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-rw-r--r--libbuild2/forward.hxx1
1 files changed, 1 insertions, 0 deletions
diff --git a/libbuild2/forward.hxx b/libbuild2/forward.hxx
index d2b8989..057ab24 100644
--- a/libbuild2/forward.hxx
+++ b/libbuild2/forward.hxx
@@ -26,6 +26,7 @@ namespace build2
struct variable;
class variable_pool;
+ class variable_patterns;
class variable_map;
struct variable_override;
using variable_overrides = vector<variable_override>;