PR4186: cross-architecture probe building

* main.cxx (main): Add 'a:' and 'B:' options.
* session.h (kbuildflags): New place to store -B args.
* testsuite/systemtap.base/cmd_parse.exp: Test them lightly.
* buildrun.cxx (run_make_cmd): Use "--no-print-directory"
  rather than ">/dev/null" in kbuild invocations.  Pass
  '-a' and '-B' flags along.
* hash.cxx (find_script_hash): Add them.
* NEWS, stap.1.in: Mention this.

1 files changed, 13 insertions, 4 deletions

diff --git a/buildrun.cxx b/buildrun.cxx
index 1820002d..69cc5a66 100644
--- a/buildrun.cxx
+++ b/buildrun.cxx
@@ -59,9 +59,9 @@ run_make_cmd(systemtap_session& s, string& make_cmd)
   if (s.verbose > 2)
     make_cmd += " V=1";
   else if (s.verbose > 1)
-    make_cmd += " >/dev/null";
+    make_cmd += " --no-print-directory";
   else
-    make_cmd += " -s >/dev/null";
+    make_cmd += " -s --no-print-directory";
 
   return stap_system (s.verbose, make_cmd);
 }
@@ -222,8 +222,17 @@ compile_pass (systemtap_session& s)
 
   // Run make
   string make_cmd = string("make")
-    + string (" -C \"") + module_dir + string("\"");
-  make_cmd += string(" M=\"") + s.tmpdir + string("\" modules");
+    + string (" -C \"") + module_dir + string("\""); // XXX: lex_cast_qstring?
+  make_cmd += string(" M=\"") + s.tmpdir + string("\"");
+
+  // Add architecture
+  make_cmd += string(" ARCH=") + lex_cast_qstring(s.architecture);
+
+  // Add any custom kbuild flags
+  for (unsigned k=0; k<s.kbuildflags.size(); k++)
+    make_cmd += string(" ") + lex_cast_qstring(s.kbuildflags[k]);
+
+  make_cmd += string (" modules");
 
   rc = run_make_cmd(s, make_cmd);