PIO cuts .a when -l: option used

[puzrin]

Configuration

Operating system: Ubuntu 18.04LTS

PlatformIO Version (platformio --version): 4.4.0a3

Description of problem

If i need to link library without lib prefix, via -l: option, i have to type double .a.a at the name end:

-Lhal/stm32g473rc_usb_pd/stm32cube/Middlewares/ST/STM32_USBPD_Library/Core/lib
-l:USBPDCORE_PD3_CONFIG_1_CM4_wc32.a.a

Reference: https://community.platformio.org/t/failing-to-link-external-library/14544/3?u=vit

Steps to Reproduce

• Use real project to play with https://github.com/puzrin/reflow_micro/blob/master/platformio.ini#L134-L135

Actual Results

Have to add one more .a to library name: -l:USBPDCORE_PD3_CONFIG_1_CM4_wc32.a.a

Expected Results

Expect to use full name, as recommended at SO:

-l:USBPDCORE_PD3_CONFIG_1_CM4_wc32.a

[valeros]

It looks like SCons is not aware of this syntax, so it might be a good idea to raise an issue in their repository.
@puzrin Is there any official/reliable source of documentation for this feature besides a post on SO?

[puzrin]

@valeros i don't know, i use c/cpp for hobby only - almost no experience.

[ivankravets]

I'm not sure that we can fix this issue. We use SCons as a build system.

@puzrin what is a reason that you can't use lib prefix for the archive?

[puzrin]

See https://github.com/puzrin/reflow_micro/tree/master/hal/stm32g473rc_usb_pd/stm32cube

It's auto-generated by CubeMX (usb pd middleware driver). I keep hal in separate folder, and don't touch there anything by hand. This simplifies maintenance when something should be changed.

PS. I don't use built-in hal because need more fresh and more complete version with mw.

[puzrin]

I'd suggest to remove .a magic as non standard... But, for compatibility, you could apply it only to -l, excluding -l:.

[ivankravets]

Please file an issue at https://github.com/SCons/scons/issues and make reference to this issue. Thanks!

[puzrin]

@ivankravets you asked about official docs of :. From ld man https://linux.die.net/man/1/ld:

If namespec is of the form :filename, ld will search the library path for a file called filename, otherwise it will search the library path for a file called libnamespec.a.

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Please file an issue at SCons/scons/issues and make reference to this issue. Thanks!

Cold you do it yourself? I don't know how to explain that problem is on their side & create a minimal sample.

[ivankravets]

We don't manipulate with library names or strip them. Please file an issue at https://github.com/SCons/scons/issues.
We will discuss together with SCons Team what to do in this case.