Commit graph

10 commits

Author SHA1 Message Date
Tim-Philipp Müller
b6411ae74c 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 14:45:56 +01:00
Tim-Philipp Müller
a4c2d1ea31 basecamerabinsrc: GST_EXPORT -> GST_BASE_CAMERA_BIN_SRC_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 12:29:08 +00:00
Tim-Philipp Müller
699452ef31 Remove obsolete Android build cruft
This is not needed any longer.
2015-04-26 18:59:32 +01:00
Sebastian Dröge
1318a97e0a gst: Update versioning 2012-04-04 14:44:34 +02:00
Sebastian Dröge
f291f87bb1 basecamerabinsrc: Add $(GST_PLUGINS_BASE_LIBS) to the linker flags 2012-03-27 09:36:24 +02:00
Thiago Santos
36fbb8eea4 basecamerabinsrc: remove redundant functions
gst_bin_get_by_interface should be enough for applications.
Haven't seen anyone using those other than wrappercamerabinsrc.
2011-12-22 16:17:56 -03:00
Thibault Saunier
17fd7ebcb4 android: make it ready for androgenizer
Remove the android/ top dir
Fixe the Makefile.am to be androgenized

To build gstreamer for android we are now using androgenizer which generates the needed Android.mk files.
Androgenizer can be found here: http://git.collabora.co.uk/?p=user/derek/androgenizer.git
2011-04-11 07:27:11 +02:00
Thiago Santos
0255584d90 camerabin2: Move preview helper functions to basecamerabinsrc
Move preview helper functions to baseacamerabinsrc so they can
be reused by multiple camerabin2 sources.
2011-03-10 08:42:00 -03:00
Tim-Philipp Müller
c78223fc9c basecamerabinsrc: fix libs order in Makefile.am 2011-01-03 23:47:33 +00:00
Thiago Santos
4938c2e9ea camerabin2: Move basecamerasrc to gst-libs
Move the base camera src class to gst-libs/gst/basecamerabinsrc to
allow it to be included from the tests.
2010-12-23 13:20:31 -03:00