#!/usr/bin/env python

from __future__ import print_function

import os,sys
import getopt
import re

# Set this to true if compiling within a master_tags checkout
master_tag = True
#master_tag = False

###############################################################################
# this function was once called main() but really it was only for help.
def help(options=False, envivars=False, examples=False):
    """
Build and Install DiFX

Usage:
    install-difx [options]

Builds and installs mpifxcorr and associated tools.  If invoked from the
setup directory, the build will be within the source directory heirarchy,
otherwise the build will be made within the current directory.

By default install-difx will build and install the essential DiFX tools,
but stop if any errors are encountered (e.g. if something fails to build).

For the standard libraries and applications, build-difx will try to run
autoreconf first.  If this fails, step by step configuration will be tried.

Remember, if you haven't signed up to the difx-users mailing list,
please do so at https://listmgr.nrao.edu/mailman/listinfo/difx-users.

For help with the (large number of options):

    install-difx --help-options
    """
    if options:
        print("""
The install-difx options are:

-f --force         Carry on regardless of any errors (all failed commands
                   will be listed at the end.)

-h --help          Display this help message and quit.

-v --verb          Provide more chatter about progress.

   --mk5daemon     Install mk5daemon (not installed by default)

   --perl          Install some non-standard perl utilities (deprecated)

   --withmonitor   Try to build the difx_monitor application (requires pgplot)

   --withfb        Build filterbank (which requires pgplot)

   --withguiserver Build guiServer

   --withhops      Build HOPS (which requires pgplot)

   --withm6support Build Mark6 support (which requires FUSE)

   --withmark6meta Build Mark6 metadata support

   --withpolconvert Build PolConvert (which requires CASA)

   --withpython    Build Python bindings for certain libraries (requires ctypes)

   --withdatasim   Build the datasim application (requires gsl)

   --noinstall     Don't install, only build.

   --reconf        Reconfigure step by step rather than with autoreconf

   --noconf        Assume existing configuration is correct

   --clean         Run make clean for all components

   --g77           Use g77, rather than gfortran

   --extraflags='flags' Add 'flags' to each of the CFLAGS, CXXFLAGS, and
                   FFLAGS environment variables

   --makeflags='flags' Add 'flags' to each direct call of the make program,
                   (so you can do make -j 4 to speed up compilation)

   --noipp         Don't try and install ipp package config file, and
                   also disable IPP acceleration of mpifxcorr

   --ipp           Force installation of ipp package config file
                   (default doesn't overwrite existing)

   --nodoc         Don't build the documentation

   --cache='name'  Speeds up the configuration using cache files
                   'name' and 'name-CXX' in the build directory

   --targ='...'    Runs make ... on each of the components.
                   The default is 'all'.

   --pristine      Removes auto-built sources from source directories
                   (and implies --clean)

   --doonly='...'  Will only build the components specified in the list ...,
                   where ... is a comma-separated list of sub-packages in
                   ["perl", "difxio", "difxmessage", "mark5access", "vdifio",
                    "calcif2", "difx2profile", "misc","vis2screen",
                    "calcserver", "difx2fits", "vex2difx", "difx2mark4",
                    "mpifxcorr", "difxfilterbank", "hops", "m6support",
                    "polconvert", "guiServer", "mk5daemon", "difx_monitor",
                    "datasim", "difxcalc11", "mark6sg", "mark6meta"]
   --skip='...'    Does a normal build, but skips components in a comma
                   separated list (drawn from the --doonly list).
   --also='...'    Does a normal build, but adds components in a comma
                   separated list (drawn from the --doonly list).

   --newver='...'  changes the source directory used on a per component
                   basis (from what would otherwise be used).  This comma
                   separated list (of changes) should contain ':' paired
                   component name and new version.  Usually the new version
                   code lies on a branch somewhere, rather than 'trunk'
""")
    if envivars:
        print("""
The following environment variables are essential to the build process.
They are usually set up if you source the "setup-difx.bash" script (which
must perhaps be adapted to your local circumstances):

    DIFX_VERSION    master tag "DiFX-2.6.2", &c., or "trunk" for developers
    DIFXROOT        absolute path to specify where the build products
                    are to be installed.  If you build outside of the
                    source tree, you may then remove the build directory
    MPICXX          used to specify the C++ MPI-enabled compiler
    IPPROOT         path to the IPP tools, used to create the ipp.pc
                    pkgconfig file.
    PKG_CONFIG_PATH where pkg-config should find .pc files.  This script
                    sets it to a directory within the build area which is
                    prepended to what is supplied by the environment.

