#12 Cannot compile on 64-bit linux

[Jonathan Wakely]

I've not looked into this properly yet, I'm filing it
for reference and will come back to it shortly...

Trying to build from CVS on 64-bit linux (and maybe
other OSs?) fails because the linker assumes that if
the headers are in /usr/include/mysql the libs wwill be
in /usr/lib. On my 64-bit FC1 system the libs are in
/usr/lib64/

This must have been solved by other projects, so I'll
see how they did it.

For now I might have to install the 32bit libs...

[Jonathan Wakely]

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Of course, manually setting LDFLAGS=-L/usr/lib64/mysql when
running configure works too, but it'd be nice if this wasn't
needed.

[Murray Cumming]

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Trying to build from CVS on 64-bit linux (and maybe
other OSs?) fails because the linker assumes that if
the headers are in /usr/include/mysql the libs wwill be
in /usr/lib.

It's not the linker that's assuming that - it's our
mysqlcppapi configure.in that's assuming that. If the
libraries are not in a location that can be easily guessed
from the --with-mysql "prefix" value, then you need to add a
--with-mysql-libs configure option to override it.

Of course this would all be easier if MySQL installed a
pkgconfig file, like mysqlcppapi does.

> On my 64-bit FC1 system the libs are in
> /usr/lib64/

Yes, various distros put bits of MySQL in various randome
places. I blame MySQL.

[Jonathan Wakely]

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I've committed a macro, AC_PATH_MYSQL, which finds the right
paths.

You can now configure with --with-mysql-config=FILE to use
an installed mysql_config script.

[Jonathan Wakely]

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Re-opening this bug as mysql_config doesn't really help.

The version that comes with 3.23 RPMs from RedHat has broken
output for --cflags (it has apostrophes in the path which
have to be removed before it can be used)

The version that comes with 4.1 RPMs from mysql.com includes
unwanted args in --cflags (-g and -pipe) and gets confused
about the libs, finding libs installed elsewhere on the
system, this means the --include and --libs settings are
incompatible, since it will pick up headers that don't match
the libs. (This might be another consequence of the libs
being in a dir called lib64)

Thanks, MySQL, you muppets.

Looks like I might have to avoid using mysql_config and just
write the configury macro by hand. *sigh*