[mythtv-users] SVN 13224 - new error mytharchivehelper

[Paul Harrison]

A JM wrote:
> All was going well until I got a different error this time? Any ideas?
>
> cd mytharchivehelper && make -f Makefile
> make[2]: Entering directory
> `/home/mythtv/mythplugins/mytharchive/mytharchivehelper'
> g++ -c -pipe -Wall -W -fomit-frame-pointer -D_REENTRANT  -D_GNU_SOURCE
> -DPREFIX=\"\" -D_FILE_OFFSET_BITS=64 -DQT_NO_DEBUG -DQT_THREAD_SUPPORT
> -DQT_SHARED -DQT_TABLET_SUPPORT -I/usr/share/qt3/mkspecs/default -I.
> -I/include -I/usr/kde/3.3/include -I/include -I/include/mythtv
> -I/usr/include/qt3 -I/usr/X11R6/include -I/usr/X11R6/include -o main.o
> main.cpp
> main.cpp:29:28: error: ffmpeg/avcodec.h: No such file or directory
> main.cpp:30:29: error: ffmpeg/avformat.h: No such file or directory
> main.cpp:31:35: error: libmythtv/programinfo.h: No such file or directory
>
>   
It's definitely down to user error :-). Exactly what I'm not sure but 
the problem is configure hasn't got the right install prefix. The 
-DPREFIX=\"\" is the giveaway along with the -I/include/ entries. They 
should start with /usr or /usr/local depending on what install prefix 
you use. 9 times out of 10 this is caused by the user not compiling 
_and_ installing mythtv _before_ doing the plugins.

You have to install MythTV first so that the header files required to 
compile the plugins can be found. They use the installed headers *not* 
the headers in the mythtv source. The headers should be in 
'PREFIX/include/mythtv' Also the plugin's configure script needs access 
to a file called mythconfig.mak that contains many configure settings 
including the all important 'PREFIX=xxx' install prefix. This file is 
installed along with the headers in 
PREFIX/include/mythtv/mythconfig.mak'. If all is well after you run the 
plugins configure script you should have a sym link in your top level 
mythplugins source directory that points to the installed mythconfig.mak 
file.

This doesn't sound like your problem but another common problem is 
having two versions of myth installed using different install prefixes. 
It's common for packaged installs to use  '/usr' as the prefix but  the 
default when you compile from source is to install into 'usr/local'.

This is such a FAQ somebody should put some stuff into the docs so we 
can point people there the next time this comes up.

Paul H.