Optional variables:
    PGPLOTDIR       for the tools that require it, the location of the
                    PGPLOT installed tools.

    DIFX_REPLDIR_PATH allows a replacement to the normal choice for the
                    directory in which to build, perhaps with different
                    compilation options set.  See the script for details.

The following environment variables are no longer used by this script,
but exceptions will be raised if they are missing.  (The configure process
that this script invokes may make use of these.)

    DIFXBITS    required by genipp
    IPPLIB32    required by (deprecated) pulseprofile
    IPPLIB64    required by (deprecated) pulseprofile
""")
    if examples:
        print("""
For example Haystack usually builds with:

    path-to-setup/install-difx -v --ipp --cache=difx-config-cache \
        --reconf --force --withhops --withm6support --withpolconvert

""")

###############################################################################
# Parse command line options and arguments
# When adding an option or argument
#  * Make sure a default is set
#  * Make sure it is documented in help.__doc__
###############################################################################
try:
    opts, args = getopt.gnu_getopt(sys.argv[1:], "fhv",
        ["force", "help", "verb",
         "help-options", "help-environment", "help-examples",
         "mk5daemon", "withmonitor", "withdatasim", "perl", "withfb",
         "withhops", "withm6support", "withguiserver", "withpython",
         "withpolconvert", "noinstall", "reconf", "noconf", "clean",
         "g77", "extraflags=", "makeflags=", "withmark6meta",
         "noipp", "ipp", "nodoc", "cache=", "targ=", "pristine",
         "doonly=", "skip=", "also=", "newver=", ])
except getopt.GetoptError as err:
    print(err)
    print(help.__doc__)
    sys.exit(2)

if not 0 <= len(args) <= 0:
    print("Error: Wrong number of Arguments")
    print(help.__doc__)
    sys.exit(2)

# set defaults
force = False
reconf = False
noinstall = False
gfortran = True
extraflags = None
MAKEcommand = "make "
doclean = False
target = 'all'
verb = False
cache = 'none'
errors = []
noconf = False
pristine = False
dodoc = True
dopybindings = False
doipp = 0
orgcwd = os.getcwd()
components = {"perl"          :False,
              "difxio"        :True,
              "codifio"       :True,
              "difxmessage"   :True,
              "dirlist"       :True,
              "mark5access"   :True,
              "mark6meta"     :False,
              "vdifio"        :True,
              "calcif2"       :False,
              "difxcalc11"    :True,
              "difx2profile"  :True,
              "misc"          :True,
              "vis2screen"    :True,
              "calcserver"    :False,
              "difx2fits"     :True,
              "vex2difx"      :True,
              "difx2mark4"    :False,
              "mpifxcorr"     :True,
              "mark6sg"       :False,
              "difxfilterbank":False,
              "hops"          :False,
              "m6support"     :False,
              "polconvert"    :False,
              "guiServer"     :False,
              "mk5daemon"     :False,
              "difx_monitor"  :False,
              "datasim"       :False,
              "python"        :True,
}
def setNormalComponentsFalse():
	global components
	components["difxio"] = False
	components["difxmessage"] = False
	components["dirlist"] = False
	components["mark5access"] = False
	components["mark6meta"] = False
	components["codifio"] = False
	components["vdifio"] = False
	components["calcif2"] = False
	components["difx2profile"] = False
	components["misc"] = False
	components["vis2screen"] = False
	components["calcserver"] = False
	components["difxcalc11"] = False
	components["difx2fits"] = False
	components["vex2difx"] = False
	components["difx2mark4"] = False
	components["hops"] = False
	components["polconvert"] = False
	components["mpifxcorr"]= False
	components["mark6sg"]= False
	components["python"]= False
def setOnlyComponents(only):
	global components
	setNormalComponentsFalse()
	array = only.strip().split(',')
	if(len(array)==0):
		raise RuntimeError( "Could not find components to build " +
                    "in only argument '%s'"%only)
	for a in array:
		c = a.strip()
		if(c in components):
			components[c] = True
			if(c == "python"):
				dopybindings = True
		else:
                        if (c != ''): raise RuntimeError(
                            "Unrecognized only component '%s'" % (a))
def setSkipComponents(skip):
        global components
        array = skip.strip().split(',')
        if(len(array)==0):
                raise RuntimeError("--skip invoked without a list")
        for a in array:
                c = a.strip()
                if(c in components):
                        components[c] = False
                        if(c == "python"):
                                dopybindings = False
                else:
                        raise RuntimeError("Unknown skip component '%s'"%(a))
def setAlsoComponents(also):
        global components
        array = also.strip().split(',')
        if(len(array)==0):
                raise RuntimeError("--also invoked without a list")
        for a in array:
                c = a.strip()
                if(c in components):
                        components[c] = True
                        if(c == "python"):
                                dopybindings = True
                else:
                        raise RuntimeError("Unknown also component '%s'"%(a))

