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From: "tschwinge at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgomp/113192] [11/12/13/14 Regression] ERROR: couldn't
 execute "../../../gcc/libgomp/testsuite/flock": no such file or directory
Date: Tue, 02 Jan 2024 15:21:08 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113192

Thomas Schwinge <tschwinge at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[14 Regression] ERROR:      |[11/12/13/14 Regression]
                   |couldn't execute            |ERROR: couldn't execute
                   |"../../../gcc/libgomp/tests |"../../../gcc/libgomp/tests
                   |uite/flock": no such file   |uite/flock": no such file
                   |or directory                |or directory
             Blocks|                            |66005
            Version|14.0                        |11.0

--- Comment #1 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
(In reply to John David Anglin from comment #0)
> HP-UX doesn't have flock but it does have perl. configure tries to create
> a fallback but a relative path to libgomp/testsuite/flock is generated.
> It is wrong when the testsuite is run.
>=20
> AC_MSG_NOTICE([checking for flock implementation])
> AC_CHECK_PROGS(FLOCK, flock)
> # Fallback if 'perl' is available.
> if test -z "$FLOCK"; then
>   AC_CHECK_PROG(FLOCK, perl, $srcdir/testsuite/flock)
> fi

Aha, sorry.  Does it work if you changes:

    -AC_CHECK_PROG(FLOCK, perl, $srcdir/testsuite/flock)
    +AC_CHECK_PROG(FLOCK, perl, $ac_abs_srcdir/testsuite/flock)

..., so that this:

> configure: checking for flock implementation
> checking for flock... no
> checking for perl... ../../../gcc/libgomp/testsuite/flock

... turns into an absolute path, to resolve:

> Running /home/dave/gnu/gcc/gcc/libgomp/testsuite/libgomp.c/c.exp ...
> ERROR: tcl error sourcing
> /home/dave/gnu/gcc/gcc/libgomp/testsuite/libgomp.c/c.exp.
> ERROR: tcl error code NONE
> ERROR: couldn't execute "../../../gcc/libgomp/testsuite/flock": no such f=
ile
> or directory

... this.

If that works, and you submit a patch, please in the commit log cite this
commit:

> This problem was introduced by the following commit:
>=20
> commit 04abe1944d30eb18a2060cfcd9695d085f7b4752
> Author: Thomas Schwinge <thomas@codesourcery.com>
> Date:   Mon May 15 20:00:07 2023 +0200
>=20
>     Support parallel testing in libgomp: fallback Perl 'flock' [PR66005]

..., and also specify 'PR testsuite/66005' in the commit log.

If that suggestion doesn't easily resolve this issue, then I'll be able to =
look
into it next week.


> It appears this problem can be worked around by exporting FLOCK.

But only if that specifies an absolute path (or a "suitable" relative one),=
 I
suppose?


I've also set this "11/12/13 Regression", as these branches use the exact s=
ame
code.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D66005
[Bug 66005] libgomp make check time is excessive=