Hisham, I sent a pull request in GitHub regarding this subject.
Regarding the path issue: Yes the name of the lib in Windows is libpq.dll.
I saw the patterns in cfg.lua but there might be something in between that
is not working. Unfortunately I didn't have time to explore this problem in
depth.
---
Eric
2013/11/11 Hisham <h...@hisham.hm>
> On 10 November 2013 21:26, Eric Chiesse <echie...@gmail.com> wrote:
> >
> > Hi all,
> >
> > I've been having trouble installing luasql-postgres on Windows (Vista)
> due to a list of problems. The first 2 were related to luasql project:
> > 1 - Compilation error due to non-standard syntax
> > 2 - Rockspec depending on "pq" doesn't work on windows where "libpq"
> must be specified.
> >
> > Problem number 2 can be a shared problem (between luasql and LR) because
> I don't know if it is possible to indicate different names for a dependency
> based on the OS flavor.
> >
> > Now comes the LR problem.
> > I solved the problems described above locally and it was possible to
> build luasql-postgres. But then occured the runtime error:
> > 3 - "R6034. An application has made an attempt to load the C runtime
> library incorrectly. ..."
> >
> > After some research, I found that this error occurs due to the lack of a
> manifest which is necessary when a dll is linked against MSVCRT.lib (linker
> /MD option).
> > LR creates a command for embedding the manifest in the resulting dll (in
> "src/luarocks/build/builtin.lua") but it was not working for
> luasql-postgres because the final output is not a single dll but a dll
> inside a directory (luasql/postgres).
> > I also solved problem number 3 locally and now I'm able to use the
> luasql-postgres.
> >
> > I have 2 questions:
> > 1 - How can I send my modifications to be applied to LR?
>
> You can send a pull request on Github at
> https://github.com/keplerproject/luarocks or just send a patch here at
> the mailing list, whatever is more convenient to you (on our end, the
> pull request is preferred of course since it's less work to
> integrate.)
>
> > 2 - Related to problem number 2. How to deal with the differences in
> library search conventions in different OSs?
>
> LR should already be handling that, that's odd... take a look at
> external_deps_patterns (in `src/luarocks/cfg.lua`). On Windows,
> there's both "?.dll" and "lib?.dll" there... is the library file
> called libpq.lib, by any chance?
>
> Thanks,
>
> -- Hisham
>
>
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