undefined reference when linking grabber with a4.4.2 on linux

amarillion

I'm trying to build allegro 4.4.2 on linux (Ubuntu xenial), and I'm getting an undefined reference when linking grabber

Here is what I did:

#SelectExpand
  1apt-get install cmake \
  2  pkg-config \
  3  texinfo \
  4  libxext-dev \
  5  libx11-dev \
  6  libxpm-dev \
  7  libxt-dev \
  8  libxcursor-dev \
  9  libasound2-dev \
 10  oss4-dev \
 11  libxxf86dga-dev \
 12  libxxf86vm-dev \
 13  libgl1-mesa-dev \
 14  libglu1-mesa-dev \
 15  libpng-dev \
 16  zlib1g-dev \
 17  libvorbis-dev
 18
 19wget http://download.gna.org/allegro/allegro/4.4.2/allegro-4.4.2.tar.gz 
 20tar -zxf allegro-4.4.2.tar.gz
 21
 22mkdir -p allegro-4.4.2/Build/Debug
 23cd allegro-4.4.2/Build/Debug
 24cmake -DCMAKE_BUILD_TYPE=Debug ../..
 25make

Here is the error I get:

#SelectExpand
  1[ 91%] Building C object tools/CMakeFiles/aldat.dir/__/addons/jpgalleg/plugin/datjpeg.c.o
  2[ 91%] Linking C static library ../lib/libaldat.a
  3[ 91%] Built target aldat
  4Scanning dependencies of target grabber
  5[ 91%] Building C object tools/CMakeFiles/grabber.dir/grabber.c.o
  6[ 91%] Linking C executable grabber
  7../lib/libjpgalleg-debug.a(decode.c.o): In function `decode_baseline_block':
  8/home/builder/allegro-4.4.2/addons/jpgalleg/src/decode.c:562: undefined reference to `get_value'
  9/home/builder/allegro-4.4.2/addons/jpgalleg/src/decode.c:582: undefined reference to `get_value'
 10../lib/libjpgalleg-debug.a(decode.c.o): In function `decode_progressive_block':
 11/home/builder/allegro-4.4.2/addons/jpgalleg/src/decode.c:646: undefined reference to `get_value'
 12/home/builder/allegro-4.4.2/addons/jpgalleg/src/decode.c:700: undefined reference to `get_value'
 13collect2: error: ld returned 1 exit status
 14tools/CMakeFiles/grabber.dir/build.make:106: recipe for target 'tools/grabber' failed
 15make[2]: *** [tools/grabber] Error 1
 16CMakeFiles/Makefile2:2919: recipe for target 'tools/CMakeFiles/grabber.dir/all' failed
 17make[1]: *** [tools/CMakeFiles/grabber.dir/all] Error 2
 18Makefile:127: recipe for target 'all' failed
 19make: *** [all] Error 2

This seems to suggest a missing library when linking grabber, or maybe the wrong ordering of libraries. I tried to trace it down to the contents of tools/CMakeFiles/grabber.dir/link.txt

/usr/bin/cc   -W -Wall -Wno-unused-parameter -Wdeclaration-after-statement -g -DDEBUGMODE=1   CMakeFiles/grabber.dir/grabber.c.o  -o grabber -rdynamic ../lib/libaldat.a ../lib/libjpgalleg-debug.a ../lib/liballeg-debug.so.4.4.2 -lm -lpthread -lrt -lSM -lICE -lX11 -lXext -lXcursor -lXpm -lXxf86vm -ldl -Wl,-rpath,/home/martijn/allegro-4.4.2/Build/Debug/lib:

But I don't know what could be wrong here... Any ideas?

GullRaDriel

Where does that get_value come from ?
If maybe it comes from the allegro core library, then you should move ../lib/libjpgalleg-debug.a after ../lib/liballeg-debug.so.4.4.2 ?

EDIT: google gave me another answer:
https://sourceforge.net/p/alleg/bugs/398/

amarillion

Thanks, somehow my google foo was bad, because my searches didn't turn up that bug report.

Without this fix the out-of-the box experience of Allegro 4.4.2 is not great. Will there be a 4.4.2.1?

edit: the patch has been applied to git now. Looks like we'll have to get Allegro 4 from there for the time being.

Thread #616669. Printed from Allegro.cc