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Diffstat (limited to 'libbuild2/config/utility.hxx')
| -rw-r--r-- | libbuild2/config/utility.hxx | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/libbuild2/config/utility.hxx b/libbuild2/config/utility.hxx index 614791f..fb3023b 100644 --- a/libbuild2/config/utility.hxx +++ b/libbuild2/config/utility.hxx @@ -311,6 +311,20 @@ namespace build2 // be used to "remember" that the module is left unconfigured in order to // avoid re-running the tests, etc. // + // @@ This functionality is WIP/unused and still has a number of issues: + // + // - This seems to be a subset of a bigger problem of caching discovered + // configuration results. In fact, what we do in the configured case, + // for example in the cc module (multiple path extraction runs, etc), is + // a lot more expensive. + // + // - The current semantics does not work well for the case where, say, the + // missing tool has appeared in PATH and can now be used via the default + // configuration. In fact, even reconfiguring will not help without a + // "nudge" (e.g., config.<tool>=<tool>). So maybe this value should be + // ignored during configuration? See the "Tool importation: unconfigured + // state" page for more notes. + // LIBBUILD2_SYMEXPORT bool unconfigured (scope& rs, const string& var); |