[Scons-users] include dir with scons variant_dir handling

[Hua Yanghao]

Both. for VCS it is something like "+incdir+path/to/include", however
this is not my issue.

I can use _concat() and INCPREFIX to have the right format of include,
but the included files won't be copied into the build folder.

I believe this is done in C scanner, need to dig a bit more.
On Thu, Jul 12, 2018 at 5:07 PM Bill Deegan <bill at baddogconsulting.com> wrote:
>
> Which HDL are you using? Verilog or VHDL?
> What's the include syntax?
> (It's been a while..)
>
> You should probably create HDLINCFLAGS and user $_concat with your own INCPREFIX... etc.
> Take a look at: https://scons.org/doc/production/HTML/scons-man.html and search for _concat
>
> -Bill
>
>
> On Thu, Jul 12, 2018 at 7:44 AM, Hua Yanghao <huayanghao at gmail.com> wrote:
>>
>> After digging into a bit more, it looks like C builders will scan for
>> included dependencies (not sure how this is done reliably and how deep
>> include case are handled), and only those used header files are copied
>> to build folder. And from --tree=all it clearly shows scons knows
>> these files being used and a dependency is in place.
>>
>> Seems if I want this to happen for HDL files I then need to either
>> write a scanner, or simply makes each and every hdl files depends on
>> the entire include files if I want the include files to be copied
>> properly. I will give this a try but not sure if this is the best way
>> to do it. Otherwise writing a scanner I don't understand how to make
>> it reliable without using a real HDL compiler.
>> On Thu, Jul 12, 2018 at 4:22 PM Hua Yanghao <huayanghao at gmail.com> wrote:
>> >
>> > This works as to expand CPPPATH into a list of path however this is
>> > not taking care of copying include files into build directory.
>> >
>> > any idea?
>> > On Thu, Jul 12, 2018 at 4:05 PM Hua Yanghao <huayanghao at gmail.com> wrote:
>> > >
>> > > This is the magic? '_CPPINCFLAGS'  : '$( ${_concat(INCPREFIX, CPPPATH,
>> > > INCSUFFIX, __env__, RDirs, TARGET, SOURCE)} $)'
>> > >
>> > > So I guess I need to generate and use this _CPPINCFLAGS in my builder
>> > > and define my own INCPREFIX/SUFFIX and it should do? Will give it a
>> > > try quickly.
>> > > On Thu, Jul 12, 2018 at 4:00 PM Hua Yanghao <huayanghao at gmail.com> wrote:
>> > > >
>> > > > Hi Bill,
>> > > > Yes, I am using SConscript("path/to/SConscript", variant_dir="build"),
>> > > > and apparently the CPPPATH is only taken care in my C code build, not
>> > > > for my HDL builds.
>> > > > And I even want something like "INCPATH" instead of "CPPPATH", and
>> > > > generates not "-Ipath/to/my/include" but also other formats e.g.
>> > > > "+incdir+path/to/my/include".
>> > > >
>> > > > Any idea?
>> > > >
>> > > > Best Regards,
>> > > > Yanghao
>> > > > On Thu, Jul 12, 2018 at 2:31 PM Bill Deegan <bill at baddogconsulting.com> wrote:
>> > > > >
>> > > > > so you're using SConscript('src/SConscript',variant_dir='build') for example?
>> > > > > You shouldn't need to do anything to make this work with any builder.
>> > > > >
>> > > > > -Bill
>> > > > >
>> > > > > On Thu, Jul 12, 2018 at 4:06 AM, Hua Yanghao <huayanghao at gmail.com> wrote:
>> > > > >>
>> > > > >> Dear Scons Users and Developers,
>> > > > >> I am using scons variant_dir so all builds (including a replica of the
>> > > > >> original file, e.g. duplicate=1 by default) output in a separate
>> > > > >> folder.
>> > > > >>
>> > > > >> This works out of box for C include files, which also have a nice
>> > > > >> duplicate in the output directory (I am not using scanners so I guess
>> > > > >> all C include files are duplicated). However now I am enabling new
>> > > > >> customized builders, which also have a similar concept of include path
>> > > > >> and include files, how can I achieve the same as for C code
>> > > > >> compilation, e.g. to have include path and its files dupliated in the
>> > > > >> output folder?
>> > > > >>
>> > > > >> Thanks for any tips before I dive into the source code.
>> > > > >>
>> > > > >> Best Regards,
>> > > > >> Yanghao Hua
>> > > > >> _______________________________________________
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>> > > > >
>> > > > >
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