notmuch-0.16: realpath() compatibility issue; clang visibility problem

[Jani Nikula]

For the visibility issue please upgrade Notmuch.

BR,
Jani.

On Jan 4, 2014 2:26 PM, "Thomas Klausner" <tk at giga.or.at> wrote:
>
> Hi!
>
> I'm currently starting to try out notmuch-0.16 on NetBSD. It went off
> to a rocky start, since it segfaulted in the initial config setup.
>
> Debugging it I found that notmuch uses a glibc extension to realpath,
> allowing NULL as second argument.
>
> I've converted it to use a prepared buffer instead; attached is a
> possible patch that makes notmuch complete its setup phase for me, and
> adds inclusion of the header files suggested by the realpath man page
> on NetBSD. Please address this issue in some way in the next release.
>
> Additionally, when compiling with clang, there are issues with the
> visibility. The symptoms are:
>
> In file included from lib/database.cc:21:
> In file included from ./lib/database-private.h:33:
> ./lib/notmuch-private.h:479:8: error: visibility does not match previous
declaration
> array subscriptstruct visible _notmuch_string_list {
>        ^
> ./lib/notmuch-private.h:67:33: note: expanded from macro 'visible'
>  # define visible __attribute__((visibility("default")))
>                                 ^
> ./lib/notmuch-private.h:52:13: note: previous attribute is here
> #pragma GCC visibility push(hidden)
>             ^
>
> In file included from lib/parse-time-vrp.cc:23:
> In file included from ./lib/database-private.h:33:
> ./lib/notmuch-private.h:479:8: error: visibility does not match previous
declaration
> struct visible _notmuch_string_list {
>        ^
> ./lib/notmuch-private.h:67:33: note: expanded from macro 'visible'
> # define visible __attribute__((visibility("default")))
>                                 ^
> ./lib/notmuch-private.h:52:13: note: previous attribute is here
> #pragma GCC visibility push(hidden)
>             ^
> 1 warning generated.
> In file included from lib/directory.cc:21:
> ./lib/notmuch-private.h:479:8: error: visibility does not match previous
declaration
> struct visible _notmuch_string_list {
>        ^
> ./lib/notmuch-private.h:67:33: note: expanded from macro 'visible'
> # define visible __attribute__((visibility("default")))
>                                 ^
> ./lib/notmuch-private.h:52:13: note: previous attribute is here
> #pragma GCC visibility push(hidden)
>             ^
>
> and so on. I guess it is because the visibility differs between c and
> c++. I've disabled visibility locally, see second attached patch, but
> of course that's not a solution, just a workaround. Suggestions
> welcome.
>
> Thanks,
>  Thomas
>
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>
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