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2eb6750dbd
to Austin Bingham for the bug report. * new/project.jam (load): Don't mark project as loaded here. (load-jamfile): Mark it as loaded here. [SVN r20439]
609 lines
20 KiB
Plaintext
609 lines
20 KiB
Plaintext
# Copyright (C) Vladimir Prus and Rene Rivera 2002.
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# Permission to copy, use, modify, sell and
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# distribute this software is granted provided this copyright notice appears in
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# all copies. This software is provided "as is" without express or implied
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# warranty, and with no claim as to its suitability for any purpose.
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# Implements project representation and loading.
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# Each project is represented by
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# - a module where all the Jamfile content live.
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# - an instance of 'project-attributes' class.
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# (given module name, can be obtained by 'attributes' rule)
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# - an instance of 'project-target' class (from targets.jam)
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# (given a module name, can be obtained by 'target' rule)
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#
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# Typically, projects are created as result of loading Jamfile, which is
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# do by rules 'load' and 'initialize', below. First, module for Jamfile
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# is loaded and new project-attributes instance is created. Some rules
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# necessary for project are added to the module (see 'project-rules' module)
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# at the bottom of this file.
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# Default project attributes are set (inheriting attributes of parent project, if
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# it exists). After that, Jamfile is read. It can declare its own attributes,
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# via 'project' rule, which will be combined with already set attributes.
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#
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#
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# The 'project' rule can also declare project id, which will be associated with
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# the project module.
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#
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# There can also be 'standalone' projects. They are created by calling 'initialize'
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# on arbitrary module, and not specifying location. After the call, the module can
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# call 'project' rule, declare main target and behave as regular projects. However,
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# since it's not associated with any location, it's better declare only prebuilt
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# targets.
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#
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# The list of all loaded Jamfile is stored in variable .project-locations. It's possible
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# to obtain module name for a location using 'module-name' rule. The standalone projects
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# are not recorded, the only way to use them is by project id.
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import modules : peek poke ;
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import numbers ;
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import path ;
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import sequence ;
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import errors : error ;
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import project-roots ;
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import print ;
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import "class" : new ;
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import errors ;
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import assert ;
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import property-set ;
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#
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# Loads jamfile at the given location. After loading, project global
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# file and jamfile needed by the loaded one will be loaded recursively.
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# If the jamfile at that location is loaded already, does nothing.
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# Returns the project module for the Jamfile.
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#
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rule load ( jamfile-location )
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{
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# Load project root, first. It might decide to act as Jamfile.
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project-roots.load $(jamfile-location) ;
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local module-name = [ module-name $(jamfile-location) ] ;
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# If Jamfile is already loaded, don't try again.
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if ! $(module-name) in $(.jamfile-modules)
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{
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load-jamfile $(jamfile-location) ;
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for local p in [ attribute $(module-name) projects-to-build ]
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{
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load [ path.join $(jamfile-location) $(p) ] ;
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}
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}
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return $(module-name) ;
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}
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# Makes the specified 'module' act as if it were a regularly loaded Jamfile
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# at 'location'. If Jamfile is already located for that location, it's an
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# error.
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rule act-as-jamfile ( module : location )
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{
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if [ module-name $(location) ] in $(.jamfile-modules)
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{
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errors.error "Jamfile was already loaded for '$(location)'" ;
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}
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# Set up non-default mapping from location to module.
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.module.$(location) = $(module) ;
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# Add the location to the list of project locations
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# so that we don't try to load Jamfile in future
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.jamfile-modules += [ module-name $(location) ] ;
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initialize $(module) : $(location) ;
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}
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# Given 'name' which can be project-id or plain directory name,
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# return project module corresponding to that id or directory.
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# Returns nothing of project is not found.
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rule find ( name : current-location )
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{
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local project-module ;
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# Try interpreting name as project id.
