[Scons-users] How to generate symbols list on GNU Arm Embedded Toolchain

[Marco Pastorelli]

Hi Hans,

Yes, I spent some time with “CDT build output parser” trying also the
various options like “heuristics” but when I check the parser log file I
always find some unresolved name or include.
So quite often on medium/large projects I get files with a wrong code
highlight.

I guess an effective solution can be the generation of symbols directly
from the compiler, this way there’s no need to rely on IDE features.

I feel I’m not far, but I need some help to preserve the include hierarchy…
any suggestions?

Thanks!
Marco

On Sat, 1 Aug 2020 at 15:15, Hans-Christian Wild <hchr.wild at gmail.com>
wrote:

> Have you tried using the CDT build output parser? I would assume it's in
> there by default. SCons is verbose by default (echos all build commands),
> so this should be enough for the parser to pick up all includes, defines
> etc. automatically.
>
> -Hans
>
> On Sat, Aug 1, 2020 at 10:36 AM Marco Pastorelli <mpastorelli at gmail.com>
> wrote:
>
>> Hi Bill,
>>
>> I'm using MCUXpresso, it's an Eclipse-based IDE provided by NXP
>>
>> Thanks!
>> Marco
>>
>> On Fri, 31 Jul 2020 at 18:35, Bill Deegan <bill at baddogconsulting.com>
>> wrote:
>>
>>> Which IDE are you using?
>>>
>>> On Fri, Jul 31, 2020 at 7:52 AM Marco Pastorelli <mpastorelli at gmail.com>
>>> wrote:
>>>
>>>> Hi all!
>>>>
>>>> I’m using SCons to build an Arm Cortex-M7 project based on GNU Arm
>>>> Embedded Toolchain.
>>>> Other than compiling the project, I’d like to generate the list of
>>>> symbols to import from my IDE to get an accurate code highlighting.
>>>> I wrote some code to generate the list of header files included in the
>>>> projects, then I’m trying to get the symbol form every header file.
>>>> The main issue I’m facing is that the include hierarchy is not
>>>> preserved, so for example I got errors from freertos because FreeRTOS.h
>>>> must appear in source files before include task.h.
>>>>
>>>> Does anybody know how to fix this problem or a different method to
>>>> generate the symbols list?
>>>>
>>>> Thanks! Below a snippet of my code
>>>> Marco
>>>>
>>>>
>>>> def generate_include_list(env, target, source):
>>>>     """create a file to store include paths in GNU style, to be loaded
>>>> with @"""
>>>>     paths = []
>>>>     for p in env['CPPPATH']:
>>>>         path = Path(p)
>>>>         try:
>>>>             path.is_dir()
>>>>             paths.append(str(path))
>>>>         except OSError:
>>>>             pass
>>>>     with open('include.list', 'w') as fileout:
>>>>         for path in paths:
>>>>             fileout.write(' -I ' + path.replace('\\', '/'))
>>>>
>>>>
>>>> def cleanup_header_list(env, target, source):
>>>>     """get rid of the toolchain comments, we only need a list of real
>>>> file paths"""
>>>>     with open('tmp_header_file.list', 'r') as filein:
>>>>         lines = []
>>>>         for line in filein:
>>>>             path = Path(line.strip())
>>>>             try:
>>>>                 path.is_file()
>>>>                 lines.append(str(path))
>>>>             except OSError:
>>>>                 pass
>>>>     lines.reverse()
>>>>     with open('header_file.list', 'w') as fileout:
>>>>         for line in reversed(lines):
>>>>             fileout.write(line.replace('\\', '/') + '\n')
>>>>
>>>>
>>>> # get the list of the header files (except toolchain header files)
>>>> # in case also the toolchain header files are needed, use the option -M
>>>> env.Command(
>>>>     target='tmp_header_file.list',
>>>>     source='',
>>>>     action=[generate_include_list, '$CC -H -MM src/main.c @include.list
>>>> $CCFLAGS > $TARGET', cleanup_header_list]
>>>> )
>>>>
>>>>
>>>> # from all the header files get the symbols
>>>> env.Command(
>>>>     target='symbol.list',
>>>>     source='',
>>>>     action=['type header_file.list', '$CC -E -dM @include.list $CCFLAGS
>>>> @header_file.list > $TARGET']
>>>> )
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