
  set(CMAKE_SHARED_LIBRARY_RUNTIME_${lang}_FLAG_SEP  ":") # : or empty

  set(BGQ_${lang}_DEFAULT_EXE_FLAGS
    "<FLAGS> <CMAKE_${lang}_LINK_FLAGS> <LINK_FLAGS> <OBJECTS>  -o <TARGET> <LINK_LIBRARIES>")
  set(CMAKE_${lang}_LINK_EXECUTABLE
    "<CMAKE_${lang}_COMPILER> -Wl,-relax ${BGQ_${lang}_DYNAMIC_EXE_FLAGS} ${BGQ_${lang}_DEFAULT_EXE_FLAGS}")
endmacro()

#
# This macro needs to be called for static builds.  Right now it just adds -Wl,-relax
# to the link line.
#
macro(__BlueGeneQ_set_static_flags compiler_id lang)
  set(BGQ_${lang}_DEFAULT_EXE_FLAGS
    "<FLAGS> <CMAKE_${lang}_LINK_FLAGS> <LINK_FLAGS> <OBJECTS>  -o <TARGET> <LINK_LIBRARIES>")
  set(CMAKE_${lang}_LINK_EXECUTABLE
    "<CMAKE_${lang}_COMPILER> -Wl,-relax ${BGQ_${lang}_DEFAULT_EXE_FLAGS}")
endmacro()

# From BlueGeneP-static.cmake, which has a broken include
set_property(GLOBAL PROPERTY TARGET_SUPPORTS_SHARED_LIBS FALSE)
set(CMAKE_FIND_LIBRARY_PREFIXES "lib")
set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")

# Use the XL compilers
__BlueGeneQ_set_static_flags(XL CXX)
EOF
  
    return 0
}

#
# Build cmake with the regular compiler. Make a link to the regular version
# so we can have a "BGQ" version too.
#
function build_cmake
{
    if test -d $THIRD_PARTY_PATH/cmake/$CMAKE_VERSION/${ARCH}_BGQ ; then
        info "CMake is already installed."
        return 0
    fi

    MAKEARGS=""
    if test -n "$MAKE_OPT_FLAGS" ; then
        MAKEARGS="--makeflags $MAKE_OPT_FLAGS"
    fi
    CFLAGSARGS=""
    if test -n "$C_OPT_FLAGS" ; then
        CFLAGSARGS="--cflags \"$C_OPT_FLAGS\""
    fi
    CXXFLAGSARGS=""
    if test -n "$CXX_OPT_FLAGS" ; then
        CXXFLAGSARGS="--cxxflags \"$CXX_OPT_FLAGS\""
    fi

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    banner "Building CMake"
    env BUILD_VISIT_BGQ="yes" $bv_PATH/build_visit \
        --version ${VISIT_VERSION} \
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        --console --static --no-visit $SVN $TARBALL\
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        --no-thirdparty --cmake\
        --log-file building_cmake.txt \
        --arch "${ARCH}" \
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        --prefix "${PREFIX}" \
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        --build-mode $BUILD_MODE \
        --thirdparty-path $THIRD_PARTY_PATH \
        --installation-build-dir "${INSTALLATION_BUILD_DIR}" \
        --cc $CC $CFLAGSARGS \
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        --cxx $CXX $CXXFLAGSARGS $MAKEARGS \
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        --group $GROUP || error "Cannot build cmake for login node."
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   # Create a symlink to make a "BGQ" version of the login node cmake.
   STARTDIR=`pwd`
   cd $THIRD_PARTY_PATH/cmake/$CMAKE_VERSION
   if ! test -e "${ARCH}_BGQ" ; then
       ln -s $ARCH "${ARCH}_BGQ"
   fi
   cd $STARTDIR

