PyNaCl Build Failure on Solaris 10: make check Fails During randombytes Test

Environment:

•	OS: Solaris 10 (SunOS 5.10)
•	Architecture: x86_64
•	GCC Version: 9.5.0
•	Python Version: 3.11
•	PyNaCl Version: 1.4.0 (attempting to build from source)
•	libsodium Version: 1.0.18 (built from source)

Issue Summary:

I am attempting to install PyNaCl on a Solaris 10 system, but the build process fails during the make check step. The failure occurs in the randombytes test, which results in the overall test suite failing with a non-zero exit status.

PASS: aead_aes256gcm
PASS: aead_aes256gcm2
PASS: aead_chacha20poly1305
...
FAIL: randombytes
...

Testsuite summary for libsodium 1.0.18

TOTAL: 77

PASS: 76

SKIP: 0

XFAIL: 0

FAIL: 1

XPASS: 0

ERROR: 0

============================================================================
See test/default/test-suite.log
Please report to https://github.com/jedisct1/libsodium/issues

make[4]: *** [Makefile:1776: test-suite.log] Error 1
make[4]: Leaving directory '/usr/PyNaCl-1.4.0/build/temp.solaris-2.10-i86pc.64bit-cpython-311/test/default'
make[3]: *** [Makefile:1884: check-TESTS] Error 2
make[3]: Leaving directory '/usr/PyNaCl-1.4.0/build/temp.solaris-2.10-i86pc.64bit-cpython-311/test/default'
make[2]: *** [Makefile:2490: check-am] Error 2
make[2]: Leaving directory '/usr/PyNaCl-1.4.0/build/temp.solaris-2.10-i86pc.64bit-cpython-311/test/default'
make[1]: *** [Makefile:402: check-recursive] Error 1
make[1]: Leaving directory '/usr/PyNaCl-1.4.0/build/temp.solaris-2.10-i86pc.64bit-cpython-311/test'
make: *** [Makefile:514: check-recursive] Error 1
Traceback (most recent call last):
File "/usr/PyNaCl-1.4.0/setup.py", line 216, in
setup(
...
subprocess.CalledProcessError: Command '['make', 'check']' returned non-zero exit status 2.

Start with libsodium's test/default/test-suite.log and the failing randombytes test to identify why it fails on Solaris 10. Then inspect PyNaCl's setup.py around the make check invocation; done means the dependency checks pass and PyNaCl builds successfully from source on the reported environment.