[Scons-users] SCons, forced includes and dependencies

[Bill Deegan]

Is it basically this:
http://repo.or.cz/valgrind.git/blob_plain/HEAD:/helgrind/helgrind.h

-Bill

On Sat, May 28, 2016 at 4:05 PM, Bill Deegan <bill at baddogconsulting.com>
wrote:

> Boris,
>
> What's in helgrind.h ?
>
> -Bill
>
> On Sat, May 28, 2016 at 9:04 AM, Sazonov Boris <bsazonov at gmail.com> wrote:
>
>> Hi.
>> In my project I need to use '-include' gcc flag to include a special
>> header before every source file. This file contains include and some
>> defines to annotate g++ STL implementation, which are necessary to
>> check multithreaded code under Helgrind.
>>
>> First of all, I add '-include' flag for compiler:
>>
>> env.Append(CPPFLAGS = ['-include', GetAbsolutePath('test/helgrind.h')])
>>
>> But it doesn't create dependency on this file. And I want all of my
>> cpp files to depend on this header. To solve it, I've come up with
>> scanner wrapper and overriding object builder in the environment:
>>
>> def forced_include_scanner(node, env, path, wrapped_scanner):
>>   flags = env['CPPFLAGS']
>>   print(wrapped_scanner(node, env, path)) # Returns an empty list
>>   return map(lambda f: f[1], filter(lambda f: f[0] == '-include',
>> zip(flags, flags[1:]))) + wrapped_scanner(node, env, path)
>>
>> obj_bld = env['BUILDERS']['Object']
>> env['BUILDERS']['Object'] = Builder(action = obj_bld.action, suffix =
>> obj_bld.suffix, src_suffix = obj_bld.src_suffix, source_scanner =
>> SCons.Scanner.Base(function = forced_include_scanner, name =
>> "ForcedIncludeScanner", argument = obj_bld.source_scanner))
>>
>> The problem is that wrapped_scanner(node, env, path) returns an empty
>> list.
>> What am I doing wrong?
>>
>> Thanks in advance!
>> Regards,
>> Boris Sazonov
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>> Scons-users at scons.org
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>>
>
>
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