Bug 232755 – sci-mathematics/glpk-4.29 with USE=iodbc wants libiodbc but does not get the .h files from the right place

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Ferris McCormick (RETIRED) 2008-07-23 14:27:43 UTC]

With USE=iodbc sci-mathematics/glpk-4.29 has a dependency on dev-db/libiodbc, and when it builds, it wants to #include sql.h and sqlext.h from this package.  The libiodbc package puts these files into /usr/include/iodbc, where glpk cannot find them because it does not -I/usr/include/iodbc.  However, if you also have dev-db/unixODBC installed, glpk picks up sql.h and sqlext.h from the unixODBC versions of them, because unixODBC puts them into /usr/include/sql.h, etc.

The failure is consistent across systems, but as a test, adding -I/usr/include/iodbc to CFLAGS cures the problem.

[Comment 1 Sébastien Fabbro (RETIRED) 2008-07-23 15:09:20 UTC]

Hi Ferris,

Good you caught this one. I personally never used odbc.
If I understand from wikipedia, libiodbc and unixODBC provide the same. If this is the case the dependency could be || too, add an 
append-cppflags $(pkg-config --cflags libiodbc),
only in libodbc case, and probably the flag to odbc.

Anyone has an idea why it's not a virtual?

[Comment 2 Ferris McCormick (RETIRED) 2008-07-23 15:50:21 UTC]

Yes, if I add
inherit flag-o-matic
to the ebuild then put
        use iodbc && append-cppflags $(pkg-config --cflags libiodbc)
inside the database check, thus:

    if use mysql || use iodbc; then
        myconf="--enable-dl"       
        use iodbc && append-cppflags $(pkg-config --cflags libiodbc)
    fi
everything works fine.

[Comment 3 Sébastien Fabbro (RETIRED) 2008-07-23 16:23:16 UTC]

Created attachment 161201 [details]
glpk-4.29.ebuild.patch

I would add something like this instead: either unixODBC or libiodbc.

[Comment 4 Ferris McCormick (RETIRED) 2008-07-23 17:07:08 UTC]

That works, no matter which odbc is installed.

[Comment 5 Sébastien Fabbro (RETIRED) 2008-07-23 17:36:50 UTC]

Ok, fixed in cvs. Thanks.