   # The BlueGeneP-static-XL-CXX platform files are hosed in cmake's install.
   # Overwrite.
   TOOLCHAIN="$THIRD_PARTY_PATH/cmake/$CMAKE_VERSION/$ARCH/share/cmake-$CMAKE_SHORT_VERSION/Modules/Platform/BlueGeneP-static-XL-CXX.cmake"
   write_platform_file "$TOOLCHAIN"

   cd $STARTDIR

   return 0
}

function build_zlib_BGQ
{
    MAKEARGS=""
    if test -n "$MAKE_OPT_FLAGS" ; then
        MAKEARGS="--makeflags $MAKE_OPT_FLAGS"
    fi
    CFLAGSARGS=""
    if test -n "$BG_C_OPT_FLAGS" ; then
        CFLAGSARGS="--cflag $BG_C_OPT_FLAGS"
    fi
    CXXFLAGSARGS=""
    if test -n "$BG_CXX_OPT_FLAGS" ; then
        CXXFLAGSARGS="--cxxflag $BG_CXX_OPT_FLAGS"
    fi

    # Build some packages that require GNU compilers.
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    banner "Building zlib (Compute Node)"
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    $bv_PATH/build_visit \
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        --version ${VISIT_VERSION} \
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        --console --static --no-visit $SVN $TARBALL --engine-only \
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        --log-file compute_node.txt \
        --arch "${ARCH}_BGQ" \
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        --prefix "${PREFIX}" \
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        --build-mode $BUILD_MODE \
        --thirdparty-path $THIRD_PARTY_PATH \
        --installation-build-dir "${INSTALLATION_BUILD_DIR}_BGQ" \
        --cc $BG_CC $CFLAGSARGS \
        --cxx $BG_CXX $CXXFLAGSARGS $MAKEARGS \
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        --no-thirdparty --zlib \
        --group $GROUP
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    if [[ $? != 0 ]] ; then
        warn "ZLIB build failed.  Giving up"
        return 1
    fi

    return 0
}

function build_vtk_BGQ
{
    # Come up with some extra arguments for VTK's cmake line.
    MESADIR="$THIRD_PARTY_PATH/mesa/$MESA_VERSION/${ARCH}_BGQ"
    ZLIBDIR="$THIRD_PARTY_PATH/zlib/$ZLIB_VERSION/${ARCH}_BGQ"
    VTKDIR="$THIRD_PARTY_PATH/vtk/$VTK_VERSION/${ARCH}_BGQ"
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    VTK_SRC_DIR="${INSTALLATION_BUILD_DIR}_BGQ/VTK-${VTK_VERSION}"
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    VTK_BUILD_DIR="${INSTALLATION_BUILD_DIR}_BGQ/VTK-${VTK_VERSION}-build"

    # If the VTK installation directory already exists, return.
    if test -d $VTKDIR ; then
        info "VTK is already installed."
        return 0
    fi

    MAKEARGS=""
    if test -n "$MAKE_OPT_FLAGS" ; then
        MAKEARGS="--makeflags $MAKE_OPT_FLAGS"
    fi
    CFLAGSARGS=""
    if test -n "$BG_C_OPT_FLAGS" ; then
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        CFLAGSARGS="--cflags $BG_C_OPT_FLAGS"
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    fi
    CXXFLAGSARGS=""
    if test -n "$BG_CXX_OPT_FLAGS" ; then
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        CXXFLAGSARGS="--cxxflags $BG_CXX_OPT_FLAGS"
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    fi

    # Form extra arguments that we'll pass to cmake for VTK.
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    vopts="-DCMAKE_CROSSCOMPILING:BOOL=ON -DVTK_OPENGL_HAS_OSMESA:BOOL=ON"
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    vopts="${vopts} -DOPENGL_INCLUDE_DIR:PATH=$MESADIR/include"
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    vopts="${vopts} -DOPENGL_gl_LIBRARY:PATH=$MESADIR/lib/libOSMesa.a"
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    vopts="${vopts} -DOPENGL_glu_LIBRARY:PATH=$MESADIR/lib/libGLU.a"
    vopts="${vopts} -DVTK_USE_X:BOOL=OFF"
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    vopts="${vopts} -DOSMESA_LIBRARY:FILEPATH=$MESADIR/lib/libOSMesa.a"
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    vopts="${vopts} -DOSMESA_INCLUDE_DIR:FILEPATH=$MESADIR/include"

