undefined reference to a function

Hi,

i need to work with images, so I downloaded GDLibrary.
It is in one directory, in another one I have my .c file.

In my .c file I import the library with a sentence like
#include "../thaPath/gd.h"

In my .c I saw that I have no problems using (declaring) types defined in gd.h,
but when I try to use functiones defined there...I got the "undefined reference to..." error message.

I am working under a Red Hat Linux 9 in case the information is worth....

Thanks in advance for any suggestion...

It sounds like you're not linking in the library. If you're using gcc, look at the -l switch.

Thank you very much!
At this moment I am at work so I cant try what you suggests, but it sounds very probable.

Unfortunately I still doesnt work...

I tell you my situation.

Installed GDLibrary package, running ./configure, than the make and after that the make install; as the INSTALL file says...

Now I got my gd.h in /usr/local/include
and my libgd.a and also my libgd.a, libgd.la, libgd.so in /usr/local/lib

and I still got the
undefined reference when I try
gcc -Wall myFile.c -lgd

Any suggestions???

Quote:

---

Originally Posted by rodrigouy

Unfortunately I still doesnt work...

I tell you my situation.

Installed GDLibrary package, running ./configure, than the make and after that the make install; as the INSTALL file says...

Now I got my gd.h in /usr/local/include
and my libgd.a and also my libgd.a, libgd.la, libgd.so in /usr/local/lib

and I still got the
undefined reference when I try
gcc -Wall myFile.c -lgd

Any suggestions???

---

This is what I do -- your mileage may vary. I'm assuming that you're on Linux, based on your "/usr/local/lib"

In /etc there is a file called /etc/ld.so.conf. In there you can specify locations where shareable libraries are located on your machine. If /usr/local/lib is not in there, put it in there and run ldconfig. (You might need to be root to do that).

Then, I'd compile like:

gcc -Wall -lgd myFile.c

Or, to make sure that nothing else is amiss first, before all that, you could try:

gcc -Wall -L/usr/local/lib -lgd myFile.c


Try looking at man ldconfig, man ld.so and man ld for more information.

Thank you very much!
As you said /usr/local/bin wasnt in ld.so.conf file...

after adding that line and running ldconfig most of my
undefined references dissapeard,
all but one, that keeps there...

I really got no clue whats happening...

Did you read the docs?

http://www.boutell.com/gd/manual2.0.33.html#basics

Thanks a lot, it seems i was in hurry to program...

I hope after reading what you linked carefully (and obviusly after dealing with new problems) I can start to use GDLibrary.

Thanks a lot again!