Commit graph

13 commits

Author SHA1 Message Date
Tim-Philipp Müller
dc29bc4e13 libs: fix API export/import and 'inconsistent linkage' on MSVC
For each lib we build export its own API in headers when we're
building it, otherwise import the API from the headers.

This fixes linker warnings on Windows when building with MSVC.

The problem was that we had defined all GST_*_API decorators
unconditionally to GST_EXPORT. This was intentional and only
supposed to be temporary, but caused linker warnings because
we tell the linker that we want to export all symbols even
those from externall DLLs, and when the linker notices that
they were in external DLLS and not present locally it warns.

What we need to do when building each library is: export
the library's own symbols and import all other symbols. To
this end we define e.g. BUILDING_GST_FOO and then we define
the GST_FOO_API decorator either to export or to import
symbols depending on whether BUILDING_GST_FOO is set or not.
That way external users of each library API automatically
get the import.

While we're at it, add new GST_API_EXPORT in config.h and use
that for GST_*_API decorators instead of GST_EXPORT.

The right export define depends on the toolchain and whether
we're using -fvisibility=hidden or not, so it's better to set it
to the right thing directly than hard-coding a compiler whitelist
in the public header.

We put the export define into config.h instead of passing it via the
command line to the compiler because it might contain spaces and brackets
and in the autotools scenario we'd have to pass that through multiple
layers of plumbing and Makefile/shell escaping and we're just not going
to be *that* lucky.

The export define is only used if we're compiling our lib, not by external
users of the lib headers, so it's not a problem to put it into config.h

Also, this means all .c files of libs need to include config.h
to get the export marker defined, so fix up a few that didn't
include config.h.

This commit depends on a common submodule commit that makes gst-glib-gen.mak
add an #include "config.h" to generated enum/marshal .c files for the
autotools build.

https://bugzilla.gnome.org/show_bug.cgi?id=797185
2018-09-24 08:45:34 +01:00
Nirbheek Chauhan
a9cab426d0 meson: Maintain macOS ABI through dylib versioning
Requires Meson 0.48, but the feature will be ignored on older versions
so it's safe to add it without bumping the requirement.

Documentation:
https://github.com/mesonbuild/meson/blob/master/docs/markdown/Reference-manual.md#shared_library
2018-08-31 14:40:43 +05:30
Bastian Köcher
efa9bdccf9 meson: fix install dir for generated header files
Nixos installs into a non-standard includedir, so need
to take account of the 'includedir' option instead of
just hard-coding 'include' here.

https://bugzilla.gnome.org/show_bug.cgi?id=794856
2018-08-10 12:43:38 +01:00
Nirbheek Chauhan
eadedc68f8 meson: Add feature options for all plugins
GL dependency detection is still automagic.

https://bugzilla.gnome.org/show_bug.cgi?id=795107
2018-07-27 18:42:11 +05:30
Tim-Philipp Müller
a3a9bcd468 meson: rtsp now also depends on libgstbase 2018-06-29 10:54:36 +01:00
Alessandro Decina
345aa2cd9e meson: libs: use gnome.mkenums_simple() to generate enumtypes files
This way we no longer need custom wrapper scripts or template files.
2018-03-22 13:15:35 +00:00
Tim-Philipp Müller
12b24fbba0 rtsp: GST_EXPORT -> GST_RTSP_API
We need different export decorators for the different libs.
For now no actual change though, just rename before the release,
and add prelude headers to define the new decorator to GST_EXPORT.
2018-03-13 12:16:42 +00:00
Havard Graff
43985b363d meson: remove vs_module_defs
GST_EXPORT should handle it.
2017-10-05 13:53:14 +01:00
Rico Tzschichholz
07a427b403 meson: Pass --c-include accordingly to GIR builds 2017-04-13 12:23:32 +01:00
Thibault Saunier
30b3055780 rtsp: Include GstSdp-1.0.gir when generating the gir
It is actually needed as we need some symbols. We do not link
to libgstsdp as the user of the lib should do it (same with
autotools build).

This reverts previous commit
2016-11-10 17:43:38 -03:00
Thibault Saunier
de6f4f0c7f libs:rtsp: Remove wrong dependency on Sdp for the gir file 2016-11-10 16:37:39 -03:00
Thibault Saunier
6917cb629e meson: Generate girs
https://bugzilla.gnome.org/show_bug.cgi?id=773944
2016-11-09 18:06:19 -03:00
Nirbheek Chauhan
5c4f4ac1bd Add support for Meson as alternative/parallel build system
https://github.com/mesonbuild/meson

With contributions from:

Tim-Philipp Müller <tim@centricular.com>
Jussi Pakkanen <jpakkane@gmail.com> (original port)

Highlights of the features provided are:
* Faster builds on Linux (~40-50% faster)
* The ability to build with MSVC on Windows
* Generate Visual Studio project files
* Generate XCode project files
* Much faster builds on Windows (on-par with Linux)
* Seriously fast configure and building on embedded

... and many more. For more details see:

http://blog.nirbheek.in/2016/05/gstreamer-and-meson-new-hope.html
http://blog.nirbheek.in/2016/07/building-and-developing-gstreamer-using.html

Building with Meson should work on both Linux and Windows, but may
need a few more tweaks on other operating systems.
2016-08-20 11:09:51 +01:00