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if [ path.is-rooted $(name) ]
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{
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project-module = $($(name).jamfile-module) ;
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}
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if ! $(project-module)
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{
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local location = [ path.root $(name) $(current-location) ] ;
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# If no project is registered for the given location, try to
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# load it. First see if we have Jamfile. If not we might have project
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# root, willing to act as Jamfile. In that case, project-root
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# must be placed in the directory referred by id.
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project-module = [ module-name $(location) ] ;
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if ! $(project-module) in $(.jamfile-modules)
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{
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if [ find-jamfile $(location) ]
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{
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project-module = [ load $(location) ] ;
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}
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else
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{
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project-module = ;
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}
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}
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}
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return $(project-module) ;
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}
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#
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# Returns the name of module corresponding to 'jamfile-location'.
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# If no module corresponds to location yet, associates default
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# module name with that location.
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#
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rule module-name ( jamfile-location )
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{
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if ! $(.module.$(jamfile-location))
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{
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# Root the path, so that locations are always umbiguious.
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# Without this, we can't decide if '../../exe/program1' and '.'
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# are the same paths, or not.
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jamfile-location = [ path.root $(jamfile-location) [ path.pwd ] ] ;
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.module.$(jamfile-location) = Jamfile<$(jamfile-location)> ;
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}
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return $(.module.$(jamfile-location)) ;
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}
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# Default patterns to search for the Jamfiles to use for build
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# declarations.
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#
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JAMFILE = [ modules.peek : JAMFILE ] ;
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JAMFILE ?= [Jj]amfile.v2 [Jj]amfile [Jj]amfile.jam ;
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# Find the Jamfile at the given location. This returns the exact names of
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# all the Jamfiles in the given directory. The optional parent-root argument
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# causes this to search not the given directory but the ones above it up
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# to the directory given in it.
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#
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local rule find-jamfile (
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dir # The directory(s) to look for a Jamfile.
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parent-root ? # Optional flag indicating to search for the parent Jamfile.
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)
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{
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# Glob for all the possible Jamfiles according to the match pattern.
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#
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local jamfile-glob = ;
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if $(parent-root)
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{
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if ! $(.parent-jamfile.$(dir))
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{
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.parent-jamfile.$(dir) =
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[ path.glob-in-parents $(dir) : $(JAMFILE) : $(parent-root) ] ;
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}
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jamfile-glob = $(.parent-jamfile.$(dir)) ;
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}
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else
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{
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if ! $(.jamfile.$(dir))
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{
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.jamfile.$(dir) = [ path.glob $(dir) : $(JAMFILE) ] ;
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}
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jamfile-glob = $(.jamfile.$(dir)) ;
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}
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return $(jamfile-glob) ;
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}
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# Load a Jamfile at the given directory. Returns nothing.
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# Will attempt to load the file as indicated by the JAMFILE patterns.
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# Effect of calling this rule twice with the same 'dir' is underfined.
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local rule load-jamfile (
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dir # The directory of the project Jamfile.
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)
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{
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# See if the Jamfile is where it should be.
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#
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local jamfile-to-load = [ find-jamfile $(dir) ] ;
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# Could not find it, error.
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#
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if ! $(jamfile-to-load)
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{
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errors.error
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"Unable to load Jamfile." :
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"Could not find a Jamfile in directory '$(dir)'". :
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"Attempted to find it with pattern '"$(JAMFILE:J=" ")"'." :
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"Please consult the documentation at 'http://www.boost.org'." ;
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}
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# Multiple Jamfiles found in the same place. Warn about this.
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# And ensure we use only one of them.
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# As a temporary convenience measure, if there's Jamfile.v2 amount
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# found files, suppress the warning and use it.
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#
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if $(jamfile-to-load[2-])
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{
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local v2-jamfiles = [ MATCH (.*[Jj]amfile\\.v2) : $(jamfile-to-load) ] ;
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if $(v2-jamfiles) && ! $(v2-jamfiles[2])
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{
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jamfile-to-load = $(v2-jamfiles) ;
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}
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else
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{
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ECHO
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"WARNING: Found multiple Jamfiles at this '"$(dir)"' location!"