adjustments=dict()
def newVersionComponents(changes):
        global components
        adjusts = changes.strip().split(',')
        if(len(adjusts)==0):
                raise RuntimeError("--newver invoked without a list")
        for a in adjusts:
            try:
                com,ver = a.split(':')
            except:
                raise RuntimeError("elements must be pairs of component:path")
            if(com in components):
                adjustments[com] = ver
            else:
                raise RuntimeError("%s is not a component"%com)


# read options
if len(opts) > 0:
    for o, a in opts:
        if o in ("-f", "--force"):
            force = True
        if o in ("-h", "--help"):
            print(help.__doc__)
            sys.exit(0)
        if o == "--help-options":
            help(options=True)
            sys.exit(0)
        if o == "--help-environment":
            help(envivars=True)
            sys.exit(0)
        if o == "--help-examples":
            help(examples=True)
            sys.exit(0)
        if o in ("-v", "--verb"):
            verb = True
        if o == "--mk5daemon":
            components["mk5daemon"] = True
        if o == "--withmonitor":
            components["difx_monitor"] = True
        if o == "--withdatasim":
            components["datasim"] = True
        if o == "--perl":
            components["perl"] = True
        if o == "--withfb":
            components["difxfilterbank"] = True
        if o == "--withhops":
            components["hops"] = True
        if o == "--withm6support":
            components["m6support"] = True
        if o == "--withmark6meta":
            components["mark6meta"] = True
        if o == "--withpolconvert":
            components["polconvert"] = True
        if o == "--withguiserver":
            components["guiServer"] = True
        if o == "--withpython":
            dopybindings = True
        if o == "--noinstall":
            noinstall = True
        if o == "--reconf":
            reconf = True
        if o == "--noconf":
            noconf = True
            reconf = True
        if o == "--clean":
            doclean = True
        if o == "--nodoc":
            dodoc = False
        if o == "--g77":
            gfortran = False
        if o == "--extraflags":
            extraflags = a
        if o == "--makeflags":
            MAKEcommand += a + ' '
        if o == "--ipp":
            doipp = 1
        if o == "--noipp":
            doipp = -1
        if o == "--cache":
            cache = a
        if o == "--targ":
            target = a
            noinstall = True
        if o == "--pristine":
            pristine = True
            doclean = True
            force = True
        if o == "--doonly":
	        setOnlyComponents(a)
        if o == "--skip":
	        setSkipComponents(a)
        if o == "--also":
	        setAlsoComponents(a)
        if o == "--newver":
                newVersionComponents(a)

###### Get all relevant environment variables ###########
print("************************************")
print("Getting environmental variables")
print()
difxroot = os.environ.get('DIFXROOT')
if not difxroot:
    raise RuntimeError("DIFXROOT must be defined")
if not re.match("/",difxroot):
    raise RuntimeError("DIFXROOT must be an absolute path")

bindir = difxroot + '/bin/'
libdir = difxroot + '/lib/'
pkgdir = difxroot + '/lib/pkgconfig/'
incdir = difxroot + '/include/'
ipproot = os.environ.get('IPPROOT')
mpicxx = os.environ.get('MPICXX')
pgplotdir = os.environ.get('PGPLOTDIR')
platform = sys.platform

