Atte André Jensen wrote:

Hi

I took the code found here http://iem.kug.ac.at/pd/externals-HOWTO/node3.html#SECTION000360000000000000... placed it in a file helloworld.c, but got:

atte@ajstrup:~/music/synth/pd/externals/atte$ gcc helloworld.c

oops, an external is no executable but a dll, you have to compile/link it differently. see http://pure-data.cvs.sourceforge.net/pure-data/doc/tutorials/externals-howto...

mfg.ard IOhannes

Atte André Jensen wrote:

Hi

I took the code found here http://iem.kug.ac.at/pd/externals-HOWTO/node3.html#SECTION000360000000000000... placed it in a file helloworld.c, but got:

atte@ajstrup:~/music/synth/pd/externals/atte$ gcc helloworld.c /usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../lib/crt1.o: In function _start': ../sysdeps/i386/elf/start.S:115: undefined reference tomain' /tmp/ccuN3zCm.o: In function helloworld_bang': helloworld.c:(.text+0xe): undefined reference topost' /tmp/ccuN3zCm.o: In function helloworld_new': helloworld.c:(.text+0x23): undefined reference topd_new' /tmp/ccuN3zCm.o: In function helloworld_setup': helloworld.c:(.text+0x3d): undefined reference togensym' helloworld.c:(.text+0x6d): undefined reference to class_new' helloworld.c:(.text+0x89): undefined reference toclass_addbang' collect2: ld returned 1 exit status

I must have done something quite wrong...

This is under debian/linux, gcc version 4.1.2, pd 0.40-2.

I believe the file m_pd.h is to be found: atte@ajstrup:~/music/synth/pd/externals/atte$ slocate m_pd.h /usr/local/include/m_pd.h /home/atte/software/pd/pd-0.40-2/src/m_pd.h

Hi Atte, You're making a library, not an executable.

Try this:

gcc -o helloworld.o -c helloworld.c

then

ld -export_dynamic -shared -o helloworld.pd_linux

-c.