diff options
Diffstat (limited to 'libbuild2/cc/common.cxx')
| -rw-r--r-- | libbuild2/cc/common.cxx | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/libbuild2/cc/common.cxx b/libbuild2/cc/common.cxx index 587ae08..d24eb02 100644 --- a/libbuild2/cc/common.cxx +++ b/libbuild2/cc/common.cxx @@ -528,6 +528,8 @@ namespace build2 assert (p.scope != nullptr); + context& ctx (p.scope->ctx); + // @@ This is hairy enough to warrant a separate implementation for // Windows. @@ -800,11 +802,25 @@ namespace build2 // if (build_installed && p.proj && *p.proj == "build2") { - // Note that we prepend it to other user directories instead of - // making it the only one to allow things to be overriden (e.g., if - // build2 was moved or some such). + const scope& rs (*p.scope->root_scope ()); + + // Check if import.build2 is set to NULL to disable relying on the + // built-in path. We use this in our tests to make sure we are + // importing and testing the build system being built and not the + // one doing the building. + // + // Note that for the installed case this value is undefined by + // default. // - usrd->insert (usrd->begin (), build_install_lib); + lookup l (rs[ctx.var_import_build2]); + if (!(l.defined () && l->null)) + { + // Note that we prepend it to other user directories instead of + // making it the only one to allow things to be overriden (e.g., + // if build2 was moved or some such). + // + usrd->insert (usrd->begin (), build_install_lib); + } } } @@ -840,8 +856,7 @@ namespace build2 // Enter (or find) the lib{} target group. // lib* lt; - insert_library ( - p.scope->ctx, lt, name, *pd, l ? p.tk.ext : nullopt, exist, trace); + insert_library (ctx, lt, name, *pd, l ? p.tk.ext : nullopt, exist, trace); // Result. // |