[clang] remove InferClang command from generated frontend debug scripts

Summary:
The debug script wants to run InferClang on the file at hand, but that often
involves running a -cc1 command with InferClang, which is no longer supported.

This removes this functionality. The debug script now only dumps the AST to
biniou and its text representation.

Reviewed By: dulmarod

Differential Revision: D4319431

fbshipit-source-id: ef64912

.gitignore

@@ -20,9 +20,9 @@ _build
 *.exp.test.*
 *.test.dot
 duplicates.txt
-*.capture.sh
-*.capture.bdump
-*.capture.biniou
+*.ast.sh
+*.ast.bdump
+*.ast.biniou
 
 # generated by oUnit
 /oUnit-all.cache

infer/src/clang/Capture.re

@@ -132,23 +132,13 @@ let run_plugin_and_frontend source_path frontend clang_args => {
   let clang_command = ClangCommand.command_to_run (ClangCommand.with_plugin_args clang_args);
   if debug_mode {
     /* -cc1 clang commands always set -o explicitly */
-    let basename = source_path ^ ".capture";
+    let basename = source_path ^ ".ast";
     /* Emit the clang command with the extra args piped to InferClang */
     let frontend_script_fname = Printf.sprintf "%s.sh" basename;
     let debug_script_out = open_out frontend_script_fname;
     let debug_script_fmt = Format.formatter_of_out_channel debug_script_out;
     let biniou_fname = Printf.sprintf "%s.biniou" basename;
     Format.fprintf debug_script_fmt "%s \\@\n  > %s@\n" clang_command biniou_fname;
-    let infer_clang_options =
-      String.concat
-        sep::"^"
-        (Option.to_list (Sys.getenv CLOpt.args_env_var) @ ["--clang-biniou-file", biniou_fname]);
-    Format.fprintf
-      debug_script_fmt
-      "%s=\"%s\" %s@\n"
-      CLOpt.args_env_var
-      infer_clang_options
-      (ClangCommand.with_exec Sys.executable_name clang_args |> ClangCommand.command_to_run);
     Format.fprintf
       debug_script_fmt
       "bdump -x -d \"%s/clang_ast.dict\" -w '!!DUMMY!!' %s \\@\n  > %s.bdump"