    vopts="${vopts} -DVTK_USE_SYSTEM_ZLIB:BOOL=ON"
    vopts="${vopts} -DZLIB_INCLUDE_DIR:PATH=$ZLIBDIR/include"
    vopts="${vopts} -DZLIB_LIBRARY:FILEPATH=$ZLIBDIR/lib/libz.a"

    vopts="${vopts} -DCMAKE_REQUIRE_LARGE_FILE_SUPPORT:INTERNAL=1"
    vopts="${vopts} -DVTK_TYPE_CHAR_IS_SIGNED:INTERNAL=1"
    vopts="${vopts} -DVTK_ANSI_STREAM_EOF_RESULT:INTERNAL=0"
    vopts="${vopts} -DKWSYS_LFS_WORKS:INTERNAL=0"
    vopts="${vopts} -DKWSYS_CHAR_IS_SIGNED:INTERNAL=0"

    # Delete the old cache file if there is one.
    if test -e $VTK_BUILD_DIR/CMakeCache.txt ; then
        rm -f $VTK_BUILD_DIR/CMakeCache.txt
    fi

    # Call build_visit.
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    banner "Building VTK (Compute Node)"
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    env VTK_EXTRA_OPTIONS="${vopts}" C_COMPILER=$BG_CC BUILD_VISIT_BGQ="yes" $bv_PATH/build_visit \
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        --version ${VISIT_VERSION} \
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        --console --static --no-visit $SVN $TARBALL --engine-only \
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        --no-thirdparty --cmake --vtk \
        --log-file compute_node.txt \
        --arch "${ARCH}_BGQ" \
        --build-mode $BUILD_MODE \
        --thirdparty-path $THIRD_PARTY_PATH \
        --installation-build-dir "${INSTALLATION_BUILD_DIR}_BGQ" \
        --cc $BG_CC $CFLAGSARGS \
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        --cxx $BG_CXX $CXXFLAGSARGS $MAKEARGS \
        --group $GROUP

    rm -rf $VTK_SRC_DIR
    rm -rf $VTK_BUILD_DIR
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    return $?
}

function build_icet_BGQ
{
    MAKEARGS=""
    if test -n "$MAKE_OPT_FLAGS" ; then
        MAKEARGS="--makeflags $MAKE_OPT_FLAGS"
    fi
    CFLAGSARGS=""
    if test -n "$BG_C_OPT_FLAGS" ; then
        CFLAGSARGS="--cflag $BG_C_OPT_FLAGS"
    fi
    CXXFLAGSARGS=""
    if test -n "$BG_CXX_OPT_FLAGS" ; then
        CXXFLAGSARGS="--cxxflag $BG_CXX_OPT_FLAGS"
    fi

    # Call build_visit just to build Ice-T. Use the gnu compilers to build
    # it but use the XL/MPI compilers to detect MPI.
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    banner "Building Ice-T (Compute Node)"
    env PAR_COMPILER=$BG_MPI_CC C_COMPILER=$BG_CC $bv_PATH/build_visit \
        --version ${VISIT_VERSION} \
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        --console --static --no-visit $SVN $TARBALL --engine-only \
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        --no-thirdparty --cmake --icet \
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        --log-file compute_node.txt \
        --arch "${ARCH}_BGQ" \
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        --prefix "${PREFIX}" \
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        --build-mode $BUILD_MODE \
        --thirdparty-path $THIRD_PARTY_PATH \
        --installation-build-dir "${INSTALLATION_BUILD_DIR}_BGQ" \
        --cc $BG_GNU_CC $CFLAGSARGS \
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        --cxx $BG_GNU_CXX $CXXFLAGSARGS $MAKEARGS \
        --group $GROUP

    rm -rf ${INSTALLATION_BUILD_DIR}_BGQ/IceT-1-0-0
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    return $?
}

# 0 on success, Non-zero on failure.
function build_for_compute_node
{
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    banner "BUILDING FOR COMPUTE NODE"
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    # We need to build Mesa with a special config file.
    STARTDIR=`pwd`
    build_mesa_BGQ
    if [[ $? != 0 ]] ; then
        warn "Mesa build failed.  Giving up"
        return 1
    fi
    cd $STARTDIR

