[vlc-devel] Creating a module

[John Hanks]

I'm trying to learn how to add modules to the vlc player.  I'm new to 
working with vlc and this mailing list seemed to be the closest match 
for what I was looking for (I did not see one specifically referencing 
'modules').  If I am posting this to the wrong list, please excuse my 
ignorance and point me to the correct place.

I tried following the instructions on the page 
'https://wiki.videolan.org/Hacker_Guide/How_To_Write_a_Module/'. I 
copied the code at the top into hello.c and put the file in the 
modules/control directory.

Following the instructions under 'Compiling your module', I added the 
following lines to Makefile.am in the same directory:

libhello_plugin_la_SOURCES=  hello.c
libhello_plugin_la_CFLAGS=  $(AM_CFLAGS)
libhello_plugin_la_LIBADD=  $(AM_LIBADD)
libhello_plugin_la_DEPENDENCIES=
# Always compile the hello module:
libvlc_LTLIBRARIES+=  libhello_plugin.la When I go back to the 'top' and run 'make', I get these errors: 
make[2]: Entering directory '/home/vsi/code/vlc3/vlc-3.0.8/modules' cd 
.. && /bin/bash /home/vsi/code/vlc3/vlc-3.0.8/autotools/missing 
automake-1.16 --foreign modules/Makefile modules/control/Makefile.am:76: 
error: libvlc_LTLIBRARIES must be set with '=' before using '+=' 
modules/Makefile.am:32: 'modules/control/Makefile.am' included from here 
modules/control/Makefile.am:76: error: 'libvlc_LTLIBRARIES' is used but 
'libvlcdir' is undefined modules/Makefile.am:32: 
'modules/control/Makefile.am' included from here 
modules/control/Makefile.am:71: warning: variable 
'libhello_plugin_la_SOURCES' is defined but no program or 
modules/control/Makefile.am:71: library has 'libhello_plugin_la' as 
canonical name (possible typo) modules/Makefile.am:32: 
'modules/control/Makefile.am' included from here 
modules/control/Makefile.am:73: warning: variable 
'libhello_plugin_la_LIBADD' is defined but no program or 
modules/control/Makefile.am:73: library has 'libhello_plugin_la' as 
canonical name (possible typo) modules/Makefile.am:32: 
'modules/control/Makefile.am' included from here 
modules/control/Makefile.am:74: warning: variable 
'libhello_plugin_la_DEPENDENCIES' is defined but no program or 
modules/control/Makefile.am:74: library has 'libhello_plugin_la' as 
canonical name (possible typo) modules/Makefile.am:32: 
'modules/control/Makefile.am' included from here Makefile:12544: recipe 
for target 'Makefile.in' failed It seems to have an error with every 
line I added except the comment. What am I doing wrong? John

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