#==============================================================================
# Jam configuration and actions for MacOS/X
# Copyright (C) 2003-2005 by Eric Sunshine <sunshine@sunshineco.com>
#
#    This library is free software; you can redistribute it and/or modify it
#    under the terms of the GNU Library General Public License as published by
#    the Free Software Foundation; either version 2 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 Library General Public
#    License for more details.
#
#    You should have received a copy of the GNU Library General Public License
#    along with this library; if not, write to the Free Software Foundation,
#    Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
#==============================================================================
SHELL ?= "/bin/sh" ;

MACOSX_ENVIRONMENT = "export MACOSX_DEPLOYMENT_TARGET=10.2" ;
PLUGIN.LFLAGS += "-bundle" ;
# We use the ugly -Wl form, which does not contain embedded whitespace (unlike
# "-framework AppKit"), to help external projects which use the result of
# "cs-config --libs" in conjunction with GNU libtool, since libtool likes to
# re-arrange arguments, not realizing that "-framwork" and "AppKit" need to
# stay together.
LINKLIBS += "-Wl,-framework,AppKit" "-Wl,-framework,Foundation" ;

# Jambase in Jam 2.4 has a bug where it incorrectly defines RANLIB as "" for
# MacOS/X, and this bogus value will override a RANLIB set via ?= in Jamconfig,
# by a configure script, thus we must give RANLIB an appropriate value here if
# we find that it has the bogus value.  Jam 2.5 does not contain this bug.
# Furthermore, MacOS/X Panther expects us to use the -s option with ranlib.
if ! $(RANLIB) { RANLIB = "ranlib" ; }
RANLIB += "-s" ;

# Experience seems to indicate that library scanning misbehaves on MacOS/X with
# Jam 2.4, consequently we disable it.
NOARSCAN = true ;

#------------------------------------------------------------------------------
# Public rules.
#------------------------------------------------------------------------------

# ConstructApplicationTarget target : options
#    Constructs the application target name.
rule ConstructApplicationTarget
{
  return $(<) ;
}

# ConstructStaticLibraryTarget target : options
#    Constructs the static library target name.
rule ConstructStaticLibraryTarget
{
  return lib$(<)$(SUFLIB) ;
}

# ConstructSharedLibraryTarget target : options
#    Constructs the shared library target name.
rule ConstructSharedLibraryTarget
{
  return lib$(<).$(PACKAGE_VERSION).dylib ; 
}

# ConstructSharedLibraryLinkLib target : options
#    Constructs the name of a shared library against which some other target
#    links.
rule ConstructSharedLibraryLinkLib
{
  return lib$(<).$(PACKAGE_VERSION).dylib ; 
}

# ConstructPluginTarget target : options
#    Constructs the plugin target name.
rule ConstructPluginTarget
{
    return $(<).csbundle ;
}

# SystemLinkApplication target : objects : options
#    Apply appropriate rule to link the application based upon the options.
rule SystemLinkApplication
{
    local target = $($(<)_TARGET) ;
    Depends $(target) : $(>) ;
    if [ IsElem console : $(3) ]
    {
        LinkApplicationConsole $(target) : $(>) ;
        Clean clean : $(target) ;
        Clean $(<)clean : $(target) ;
    }
    else
    {
        CreateApplicationWrapper $(target) : $(>) ;
        CleanDir clean : [ Wrapper $(<) : app ] ;
        CleanDir $(<)clean : [ Wrapper $(<) : app ] ;
    }
}

# SystemInstallApplication target : subdirs : options
#    Apply appropriate rule to install the application based upon the options.
rule SystemInstallApplication
{
    if [ IsElem console : $(3) ]
    {
        Depends install_bin : 
            [ DoInstall $(<) : $(bindir) $(2) : $(INSTALL_PROGRAM) ] ;
    }
    else
    {
        InstallApplicationGUI $(<) : $(bindir) $(2) ;
    }
}

# SystemInstallPlugin target : subdirs : options
#    Apply appropriate rule to install the plugin based upon the options.
rule SystemInstallPlugin
{
    Depends install_plugin :
	[ DoInstall $(<) : $(plugindir) $(2) : $(INSTALL_PROGRAM) ] ;
}

# SystemLinkPlugin target : objects : options
#    Link a plugin module and handle meta-data appropriately.
rule SystemLinkPlugin
{
    local target = $($(<)_TARGET) ;
    Depends $(target) : $(>) ;
    LinkPlugin $(target) : $(>) ;
    PluginMetaData $(<) : $($(<)_METAFILE) : $(3) ;
    Clean clean : $(target) ;
    Clean $(<)clean : $(target) ;
}