    # We need to build zlib
    build_zlib_BGQ
    if [[ $? != 0 ]] ; then
        warn "ZLIB build failed.  Giving up"
        return 1
    fi
    cd $STARTDIR

    # We need to build VTK
    build_vtk_BGQ
    if [[ $? != 0 ]] ; then
        warn "VTK build failed.  Giving up"
        return 1
    fi
    cd $STARTDIR

    # We need to build Ice-T
    build_icet_BGQ
    if [[ $? != 0 ]] ; then
        warn "Ice-T build failed.  Giving up"
        return 1
    fi
    cd $STARTDIR

    # Build the other packages (and VisIt) that don't need special treatment. 

    MAKEARGS=""
    if test -n "$MAKE_OPT_FLAGS" ; then
        MAKEARGS="--makeflags $MAKE_OPT_FLAGS"
    fi
    CFLAGSARGS=""
    if test -n "$BG_C_OPT_FLAGS" ; then
        CFLAGSARGS="--cflag $BG_C_OPT_FLAGS"
    fi
    CXXFLAGSARGS=""
    if test -n "$BG_CXX_OPT_FLAGS" ; then
        CXXFLAGSARGS="--cxxflag $BG_CXX_OPT_FLAGS"
    fi

    # Build some packages that require GNU compilers.
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    banner "Building I/O libraries (Compute Node)"
    env SILO_EXTRA_OPTIONS="--disable-browser --disable-hzip --disable-fpzip" BUILD_VISIT_BGQ="yes" $bv_PATH/build_visit \
        --version ${VISIT_VERSION} \
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        --console --static --no-visit $SVN $TARBALL --engine-only \
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        --log-file compute_node.txt \
        --arch "${ARCH}_BGQ" \
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        --prefix "${PREFIX}" \
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        --build-mode $BUILD_MODE \
        --thirdparty-path $THIRD_PARTY_PATH \
        --installation-build-dir "${INSTALLATION_BUILD_DIR}_BGQ" \
        --cc $BG_GNU_CC $CFLAGSARGS \
        --cxx $BG_GNU_CXX $CXXFLAGSARGS $MAKEARGS \
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        --no-thirdparty --zlib $IO_PACKAGES \
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        --group $GROUP
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    if [[ $? != 0 ]] ; then
        warn "3rd party I/O build failed.  Giving up"
        return 1
    fi

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    # Call build_visit to build VisIt itself. Note that we set PAR_COMPILER, 
    # C_COMPILER, BUILD_VISIT_BGQ to trigger special behaviors in build_visit.
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    #
    # NOTE: We do not build with Mesa support because we're already using Mesa
    #       as our GL library. This way, we use the VTK rendering classes since
    #       they are working better than the VisIt Mesa-based ones.
    #
    banner "Building VisIt (Compute Node)"
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    env PAR_COMPILER=$BG_MPI_CC C_COMPILER=$BG_CC BUILD_VISIT_BGQ="yes" $bv_PATH/build_visit \
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        --version ${VISIT_VERSION} \
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        --console --static $NO_VISIT $SVN $TARBALL --engine-only\
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        --log-file compute_node.txt \
        --arch "${ARCH}_BGQ" \
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        --prefix "${PREFIX}" \
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        --build-mode $BUILD_MODE \
        --thirdparty-path $THIRD_PARTY_PATH \
        --installation-build-dir "${INSTALLATION_BUILD_DIR}_BGQ" \
        --cc $BG_CC $CFLAGSARGS \
        --cxx $BG_CXX $CXXFLAGSARGS $MAKEARGS \
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        --no-thirdparty --no-boost --zlib $IO_PACKAGES \
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        --parallel --cmake --icet \
        --group $GROUP \
        --database-plugins $VISIT_SELECTED_DATABASE_PLUGINS
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    if [[ $? != 0 ]] ; then
        warn "VisIt build failed.  Giving up"
        return 1
    fi

    return 0
}

function build_for_login_node
{
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    banner "BUILDING FOR LOGIN NODE"
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    MAKEARGS=""
    if test -n "$MAKE_OPT_FLAGS" ; then
        MAKEARGS="--makeflags $MAKE_OPT_FLAGS"
    fi
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    CFLAGSARGS=""
    if test -n "$C_OPT_FLAGS" ; then
        CFLAGSARGS="--cflag \"$C_OPT_FLAGS\""
    fi
    CXXFLAGSARGS=""
    if test -n "$CXX_OPT_FLAGS" ; then
        CXXFLAGSARGS="--cxxflag \"$CXX_OPT_FLAGS\""
    fi

