mirror of
https://github.com/bulletphysics/bullet3
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86 lines
3.1 KiB
Plaintext
86 lines
3.1 KiB
Plaintext
#============================================================================
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# Rules for collecting and emitting descriptions about targets
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# Copyright (C)2003 by Matze Braun <matzebraun@users.sourceforge.net>
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# Copyright (C)2004 by Eric Sunshine <sunshine@sunshineco.com>
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#
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# This library is free software; you can redistribute it and/or modify it
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# under the terms of the GNU Library General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or (at your
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# option) any later version.
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#
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# This library is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
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# License for more details.
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#
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# You should have received a copy of the GNU Library General Public License
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# along with this library; if not, write to the Free Software Foundation,
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# Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#
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#============================================================================
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## Description target [ : description ]
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## Provides access to the description of 'target'. The description may be
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## used by other rules, such as those which generate project files, or which
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## present informative messages to the user regarding 'target'. If invoked
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## with two arguments, then it sets the description of 'target'. If invoked
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## with one argument, then it returns the description of 'target'. You
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## should invoke this rule to set the description before invoking other
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## rules which might need access to target's description, such as the
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## Application, Library, and Plugin rules. As a convenience, several generic
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## rules, such as Application, Library, and Plugin will automatically invoke
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## the Help rule for 'target' using the provided 'description'.
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rule Description
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{
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local desc = $(>) ;
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if $(desc)
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{
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$(<)_description = $(desc) ;
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}
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else
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{
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desc = $($(<)_description) ;
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}
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return $(desc) ;
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}
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## Help target : description
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## Specify the 'description' to emit for 'target' when the user invokes "jam
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## help".
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rule Help
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{
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local target = $(<) ;
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local desc = $(>) ;
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if ! $(target) { target = "" ; }
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if ! $(desc) { desc = "" ; }
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# target width:20, description width:54
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local target_pad = " " ;
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local target_pat = "...................." ;
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local desc_pad = " " ;
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local desc_pat = "......................................................" ;
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local m = Match ; # Indirect invocation allows variables in pattern regex.
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local target_str = [ $(m) "($(target_pat)).*" : "$(target)$(target_pad)" ] ;
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local desc_str = [ $(m) "($(desc_pat)).*" : "$(desc)$(desc_pad)" ] ;
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local help = "jam $(target_str) $(desc_str)" ;
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target = $(target:G=help) ;
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Depends help : $(target) ;
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NotFile $(help) ;
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PrintHelp $(target) : $(help) ;
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Always $(target) ;
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NotFile $(target) ;
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}
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actions quietly PrintHelp
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{
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echo "$(>)"
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}
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NotFile help ;
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Always help ;
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Help all : "Build the entire project" ;
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