Boost error when building Gazebo

[vladh]

When building Gazebo, I'm running into the following Boost error:

In file included from /home/vladh/.cache/yay/gazebo/src/gazebo-classic-gazebo11_11.14.0/gazebo/common/BVHLoader.cc:27:
/home/vladh/.cache/yay/gazebo/src/gazebo-classic-gazebo11_11.14.0/gazebo/common/CommonIface.hh: In function ‘std::string gazebo::common::get_sha1(const T&)’:
/home/vladh/.cache/yay/gazebo/src/gazebo-classic-gazebo11_11.14.0/gazebo/common/CommonIface.hh:244:21: error: cannot convert ‘unsigned int [5]’ to ‘unsigned char (&)[20]’
  244 |     sha1.get_digest(hash);
      |                     ^~~~
      |                     |
      |                     unsigned int [5]
In file included from /home/vladh/.cache/yay/gazebo/src/gazebo-classic-gazebo11_11.14.0/gazebo/common/CommonIface.hh:27:
/usr/include/boost/uuid/detail/sha1.hpp:179:43: note:   initializing argument 1 of ‘void boost::uuids::detail::sha1::get_digest(unsigned char (&)[20])’
  179 | inline void sha1::get_digest(digest_type& digest)
      |                              ~~~~~~~~~~~~~^~~~~~
make[2]: *** [gazebo/common/CMakeFiles/gazebo_common.dir/build.make:149: gazebo/common/CMakeFiles/gazebo_common.dir/BVHLoader.cc.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:4388: gazebo/common/CMakeFiles/gazebo_common.dir/all] Error 2
make: *** [Makefile:146: all] Error 2
==> ERROR: A failure occurred in build().
    Aborting...
 -> error making: gazebo-exit status 4
 -> Failed to install the following packages. Manual intervention is required:
gazebo - exit status 4

Downgrading boost and boost-libs to 1.74.0 fixes the problem.

It may have fixed the problem but I was getting libicu conflicts because of it so I gave up.