databases/py-mysqlclient and others fail to build after update of mariadb100-client

[Wolfgang Zenker]

Hi,

* Wolfgang Zenker <wolfgang at lyxys.ka.sub.org> [180810 14:29]:
> the immediate reason for the build failure appears to be a weird option
> "-l-pthread" in the cc invocation:

> ------------------------
> -- snip ---
> building '_mysql' extension
> creating build/temp.freebsd-11.1-RELEASE-p12-amd64-2.7
> cc -DNDEBUG -O2 -pipe -DLIBICONV_PLUG -fstack-protector -fno-strict-aliasing -DLIBICONV_PLUG -fPIC -Dversion_info=(1,3,12,'final',0) -D__version__=1.3.12 -I/usr/local/include/mysql -I/usr/local/include/mysql/.. -I/usr/local/include/python2.7 -c _mysql.c -o build/temp.freebsd-11.1-RELEASE-p12-amd64-2.7/_mysql.o
> cc -shared -fstack-protector -O2 -pipe -DLIBICONV_PLUG -fstack-protector -fno-strict-aliasing -DLIBICONV_PLUG build/temp.freebsd-11.1-RELEASE-p12-amd64-2.7/_mysql.o -L/usr/local/lib/mysql -L/usr/local/lib -L/usr/local/lib -lmysqlclient_r -l-pthread -lz -lm -lexecinfo -lssl -lcrypto -lpython2.7 -o build/lib.freebsd-11.1-RELEASE-p12-amd64-2.7/_mysql.so
> /usr/bin/ld: cannot find -l-pthread
> cc: error: linker command failed with exit code 1 (use -v to see invocation)
> error: command 'cc' failed with exit status 1
> *** Error code 1
> ------------------------

> As the port itself has not changed for several weeks, the real problem
> must be somewhere else, probably in the mariadb port?
> Any idea where this weird lib parameter comes from and how / where to
> fix it?

the problem is in databases/mariadb100-client, which creates a
mysql_config script with the weird lib parameter.
I have filed PR #230839

Wolfgang