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From: "unlvsur at live dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgcc/110017] New: Crossback Compilation for multilib fails on
 latest ubuntu due to -mx32 being disabled by the linux kernel
Date: Sun, 28 May 2023 22:39:37 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110017

            Bug ID: 110017
           Summary: Crossback Compilation for multilib fails on latest
                    ubuntu due to -mx32 being disabled by the linux kernel
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libgcc
          Assignee: unassigned at gcc dot gnu.org
          Reporter: unlvsur at live dot com
  Target Milestone: ---

I attempted crossback compilation for GCC, where the compiler is built on
Linux, runs on Windows, and is targeted for Linux again. However, the build
system of libgcc includes a sanity test to detect the functionality of the
compiler, which prevents the build for the -mx32 option and disables m32.

Moreover, during crossback compilation, GCC specifically looks for the "cc"
command instead of just "gcc," even in cases where it doesn't exist.

Is there a way to remove or bypass the sanity test restriction for crossback
compilation in this scenario?=