Hello,

I have for some time been successful in building C plug-ins and installing them with gimptool --install-admin plugin_name.c. The command output echoed by this call is

/usr/bin/gcc -g -O2 -Wall -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -o /usr/lib/gimp/1.2/plug-ins/plugin_name plugin_name.c -L/usr/lib -lgimpui -lgimp -L/usr/X11R6/lib -lgtk -lgdk -rdynamic -lgmodule -lglib -ldl -lXi -lXext -lX11 -lm

Now, I need to link an additional library into my plug-in. I built a makefile, setting CFLAGS to the include directories called by gimptool and LDFLAGS to gimptool's library calls (I did not yet add in the desired additial library). When I ran the makefile against my plug-in, I received the following error:

/usr/lib/crt1.o: In function `_start': /usr/lib/crt1.o(.text+0x18): undefined reference to `main' /usr/lib/libgimp.so: undefined reference to `PLUG_IN_INFO' collect2: ld returned 1 exit status

Strange. So I tried the simplest command-line version of the compiler call I could find:

gcc -o plugin_name `gimptool --libs --cflags` plugin_name.c

and got the same error. Worse, now, after a bit more experimentation (changing the order of library calls in the makefile to try to match up each -L search path with the libraries to be found there), even

gimptool --install-admin plugin_name.c

results in the above error. gimptool was not edited during this process.

Any insights? My Gimp version is 1.2.1, under Red Hat Linux 6.2.

Thanks, Cindy Huyser

Thanks to you both. At some time during my experimentation process, the file was overwritten and lost the PLUG_IN_INFO (along with everything else), and I hadn't thought to look at the file again, since I hadn't edited it. Thank goodness for CVS!

Thanks again, Cindy

looks as if your plug-in doesn't specify PLUG_IN_INFO. Every plug-in needs to setup a global array of function pointers like this:

GimpPlugInInfo PLUG_IN_INFO = {
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run /* run_proc */
};