Are there any other libs in the same place as libgnustep-base.so?

[font=monaco,courier]find /usr/lib -type f -name '*.so' | xargs nm | grep objc_lookup_class[/font] will at least tell you if any of the libraries in /usr/lib define objc_lookup_class. Probably also worth running a similar command on /usr/GNUstep/System/Libraries .

For /usr/lib, it prints a bunch of lines saying 'no symbols'

When I tried the second one, it printed a line saying
'nm: a.out: No such file or directory.'

So I then ran nm on libgnustep-base.so and piped it thru grep, and it returned this:

Quote: U objc_lookup_class

Now, trying again:

Quote:steven@hplmss1:~/war$ gcc -lgnustep-base -lobjc Card.m CardStack.m main.m
Card.m:9:2: warning: #import is obsolete, use an #ifndef wrapper in the header file
CardStack.m:9:2: warning: #import is obsolete, use an #ifndef wrapper in the header file
main.m:1:2: warning: #import is obsolete, use an #ifndef wrapper in the header file
/usr/GNUstep/System/Libraries/powerpc/linux-gnu/gnu-gnu-gnu/libgnustep-base.so: undefined reference to `dlerror'
/usr/GNUstep/System/Libraries/powerpc/linux-gnu/gnu-gnu-gnu/libgnustep-base.so: undefined reference to `ceil'
/usr/GNUstep/System/Libraries/powerpc/linux-gnu/gnu-gnu-gnu/libgnustep-base.so: undefined reference to `floor'
/usr/GNUstep/System/Libraries/powerpc/linux-gnu/gnu-gnu-gnu/libgnustep-base.so: undefined reference to `dlclose'
/usr/GNUstep/System/Libraries/powerpc/linux-gnu/gnu-gnu-gnu/libgnustep-base.so: undefined reference to `rint'
/usr/GNUstep/System/Libraries/powerpc/linux-gnu/gnu-gnu-gnu/libgnustep-base.so: undefined reference to `dlopen'
/usr/GNUstep/System/Libraries/powerpc/linux-gnu/gnu-gnu-gnu/libgnustep-base.so: undefined reference to `pow'
/usr/GNUstep/System/Libraries/powerpc/linux-gnu/gnu-gnu-gnu/libgnustep-base.so: undefined reference to `dlsym'
collect2: ld returned 1 exit status
steven@hplmss1:~/war$

Looks like I'm getting there.

I'll try adding -ldl to the command line.

Quote:steven@hplmss1:~/war$ gcc -lgnustep-base -lobjc -ldl Card.m CardStack.m main.m
Card.m:9:2: warning: #import is obsolete, use an #ifndef wrapper in the header file
CardStack.m:9:2: warning: #import is obsolete, use an #ifndef wrapper in the header file
main.m:1:2: warning: #import is obsolete, use an #ifndef wrapper in the header file
/usr/GNUstep/System/Libraries/powerpc/linux-gnu/gnu-gnu-gnu/libgnustep-base.so: undefined reference to `ceil'
/usr/GNUstep/System/Libraries/powerpc/linux-gnu/gnu-gnu-gnu/libgnustep-base.so: undefined reference to `floor'
/usr/GNUstep/System/Libraries/powerpc/linux-gnu/gnu-gnu-gnu/libgnustep-base.so: undefined reference to `rint'
/usr/GNUstep/System/Libraries/powerpc/linux-gnu/gnu-gnu-gnu/libgnustep-base.so: undefined reference to `pow'
collect2: ld returned 1 exit status
steven@hplmss1:~/war$

Gah! Down to four errors. Where would the above be?
Thanks a bunch,
Steven

-lm

WOOHOO!
It works! Now, can I have all of those -l parameters as the default or something? I don't want to have to write them over and over again.
Thanks a bunch OSC.
Steven

You only need them in the linking command, not in the commands to compile individual source files...

Yeah, but then anytime I want an updated executable, I have to do that :/
Any way to do it better?
Steven

Put it in a Makefile!

I haven't really used makefiles, and the size of my project doesn't seem to really warrant learning it. I've decided to alias it to something like occ.
Steven

It's always worth having a makefile.

Really? Why?

Because even when you've only got one source file, it's quicker to type make than it is to type gcc -g -c -Wall -W -Wno-unused-parameter -Werror -Os -I/usr/X11R6/include main.c; gcc -o Executable main.o -L/usr/X11R6/lib -lGL -lGLU -lglut -lX11 -lm, and when you've got more than one file keeping track of dependencies and what needs to be rebuilt makes such a huge improvement to compile times that it's pointless to avoid the makefile...