mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-27 02:30:35 +00:00
61 lines
2.6 KiB
Text
61 lines
2.6 KiB
Text
These are some notes on our autotools setup, and some things to remember.
|
|
|
|
plugin Makefile.am:
|
|
- plugindir gets defined for you, don't set it in Makefile.am
|
|
- plugin_LTLIBRARIES should contain the name of every plugin,
|
|
starting with libgst and ending in .la
|
|
|
|
- put compile/link variables in the following order: CFLAGS, LIBADD, LDFLAGS
|
|
- order _CFLAGS and _LIBADD with the highest in the stack first;
|
|
e.g. $(GST_PLUGINS_BASE_LIBS) $(GST_LIBS) $(MUSICBRAINZ_LIBS)
|
|
this makes sure that the one you're most likely to be hacking on
|
|
(GStreamer) has its -L flags pointing to your hacking directory,
|
|
and comes first on the link line. If it were to come later and you
|
|
had the library installed in the same place as the dependency, it
|
|
would take that version instead
|
|
- DO NOT put any libraries in _LDFLAGS. Typically, _LDFLAGS should only
|
|
have $(GST_PLUGIN_LDFLAGS)
|
|
- when using gst-plugins-base libraries, use $(GST_PLUGINS_BASE_LIBS) then
|
|
add -lgst(library)-$(GST_MAJORMINOR). Example:
|
|
|
|
libgstsdlvideosink_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) \
|
|
-lgstvideo-$(GST_MAJORMINOR) \
|
|
-lgstaudio-$(GST_MAJORMINOR) \
|
|
-lgstinterfaces-$(GST_MAJORMINOR) \
|
|
$(SDL_LIBS)
|
|
|
|
|
|
- don't forget to use noinst_HEADERS if you have private headers
|
|
|
|
plugin configure.ac snippet:
|
|
- ORDER THEM ALPHABETICALLY PLEASE
|
|
- wrap your check in a block like this:
|
|
|
|
translit(dnm, m, l) AM_CONDITIONAL(USE_DEP, true)
|
|
GST_CHECK_FEATURE(DEP, [(dependency description)], (plug-in-name), [
|
|
(here go the checks)
|
|
])
|
|
- plug-in name is the name of the *plug-in*, not the element; ie, the
|
|
first column when running gst-inspect
|
|
|
|
- For the checks, in the simplest case, use something like:
|
|
GST_PKG_CHECK_MODULES(LIBOIL, liboil-0.3 >= 0.3.2)
|
|
This will:
|
|
- do the check
|
|
- show a decent message if it can't find it, without failing
|
|
- set HAVE_LIBOIL to yes or no
|
|
- set LIBOIL_CFLAGS and LBOIL_LIBS
|
|
- if you want to make sure configure fails when this dependency is missing,
|
|
use:
|
|
GST_PKG_CHECK_MODULES(LIBOIL, liboil-0.3 >= 0.3.2, yes)
|
|
|
|
- if your library does not come with a .pc file, you have to roll your own
|
|
check
|
|
|
|
pkg.m4: (last checked: version 0.20)
|
|
- was changed at some point to hide the error message from you, and error
|
|
out by default if no ACTION-IF-NOT-FOUND is given.
|
|
- caller is responsible for doing AC_MSG_RESULT if ACTION-IF-NOT-FOUND
|
|
is given
|
|
- for automake-1.6, AC_SUBST((PKG)_CFLAGS) and AC_SUBST((PKG)_LIBS) is not
|
|
done automatically. Starting from 1.7, it is. We require 1.7 now.
|