### these do not seem to be used by the script directly
difxbits = os.environ.get('DIFXBITS')
ipplib32 = os.environ.get('IPPLIB32')
ipplib64 = os.environ.get('IPPLIB64')

if(extraflags is not None):
    ###### Get all relevant environment variables ###########
    print("************************************")
    print("Setting environmental variables")
    print()
    for ftype in ["CFLAGS", "CXXFLAGS", "FFLAGS"]:
        thisflags = extraflags
        if(ftype in os.environ):
            thisflags = os.environ[ftype] + ' ' + extraflags
        os.environ[ftype] = thisflags


##### Check that appropriate setup has been done ########
if not master_tag:
    if os.environ.get('DIFX_VERSION') == None:
        print("You must have already source'd setup.bash/setup.csh!")
        print("DIFX_VERSION was undefined - aborting compilation")
        raise RuntimeError("DIFX_VERSION undefined")
    difx_version = os.environ.get('DIFX_VERSION')
    if difx_version != "trunk":
        difx_version = "branches/" + difx_version
else:
    difx_version = ''

##### OSX Specific changes
if platform == "darwin":
    print("Using Darwin tools")
    LIBTOOLIZE = "glibtoolize"
    SHAREDPOSTFIX = "dylib"
else:
    LIBTOOLIZE = "libtoolize"
    SHAREDPOSTFIX = "so"

if gfortran:
    os.environ['USEGFORTRAN'] = 'yes'


###### Targets ####################################################
# auto_compile(doreconf, dolibtoolize, doautoheader, ..., dompicxx)

# calcif2 is a utility on trunk but an application on master tags

libtargets = []
if components["difxio"]:
    libtargets.append(["difxio",     difx_version, True,True,True,False])
if components["codifio"]:
    libtargets.append(["codifio",    difx_version, True,True,True,False])
if components["difxmessage"]:
    libtargets.append(["difxmessage",difx_version, True,True,True,False])
if components["dirlist"]:
    libtargets.append(["dirlist",    difx_version, True,True,True,False])
if components["mark6sg"]:
    libtargets.append(["mark6sg",    difx_version, True,True,True,False])
if components["mark5access"]:
    libtargets.append(["mark5access",difx_version, True,True,True,False])
if components["mark6meta"]:
    libtargets.append(["mark6meta",  difx_version, True,True,True,False])
if components["python"]:
    libtargets.append(["python",     difx_version, True,True,False,False])
if components["vdifio"]:
    libtargets.append(["vdifio",     difx_version, True,True,True,False])

utiltargets = []
if components["calcif2"] and not master_tag:
    utiltargets.append(["calcif2",   difx_version, True,False,True,False])
if components["difx2profile"]:
    utiltargets.append([
	"pulsar/difx2profile",       difx_version, True,False,True,True])
if components["misc"]:
    utiltargets.append(["misc",      difx_version, True,False,False,False])
if components["vis2screen"]:
    utiltargets.append(["vis2screen",difx_version, True,False,False,True])

apptargets = []
if components["calcif2"] and master_tag:
    apptargets.append(["calcif2",   difx_version, True,False,True,False])
if components["calcserver"]:
    apptargets.append(["calcserver", difx_version, True,True,False,False])
if components["difxcalc11"]:
    apptargets.append(["difxcalc11", difx_version, True,False,False,False])
if components["difx2fits"]:
    apptargets.append(["difx2fits",  difx_version, True,False,True,False])
if components["vex2difx"]:
    apptargets.append(["vex2difx",   difx_version, True,True,True,False])
if components["difx2mark4"]:
    apptargets.append(["difx2mark4", difx_version, True,True,True,False])
if components["difxfilterbank"]:
    apptargets.append(["difxfilterbank", difx_version, True,False,False,True])
if components["hops"]:
    apptargets.append(["hops",       difx_version, True,True,True,False])
if components["m6support"]:
    apptargets.append(["m6support",  difx_version, True,False,True,False])
if components["polconvert"]:
    apptargets.append(["polconvert", difx_version, True,False,True,False])
if components["guiServer"]:
    apptargets.append(["guiServer",  difx_version, True,False,False,True])
if components["mk5daemon"]:
    apptargets.append(["mk5daemon",  difx_version, True,False,True,False])
if components["difx_monitor"]:
    apptargets.append(["difx_monitor", difx_version, True,False,False,True])
if components["datasim"]:
    apptargets.append(["datasim", difx_version, True,True,True,False])

for key in adjustments:
    todo = True
    if todo:
      for lib in libtargets:
        if lib[0] == key:
            lib[1] = adjustments[key]
            print("Using version %s of component %s" % (lib[1],lib[0]))
            todo = False
    if todo:
      for util in utiltargets:
        if util[0] == key:
            util[1] = adjustments[key]
            print("Using version %s of component %s" % (util[1],util[0]))
            todo = False
    if todo:
      for app in apptargets:
        if app[0] == key:
            app[1] = adjustments[key]
            print("Using version %s of component %s" % (app[1],app[0]))
            todo = False
    if todo:
        raise RuntimeError(
            "Adjustment of %s to %s was not made" % (key,adjustments[key]))

