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

[Bill Deegan]

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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