ceph/src/boost/libs/numeric/ublas/opencl.jam

   1 # Copyright (c) 2018 Stefan Seefeld
   2 #
   3 # Use, modification and distribution is subject to the Boost Software
   4 # License Version 1.0. (See accompanying file LICENSE_1_0.txt or
   5 # http://www.boost.org/LICENSE_1_0.txt)
   6
   7 # Supports the opencl library
   8 #
   9 # After 'using opencl', the following targets are available:
  10 #
  11 # /opencl//opencl -- The OpenCL library
  12
  13 import project ;
  14 import ac ;
  15 import errors ;
  16 import feature ;
  17 import "class" : new ;
  18 import targets ;
  19 import modules ;
  20 import property-set ;
  21
  22 header = CL/cl.h ;
  23 names = OpenCL ;
  24
  25 library-id = 0 ;
  26
  27 if --debug-configuration in [ modules.peek : ARGV ]
  28 {
  29     .debug =  true ;
  30 }
  31
  32 # Initializes the opencl library.
  33 #
  34 # Options for configuring opencl::
  35 #
  36 #   <search>
  37 #       The directory containing the OpenCL library.
  38 #   <name>
  39 #       Overrides the default library name.
  40 #   <include>
  41 #       The directory containing the OpenCL headers.
  42 #
  43 # Examples::
  44 #
  45 #   # Find OpenCL in the default system location
  46 #   using opencl ;
  47 #   # Find opencl in /usr/local
  48 #   using opencl : 1.2.7
  49 #     : <include>/usr/local/include <search>/usr/local/lib ;
  50 #
  51 rule init ( version ? : # The opencl version (currently ignored)
  52             options * : # A list of the options to use
  53             requirements * ) # The requirements for the opencl target
  54 {
  55     local caller = [ project.current ] ;
  56
  57     if ! $(.initialized)
  58     {
  59         .initialized = true ;
  60
  61         project.initialize $(__name__) ;
  62         .project = [ project.current ] ;
  63         project opencl ;
  64     }
  65
  66     local library-path = [ feature.get-values <search> : $(options) ] ;
  67     local include-path = [ feature.get-values <include> : $(options) ] ;
  68     local library-name = [ feature.get-values <name> : $(options) ] ;
  69
  70     if ! $(library-path) && ! $(include-path) && ! $(library-name)
  71     {
  72         is-default = true ;
  73     }
  74
  75     condition = [ property-set.create $(requirements) ] ;
  76     condition = [ property-set.create [ $(condition).base ] ] ;
  77
  78     if $(.configured.$(condition))
  79     {
  80         if $(is-default)
  81         {
  82             if $(.debug)
  83             {
  84                 ECHO "notice: [opencl] opencl is already configured" ;
  85             }
  86         }
  87         else
  88         {
  89             errors.user-error "opencl is already configured" ;
  90         }
  91         return ;
  92     }
  93     else
  94     {
  95         if $(.debug)
  96         {
  97             ECHO "notice: [opencl] Using pre-installed library" ;
  98             if $(condition)
  99             {
 100                 ECHO "notice: [opencl] Condition" [ $(condition).raw ] ;
 101             }
 102         }
 103
 104         local mt = [ new ac-library opencl : $(.project) : $(condition) :
 105             $(include-path) : $(library-path) : $(library-name) ] ;
 106         $(mt).set-header $(header) ;
 107         $(mt).set-default-names $(names) ;
 108         targets.main-target-alternative $(mt) ;
 109     }
 110     .configured.$(condition) = true ;
 111 }