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-rw-r--r--build/b.cxx7
1 files changed, 7 insertions, 0 deletions
diff --git a/build/b.cxx b/build/b.cxx
index 1650a73..593fbc1 100644
--- a/build/b.cxx
+++ b/build/b.cxx
@@ -296,6 +296,13 @@ main (int argc, char* argv[])
if (!src_base.empty ())
{
+ // Make sure it exists. While we will fail further down
+ // if it doesn't, the diagnostics could be confusing (e.g.,
+ // unknown operation because we don't load bootstrap.build).
+ //
+ if (!dir_exists (src_base))
+ fail << "src_base directory " << src_base << " does not exist";
+
if (src_base.relative ())
src_base = work / src_base;