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    # Build cmake, python, VTK. We pass BUILD_VISIT_BGQ in the environment so
    # VTK will be configured using a script. This works around a glitch in
    # identifying the compiler.
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    banner "Building Dependencies (Login Node)"
    $bv_PATH/build_visit \
        --version ${VISIT_VERSION} \
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        --console --static --no-visit $SVN $TARBALL --server-components-only \
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        --log-file login_node.txt \
        --arch $ARCH \
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        --prefix "${PREFIX}" \
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        --build-mode $BUILD_MODE \
        --thirdparty-path $THIRD_PARTY_PATH \
        --installation-build-dir $INSTALLATION_BUILD_DIR \
        --cc $CC $CFLAGSARGS \
        --cxx $CXX $CXXFLAGSARGS $MAKEARGS \
        --no-thirdparty --cmake --vtk --python \
        --group $GROUP
    if [[ $? != 0 ]] ; then
        warn "VisIt build failed.  Giving up"
        return 1
    fi

    # Do another build_visit pass with no BUILD_VISIT_BGQ since we don't want what
    # it would do to the resulting config-site file.
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    banner "Building VisIt (Login Node)"
    $bv_PATH/build_visit \
        --version ${VISIT_VERSION} \
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        --console --static $NO_VISIT $SVN $TARBALL --server-components-only \
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        --log-file login_node.txt \
        --arch $ARCH \
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        --prefix "${PREFIX}" \
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        --build-mode $BUILD_MODE \
        --thirdparty-path $THIRD_PARTY_PATH \
        --installation-build-dir $INSTALLATION_BUILD_DIR \
        --cc $CC $CFLAGSARGS \
        --cxx $CXX $CXXFLAGSARGS $MAKEARGS \
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        --no-thirdparty --no-boost --cmake --vtk $IO_PACKAGES --python \
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        --group $GROUP \
        --database-plugins $VISIT_SELECTED_DATABASE_PLUGINS
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    if [[ $? != 0 ]] ; then
        warn "VisIt build failed.  Giving up"
        return 1
    fi

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    # If we built VisIt then move the libsim lib directory because otherwise 
    # we'll clobber it with the login node version later.
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    if test "$NO_VISIT" = "" ; then
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        if test -d $PREFIX/${VISIT_VERSION}/linux-ppc64/libsim/V2/lib ; then
            mv $PREFIX/${VISIT_VERSION}/linux-ppc64/libsim/V2/lib $PREFIX/${VISIT_VERSION}/linux-ppc64/libsim/V2/libBGQ
        fi
        if test -d $PREFIX/${VISIT_VERSION}b/linux-ppc64/libsim/V2/lib ; then
            mv $PREFIX/${VISIT_VERSION}b/linux-ppc64/libsim/V2/lib $PREFIX/${VISIT_VERSION}b/linux-ppc64/libsim/V2/libBGQ
        fi
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    fi

