[Buildroot] [Bug 15718] New: Cross-compiler called through toolchain-wrapper generates bogus error messages

[Buildroot] [Bug 15718] New: Cross-compiler called through toolchain-wrapper generates bogus error messages

[bugzilla]

https://bugs.busybox.net/show_bug.cgi?id=15718

            Bug ID: 15718
           Summary: Cross-compiler called through toolchain-wrapper
                    generates bogus error messages
           Product: buildroot
           Version: 2023.02
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: trivial
          Priority: P5
         Component: Other
          Assignee: unassigned@buildroot.uclibc.org
          Reporter: jimgeorge@gmail.com
                CC: buildroot@uclibc.org
  Target Milestone: ---

Cause:
Invoking the cross-compiler from the package generated by 'make sdk' with no
arguments

Expected behavior:
Should print arm-linux-cc: fatal error: No input files

Observed behavior:
Output is:
/path/to/buildroot/output/host/lib/gcc/arm-buildroot-linux-gnueabihf/11.3.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld:
/path/to/buildroot/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/Scrt1.o:
in function `_start':
(.text+0x40): undefined reference to `main'
collect2: error: ld returned 1 exit status

With BR2_DEBUG_WRAPPER set to 2, I get the following extra information:

Toolchain wrapper was called with:
    'buildroot-ts/buildroot/output/host/bin/arm-linux-cc'
Toolchain wrapper executing:
    '/path/to/buildroot/output/host/bin/arm-linux-cc.br_real'
    '--sysroot'
    '/path/to/buildroot/output/host/arm-buildroot-linux-gnueabihf/sysroot'
    '-fstack-protector-strong'
    '-fPIE'
    '-pie'
    '-Wl,-z,now'
    '-Wl,-z,relro'

When invoking arm-linux-cc with an example program to compile, behavior is
normal. It seems like the 'Wl' options are what trigger the errors from the
underlying gcc. Adding this as a 'trivial' bug so that it could either be
documented or calling toolchain-wrapper with no arguments is special-cased so
other buildroot newbies aren't tripped up by this.

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[Buildroot] [Bug 15718] Cross-compiler called through toolchain-wrapper generates bogus error messages

[bugzilla]

https://bugs.busybox.net/show_bug.cgi?id=15718

Yann E. MORIN <yann.morin.1998@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |MOVED
                 CC|                            |yann.morin.1998@free.fr
             Status|NEW                         |RESOLVED

--- Comment #1 from Yann E. MORIN <yann.morin.1998@free.fr> ---
Thank you for your report.

The issue tracker for the Buildroot project has been moved to
the Gitlab.com issue tracker:
    https://gitlab.com/buildroot.org/buildroot/-/issues

We are taking this opportunity to close old issues in this old
tracker. If you believe your issue is still relevant, please
open one in the new issue tracker.

Thank you!

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