On 32-bit:

https://buildd.debian.org/status/fetch.php?pkg=osrm-backend&arch=m68k&ver=26.5.0%2Bdfsg1-3&stamp=1785998790&raw=0

...
CMake Error at CMakeLists.txt:364 (find_package):
  Could not find a configuration file for package "sol2" that is compatible
  with requested version "".

  The following configuration files were considered but not accepted:

    /usr/share/cmake/sol2/sol2-config.cmake, version: 3.5.0 (64bit)
      The version found is not compatible with the version requested.
...


This is due to:

$ cat /usr/share/cmake/sol2/sol2-config-version.cmake
...
# check that the installed version has the same 32/64bit-ness as the one which is currently searching:
if(NOT CMAKE_SIZEOF_VOID_P STREQUAL "8")
  math(EXPR installedBits "8 * 8")
  set(PACKAGE_VERSION "${PACKAGE_VERSION} (${installedBits}bit)")
  set(PACKAGE_VERSION_UNSUITABLE TRUE)
endif()
$


If this cannot be easily fixed in the package,
then making sol2-dev binary-any is an option.

Dear Maintainer,

Please find in attachment a patch that you can drop in the
debian/patches/ directory to fix this issue

Best regards,
Sébastien

Dear maintainer,

I've prepared an NMU for sol2 (versioned as 3.5.0-3.1) and will
upload it to DELAYED/5 in a few minutes.
Please feel free to tell me if I should cancel it.

Regards,
Sébastien

We believe that the bug you reported is fixed in the latest version of
sol2, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1144017@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Sébastien Noel <twolife@debian.org> (supplier of updated sol2 package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Thu, 27 Aug 2026 09:42:34 +0200
Source: sol2
Architecture: source
Version: 3.5.0-3.1
Distribution: unstable
Urgency: medium
Maintainer: syzygial <syzygial.123@gmail.com>
Changed-By: Sébastien Noel <twolife@debian.org>
Closes: 1144017
Changes:
 sol2 (3.5.0-3.1) unstable; urgency=medium
 .
   * Non-maintainer upload.
   * Add patch to remove architecture-specific contents from sol2-dev
     (Closes: #1144017)
Checksums-Sha1:
 b0147355544ef0aaa92aa17b6325574acb55cf29 1803 sol2_3.5.0-3.1.dsc
 4258afe1aa0b81d0f7dea7dbbff2014487311b53 9432 sol2_3.5.0-3.1.debian.tar.xz
 3a9411c1b6881c8739718465eab2b8b93ad37484 11290 sol2_3.5.0-3.1_amd64.buildinfo
Checksums-Sha256:
 91d57106f13a7c2626a1abc4f1ba7f39a684ac7aacfe27da2589261d56a64b7c 1803 sol2_3.5.0-3.1.dsc
 7669e8fbaf70199c991c2de875634747f7ecdcb80980726876322688ed4be7d2 9432 sol2_3.5.0-3.1.debian.tar.xz
 a0c34a5a32949d4faa7496996c37d1868ffdd7d28ce47a9b58c62406167a0ff3 11290 sol2_3.5.0-3.1_amd64.buildinfo
Files:
 5d93d675d443fba632ac48d30d50b99f 1803 libs optional sol2_3.5.0-3.1.dsc
 5db3ed9f6c440afa69fe5832ff52d475 9432 libs optional sol2_3.5.0-3.1.debian.tar.xz
 8ec3db327fd459ff14d2502c4c8ee739 11290 libs optional sol2_3.5.0-3.1_amd64.buildinfo
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