From a40118d7b6f70f44eaf4a47a32808088fd039f71 Mon Sep 17 00:00:00 2001
From: Dan Willemsen <dwillemsen@google.com>
Date: Tue, 17 Oct 2017 17:46:41 -0700
Subject: Use soong_ui directly, instead of make

This will use ckati instead of make for dumping variables, for
consistent makefile parsing. It may also sandbox executions, etc.

Also skip the legacy make wrapper to build, and use soong_ui instead.
The command line arguments are equivalent, but -j is no longer
necessary, we'll default to a sane value.

Test: bit -b framework
Change-Id: Idc2c9d1abe84b6b783b8702925de5493d47a4509
---
 tools/bit/command.cpp |  2 +-
 tools/bit/main.cpp    |  7 ++++---
 tools/bit/make.cpp    | 29 ++++++-----------------------
 tools/bit/make.h      |  2 +-
 4 files changed, 12 insertions(+), 28 deletions(-)

diff --git a/tools/bit/command.cpp b/tools/bit/command.cpp
index 1ff7c221b26e..f95ea117a96e 100644
--- a/tools/bit/command.cpp
+++ b/tools/bit/command.cpp
@@ -189,7 +189,7 @@ run_command(const Command& command)
 int
 exec_with_path_search(const char* prog, char const* const* argv, char const* const* envp)
 {
-    if (prog[0] == '/') {
+    if (strchr(prog, '/') != NULL) {
         return execve(prog, (char*const*)argv, (char*const*)envp);
     } else {
         char* pathEnv = strdup(getenv("PATH"));
diff --git a/tools/bit/main.cpp b/tools/bit/main.cpp
index ad23971152b2..e81898f82418 100644
--- a/tools/bit/main.cpp
+++ b/tools/bit/main.cpp
@@ -588,12 +588,13 @@ run_phases(vector<Target*> targets, const Options& options)
     const string buildProduct = get_required_env("TARGET_PRODUCT", false);
     const string buildVariant = get_required_env("TARGET_BUILD_VARIANT", false);
     const string buildType = get_required_env("TARGET_BUILD_TYPE", false);
-    const string buildDevice = get_build_var(buildTop, "TARGET_DEVICE", false);
-    const string buildId = get_build_var(buildTop, "BUILD_ID", false);
-    const string buildOut = get_out_dir();
 
     chdir_or_exit(buildTop.c_str());
 
+    const string buildDevice = get_build_var("TARGET_DEVICE", false);
+    const string buildId = get_build_var("BUILD_ID", false);
+    const string buildOut = get_out_dir();
+
     // Get the modules for the targets
     map<string,Module> modules;
     read_modules(buildOut, buildDevice, &modules, false);
diff --git a/tools/bit/make.cpp b/tools/bit/make.cpp
index a8002417b916..ef3ccc541589 100644
--- a/tools/bit/make.cpp
+++ b/tools/bit/make.cpp
@@ -36,31 +36,16 @@ using namespace std;
 
 map<string,string> g_buildVars;
 
-static unsigned int
-get_thread_count()
-{
-    unsigned int threads = std::thread::hardware_concurrency();
-    // Guess if the value cannot be computed
-    return threads == 0 ? 4 : static_cast<unsigned int>(threads * 1.3f);
-}
-
 string
-get_build_var(const string& buildTop, const string& name, bool quiet)
+get_build_var(const string& name, bool quiet)
 {
     int err;
 
     map<string,string>::iterator it = g_buildVars.find(name);
     if (it == g_buildVars.end()) {
-        Command cmd("make");
-        cmd.AddArg("--no-print-directory");
-        cmd.AddArg(string("-j") + std::to_string(get_thread_count()));
-        cmd.AddArg("-C");
-        cmd.AddArg(buildTop);
-        cmd.AddArg("-f");
-        cmd.AddArg("build/core/config.mk");
-        cmd.AddArg(string("dumpvar-") + name);
-        cmd.AddEnv("CALLED_FROM_SETUP", "true");
-        cmd.AddEnv("BUILD_SYSTEM", "build/core");
+        Command cmd("build/soong/soong_ui.bash");
+        cmd.AddArg("--dumpvar-mode");
+        cmd.AddArg(name);
 
         string output = trim(get_command_output(cmd, &err, quiet));
         if (err == 0) {
@@ -208,10 +193,8 @@ read_modules(const string& buildOut, const string& device, map<string,Module>* r
 int
 build_goals(const vector<string>& goals)
 {
-    Command cmd("make");
-    cmd.AddArg(string("-j") + std::to_string(get_thread_count()));
-    cmd.AddArg("-f");
-    cmd.AddArg("build/core/main.mk");
+    Command cmd("build/soong/soong_ui.bash");
+    cmd.AddArg("--make-mode");
     for (size_t i=0; i<goals.size(); i++) {
         cmd.AddArg(goals[i]);
     }
diff --git a/tools/bit/make.h b/tools/bit/make.h
index bb83c6e14226..1c9504d62d46 100644
--- a/tools/bit/make.h
+++ b/tools/bit/make.h
@@ -31,7 +31,7 @@ struct Module
     vector<string> installed;
 };
 
-string get_build_var(const string& buildTop, const string& name, bool quiet);
+string get_build_var(const string& name, bool quiet);
 
 /**
  * Poke around in the out directory and try to find a device name that matches
-- 
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