Can't compile

[compilercarl]

I made a stack overflow thread about this:
https://stackoverflow.com/questions/538 ... build-fail

I can't figure out why my build of VLC is failing. I am on Ubuntu 18.

% git clone git://git.videolan.org/vlc.git
% cd vlc
% ./bootstrap

make clean

./configure --disable-lua --disable-swscale --disable-alsa --disable-chromecast --disable-fontconfig

make

...

codec/jpeg.c: In function ‘DecodeBlock’:
codec/jpeg.c:501:16: warning: variable ‘p_row_pointers’ might be clobbered by ‘longjmp’ or ‘vfork’ [-Wclobbered]
JSAMPARRAY p_row_pointers = NULL;
^~~~~~~~~~~~~~
CCLD libjpeg_plugin.la
CC codec/libsdl_image_plugin_la-sdl_image.lo
CCLD libsdl_image_plugin.la
CC codec/libxwd_plugin_la-xwd.lo
CCLD libxwd_plugin.la
CC codec/liblibass_plugin_la-libass.lo
CCLD liblibass_plugin.la
/usr/bin/ld: /root/vlc-3.0.4/contrib/x86_64-linux-gnu/lib/libfontconfig.a(fcxml.o): in function `FcConfigMessage':
/root/vlc-3.0.4/contrib/native/fontconfig/src/fcxml.c:573: undefined reference to `xmlSAX2GetLineNumber'
/usr/bin/ld: /root/vlc-3.0.4/contrib/native/fontconfig/src/fcxml.c:576: undefined reference to `xmlSAX2GetLineNumber'
/usr/bin/ld: /root/vlc-3.0.4/contrib/x86_64-linux-gnu/lib/libfontconfig.a(fcxml.o): in function `IA__FcConfigParseAndLoad':
/root/vlc-3.0.4/contrib/native/fontconfig/src/fcxml.c:3309: undefined reference to `xmlCreatePushParserCtxt'
/usr/bin/ld: /root/vlc-3.0.4/contrib/native/fontconfig/src/fcxml.c:3348: undefined reference to `xmlParseChunk'
/usr/bin/ld: /root/vlc-3.0.4/contrib/native/fontconfig/src/fcxml.c:3362: undefined reference to `xmlFreeParserCtxt'
/usr/bin/ld: /root/vlc-3.0.4/contrib/native/fontconfig/src/fcxml.c:3354: undefined reference to `xmlCtxtGetLastError'

Any ideas what I did wrong here? It seems like the module in question should fail to build in this case as I disabled fontconfig.

root@fuzzbot:~/vlc-3.0.4# apt-get install libfontconfig
Reading package lists... Done
Building dependency tree
Reading state information... Done
Note, selecting 'libfontconfig1' instead of 'libfontconfig'
libfontconfig1 is already the newest version (2.13.0-5ubuntu3).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@fuzzbot:~/vlc-3.0.4#

I tried in vain to find VLC's official bug tracker for this kind of thing. I found bug trackers for literally every subproject of VLC but the main project that I am trying to build. If anyone knows the proper channels to ask the VLC people about this, let me know.

Now as another weird thing, no matter what LUA package I install, VLC doesn't like it:
checking for lualib.h... no
checking for luaL_newstate in -llua5.2 ... no
checking for luaL_newstate in -llua5.1 ... no
checking for luaL_newstate in -llua51 ... no
checking for luaL_newstate in -llua ... no

I am at a bit of a loss here. Do builds of VLC work on Ubuntu 18? I want to build the project from scratch, and I've following the directions in the wiki. What am I missing here?

[Rémi Denis-Courmont]

I suspect that nobody tried to compile FontConfig from contribs on Linux.

[compilercarl]

So any tips for what I should do to get it building?

I thought VLC is meant to be built on Linux an all cases anyway. The wiki says it's meant to be cross compiled to window from Linux.

Who can I get in touch with who actually knows how to build the thing?

[Rémi Denis-Courmont]

There is a whole article on the wiki dedicated to compiling natively on Linux...

[unidan]

Hi,

(For thing like compiling for windows, you can look at the docker image and extras/package/win32/build.sh)

For your issue, can you determine why fontconfig is built in your contrib in the first place ? it is not automatically built by the generated configure script.

[compilercarl]

There is a whole article on the wiki dedicated to compiling natively on Linux..

yes, I got to where I am following that article.

For your issue, can you determine why fontconfig is built in your contrib in the first place ? it is not automatically built by the generated configure script.

I posted my configure invocation in the OP:
./configure --disable-lua --disable-swscale --disable-alsa --disable-chromecast --disable-fontconfig

I have no idea why the generated makefile still depends on fontconfig, or why fontconfig is being built. I haven't deviated from the "official" Linux instructions other than to add the "disable" statements into configure. I only had to add those because I can't figure out how to add dependencies to satisfy your configure script. As I said in the OP, I've installed about 8 different versions of LUA and none of theme make your configure script happy.

[Rémi Denis-Courmont]

Because libass depends on FontConfig.

[compilercarl]

By following advice on stack overflow (the one I linked in OP) I got some dependencies to install but enough to make the build work.