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"Loading the first one: '" [ path.basename $(jamfile-to-load[1]) ] "'." ;
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}
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jamfile-to-load = $(jamfile-to-load[1]) ;
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}
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# The module of the jamfile.
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#
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local jamfile-module = [ module-name [ path.parent $(jamfile-to-load) ] ] ;
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# Initialize the jamfile module before loading.
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#
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initialize $(jamfile-module) : [ path.parent $(jamfile-to-load) ] ;
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# Now load the Jamfile in it's own context.
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# Initialization might have load parent Jamfiles, which might have
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# loaded the current Jamfile with use-project. Do a final check to make
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# sure it's not loaded already.
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if ! $(jamfile-module) in $(.jamfile-modules)
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{
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.jamfile-modules += $(jamfile-module) ;
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modules.load $(jamfile-module) : [ path.native $(jamfile-to-load) ] : . ;
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}
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}
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# Initialize the module for a project.
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#
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rule initialize (
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module-name # The name of the project module.
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: location ? # The location (directory) of the project to initialize.
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# If not specified, stanalone project will be initialized.
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)
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{
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# TODO: need to consider if standalone projects can do anything but defining
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# prebuilt targets. If so, we need to give more sensible "location", so that
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# source paths are correct.
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location ?= "" ;
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# Create the module for the Jamfile first.
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module $(module-name)
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{
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}
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$(module-name).attributes = [ new project-attributes $(location) ] ;
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local attributes = $($(module-name).attributes) ;
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$(attributes).set source-location : $(location) : exact ;
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$(attributes).set requirements : [ property-set.empty ] : exact ;
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$(attributes).set usage-requirements : [ property-set.empty ] : exact ;
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# Import rules common to all project modules from project-rules module,
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# defined at the end of this file.
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modules.clone-rules project-rules $(module-name) ;
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# We search for parent/project-root only if jamfile was specified --- i.e
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# if the project is not standalone.
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if $(location)
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{
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# Make sure we've loaded the project-root corresponding to this
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# Jamfile.
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#
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local project-root-module = [ project-roots.load $(location) ] ;
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local project-root = [ $(project-root-module).project-root get-location ] ;
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$(attributes).set project-root-module : $(project-root-module) : exact ;
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local parent = [ find-jamfile $(location) $(project-root) ] ;
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local parent-module = ;
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if $(parent)
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{
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parent-module = [ load [ path.parent $(parent[1]) ] ] ;
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}
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inherit-attributes $(module-name) : $(project-root-module) : $(parent-module) ;
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}
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}
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# Make 'project-module' inherit attributes of project root and parent module.
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rule inherit-attributes ( project-module : project-root-module : parent-module ? )
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{
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# Register with the project root. This will inject project-root
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# constants and do some other initialization.
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$(project-root-module).project-root register-project $(project-module) ;
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if $(parent-module)
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{
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local attributes = $($(project-module).attributes) ;
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local pattributes = [ attributes $(parent-module) ] ;
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$(attributes).set parent : [ path.parent
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[ path.make [ modules.binding $(parent-module) ] ] ] ;
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$(attributes).set default-build
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: [ $(pattributes).get default-build ] ;
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$(attributes).set requirements
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: [ $(pattributes).get requirements ] : exact ;
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$(attributes).set usage-requirements
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: [ $(pattributes).get usage-requirements ] : exact ;
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local parent-build-dir = [ $(pattributes).get build-dir ] ;
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if $(parent-build-dir)
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{
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# Have to compute relative path from parent dir to our dir
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# Convert both paths to absolute, since we cannot
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# find relative path from ".." to "."