# a navigation aid
def os_chdir(dir):
    os.chdir(dir)
    if verb:
        print("--> " + dir)
        print("==> " + os.getcwd())
        print()
    sys.stdout.flush()

# work out build and source directories
blddir = os.getcwd()
setupdir = os.path.dirname(sys.argv[0])
if not setupdir:
    setupdir = "."
os_chdir(setupdir)

# master_tags/ has no setup directory
if not master_tag:
    os_chdir("..")
topdir = os.getcwd()

# think a bit about pkgconfig path
pkg_config_path = blddir + "/pkgconfig"
pkg_config_path += ":" + os.environ.get('PKG_CONFIG_PATH')
os.environ['PKG_CONFIG_PATH'] = pkg_config_path

# source dir build starts in 'setup' of the svn tree and topdir of master_tag
# inbdir is set True when the build directory differs from the source dir
if blddir == topdir + '/setup':
    if verb:
        print()
        print("Building/Installing from the source directory")
    inbdir = False
    startdir = topdir + '/setup'
elif master_tag and blddir == topdir:
    if verb:
        print()
        print("Building/Installing from the master tag source directory")
    inbdir = False
    startdir = topdir
else:
    if verb:
        print()
        print("Building/Installing from the build directory:")
    inbdir = True
    if master_tag:
        startdir = topdir
    else:
        startdir = topdir + '/setup'
    # allow use of symbolic links in partial checkouts
    repldir = os.environ.get('DIFX_REPLDIR_PATH')
    if not repldir:
        repldir = 'no-repldir-to-replace-with-blddir'
    if verb:
        print(" Replace dir:  " + repldir)

if cache != 'none':
    cache = ' --cache-file=' + blddir + '/' + cache

if verb:
    print("   Setup dir:  " + setupdir)
    print("  Source dir:  " + topdir)
    print("   Start dir:  " + startdir)
    print("   Build dir:  " + blddir)
    print(" PkgCfg path:  " + os.environ.get('PKG_CONFIG_PATH'))
    print("")

###### Subroutine to run a command and raise error on non-zero return
def run(cmd):
    if verb:
        print("Run(" + cmd + ") in " + os.getcwd())
    sys.stdout.flush()
    if os.system(cmd):
        if force:
            errors.append(os.getcwd() + ' ' + cmd + " failed.")
        else:
            raise RuntimeError("Error running " + cmd + " in " + os.getcwd())

###### Subroutine to do the compiling of an auto-tool ###
def auto_compile(doreconf, dolibtoolize, doautoheader, prefix, dompicxx):
    thisdir = os.getcwd()   # somewhere below topdir
    if (doreconf and (reconf or os.system("autoreconf -if"))):
        if noconf and os.path.exists('configure'):
            print("Re-using existing configuration")
        else:
            print("Reconfiguring step by step")
            if os.path.exists('m4'):
                run("aclocal -I m4")
            else:
                run("aclocal")
            if dolibtoolize:
                run(LIBTOOLIZE+" --copy --force")
            run("autoconf")
            if doautoheader:
                run("autoheader")
            run("automake -acf")

    if inbdir:
        cfp = thisdir
        blp = cfp.replace(topdir, blddir)
        blp = blp.replace(repldir, blddir)
        if not os.path.exists(blp):
            os.makedirs(blp)
            if verb:
                print("++> " + blp + " was created")
        os_chdir(blp)
    else:
        cfp = '.'

