On Thu, Sep 19, 2002 at 02:53:37PM -0700, Wilfredo Sanchez wrote: > On Monday, September 16, 2002, at 06:00 PM, Greg Stein wrote: >... > > Yup. But try and build those *today* and have them still link against > > DB-3.3. You need the parallel install stuff. > > The problem isn't solved by making everyone use -lapr-1. You also > have to (as noted in the document Ben sent us) make everyone #include > <apr-1/foo.h>, otherwise you are linking to a library other than the > one your headers correspond to.
No... you put .../apr-1/ into INCLUDES, and people #include <foo.h> And before you speak up on the issue, let's check something out: $ apr-config apr-config --includes -I/usr/local/svn/include/apr-0 Looky there! It *already* does what you requested. > So unless you are going to do that as > well, I think the exercise is a waste of time, pretending to fix > something, but falling short in ways that could create some > interestingly hard to find bugs. Preaching to the choir. Did you take a look at the implementation? :-) > You also have to bump the version whenever the library is no longer > backwards-compatible, such as adding an argument to an existing > function, or deleting a function. Ahem. http://apr.apache.org/versioning.html And from apr_version.h: ... * * APR version numbering follows the guidelines specified in: * * http://apr.apache.org/versioning.html */ So it appears that we already have hard and fast rules on compatibility. > Now the drag is that if you upgrade APR, you have to go through all > your code and fix the #includes. That kinda sucks. If you use "apr-config --includes" (as you should be doing), then this does not apply. > So maybe encapsulating the whole install in versioned directories is > a better option. It is a possibility, but the FHS provides for distributed installations (e.g. into /usr or /usr/local) along with installations into /opt. I'm not sure what it recommends for libraries (e.g. is /opt just for apps?) Fred: how about if you take a look at the existing stuff, and see whether that works for you :-) Cheers, -g -- Greg Stein, http://www.lyra.org/