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local location = [ attribute $(project-module) location ] ;
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local parent-location = [ attribute $(parent-module) location ] ;
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local pwd = [ path.pwd ] ;
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local parent-dir = [ path.root $(parent-location) $(pwd) ] ;
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local our-dir = [ path.root $(location) $(pwd) ] ;
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$(attributes).set build-dir : [ path.join $(parent-build-dir)
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[ path.relative $(our-dir) $(parent-dir) ] ] : exact ;
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}
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}
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}
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# Associate the given id with the given project module
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rule register-id ( id : module )
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{
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$(id).jamfile-module = $(module) ;
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}
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# Class keeping all the attributes of a project.
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#
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# The standard attributes are "id", "location", "project-root", "parent"
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# "requirements", "default-build", "source-location" and "projects-to-build".
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class project-attributes
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{
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import property ;
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import property-set ;
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import errors ;
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import path ;
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import print ;
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import sequence ;
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rule __init__ ( location )
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{
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self.location = $(location) ;
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}
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# Set the named attribute from the specification given by the user.
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# The value actually set may be different.
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rule set ( attribute : specification *
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: exact ? # Sets value from 'specification' without any processing
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)
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{
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if $(exact)
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{
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self.$(attribute) = $(specification) ;
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}
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else if $(attribute) = "requirements"
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{
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specification = [ property.translate-paths $(specification)
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: $(self.location) ] ;
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specification = [ property.make $(specification) ] ;
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result = [ property-set.create $(specification) ] ;
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# If we have inherited properties, need to refine them with the
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# specified.
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local current = $(self.requirements) ;
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if $(current)
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{
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result = [ $(current).refine $(result) ] ;
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}
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if $(result[1]) = "@error"
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{
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errors.error
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"Requirements for project at '$(self.location)'"
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"conflict with parent's." :
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"Explanation: " $(result[2-]) ;
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}
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else
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{
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self.requirements = $(result) ;
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}
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}
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else if $(attribute) = "usage-requirements"
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{
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local unconditional ;
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for local p in $(specification)
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{
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local split = [ property.split-conditional $(p) ] ;
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split ?= nothing $(p) ;
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unconditional += $(split[2]) ;
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}
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local non-free = [ property.remove free : $(unconditional) ] ;
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if $(non-free)
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{
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errors.error "usage-requirements" $(specification) "have non-free properties" $(non-free) ;
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}
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local t = [ property.translate-paths $(specification)
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: $(self.location) ] ;
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if $(self.usage-requirements)
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{
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self.usage-requirements = [ property-set.create
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[ $(self.usage-requirements).raw ] $(t) ] ;
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}
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else
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{
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self.usage-requirements = [ property-set.create $(t) ] ;
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}
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}
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else if $(attribute) = "default-build"
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{
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self.default-build = [ property.make $(specification) ] ;
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}
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else if $(attribute) = "source-location"
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{
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self.source-location = [ path.root $(specification) $(self.location) ] ;
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}
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else if $(attribute) = "build-dir"
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{
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self.build-dir = [ path.root $(specification) $(self.location) ] ;
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}
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else if ! $(attribute) in "id" "default-build" "location" "source-location"
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"parent" "projects-to-build"
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{
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errors.error "Invalid project attribute '$(attribute)' specified "
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"for project at '$(self.location)'" ;
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}
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else
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{
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self.$(attribute) = $(specification) ;
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}
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}
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# Returns the value of the given attribute.
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rule get ( attribute )
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{
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return $(self.$(attribute)) ;
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}
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# Prints the project attributes.
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rule print ( )
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{
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local id = $(self.id) ; id ?= (none) ;
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local parent = $(self.parent) ; parent ?= (none) ;
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print.section "'"$(id)"'" ;
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print.list-start ;
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print.list-item "Parent project:" $(parent) ;
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print.list-item "Requirements:" [ $(self.requirements).raw ] ;
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print.list-item "Default build:" $(self.default-build) ;
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print.list-item "Source location:" $(self.source-location) ;
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print.list-item "Projects to build:"
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[ sequence.insertion-sort $(self.projects-to-build) ] ;
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print.list-end ;
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}
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}
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# Returns the project-attribute instance for the specified jamfile module.
