Google omaha build error - build

Question

I'm getting a few warnings and fatal error when I try to build omaha on windows 10 machine.
C:\updater\omaha\omaha>hammer
scons: warning: No installed VCs
File "C:\chromium\upd\swtoolkit\site_scons\site_init.py", line 426, in SiteInitMain
scons: warning: No version of Visual Studio compiler found - C/C++ compilers most likely not set correctly
File "C:\chromium\upd\swtoolkit\site_scons\site_init.py", line 426, in SiteInitMain
scons: Reading SConscript files ...
scons: warning: No installed VCs
File "C:\chromium\upd\swtoolkit\site_scons\site_tools\target_platform_windows.py", line 283, in generate
scons: warning: No version of Visual Studio compiler found - C/C++ compilers most likely not set correctly
File "C:\chromium\upd\swtoolkit\site_scons\site_tools\target_platform_windows.py", line 283, in generate
Using precompiled headers.
Building versions: 1.3.99.0
python C:\chromium\upd\omaha\omaha\tools\proxy_clsid_utils.py
AttributeError: SConsEnvironment instance has no attribute 'WiX':
File "C:\chromium\upd\omaha\omaha\main.scons", line 992:
BuildEnvironments(_environments)
File "C:\chromium\upd\swtoolkit\site_scons\site_init.py", line 276:
e.ExecuteDefer()
File "C:\Python24\Lib\site-packages\scons-1.3.1\SCons\Environment.py", line 224:
return apply(self.method, nargs, kwargs)
File "C:\chromium\upd\swtoolkit\site_scons\site_tools\defer.py", line 171:
func(fenv)
File "C:\chromium\upd\swtoolkit\site_scons\site_init.py", line 203:
exports={'env': ec}, duplicate=0)
File "C:\Python24\Lib\site-packages\scons-1.3.1\SCons\Script\SConscript.py", line 553:
return apply(_SConscript, [self.fs,] + files, subst_kw)
File "C:\Python24\Lib\site-packages\scons-1.3.1\SCons\Script\SConscript.py", line 262:
exec _file_ in call_stack[-1].globals
File "C:\chromium\upd\omaha\omaha\recovery\build.scons", line 104:
env.BuildSConscript('repair_exe')
File "C:\Python24\Lib\site-packages\scons-1.3.1\SCons\Environment.py", line 224:
return apply(self.method, nargs, kwargs)
File "C:\chromium\upd\swtoolkit\site_scons\site_tools\environment_tools.py", line 191:
env.SConscript(script_file, exports={'env': env.Clone()})
File "C:\Python24\Lib\site-packages\scons-1.3.1\SCons\Script\SConscript.py", line 553:
return apply(_SConscript, [self.fs,] + files, subst_kw)
File "C:\Python24\Lib\site-packages\scons-1.3.1\SCons\Script\SConscript.py", line 262:
exec _file_ in call_stack[-1].globals
File "C:\chromium\upd\omaha\omaha\recovery\repair_exe\build.scons", line 37:
env.BuildSConscript(subdir)
File "C:\Python24\Lib\site-packages\scons-1.3.1\SCons\Environment.py", line 224:
return apply(self.method, nargs, kwargs)
File "C:\chromium\upd\swtoolkit\site_scons\site_tools\environment_tools.py", line 191:
env.SConscript(script_file, exports={'env': env.Clone()})
File "C:\Python24\Lib\site-packages\scons-1.3.1\SCons\Script\SConscript.py", line 553:
return apply(_SConscript, [self.fs,] + files, subst_kw)
File "C:\Python24\Lib\site-packages\scons-1.3.1\SCons\Script\SConscript.py", line 262:
exec _file_ in call_stack[-1].globals
File "C:\chromium\upd\omaha\omaha\recovery\repair_exe\msp\build.scons", line 156:
old_msi, new_msi = CreateMsiInstallerFiles(
File "C:\chromium\upd\omaha\omaha\recovery\repair_exe\msp\build.scons", line 60:
old_unsigned_output = old_unsigned_env.WiX(
I spent a lot of time debugging warnings and seems scons 1.3.1 doesn't support visual studio 2015, however google's build
instructions imply opposite. Also it's not fully clear whether the error depends on the warnings. Please help to solve the issue.

Answer 1

I solved the issue, turns out a new version of wix toolset has bin folder with all the utils and official docs and tutorial contains wrong environment variable. By the way the warnings have no impact on build process at all.
So probably there is no point to debug any code in similar situations, just need to check the environment.