    return 0
}


function printvars
{
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    echo "========================================================================"
    echo "The following variables will be used during the build process:"
    echo ""
    echo "Build Settings"
    echo "==============="
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    echo "ARCH=$ARCH"
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    echo "BUILD_MODE=$BUILD_MODE"
    echo "THIRD_PARTY_PATH=$THIRD_PARTY_PATH"
    echo "INSTALLATION_BUILD_DIR=$INSTALLATION_BUILD_DIR"
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    echo "PREFIX=$PREFIX"
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    echo "EXTRA_ARGS=$EXTRA_ARGS"
    echo "GROUP=$GROUP"
    echo "IO_PACKAGES=$IO_PACKAGES"
    echo "MAKE_OPT_FLAGS=$MAKE_OPT_FLAGS"
    echo "NO_VISIT=$NO_VISIT"
    echo "SVN=$SVN"
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    echo "VISIT_SELECTED_DATABASE_PLUGINS=$VISIT_SELECTED_DATABASE_PLUGINS"
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    echo ""
    echo "Login Node"
    echo "==========="
    echo "CC=$CC"
    echo "C_OPT_FLAGS=$C_OPT_FLAGS"
    echo "CXX=$CXX"
    echo "CXX_OPT_FLAGS=$CXX_OPT_FLAGS"
    echo ""
    echo "Compute Node"
    echo "============="
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    echo "BG_CC=$BG_CC"
    echo "BG_C_OPT_FLAGS=$BG_C_OPT_FLAGS"
    echo "BG_CXX=$BG_CXX"
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    echo "BG_CXX_OPT_FLAGS=$BG_CXX_OPT_FLAGS"
    echo ""
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    echo "BG_GNU_CC=$BG_GNU_CC"
    echo "BG_GNU_CXX=$BG_GNU_CXX"
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    echo ""
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    echo "BG_MPI_CC=$BG_MPI_CC"
    echo "BG_MPI_C_OPT_FLAGS=$BG_MPI_C_OPT_FLAGS"
    echo "BG_MPI_CXX=$BG_MPI_CXX"
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    echo "BG_MPI_CXX_OPT_FLAGS=$BG_MPI_CXX_OPT_FLAGS"
    echo "========================================================================"
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    return 0
}

function usage
{
    echo "Usage: build_visit_BGQ [arguments]"
    echo ""
    echo "This script builds statically-linked VisIt server components for BlueGene-Q "
    echo "computers. The parallel compute engine is built for the compute nodes and the"
    echo "mdserver, vcl, and engine_ser components are built for the login nodes."
    echo ""
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    echo "Argument                      Description"
    echo "============================= =========================================================="
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    echo "--database-plugins list       A list of database plugins to build (e.g. Curve2D;Silo)"
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    echo "--installation-build-dir dir  The build directory to be used to build the code."
    echo "--thirdparty-path path        The directory where 3rd party libraries will be installed."
    echo "--build-mode mode             The build mode: Debug or Release"
    echo "--group group                 Set the group for installed 3rd party libraries."
    echo "-h/--help                     Print the help and exit."
    echo "--print                       Print the variables that will be used for the build."
    echo "--makeflags flags             Build the code, passing flags to make."
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    echo "--no-compute                  Do not build the compute node version."
    echo "--no-login                    Do not build the login node version."
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    echo "--no-visit                    Do not build the VisIt sources."
    echo "--svn                         Download sources from svn."
    echo "--svn-anonymous               Download sources from anonymous svn."
    echo ""
    echo "Login Node"
    echo "==========="
    echo "--cc path                     The C compiler to use for login node compilation."
    echo "--cflag flag                  Append a flag to the CFLAGS used with the --cc compiler."
    echo "--cflags flags                Set the CFLAGS used with the --cc compiler."
    echo "--cxx path                    The C++ compiler to use for login node compilation."
    echo "--cxxflag flag                Append a flag to the CXXFLAGS used with the --cxx compiler."
    echo "--cxxflags flags              Set the CXXFLAGS used with the --cxx compiler."
    echo ""
    echo ""
    echo "Compute Node"
    echo "============="
    echo "--bgcc path                   The serial C compiler to use for compute node compilation."
    echo "--bgcflag flag                Append a flag to the CFLAGS used with the --bgcc/--bggnucc compilers."
    echo "--bgcflags flags              Set the CFLAGS used with the --bgcc/--bggnucc compilers."
    echo "--bgcxx path                  The serial C++ compiler to use for compute node compilation."
    echo "--bgcxxflag flag              Append a flag to the CXXFLAGS used with the --bgcxx/--bggnucxx compilers."
    echo "--bgcxxflags flags            Set the CXXFLAGS used with the --bgcxx/--bggnucxx compilers."
    echo ""
    echo "--bggnucc path                The serial GNU C compiler to use for compute node compilation."
    echo "                              This compiler is used for 3rd party packages that have autoconf"
    echo "                              build systems: Mesa, Silo, ... The CFLAGS specified using "
    echo "                              --bgcflag/--bgcflags are used."
    echo "--bggnucxx path               The serial GNU C++ compiler to use for compute node compilation."
    echo "                              The CXXFLAGS specified using --bgcxxflag/--bgcxxflags are used."
    echo
    echo "--bgmpicc path                The parallel C compiler to use for compute node compilation."
    echo "--bgmpicflag flag             Append a flag to the CFLAGS used with the --bgmpicc compiler."
    echo "--bgmpicflags flags           Set the CFLAGS used with the --bgmpicc compiler."
    echo "--bgmpicxx path               The parallel C++ compiler to use for compute node compilation."
    echo "--bgmpicxxflag flag           Append a flag to the CXXFLAGS used with the --bgmpicxx compiler."
    echo "--bgmpicxxflags flags         Set the CXXFLAGS used with the --bgmpicxx compiler."

