Bug#1142341: cpp-httplib: FTBFS on hurd-amd64 due to missing PATH_MAX

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Package: cpp-httplib
Version: 0.41.0+ds-3
Severity: important
Tags: patch

Dear Maintainers,

The package cpp-httplib fails to build from source (FTBFS) on the
GNU/Hurd 64-bit architecture (hurd-amd64).

The build process terminates with the following compiler error:
"error: =E2=80=98PATH_MAX=E2=80=99 was not declared in this scope"

This happens because GNU/Hurd does not impose any arbitrary
restrictions on file path lengths, and therefore deliberately does not
define the PATH_MAX constant in its headers.

To fix this issue, I implemented a standard fallback macro inside the
affected source file. If PATH_MAX is not defined by the system, it is
dynamically set to a safe temporary default value of 4096.

I have successfully verified this fix by compiling the package locally
using `dpkg-buildpackage` on a running hurd-amd64 environment. A simple
HTTP test server using the compiled .deb package was launched and
verified to work correctly.

Please find attached the patch file ('hurd-path_max.patch') containing
the exact diff for this resolution.

Thank you for your time and for maintaining this package.

Best regards,
[Torelli Paolo / Compsognathus]

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