[PD] Gem undefined symbol: __pure_virtual

Hi,

(if you have seen similar, skip right to the end...)

I am trying to use gem-0.79 on pd-0.35-test11.linux. After some patching Gem compiles fine (sgiimage uses string instead of bstring, randomF.cpp has some invalid macro).

$ uname -mrsp Linux 2.4.18-pre9 i586 unknown $ gcc --version 2.95.3 $ pwd /home/rfigura/tmp/gem/src/Objects

#### Linking is however not that easy. The Makefile command is like #### this: $ ld -shared -L/usr/X11R6/lib -o ../../Gem.pd_linux *.o
-lGLU -lGL -lm
-L../AuxLibs/Jpeg -ljpeg -L../AuxLibs/tiff -ltiff
-L../AuxLibs/gltt -lgltt -L../AuxLibs/gltt/freetype/lib -lttf
-L../AuxLibs/td -ltd -L../AuxLibs/particle -lparticle
-L../AuxLibs/liborb -lorb
-lX11 -lXext -ldl ld: final link failed: Bad value #### if i would only know what this message means - except of "failed".

#### It is an error caused by most AuxLibs: $ ld -shared -L/usr/X11R6/lib -o ../../Gem.pd_linux *.o
-lGLU -lGL -lm
-L../AuxLibs/gltt -lgltt -L../AuxLibs/gltt/freetype/lib -lttf
-lX11 -lXext -ldl

#### Works. Let's check this Binary... pd says: undefined symbol: __builtin_delete

#### __builtin_delete is a libc function. We need libc. gcc handles this $ gcc -shared -L/usr/X11R6/lib -o ../../Gem.pd_linux *.o
-lGLU -lGL -lm
-L../AuxLibs/gltt -lgltt -L../AuxLibs/gltt/freetype/lib -lttf
-lX11 -lXext -ldl

#### as to be expected pd says: undefined symbol: TIFFOpen

#### Linkage fails if i include some auxlibs. Lets see which file is #### used: $ strace ld -shared -L/usr/X11R6/lib -o ../../Gem.pd_linux *.o
-lGLU -lGL -lm
-L../AuxLibs/gltt -lgltt -L../AuxLibs/gltt/freetype/lib -lttf -lX11 -lXext -ldl 2>&1 | grep open | grep tiff [...] open("../AuxLibs/tiff/libtiff.a", O_RDONLY)

#### Okay. I have libtiff installed on my machine anyway (its the same #### version) so let's use that one... Next error is about jpeg. I also #### have that one installed...

gcc -shared -L/usr/X11R6/lib -o ../../Gem.pd_linux *.o
-lGLU -lGL -lm
-ljpeg -ltiff
-L../AuxLibs/gltt -lgltt -L../AuxLibs/gltt/freetype/lib -lttf
-lX11 -lXext -ldl

#### pd says: undefined symbol: sqrt

#### this is not fair. There *is* an -lm. Do we have a redefinition #### inside some obscure lib? $ for i in find ../AuxLibs/ -name "lib*.a" ; do objdump -t $i | grep sqrt && echo in $i ; done 00000000 F *UND* 00000000 sqrt in ../AuxLibs/td/libtd.a

#### hand-make td $ cd ../AuxLibs/td/ $ cp Makefile.irix Makefile.linux $ vi Makefile.linux $ diff Makefile.irix Makefile.linux 6,8c6,8 < CC = cc

< CFLAGS = -O

CC = gcc CFLAGS = -O2

$ env PLATFORM=linux make [...]