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    return 0
}

function main
{
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    DO_COMPUTE="yes"
    DO_LOGIN="yes"
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    next_action=""
    next_arg=""
    for arg in "$@" ; do
        # Was the last option something that took an argument?
        if test -n "$next_arg" ; then
            # Yep.  Which option was it?
            case $next_arg in
                installation-build-dir) INSTALLATION_BUILD_DIR="$arg";;
                build-mode) BUILD_MODE="${arg}";;

                append-cflags) C_OPT_FLAGS="${C_OPT_FLAGS} ${arg}";;
                append-cxxflags) CXX_OPT_FLAGS="${CXX_OPT_FLAGS} ${arg}";;
                cflags) C_OPT_FLAGS="${arg}";;
                cxxflags) CXX_OPT_FLAGS="${arg}";;
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                cc) CC="${arg}";;
                cxx) CXX="${arg}";;
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                append-bgcflags) BG_C_OPT_FLAGS="${BG_C_OPT_FLAGS} ${arg}";;
                append-bgcxxflags) BG_CXX_OPT_FLAGS="${BG_CXX_OPT_FLAGS} ${arg}";;
                bgcflags) BG_C_OPT_FLAGS="${arg}";;
                bgcxxflags) BG_CXX_OPT_FLAGS="${arg}";;
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                bgcc) BG_CC="${arg}";;
                bgcxx) BG_CXX="${arg}";;
                bggnucc) BG_GNU_CC="${arg}";;
                bggnucxx) BG_GNU_CXX="${arg}";;
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                append-bgmpicflags) BG_C_OPT_FLAGS="${BG_MPI_C_OPT_FLAGS} ${arg}";;
                append-bgmpicxxflags) BG_CXX_OPT_FLAGS="${BG_MPI_CXX_OPT_FLAGS} ${arg}";;
                bgmpicflags) BG_MPI_C_OPT_FLAGS="${arg}";;
                bgmpicxxflags) BG_MPI_CXX_OPT_FLAGS="${arg}";;
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                bgmpicc) BG_MPI_CC="${arg}";;
                bgmpicxx) BG_MPI_CXX="${arg}";;
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                database-plugins) VISIT_SELECTED_DATABASE_PLUGINS="${arg}";;
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                group) GROUP="${arg}";;
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                makeflags) MAKE_OPT_FLAGS="${arg}";;
                thirdparty-path) THIRD_PARTY_PATH="${arg}";;
                *) error "Unknown next_arg value '$next_arg'!"
            esac
            # Make sure we process the next option as an option and not an
            # argument to an option.
            next_arg=""
            continue
        fi
        case $arg in
            --installation-build-dir) next_arg="installation-build-dir";;
            --build-mode) next_arg="build-mode";;

            --cflag) next_arg="append-cflags";;
            --cflags) next_arg="cflags";;
            --cxxflag) next_arg="append-cxxflags";;
            --cxxflags) next_arg="cxxflags";;
            --cc) next_arg="cc";;
            --cxx) next_arg="cxx";;