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rule attributes ( project )
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{
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return $($(project).attributes) ;
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}
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# Returns the value of the specified attribute in the specified jamfile module.
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rule attribute ( project attribute )
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{
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return [ $($(project).attributes).get $(attribute) ] ;
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}
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# Returns the project target corresponding to the 'project-module'.
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rule target ( project-module )
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{
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if ! $(.target.$(project-module))
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{
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.target.$(project-module) = [ new project-target $(project-module)
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: $(project-module)
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: [ attribute $(project-module) requirements ] ] ;
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}
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return $(.target.$(project-module)) ;
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}
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# If 'path' is absolute, returns it.
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# Oherwise, returns the location of 'project', joined
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# with 'path'
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rule path-relative-to-project-location ( path project )
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{
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local project-location = [ attribute $(project) location ] ;
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return [ path.root $(path) $(project-location) ] ;
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}
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# Use/load a project.
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rule use ( id : location )
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{
|
|
local project-module = [ project.load $(location) ] ;
|
|
local declared-id = [ project.attribute $(project-module) id ] ;
|
|
|
|
if ! $(declared-id)
|
|
{
|
|
error "project loaded by 'use-project' has no project-id." ;
|
|
}
|
|
if $(declared-id) != $(id)
|
|
{
|
|
error project \"$(declared-id)\" at \"$(location)\" redeclared with id \"$(id)\". ;
|
|
}
|
|
}
|
|
|
|
# This module defines rules common to all projects
|
|
module project-rules
|
|
{
|
|
rule project ( id ? : options * : * )
|
|
{
|
|
import project ;
|
|
import path ;
|
|
|
|
local attributes = [ project.attributes $(__name__) ] ;
|
|
if $(id)
|
|
{
|
|
id = [ path.root $(id) / ] ;
|
|
project.register-id $(id) : $(__name__) ;
|
|
$(attributes).set id : $(id) ;
|
|
}
|
|
|
|
for n in 2 3 4 5 6 7 8 9
|
|
{
|
|
local option = $($(n)) ;
|
|
if $(option)
|
|
{
|
|
$(attributes).set $(option[1]) : $(option[2-]) ;
|
|
}
|
|
}
|
|
}
|
|
|
|
rule use-project ( id : where )
|
|
{
|
|
import project ;
|
|
import path ;
|
|
local attributes = [ project.attributes $(__name__) ] ;
|
|
project.use $(id) : [ path.root
|
|
[ path.make $(where) ] [ $(attributes).get location ] ] ;
|
|
}
|
|
|
|
rule build-project ( dir )
|
|
{
|
|
import project ;
|
|
local attributes = [ project.attributes $(__name__) ] ;
|
|
|
|
local now = [ $(attributes).get projects-to-build ] ;
|
|
$(attributes).set projects-to-build : $(now) $(dir) ;
|
|
}
|
|
|
|
rule explicit ( target-names * )
|
|
{
|
|
import project ;
|
|
local t = [ project.target $(__name__) ] ;
|
|
for local n in $(target-names)
|
|
{
|
|
$(t).mark-target-as-explicit $(n) ;
|
|
}
|
|
}
|
|
|
|
rule glob ( wildcards + )
|
|
{
|
|
import path ;
|
|
import project ;
|
|
|
|
local location = [ project.attribute $(__name__) location ] ;
|
|
local all-paths = [ path.glob $(location) : $(wildcards) ] ;
|
|
return $(all-paths:D="") ;
|
|
}
|
|
}
|
|
|
|
|
|
local rule __test__ ( )
|
|
{
|
|
import assert ;
|
|
assert.result foo/bar : remove-trailing-slash foo/bar/ ;
|
|
assert.result foo/bar : remove-trailing-slash foo/bar ;
|
|
assert.result foo : remove-trailing-slash foo/ ;
|
|
assert.result foo : remove-trailing-slash foo ;
|
|
}
|