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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/110710] LTO linker on Windows creates an invalid Makefile
Date: Thu, 02 May 2024 10:43:00 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110710

--- Comment #16 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:a704554d2e798e2e1b74b9fea4baf3477180bd9d

commit r15-108-ga704554d2e798e2e1b74b9fea4baf3477180bd9d
Author: Peter Damianov <peter0x44@disroot.org>
Date:   Sun Apr 28 16:16:12 2024 -0700

    lto-wrapper: Truncate files using -truncate driver option [PR110710]

    This commit changes the Makefiles generated by lto-wrapper to no longer=
 use
    the "mv" and "touch" shell commands. These don't exist on Windows, so w=
hen
the
    Makefile attempts to call them, it results in errors like:
    The system cannot find the file specified.

    This problem only manifested when calling gcc from cmd.exe, and having =
no
    sh.exe present on the PATH. The Windows port of GNU Make searches the P=
ATH
for
    an sh.exe, and uses it if present.

    I have tested this in environments with and without sh.exe on the PATH =
and
    confirmed it works as expected.

    Signed-off-by: Peter Damianov <peter0x44@disroot.org>

            PR lto/110710
            * lto-wrapper.cc (run_gcc): Instead of truncating a processed
            ltrans input from the Makefile use the new -truncate option
            to accomplish the same.=