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Somewhat improve the error we get when generators.jam can build a

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target.


[SVN r30537]
This commit is contained in:
Vladimir Prus 2005-08-12 11:49:01 +00:00
parent ca20405506
commit 5641492639
2 changed files with 16 additions and 3 deletions
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2
src/build/generators.jam
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@ -999,7 +999,7 @@ local rule find-viable-generators-aux ( target-type : property-set )
return $(viable-generators) ;
}
local rule find-viable-generators ( target-type : property-set )
rule find-viable-generators ( target-type : property-set )
{
local key = $(target-type).$(property-set) ;
local l = $(.fv.$(key)) ;

17
src/build/targets.jam
View File

@ -1241,8 +1241,21 @@ class typed-target : basic-target
# ]
: $(source-targets) ] ;
if ! $(r)
{
errors.error "unable to construct" [ full-name ] ;
{
ECHO "error: unable to construct " [ full-name ] ;
# Are there any top-level generators for this type/property set.
if ! [ generators.find-viable-generators
$(self.type) : $(property-set) ]
{
ECHO "error: no generators were found for type '$(self.type)'" ;
ECHO "error: and the requested properties" ;
ECHO "error: make sure you've configured the needed tools" ;
ECHO "See http://boost.org/boost-build2/doc/html/bbv2/advanced/configuration.html" ;
}
ECHO "To debug this problem, try the --debug-generators option." ;
EXIT ;
}
return $(r) ;