diff options
| author | Boris Kolpackov <boris@codesynthesis.com> | 2017-12-13 14:20:54 +0200 |
|---|---|---|
| committer | Boris Kolpackov <boris@codesynthesis.com> | 2017-12-13 14:22:07 +0200 |
| commit | f11d720f2fb62b46ad17d3aa3850140a4839f114 (patch) | |
| tree | 7b077efc16b0362283e1857cf974090ee4ce8f26 /build2/variable.hxx | |
| parent | 08688bfc12a42a0399bcbdd6fe7d30d8f2486775 (diff) | |
Implement info meta operation
This meta operation can be used to print basic information (name, version,
source/output roots, etc) for one or more projects.
Diffstat (limited to 'build2/variable.hxx')
| -rw-r--r-- | build2/variable.hxx | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/build2/variable.hxx b/build2/variable.hxx index bba2208..51cc350 100644 --- a/build2/variable.hxx +++ b/build2/variable.hxx @@ -546,6 +546,14 @@ namespace build2 static int simple_compare (const value&, const value&); + // names + // + template <> + struct value_traits<names> + { + static const names& empty_instance; + }; + // bool // template <> @@ -783,6 +791,8 @@ namespace build2 static void prepend (value&, vector<T>&&); static bool empty (const vector<T>& x) {return x.empty ();} + static const vector<T> empty_instance; + // Make sure these are static-initialized together. Failed that VC will // make sure it's done in the wrong order. // @@ -809,6 +819,8 @@ namespace build2 return append (v, move (x));} static bool empty (const map<K, V>& x) {return x.empty ();} + static const map<K, V> empty_instance; + // Make sure these are static-initialized together. Failed that VC will // make sure it's done in the wrong order. // |