            --bgcflag) next_arg="append-bgcflags";;
            --bgcflags) next_arg="bgcflags";;
            --bgcxxflag) next_arg="append-bgcxxflags";;
            --bgcxxflags) next_arg="bgcxxflags";;
            --bgcc) next_arg="bgcc";;
            --bgcxx) next_arg="bgcxx";;
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            --bggnucc) next_arg="bggnucc";;
            --bggnucxx) next_arg="bggnucxx";;
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            --bgmpicflag) next_arg="append-bgmpicflags";;
            --bgmpicflags) next_arg="bgmpicflags";;
            --bgmpicxxflag) next_arg="append-bgmpicxxflags";;
            --bgmpicxxflags) next_arg="bgmpicxxflags";;
            --bgmpicc) next_arg="bgmpicc";;
            --bgmpicxx) next_arg="bgmpicxx";;

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            --database-plugins) next_arg="database-plugins";;
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            --group) next_arg="group";;
            -h|--help) next_action="help";;
            --print) next_action="printvars";;
            --makeflags) next_arg="makeflags";;
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            --no-compute) DO_COMPUTE="";;
            --no-login) DO_LOGIN="";;
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            --no-visit) NO_VISIT="--no-visit";;
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            --svn) SVN="--svn" ; DO_SVN="yes" ; TARBALL="";;
            --svn-anonymous) SVN="--svn-anonymous"; DO_SVN_ANON="yes" ; TARBALL="";;
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            --thirdparty-path) next_arg="thirdparty-path";;
        esac
    done

    if test -n "${next_action}" ; then
        case ${next_action} in
            printvars) printvars; exit 2;;
            help) usage; exit 2;;
        esac
    fi

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    # Print the settings we're using for the build
    printvars

    # Make build directories.
    if ! test -d $INSTALLATION_BUILD_DIR ; then
        mkdir $INSTALLATION_BUILD_DIR
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    fi
    if ! test -d ${INSTALLATION_BUILD_DIR}_BGQ ; then
        mkdir ${INSTALLATION_BUILD_DIR}_BGQ
    fi

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    # Make an installation directory.
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    if ! test -d $THIRD_PARTY_PATH ; then
        mkdir $THIRD_PARTY_PATH
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    else
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        echo "$THIRD_PARTY_PATH already exists."
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    fi

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    if test "${SVN}" == "" && test "${NO_VISIT}" == "" ; then
        # We're building VisIt from a local source file (not svn) so check that
        # the file is present at the level of the build_visit_BGQ script.
        # If we find it then we'll copy it into the installation build dirs so
        # the build_visit scripts will locate it.
        if ! test -e visit${VISIT_VERSION}.tar.gz ; then
            error "VisIt source file visit${VISIT_VERSION}.tar.gz not found in $PWD. Exiting."
            exit 3
        fi

        # Copy local source file into installation build dirs if it's not there.
        if ! test -e $INSTALLATION_BUILD_DIR/visit${VISIT_VERSION}.tar.gz ; then
            cp visit${VISIT_VERSION}.tar.gz $INSTALLATION_BUILD_DIR
        fi
        if ! test -e ${INSTALLATION_BUILD_DIR}_BGQ/visit${VISIT_VERSION}.tar.gz ; then
            cp visit${VISIT_VERSION}.tar.gz ${INSTALLATION_BUILD_DIR}_BGQ
        fi
    fi

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    # We build cmake specially so we can share the build between the login
    # node and compute node build stages.
    build_cmake

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    # We build the compute node version first.
    if test -n "${DO_COMPUTE}" ; then
        build_for_compute_node
        if [[ $? != 0 ]] ; then
            warn "Compute node build failed.  Giving up"
            exit 4
        fi
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    fi

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    # Now build for the login node so the engine_ser for the login node will
    # overwrite the compute node's version that was previously installed.
    if test -n "${DO_LOGIN}" ; then
        build_for_login_node
        if [[ $? != 0 ]] ; then
            warn "Login node build failed.  Giving up"
            exit 5
        fi
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    fi

    # We installed VisIt so tar up the binary distribution since it contains
    # binaries for both the login nodes and the compute nodes.
    if test "$NO_VISIT" = "" ; then
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        VV=$(echo ${VISIT_VERSION} | tr "." "_")
        tar zcf visit${VV}.${PREFIXARCH}.tar.gz ${PREFIXARCH}
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    fi

    return 0
}

main $@
exit 0