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-rw-r--r--libbuild2/cc/module.cxx4
1 files changed, 3 insertions, 1 deletions
diff --git a/libbuild2/cc/module.cxx b/libbuild2/cc/module.cxx
index 98e0451..44f1943 100644
--- a/libbuild2/cc/module.cxx
+++ b/libbuild2/cc/module.cxx
@@ -154,7 +154,9 @@ namespace build2
// we are now folding *.std options into mode options.
//
x_info = &build2::cc::guess (
- x, x_lang, move (xc),
+ x, x_lang,
+ rs.root_extra->environment_checksum,
+ move (xc),
cast_null<string> (lookup_config (rs, config_x_id)),
cast_null<string> (lookup_config (rs, config_x_version)),
cast_null<string> (lookup_config (rs, config_x_target)),