[Bug build/31892] Always install mtrace.

["fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=31892

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |2.40
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #7 from Florian Weimer <fweimer at redhat dot com> ---
Fixed for 2.40 via:

commit 086910fc41655152812b515dc324d2ac0dc36e67
Author: Florian Weimer <fweimer@redhat.com>
Date:   Thu Jun 20 10:32:16 2024 +0200

    malloc: Always install mtrace (bug 31892)

    Generation of the Perl script does not depend on Perl, so we can
    always install it even if $(PERL) is not set during the build.

    Change the malloc/mtrace.pl text substition not to rely on $(PERL).
    Instead use PATH at run time to find the Perl interpreter. The Perl
    interpreter cannot execute directly a script that starts with
    “#! /bin/sh”: it always executes it with /bin/sh.  There is no
    perl command line switch to disable this behavior.  Instead, use
    the Perl require function to execute the script.  The additional
    shift calls remove the “.” shell arguments.  Perl interprets the
    “.” as a string concatenation operator, making the expression
    syntactically valid.

    Reviewed-by: Carlos O'Donell <carlos@redhat.com>

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