[Bug 66364] New: "error: ‘mutex_proc_pthread_methods’ undeclared" when cross compiling

[bu...@apache.org]

https://bz.apache.org/bugzilla/show_bug.cgi?id=66364

            Bug ID: 66364
           Summary: "error: ‘mutex_proc_pthread_methods’ undeclared" when
                    cross compiling
           Product: APR
           Version: HEAD
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: APR
          Assignee: bugs@apr.apache.org
          Reporter: alex.iris.parker@gmail.com
  Target Milestone: ---

Created attachment 38439
  --> https://bz.apache.org/bugzilla/attachment.cgi?id=38439&action=edit
Patch to trust given ac_cv_file__dev_zero when cross compiling

APR uses AC_TRY_RUN to determine if:

* We have /dev/zero
* We can mmap /dev/zero

When cross compiling, the configure script can't determine characteristics of
the target. If the target has /dev/zero, you can set ac_cv_file__dev_zero=yes
to fill in an answer for the first question, but the configure script
immediately defeats that when answering the second.

AC_TRY_FUN takes four arguments: the test, and what happens on success,
failure, and cross-compiling. The APR script uses this as a "gate" to
clear ac_cv_file__dev_zero when /dev/zero exists but it turns out not
to be useable. It takes a pessimistic approach: if you can't "prove"
it is mmap-able, clear the flag.

This patch changes that to leave the flag alone while cross compiling;
just assume /dev/zero is mmap-able. It relies on ac_cv_file__dev_zero
to be correctly set for the target by the cross compilation environment.
The fourth parameter is changed to
[:] and not [] because [] engages autoconf's default cross-compiling
behavior, which raises an error.

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[Bug 66364] "error: ‘mutex_proc_pthread_methods’ undeclared" when cross compiling

[bu...@apache.org]

https://bz.apache.org/bugzilla/show_bug.cgi?id=66364

Sam James <sa...@gentoo.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sam@gentoo.org

--- Comment #1 from Sam James <sa...@gentoo.org> ---
I'm wondering if this was fixed by
https://github.com/apache/apr/commit/1b7323cb739f670d50ff85d6894a37b8d136f8e2
(patch stopped applying in Gentoo when bumping to 1.7.2, so looked into why).

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[Bug 66364] "error: ‘mutex_proc_pthread_methods’ undeclared" when cross compiling

[bu...@apache.org]

https://bz.apache.org/bugzilla/show_bug.cgi?id=66364

Sam James <sa...@gentoo.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |https://bugs.gentoo.org/830
                   |                            |833

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