# LinkPlugin plugin : objects
#    Link a plugin module from a set of object files.
actions LinkPlugin bind NEEDLIBS bind EXTRAOBJECTS
{
    $(MACOSX_ENVIRONMENT)
    $(CMD.LINK) -bundle -o $(<) $(>) $(EXTRAOBJECTS) $(NEEDLIBS) $(LINKLIBS)
}

# LinkApplicationConsole exe : objects
#    Link a console (non-GUI) appliation from a set of object files.
actions LinkApplicationConsole bind NEEDLIBS bind EXTRAOBJECTS
{
    $(MACOSX_ENVIRONMENT)
    $(CMD.LINK) -o $(<) $(>) $(EXTRAOBJECTS) $(NEEDLIBS) $(LINKLIBS)
}

# CreateApplicationWrapper basename : objects
#    Create a complete, though minimal, application wrapper given a set of
#    object files.  The rules ApplicationIconDefault and ApplicationIcon
#    control the icon associated with the application wrapper.
rule CreateApplicationWrapper
{
    WrapFile $(<) : $(<) : Contents MacOS : AppExe : $(>) ;
    WrapFile $(<) : PkgInfo : Contents : AppPkgInfo : $(>) ;
    WrapFile $(<) : version.plist : Contents : AppVersionPlist : $(>) ;
    WrapFile $(<) : Info.plist : Contents : AppInfoPlist : $(>) ;
    WrapFile $(<) : InfoPlist.strings : Contents Resources English.lproj : 
        AppInfoPlistStrings : $(>) ;

    local icon = [ ApplicationIcon macosx : $(<) ] ;
    if ! $(icon)
    {
      local apptype = gui ;
      if [ IsElem console : $(>) ] { apptype = console ; }
      icon = [ ApplicationIconDefault macosx : $(apptype) ] ;
    }
    if $(icon)
    {
	$(<)_APPICON = $(icon) ;
        AppIcon $(<) : $(icon) ;
    }
}

# Wrapper basename : suffix [ : pathcomponents ]
#    Returns wrapper name in the directory specified by pathcomponents for
#    the given basename.  If pathcomponents is omitted, LOCATE.TARGETS is
#    used.
rule Wrapper
{
    local dir ;
    if $(3) { dir = [ FDirName $(3) ] ; }
    else { dir = $(LOCATE.TARGETS) ; }
    return [ FDirName $(dir) $(1).$(2) ] ;
}

# WrapFile basename : file : pathcomponents : rule [ : objects : [ suffix ] ]
#    Generate a file within a wrapper.  pathcomponents is a list of names
#    which compose the relative path within the wrapper where file should be
#    placed.  pathcomponents may be the empty list if the file should reside
#    at the top-level of the wrapper.  rule is rule/action which should be
#    invoked to generate file.  rule is invoked with arguments
#    <basename.suffix/pathcomponents/file>, <objects>, and <basename>.
#    objects is an optional list of files from which file should be built.  It
#    may be omitted if file does not depend upon any other files.  suffix is
#    the extension of the wrapper (not of file).  If suffix is omitted, "app"
#    is assumed.
#
#    Implementation note: If basename and file are the same, then we do not
#    grist file.  (Obviously, we also do not want to set the file dependent
#    upon itself.)  The reason we do not grist file in this case is that the
#    LinkWith, and LFlags rules associate the variables NEEDLIBS and
#    LINKLIBS with the ungristed name, therefore in order to get access to
#    these variables at AppExe action time, we must use the same (ungristed)
#    name.  It is otherwise impossible to gain access to those variables.
#    This is an unfortunate hack which pollutes the otherwise general-purpose
#    WrapFile rule.
rule WrapFile
{
    local suffix ;
    if $(6) { suffix = $(6) ; } else { suffix = app ; }
    local target = $(2) ;
    if $(target) != $(1)
    {
        target = $(target:G=$(1)) ;
        Depends $(1) : $(target) ;
    }
    local dir = [ FDirName [ Wrapper $(1) : $(suffix) ] $(3) ] ;
    MakeLocate $(target) : $(dir) ;
    if $(5) { Depends $(target) : $(5) ; }
    BASENAME on $(target) = $(1) ;
    $(4) $(target) : $(5) : $(1) ;

    Clean clean : [ FDirName $(dir) $(target) ] ;
    Clean $(1)clean : [ FDirName $(dir) $(target) ] ;
}