    if noconf and os.path.exists('config.status'):
        print("Re-using existing configuration")
    else:
        configstring = cfp + "/configure --prefix=" + prefix
        if cache != 'none':
            configstring += cache
        # configstring = cfp + "/configure --prefix=" + prefix + cache
        if dompicxx:
            if cache != 'none':
                configstring += "-CXX"
            configstring += " CXX=" + mpicxx
        if dopybindings and check_configureAC_has(
            cfp+"/configure.ac", "enable-python"):
                configstring += " --enable-python "
        if dopybindings and check_configureAC_has(
            cfp+"/configure.ac", "with-python"):
                configstring += " --with-python "
        run(configstring)

    run(MAKEcommand + target)
    if not noinstall:
        run(MAKEcommand + "install")
    os_chdir(thisdir)

def check_configureAC_has(cfpath, key):
    try:
        for line in open(cfpath,'r'):
            if key in line:
                return True
    except:
        print("Warning: could not check %s for %s\n.")
    return False

###### Subroutine to set up documentation area ##########
def make_doc_area(basedocdir):
    print("\n**** publishing doco-index ****\n")
    if not os.path.exists(basedocdir):
        os.mkdir(basedocdir)
    print("cp -f %s/doco-index.html %s/index.html" % (startdir, basedocdir))
    os.system(
        "cp -f %s/doco-index.html %s/index.html" % (startdir, basedocdir))

###### Work ##########################################

# a few of these are (randomly) svn'd...
autojunk  = 'aclocal.m4 autom4te.cache compile config.guess'
autojunk += ' config.h.in config.sub configure depcomp config.status'
autojunk += ' install-sh ltmain.sh Makefile.in missing'
# autojunk += ' COPYING INSTALL'

if doclean:
    if components["perl"]:
        print("**** Cleaning vexlib")
        os_chdir("libraries/vex/"+difx_version+"/vexlib")
        run(MAKEcommand + "clean")
        os_chdir(topdir)

    os_chdir("libraries")
    thisdir = os.getcwd()
    for libtarget in libtargets:
        targetdir = libtarget[0] + '/' + libtarget[1]
        if not os.path.exists(targetdir):
            print("**** Could not find "+targetdir+", trying Trunk")
            targetdir = libtarget[0] + '/trunk/'
        if os.path.exists(targetdir):
            print()
            print("**** Cleaning "+targetdir)
            os_chdir(targetdir)
            run(MAKEcommand + "-k clean distclean")
            if pristine:
                run("rm -rf " + autojunk)
        else:
            print()
            print("**** Skipping "+targetdir)
            print()
        os_chdir(thisdir)

    os_chdir(topdir)
    os_chdir("applications")
    thisdir = os.getcwd()
    for apptarget in apptargets:
        targetdir = apptarget[0] + '/' + apptarget[1]
        if not os.path.exists(targetdir):
            print("**** Could not find "+targetdir+", trying Trunk")
            targetdir = apptarget[0] + '/trunk/'
        if os.path.exists(targetdir):
            print()
            print("**** Cleaning "+targetdir)
            os_chdir(targetdir)
            run(MAKEcommand + "-k clean distclean")
            if pristine:
                run("rm -rf " + autojunk)
        else:
            print()
            print("**** Skipping "+targetdir)
            print()
        os_chdir(thisdir)
    
    os_chdir(topdir)
    os_chdir("utilities")
    thisdir = os.getcwd()
    for utiltarget in utiltargets:
        if utiltarget[1] == '':
            targetdir = utiltarget[0]
        else:
            targetdir= utiltarget[1]  + '/' + utiltarget[0]
            if not os.path.exists(targetdir):
                print("**** Could not find "+targetdir+", trying Trunk")
                targetdir = utiltarget[0] + '/trunk/'
            if os.path.exists(targetdir):
                print()
                print("**** Cleaning "+targetdir)
                os_chdir(targetdir)
                run(MAKEcommand + "-k clean distclean")
                if pristine:
                    run("rm -rf " + autojunk)
            else:
                print()
                print("**** Skipping "+targetdir)
                print()
        os_chdir(thisdir)

    targetdir = topdir + "/mpifxcorr/" + difx_version
    if not os.path.exists(targetdir):
        print("**** Could not find "+targetdir+", trying Trunk")
        targetdir = topdir + "/mpifxcorr/trunk/"
    if os.path.exists(targetdir):
        print()
        print("**** Cleaning "+targetdir)
        os_chdir(targetdir)
        run(MAKEcommand + "-k clean distclean") 
        if pristine:
            run("rm -rf " + autojunk)
        else:
            print()
            print("**** Skipping "+targetdir)
            print()

    os_chdir(topdir)
    if pristine:
        run('find . -name Makefile.in -exec rm {} \;')
    sys.exit(0)  # Clean exit


