[Scons-users] include dir with scons variant

Discussion:

[Scons-users] include dir with scons variant_dir handling

Hua Yanghao

2018-07-12 08:06:09 UTC

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

Bill Deegan

2018-07-12 12:26:21 UTC

Permalink

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

Post by Hua Yanghao
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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https://pairlist4.pair.net/mailman/listinfo/scons-users

Hua Yanghao

2018-07-12 14:00:28 UTC

Permalink

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

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

_______________________________________________
Scons-users mailing list
https://pairlist4.pair.net/mailman/listinfo/scons-users

Hua Yanghao

2018-07-12 14:05:26 UTC

Permalink

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.

Post by Hua Yanghao
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

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

_______________________________________________
Scons-users mailing list
https://pairlist4.pair.net/mailman/listinfo/scons-users

Hua Yanghao

2018-07-12 14:22:17 UTC

Permalink

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?

Post by Hua Yanghao
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.

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

_______________________________________________
Scons-users mailing list
https://pairlist4.pair.net/mailman/listinfo/scons-users

Hua Yanghao

2018-07-12 14:44:30 UTC

Permalink

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.

Post by Hua Yanghao
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?

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

_______________________________________________
Scons-users mailing list
https://pairlist4.pair.net/mailman/listinfo/scons-users

Bill Deegan

2018-07-12 15:06:41 UTC

Permalink

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

Post by Hua Yanghao
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.

Post by Hua Yanghao
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?

Post by Hua Yanghao
Hi Bill,
Yes, I am using SConscript("path/to/SConscript",

variant_dir="build"),

Post by Hua Yanghao

Post by Hua Yanghao
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 <

Post by Bill Deegan
so you're using SConscript('src/SConscript',variant_dir='build')

for example?

Post by Hua Yanghao

Post by Bill Deegan
You shouldn't need to do anything to make this work with any

builder.

Post by Hua Yanghao

Post by Bill Deegan
-Bill

Post by Hua Yanghao
Dear Scons Users and Developers,
I am using scons variant_dir so all builds (including a replica

of the