# LinkApplication exe : objects
actions AppExe bind NEEDLIBS bind EXTRAOBJECTS
{
    $(MACOSX_ENVIRONMENT)
    $(CMD.LINK) -o $(<) $(>) $(EXTRAOBJECTS) $(NEEDLIBS) $(LINKLIBS)
}

# AppPkgInfo file
actions AppPkgInfo
{
    echo 'APPL????' > $(<) ;
}

# AppInfoPlistStrings file
actions AppInfoPlistStrings
{
  cat << EOT > $(<)
CFBundleName = "$(BASENAME)";
CFBundleShortVersionString = "$(PACKAGE_VERSION)";
CFBundleGetInfoString = "$(BASENAME), $(PACKAGE_VERSION)";
EOT
}

# AppVersionPlist file
actions AppVersionPlist
{
  cat << EOT > $(<)
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist SYSTEM "file://localhost/System/Library/DTDs/PropertyList.dtd">
<plist version="0.9">
  <dict>
    <key>CFBundleShortVersionString</key>
    <string>$(PACKAGE_VERSION)</string>
    <key>CFBundleVersion</key>
    <string>$(PACKAGE_VERSION)</string>
    <key>ProjectName</key>
    <string>$(BASENAME)</string>
  </dict>
</plist>
EOT
}

# AppInfoPlist filename : placeholder : basename
#    Implementation Note: $(BASENAME)_APPICON might be empty in the actions of
#    this rule, if the client did not specify a default icon or a
#    target-specific icon, in which case we need to omit both the
#    CFBundleIconFile key and value.  To accomplish this, the key and value
#    are placed on a single line with no intervening whitespace.  When Jam
#    interpolates a variable, if the variable is empty, it removes all
#    adjacent text (the key and value, in this case) which is just what we
#    desire.
actions AppInfoPlist
{
  cat << EOT > $(<)
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist SYSTEM "file://localhost/System/Library/DTDs/PropertyList.dtd">
<plist version="0.9">
  <dict>
    <key>CFBundleDevelopmentRegion</key>
    <string>English</string>
    <key>CFBundleName</key>
    <string>$(BASENAME)</string>
    <key>CFBundleExecutable</key>
    <string>$(BASENAME)</string>
    <key>CFBundleIconFile</key><string>$($(BASENAME)_APPICON)</string>
    <key>CFBundleInfoDictionaryVersion</key>
    <string>6.0</string>
    <key>CFBundlePackageType</key>
    <string>APPL</string>
    <key>CFBundleSignature</key>
    <string>????</string>
    <key>CFBundleVersion</key>
    <string>0</string>
    <key>CFBundleShortVersionString</key>
    <string>$(PACKAGE_VERSION)</string>
    <key>NSPrincipalClass</key>
    <string>NSApplication</string>
  </dict>
</plist>
EOT
}

# AppIcon <basename> : <icon>
#    Copy an icon into the wrapper.  It is assumed that some other agent has
#    already set SEARCH on the icon, if necessary.
rule AppIcon
{
    local icon = $(>:G=$(<)) ;
    Depends $(<) : $(icon) ; 
    Depends $(icon) : $(>) ;
    MakeLocate $(icon) : 
      [ FDirName [ Wrapper $(<) : app ] Contents Resources ] ;
    Copy $(icon) : $(>) ;
    Clean clean : $(icon) ;
    Clean $(<)clean : $(icon) ;
}

# InstallApplicationGUI app : installdirs
#    Install a GUI application.  Unlike applications on other platforms which
#    exist as a single executable file, on MacOS/X, an application is wrapped
#    in a directory hierarchy, thus a deep copy is needed (i.e. the typical
#    Install rule does not work).
rule InstallApplicationGUI
{
    local wrapper = $(<).app ;
    Depends $(wrapper) : $(<) ;
    SEARCH on $(wrapper) = $(LOCATE.TARGETS) ;

    # Yuck! Internal knowledge of how DoInstall composes 'dir' and 'target'.
    local dir = [ ConcatDirs $(DESTDIR) $(2) ] ;
    local target = $(wrapper:BSR=$(dir):G=install) ;

    InstallApplicationWrapperPrepare $(target) ;
    Depends install_bin :
	[ DoInstall $(wrapper) : $(2) : "$(DEEPCOPY)" ] ; 
}

actions InstallApplicationWrapperPrepare
{
    $(DELTREE) $(<) ;
}