diff options
Diffstat (limited to 'build2/target')
| -rw-r--r-- | build2/target | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/build2/target b/build2/target index c672dc9..1a1fd8d 100644 --- a/build2/target +++ b/build2/target @@ -1428,6 +1428,12 @@ namespace build2 return const_cast<path_target*> (this)->derive_path (); // MT-aware. } + const string& + derive_extension () const + { + return const_cast<path_target*> (this)->derive_extension (); // MT-aware. + } + public: static const target_type static_type; @@ -1526,6 +1532,33 @@ namespace build2 virtual const target_type& dynamic_type () const {return static_type;} }; + // This is the venerable .in ("input") file that needs some kind of + // preprocessing. + // + // One interesting aspect of this target type is that the prerequisite + // search is target-dependent. Consider: + // + // hxx{version}: in{version.hxx} // version.hxx.in -> version.hxx + // + // Having to specify the header extension explicitly is inelegant. Instead + // what we really want to write is this: + // + // hxx{version}: in{version} + // + // But how do we know that in{version} means version.hxx.in? That's where + // the target-dependent search comes in: we take into account the target + // we are a prerequisite of. + // + class in: public file + { + public: + using file::file; + + public: + static const target_type static_type; + virtual const target_type& dynamic_type () const {return static_type;} + }; + // Common documentation file targets. // // @@ Maybe these should be in the built-in doc module? |