I have had a problem with mythtv-frontend not building for a while now, and managed to work it out last night.
The error was
(Could be a different file in that directory depending on what
The scripts seem to be finding /usr/X11R6, and using that for the includes instead of /usr/local/. When the individual Makefiles are generated from the .pro files, the .pro files include code to find any instances of /usr/local/include and remove them, but because the entry is /usr/X11R6/include, it doesn't find it. Then a later procedure changes the /usr/X11R6/include to /usr/local/include (resolving the symlink, perhaps?), but that happens too late for the .pro script to remove it.
The simple fix is to remove that /usr/X11R6 symlink. I don't think it has been needed for years.
The locations of the checks are ./mythtv/libs/libmythtv/libmythtv.pro, line 20; and ./mythtv/libs/libmyth/libmyth.pro, line 23. Interestingly, this code looks like it is supposed to shift these declarations to the end of the includes list using a POSTINC list, but this isn't happening.
It's nice when you work things like this out. I have sent an email to the maintainer in case they think that having the /usr/X11R6 link in place is a common enough configuration to require a fix to the port. Probably patching those two files would be the best idea.
Full error cascade:
The error was
Code:
audio/spdifencoder.h:35: error: 'AVCODEC_MAX_AUDIO_FRAME_SIZE' was not declared in this scope make -j does, full error string below to help searchers find it). I had long ago determined that this was because it was getting the ffmpeg includes from /usr/local/include instead of ../../external/FFmpeg, and that it was doing that because the command line listed -I/usr/local/include before -I../../external/FFmpeg. What I just worked out was why.The scripts seem to be finding /usr/X11R6, and using that for the includes instead of /usr/local/. When the individual Makefiles are generated from the .pro files, the .pro files include code to find any instances of /usr/local/include and remove them, but because the entry is /usr/X11R6/include, it doesn't find it. Then a later procedure changes the /usr/X11R6/include to /usr/local/include (resolving the symlink, perhaps?), but that happens too late for the .pro script to remove it.
The simple fix is to remove that /usr/X11R6 symlink. I don't think it has been needed for years.
The locations of the checks are ./mythtv/libs/libmythtv/libmythtv.pro, line 20; and ./mythtv/libs/libmyth/libmyth.pro, line 23. Interestingly, this code looks like it is supposed to shift these declarations to the end of the includes list using a POSTINC list, but this isn't happening.
It's nice when you work things like this out. I have sent an email to the maintainer in case they think that having the /usr/X11R6 link in place is a common enough configuration to require a fix to the port. Probably patching those two files would be the best idea.
Full error cascade:
Code:
audio/spdifencoder.h:35: error: 'AVCODEC_MAX_AUDIO_FRAME_SIZE' was not declared in this scope
audio/spdifencoder.h: In member function 'unsigned char* SPDIFEncoder::GetProcessedBuffer()':
audio/spdifencoder.h:22: error: 'm_buffer' was not declared in this scope
audio/spdifencoder.cpp: In constructor 'SPDIFEncoder::SPDIFEncoder(QString, int)':
audio/spdifencoder.cpp:27: error: 'm_buffer' was not declared in this scope
audio/spdifencoder.cpp:75: error: 'CodecID' was not declared in this scope
audio/spdifencoder.cpp:75: error: expected `;' before 'codec_id'
audio/spdifencoder.cpp:78: error: 'ff_codec_id_string' was not declared in this scope
audio/spdifencoder.cpp:78: error: expected primary-expression before '(' token
audio/spdifencoder.cpp:78: error: expected `)' before 'codec_id'
audio/spdifencoder.cpp: In member function 'int SPDIFEncoder::GetData(unsigned char*, int&)':
audio/spdifencoder.cpp:119: error: 'm_buffer' was not declared in this scope
audio/spdifencoder.cpp: In static member function 'static int SPDIFEncoder::funcIO(void*, unsigned char*, int)':
audio/spdifencoder.cpp:158: error: 'class SPDIFEncoder' has no member named 'm_buffer'
gmake[2]: *** [spdifencoder.o] Error 1
gmake[2]: *** Waiting for unfinished jobs....
In file included from audio/audiooutputdigitalencoder.h:9,
from audio/audiooutputbase.cpp:16:
audio/spdifencoder.h:35: error: 'AVCODEC_MAX_AUDIO_FRAME_SIZE' was not declared in this scope
audio/spdifencoder.h: In member function 'unsigned char* SPDIFEncoder::GetProcessedBuffer()':
audio/spdifencoder.h:22: error: 'm_buffer' was not declared in this scope
In file included from audio/audiooutputbase.cpp:16:
audio/audiooutputdigitalencoder.h: At global scope:
audio/audiooutputdigitalencoder.h:23: error: 'CodecID' has not been declared
audio/audiooutputbase.cpp: In member function 'virtual void AudioOutputBase::Reconfigure(const AudioSettings&)':
audio/audiooutputbase.cpp:645: error: 'CodecID' was not declared in this scope
audio/audiooutputbase.cpp:645: error: 'ff_codec_id_string' was not declared in this scope
gmake[2]: *** [audiooutputbase.o] Error 1
In file included from audio/audiooutputdigitalencoder.h:9,
from audio/audiooutputdigitalencoder.cpp:17:
audio/spdifencoder.h:35: error: 'AVCODEC_MAX_AUDIO_FRAME_SIZE' was not declared in this scope
audio/spdifencoder.h: In member function 'unsigned char* SPDIFEncoder::GetProcessedBuffer()':
audio/spdifencoder.h:22: error: 'm_buffer' was not declared in this scope
In file included from audio/audiooutputdigitalencoder.cpp:17:
audio/audiooutputdigitalencoder.h: At global scope:
audio/audiooutputdigitalencoder.h:23: error: 'CodecID' has not been declared
audio/audiooutputdigitalencoder.cpp:95: error: 'bool AudioOutputDigitalEncoder::Init' is not a static member of 'class AudioOutputDigitalEncoder'
audio/audiooutputdigitalencoder.cpp:95: error: 'CodecID' was not declared in this scope
audio/audiooutputdigitalencoder.cpp:95: error: expected primary-expression before 'int'
audio/audiooutputdigitalencoder.cpp:95: error: expected primary-expression before 'int'
audio/audiooutputdigitalencoder.cpp:95: error: expected primary-expression before 'int'
audio/audiooutputdigitalencoder.cpp:95: error: initializer expression list treated as compound expression
audio/audiooutputdigitalencoder.cpp:96: error: expected ',' or ';' before '{' token
gmake[2]: *** [audiooutputdigitalencoder.o] Error 1