##### Make directories if required ######################
if not noinstall:
    print("************************************")
    print("Setting up directories")
    print()

    if not os.path.exists(difxroot):
        os.mkdir(difxroot)
    if not os.path.exists(bindir):
        os.mkdir(bindir)
    if not os.path.exists(libdir):
        os.mkdir(libdir)
    if not os.path.exists(pkgdir):
        os.mkdir(pkgdir)
    if not os.path.exists(incdir):
        os.mkdir(incdir)

    ##### Install IPP package config file if appropriate  ###
    if doipp<0:
        print("Not installing IPP .pc file")
        print()
    else:
        if os.path.exists(pkgdir+"/ipp.pc") and doipp==0:
            print(pkgdir+"ipp.pc already exists")
            print()
        else:
            print("Creating "+pkgdir+"ipp.pc")
            os_chdir(pkgdir)
            run(startdir+"/genipppc "+ipproot)
            os_chdir(topdir)
            print()

##### Compile non-standard libraries ####################
if components["perl"]:
    print()
    print("************************************")
    print("Building vex")
    print()
    os_chdir("libraries/vex/"+difx_version+"/vexlib")
    if platform == "darwin":
        run(MAKEcommand + "-f Makefile.osx")
    else:
        run(MAKEcommand)
    if not noinstall:
        run("mv -f libvex." + SHAREDPOSTFIX + " " + libdir)
        run("mv -f libvex.a " + libdir)
    os_chdir("../vexperl")
    run("perl Makefile.PL PREFIX=" + difxroot)
    run(MAKEcommand)
    if not noinstall:
        run(MAKEcommand + "install")
    os_chdir(topdir)

    print()
    print("************************************")
    print("Building Astro Perl")
    print()
    os_chdir("libraries/perl/"+difx_version+"/Astro")
    run("perl Makefile.PL PREFIX="+difxroot)
    run(MAKEcommand)
    if not noinstall:
        run(MAKEcommand + "install")
        os_chdir(topdir)

    print()
    print("************************************")
    print("Building DIFX-Input Perl")
    print()
    os.chdir("libraries/perl/"+difx_version+"/DIFX-Input")
    run("perl Makefile.PL PREFIX="+difxroot)
    run(MAKEcommand)
    if not noinstall:
        run(MAKEcommand + "install")
        os.chdir(topdir)

##### Make standard (autotool'd) libraries ###############
os_chdir("libraries")
thisdir = os.getcwd()
for libtarget in libtargets:
    targetdir = libtarget[0]  + '/' + libtarget[1] 
    if not os.path.exists(targetdir):
        print("**** Could not find "+targetdir+", trying Trunk")
        targetdir = libtarget[0] + '/trunk/'
    if os.path.exists(targetdir):
        print()
        print()
        print("************************************")
        print("Building ", targetdir)
        print()
        os_chdir(targetdir)
        auto_compile(libtarget[2], libtarget[3], libtarget[4],
            difxroot, libtarget[5])
    else:
        print()
        print("******* Skipping "+targetdir)
        print()
    os_chdir(thisdir)
os_chdir(topdir)

if components["mpifxcorr"]:
    ##### Make mpifxcorr #####################################
    print()
    print("************************************")
    print("Making mpifxcorr")
    print()

    targetdir = "mpifxcorr/" + difx_version
    if not os.path.exists(targetdir):
        print("**** Could not find "+targetdir+", trying Trunk")
        targetdir = 'mpifxcorr/trunk/'

    os_chdir(targetdir);
    thisdir = os.getcwd()

    if noconf and os.path.exists('configure'):
        print("Reusing mpifxcorr configuration")
    else:
        print("Reconfiguring mpifxcorr")
        run("aclocal")
        run("autoconf")
        run("autoheader")
        run("automake -acf")
        # the files added are all present, but that need not always be true....

    if inbdir:
        cfp = thisdir
        blp = cfp.replace(topdir, blddir)
        blp = blp.replace(repldir, blddir)
        if not os.path.exists(blp):
            os.makedirs(blp)
            if verb:
                print("++> " + blp + " was created")
        os_chdir(blp)
    else:
        cfp = '.'

