diff options
Diffstat (limited to 'libbuild2/build/script/parser.hxx')
| -rw-r--r-- | libbuild2/build/script/parser.hxx | 60 |
1 files changed, 55 insertions, 5 deletions
diff --git a/libbuild2/build/script/parser.hxx b/libbuild2/build/script/parser.hxx index da15509..bbdb052 100644 --- a/libbuild2/build/script/parser.hxx +++ b/libbuild2/build/script/parser.hxx @@ -127,6 +127,46 @@ namespace build2 dd, &update, &deferred_failure, mt); } + // This version doesn't actually execute the depdb-dyndep builtin (but + // may execute some variable assignments) instead returning all the + // information (extracted from options) necessary to implement the + // depdb-dyndep --byproduct logic (which fits better into the rule + // implementation). + // + enum class dyndep_format {make}; + + struct dyndep_byproduct + { + location_value location; + dyndep_format format; + optional<dir_path> cwd; + path file; + string what; + const target_type* default_type; + }; + + dyndep_byproduct + execute_depdb_preamble_dyndep_byproduct ( + action a, const scope& base, const file& t, + environment& e, const script& s, runner& r, + depdb& dd) + { + // This is getting really ugly (we also don't really need to pass + // depdb here). One day we will find a better way... + // + bool update, deferred_failure; // Dymmy. + timestamp mt; // Dummy. + + dyndep_byproduct v; + exec_depdb_preamble ( + a, base, t, + e, s, r, + s.depdb_preamble.begin () + *s.depdb_dyndep, + s.depdb_preamble.end (), + dd, &update, &deferred_failure, mt, &v); + return v; + } + // Parse a special builtin line into names, performing the variable // and pattern expansions. If omit_builtin is true, then omit the // builtin name from the result. @@ -166,7 +206,8 @@ namespace build2 depdb&, bool* update = nullptr, bool* deferred_failure = nullptr, - optional<timestamp> mt = nullopt); + optional<timestamp> mt = nullopt, + dyndep_byproduct* = nullptr); void exec_depdb_dyndep (token&, build2::script::token_type&, @@ -175,7 +216,8 @@ namespace build2 depdb&, bool& update, bool& deferred_failure, - timestamp); + timestamp, + dyndep_byproduct*); // Helpers. // @@ -274,13 +316,21 @@ namespace build2 // depdb env <var-names> - Track the environment variables change as a // hash. // - // depdb dyndep ... - Extract dynamic dependency information. - // Can only be the last depdb builtin call - // in the preamble. + // depdb dyndep ... - Extract dynamic dependency information. Can + // only be the last depdb builtin call in the + // preamble. Note that such dependencies don't + // end up in $<. We also don't cause clean of + // such dependencies (since there may be no .d + // file) -- they should also be listed as + // static prerequisites of some other target + // (e.g., lib{} for headers) or a custom clean + // recipe should be provided. + // // optional<location> depdb_clear_; // depdb-clear location. optional<pair<location, size_t>> depdb_dyndep_; // depdb-dyndep location/position. + bool depdb_dyndep_byproduct_ = false; // --byproduct lines depdb_preamble_; // Note: excluding depdb-clear. // If present, the first impure function called in the body of the |