$ cd ../../Objects $ gcc -shared -L/usr/X11R6/lib -o ../../Gem.pd_linux *.o
-lGLU -lGL -lm
-ltiff -ljpeg
-L../AuxLibs/gltt -lgltt
-L../AuxLibs/gltt/freetype/lib -lttf
-L../AuxLibs/td -ltd
-lX11 -lXext -ldl #### ...but the error persists. $ ls -l /usr/lib/libm.* -rw-r--r-- 1 root root 470774 Dec 27 15:37 /usr/lib/libm.a lrwxrwxrwx 1 root root 19 Dec 29 22:51 /usr/lib/libm.so -> ../../lib/libm.so.6 $ ld -verbose -shared -L/usr/X11R6/lib -o ../../Gem.pd_linux *.o
-lGLU -lGL -lm -ltiff -ljpeg
-L../AuxLibs/gltt -lgltt -L../AuxLibs/gltt/freetype/lib -lttf
-L../AuxLibs/td -ltd -lX11 -lXext -ldl | grep libm attempt to open /usr/lib/libm.so failed attempt to open /usr/lib/libm.a succeeded $ objdump -t /usr/lib/libm.a | grep " sqrt$" 00000000 w F .text 0000006a sqrt #### why should i use the shared object (.so) instead? $ gcc -shared -L/usr/X11R6/lib -o ../../Gem.pd_linux *.o
-lGLU -lGL /lib/libm.so.6 -ltiff -ljpeg
-L../AuxLibs/gltt -lgltt -L../AuxLibs/gltt/freetype/lib -lttf
-L../AuxLibs/td -ltd -lX11 -lXext -ldl

#### pd error is replaced (should i be happy?). pd says: undefined symbol: orb_open $ cd ../AuxLibs/liborb/ $ make # makefile looks so good $ cd ../../Objects $ gcc -shared -L/usr/X11R6/lib -o ../../Gem.pd_linux *.o
-lGLU -lGL /lib/libm.so.6 -ltiff -ljpeg
-L../AuxLibs/gltt -lgltt -L../AuxLibs/gltt/freetype/lib -lttf
-L../AuxLibs/td -ltd -L../AuxLibs/liborb -lorb -lX11 -lXext -ldl #### pd says: undefined symbol: pColorD__Ff11PDomainEnumfffffffff

#### but we no know how to find it (let's see it once again) $ for i in find ../AuxLibs/ -name "lib*.a" ; do objdump -t $i | grep sqrt && echo in $i ; done #### None? And who is using it? $ for i in ls *.o ; do objdump -t $i | grep pColorD__Ff11PDomainEnumfffffffff && echo in $i ; done 00000000 *UND* 00000000 pColorD__Ff11PDomainEnumfffffffff in part_color.o 00000000 *UND* 00000000 pColorD__Ff11PDomainEnumfffffffff in particle.o #### Ahum. I be linking many unnecessary object files? [...removed lengthy checking...] #### - No.

#### Let's hand-make particle. #### Good Makefile but particle uses c++. Will we need libc++? $ make g++ -O2 -I. -I.. -I/usr/include -I/usr/include/GL -c system.cpp system.cpp:100: name lookup of i' changed for new ANSIfor' scoping system.cpp:139: name lookup of i' changed for new ANSIfor' scoping #### invisible i. $ cp system.cpp system.cpp.bak $ vi system.cpp $ diff system.cpp.bak system.cpp 100c100

< for(i=group_count; i<new_count; i++)

  for(int i=group_count; i<new_count; i++)

139c139

< for(i=list_count; i<new_count; i++)

  for(int i=list_count; i<new_count; i++)

$ make $ cd ../../Objects #### i don't have libglut installed so the pspray demo won't work.

#### make libttf $ cd ../AuxLibs/gltt/freetype/lib $ make

#### gltt depends on ttf... remake it. FTFont.h:1: ANSI C++ forbids declaration `Copyright' with no type #### cough cough. This is not a c++ file. http://ftp.mayn.de/pub/unix/graphic/moonlight/gltt-1.8.tar.gz #### $ pwd /home/rfigura/tmp/gem/src/AuxLibs/ $ tar xzvf gltt-1.8.tar.gz $ cd gltt-1.8 $ ln -s ../freetype . $ ln -s ../Makefile . $ make libgltt.a $ cp libgltt.a ..

#### pd says: undefined symbol: __pure_virtual

#### we need g++ to link? g++ -shared -L/usr/X11R6/lib -o ../../Gem.pd_linux *.o
-lGLU -lGL /lib/libm.so.6 -ljpeg -ltiff
-L../AuxLibs/gltt -lgltt -L../AuxLibs/gltt/freetype/lib -lttf
-L../AuxLibs/td -ltd -L../AuxLibs/particle -lparticle
-L../AuxLibs/liborb -lorb
-lX11 -lXext -ldl #### Nope, pd is still persisting about __pure_virtual

#### Does someone understand what is going on here, please? I am quite frustrated. I've been for a week on this. I...

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Greetings

• Robert Figura