mysql5: All compilers are either blacklisted

[coviex@…]

$ sudo port install sphinx
Password:
--->  Computing dependencies for sphinxWarning: All compilers are either blacklisted or unavailable; defaulting to first fallback option

--->  Dependencies to be installed: mysql5
--->  Fetching archive for mysql5
--->  Attempting to fetch mysql5-5.1.72_0.darwin_14.x86_64.tbz2 from http://nue.de.packages.macports.org/macports/packages/mysql5
--->  Attempting to fetch mysql5-5.1.72_0.darwin_14.x86_64.tbz2 from http://lil.fr.packages.macports.org/mysql5
--->  Attempting to fetch mysql5-5.1.72_0.darwin_14.x86_64.tbz2 from http://mse.uk.packages.macports.org/sites/packages.macports.org/mysql5
--->  Fetching distfiles for mysql5
--->  Verifying checksums for mysql5
--->  Extracting mysql5
--->  Applying patches to mysql5
--->  Configuring mysql5
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
--->  Building mysql5
Error: org.macports.build for port mysql5 returned: command execution failed
Error: Failed to install mysql5
Please see the log file for port mysql5 for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_databases_mysql5/mysql5/main.log
Error: The following dependencies were not installed: mysql5
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets
Error: Processing of port sphinx failed

[ryandesign (Ryan Carsten Schmidt)]

Use one of the other mysql variants in the sphinx port. Use the command "port variants sphinx" to see what they are.

The problem of the old mysql5 port not building on Yosemite is a duplicate of #45455.