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-rw-r--r--build2/cli/init.cxx37
1 files changed, 25 insertions, 12 deletions
diff --git a/build2/cli/init.cxx b/build2/cli/init.cxx
index 8e0abdb..4ad8a1a 100644
--- a/build2/cli/init.cxx
+++ b/build2/cli/init.cxx
@@ -100,7 +100,8 @@ namespace build2
//
process_path pp;
- // Return version or empty string if the cli executable is not found.
+ // Return version or empty string if the cli executable is not found
+ // or is not the command line interface compiler.
//
// @@ This needs some more thinking/cleanup. Specifically, what does
// it mean "cli not found"? Is it just not found in PATH? That plus
@@ -129,23 +130,35 @@ namespace build2
{
ifdstream is (move (pr.in_ofd), fdstream_mode::skip);
- // The version should be the last word on the first line.
+ // The version should be the last word on the first line. But
+ // also check the prefix since there are other things called
+ // 'cli', for example, "Mono JIT compiler".
//
- string ver;
- getline (is, ver);
- auto p (ver.rfind (' '));
- if (p != string::npos)
- ver = string (ver, p + 1);
+ string v;
+ getline (is, v);
- is.close (); // Don't block the other end.
-
- if (pr.wait ())
+ if (v.compare (0, 37,
+ "CLI (command line interface compiler)") == 0)
{
- if (ver.empty ())
+ size_t p (v.rfind (' '));
+
+ if (p == string::npos)
fail << "unexpected output from " << cli;
- return ver;
+ v.erase (0, p + 1);
}
+ else
+ {
+ if (!optional)
+ fail << cli << " is not command line interface compiler";
+
+ v.clear ();
+ }
+
+ is.close (); // Don't block the other end.
+
+ if (pr.wait ())
+ return v;
// Presumably issued diagnostics. Fall through.
}