Specifically:

find /etc/apt/sources.list /etc/apt/sources.list.d/ \
-type f -name "*.list" -not -name debsrc.list \
-exec echo sed -e 's|^deb |deb-src |' {} + > /etc/apt/sources.list.d/debsrc.list

apt-get build-dep vlc

Now, in the root repository folder I get the old XML error when I use "make" :
ake[3]: Leaving directory '/root/vlc-3.0.4/src'
make[2]: Leaving directory '/root/vlc-3.0.4/src'
Making all in modules
make[2]: Entering directory '/root/vlc-3.0.4/modules'
make all-recursive
make[3]: Entering directory '/root/vlc-3.0.4/modules'
Making all in .
make[4]: Entering directory '/root/vlc-3.0.4/modules'
CCLD liblibass_plugin.la
/usr/bin/ld: /root/vlc-3.0.4/contrib/x86_64-linux-gnu/lib/libfontconfig.a(fcxml.o): in function `FcConfigMessage':
/root/vlc-3.0.4/contrib/native/fontconfig/src/fcxml.c:573: undefined reference to `xmlSAX2GetLineNumber'
/usr/bin/ld: /root/vlc-3.0.4/contrib/native/fontconfig/src/fcxml.c:576: undefined reference to `xmlSAX2GetLineNumber'
/usr/bin/ld: /root/vlc-3.0.4/contrib/x86_64-linux-gnu/lib/libfontconfig.a(fcxml.o): in function `IA__FcConfigParseAndLoad':
/root/vlc-3.0.4/contrib/native/fontconfig/src/fcxml.c:3309: undefined reference to `xmlCreatePushParserCtxt'
/usr/bin/ld: /root/vlc-3.0.4/contrib/native/fontconfig/src/fcxml.c:3348: undefined reference to `xmlParseChunk'
/usr/bin/ld: /root/vlc-3.0.4/contrib/native/fontconfig/src/fcxml.c:3362: undefined reference to `xmlFreeParserCtxt'
/usr/bin/ld: /root/vlc-3.0.4/contrib/native/fontconfig/src/fcxml.c:3354: undefined reference to `xmlCtxtGetLastError'
collect2: error: ld returned 1 exit status
make[4]: *** [Makefile:15944: liblibass_plugin.la] Error 1
make[4]: Leaving directory '/root/vlc-3.0.4/modules'
make[3]: *** [Makefile:27359: all-recursive] Error 1
make[3]: Leaving directory '/root/vlc-3.0.4/modules'
make[2]: *** [Makefile:12457: all] Error 2
make[2]: Leaving directory '/root/vlc-3.0.4/modules'
make[1]: *** [Makefile:1533: all-recursive] Error 1
make[1]: Leaving directory '/root/vlc-3.0.4'
make: *** [Makefile:1418: all] Error 2

and in contrib I got this build failure:
el-amd64.o
/bin/bash ../libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../src -I../src -I/root/vlc-3.0.4/contrib/x86_64-linux-gnu/include -I/root/vlc-3.0.4/contrib/x86_64-linux-gnu/include -I/root/vlc-3.0.4/contrib/x86_64-linux-gnu/include -g -O2 -fvisibility=hidden -Wall -c -o rijndael-ssse3-amd64.lo rijndael-ssse3-amd64.c
libtool: compile: gcc -DHAVE_CONFIG_H -I. -I.. -I../src -I../src -I/root/vlc-3.0.4/contrib/x86_64-linux-gnu/include -I/root/vlc-3.0.4/contrib/x86_64-linux-gnu/include -I/root/vlc-3.0.4/contrib/x86_64-linux-gnu/include -g -O2 -fvisibility=hidden -Wall -c rijndael-ssse3-amd64.c -fPIC -DPIC -o rijndael-ssse3-amd64.o
In file included from /usr/include/features.h:424,
from /usr/include/x86_64-linux-gnu/bits/libc-header-start.h:33,
from /usr/include/stdio.h:27,
from rijndael-ssse3-amd64.c:38:
rijndael-ssse3-amd64.c: In function ‘_gcry_aes_ssse3_do_setkey’:
/usr/include/x86_64-linux-gnu/bits/string_fortified.h:31:1: error: inlining failed in call to always_inline ‘memcpy’: target specific option mismatch
__NTH (memcpy (void *__restrict __dest, const void *__restrict __src,
^~~~~
rijndael-ssse3-amd64.c:175:3: note: called from here
memcpy(&ctx->keyschdec32[0][0], key, keybits / ;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
make[2]: *** [Makefile:756: rijndael-ssse3-amd64.lo] Error 1
make[2]: Leaving directory '/root/vlc-3.0.4/contrib/native/gcrypt/cipher'
make[1]: *** [Makefile:487: install-recursive] Error 1
make[1]: Leaving directory '/root/vlc-3.0.4/contrib/native/gcrypt'
make: *** [../../contrib/src/gcrypt/rules.mak:74: .gcrypt] Error 2
root@fuzzbot:~/vlc-3.0.4/contrib/native#

So what's holding me back now?

[Rémi Denis-Courmont]

Same as before: you are getting some libraries from contrib that are not usually built from contrib on Linux. So you hit all the bugs that nobody ever sees.