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Avoid generating massive numbers of <implicit-dependency>s as this causes a significant performance cost.

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Steven Watanabe 2016-02-25 13:42:49 -07:00 • committed by Peter Dimov
parent a233bccaef
commit 000f1c3a0d
1 changed files with 19 additions and 1 deletions
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20
Jamroot
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@ -129,6 +129,10 @@ import xsltproc ;
import set ;
import path ;
import link ;
import notfile ;
import virtual-target ;
import "class" : new ;
import property-set ;
import threadapi-feature ;
path-constant BOOST_ROOT : . ;
@ -246,7 +250,21 @@ for local l in $(all-libraries)
# Log has an additional target
explicit-alias log_setup : libs/log/build//boost_log_setup ;
alias headers : $(all-headers)-headers : : : <include>. ;
rule do-nothing { }
rule generate-alias ( project name : property-set : sources * )
{
local action-name = [ $(property-set).get <action> ] ;
local m = [ MATCH ^@(.*) : $(action-name) ] ;
property-set = [ property-set.empty ] ;
local action = [ new action $(sources) : $(m[1]) : $(property-set) ] ;
local t = [ new notfile-target $(name) : $(project) : $(action) ] ;
return [ virtual-target.register $(t) ] ;
}
generate headers : $(all-headers)-headers : <generating-rule>@generate-alias <action>@do-nothing : : <include>. ;
#alias headers : $(all-headers)-headers : : : <include>. ;
explicit headers ;
# Make project ids of all libraries known.