    if noconf and os.path.exists('config.status'):
        print("Re-using existing mpifxcorr configuration")
    else:
        configstring = cfp + "/configure CXX=" + mpicxx
        configstring += " --prefix=" + difxroot
        if doipp<0:
            configstring += ' --disable-ipp '
        if cache != 'none':
            configstring += cache + "-CXX"
        run(configstring)

    run(MAKEcommand + target)
    if not noinstall:
        run(MAKEcommand + "install")
    os_chdir(topdir)

##### Make standard (autotool'd) applications ############
os_chdir("applications")
thisdir = os.getcwd()
for apptarget in apptargets:
    targetdir = apptarget[0]  + '/' + apptarget[1] 
    if not os.path.exists(targetdir):
        print("**** Could not find "+targetdir+", trying Trunk")
        targetdir = apptarget[0] + '/trunk/'
    if os.path.exists(targetdir):
        print()
        print()
        print("************************************")
        print("Building ", apptarget[0])
        print()
        os_chdir(targetdir)
        auto_compile(apptarget[2], apptarget[3], apptarget[4],
            difxroot, apptarget[5])
    else:
        print()
        print("******* Skipping "+targetdir)
        print()
    os_chdir(thisdir)
os_chdir(topdir)

##### Make standard (autotool'd) utilities ###############
os_chdir("utilities")
thisdir = os.getcwd()
for utiltarget in utiltargets:
    if (utiltarget[1] == ''):
        targetdir = utiltarget[0]
    else:
        targetdir= utiltarget[1]  + '/' + utiltarget[0]
    if not os.path.exists(targetdir):
        print("**** Could not find "+targetdir+", trying Trunk")
        targetdir = utiltarget[0] + '/trunk/'
    if os.path.exists(targetdir):
        print()
        print()
        print("************************************")
        print("Building ", utiltarget[0])
        os_chdir(targetdir)
        auto_compile(utiltarget[2], utiltarget[3], utiltarget[4],
            difxroot, utiltarget[5])
    else:
        print()
        print("******* Skipping "+targetdir)
        print()
    os_chdir(thisdir)
os_chdir(topdir)

##### Make documentation #################################
def make_doc_dirs(basedocdir, targetdir):
    os_chdir(targetdir)
    cfp = os.getcwd()
    blp = cfp.replace(topdir, blddir)
    blp = blp.replace(repldir, blddir)
    if not os.path.exists(blp):
        os.makedirs(blp)
        print("++> " + blp + " was created")
    os_chdir(blp)
    return(cfp, blp)

def run_doxygen(basedocdir, targetdir):
    if inbdir:
        cfp,blp = make_doc_dirs(basedocdir, targetdir)
        if verb:
            print('src:  ' + cfp + '\nbld:  ', blp + '\nroot: ', basedocdir)
            print("cp -f %s/Doxyfile %s" % (cfp, blp))
        os.system("cp -f %s/Doxyfile %s" % (cfp, blp))
    os.system("doxygen Doxyfile")

if(dodoc):
    basedocdir = difxroot + '/doc/'
    make_doc_area(basedocdir)
    if not os.path.exists(basedocdir):
        raise Exception("Unable to set up doc area '%s'" % basedocdir)
    targetdir = "mpifxcorr/" + difx_version
    if not os.path.exists(targetdir):
        print("**** Could not find "+targetdir+", trying Trunk")
        targetdir = targetdir = "mpifxcorr/" + '/trunk/'
    if os.path.exists(targetdir):
        print()
        print()
        print("************************************")
        print("Building docs from ", targetdir, "with", end="  ")
        sys.stdout.flush()
        if os.system("which doxygen") != 0:
            print("No doxygen installed - skipping mpifxcorr documentation")
        else:
            run_doxygen(basedocdir, targetdir)
        ### build the user manual from doc/userguide
    else:
        print()
        print("******* Skipping "+targetdir)
        print()

##### Check for errors and list if present ###############
if (force and not errors == []):
    print()
    print()
    print("************************************")
    print("WARNING: Errors were encountered during installation")
    print()
    for error in errors:
        print(error)
else:
    print("Done!")

##### Remind people as is done in the help above! ############
print('''
Remember, if you haven't signed up to the difx-users mailing list,
please do so at https://listmgr.nrao.edu/mailman/listinfo/difx-users.
''')