Hi,
I am facing one problem while building module on my SLES m/c with 2.6 kernel. The problem is something like this :-
I made one Makefile which will be used by kbuild and contents are something like this :-
------------------Makefile--------------------------------
INCLUDES=/home/test/Testing/Include
EXTRA_CFLAGS = -I${INCLUDES}
EXTRA_LDFLAGS = /home/test/Testing/Lib/libtest.a
obj-m := test_module.o
OBJS1= 1.o
OBJS2= 2.o
test_module-objs := ${OBJS1} ${OBJS2}
-----------------------------------------------------------
Here, as you can see, the intention is to get test_module.ko...
There are 2 source files involved here named 1.c and 2.c present in the current directory, 1 Library file named libtest.a present in "/home/test/Testing/Lib" and one header file present in "/home/test/Testing/Include"...
For clarification, header file and library [which contains one function definition which has been used in 1.c].
Now, when I do make for building the module [test_module.ko], it says somethine like this :-
make -C /usr/src/linux SUBDIRS=/home/test/Testing/Modules modules
make[1]: Entering directory `/usr/src/linux'
CC [M] /home/test/Testing/Modules/1.o
CC [M] /home/test/Testing/Modules/2.o
LD [M] /home/test/Testing/Modules/sum_module.o
Building modules, stage 2.
MODPOST
*** Warning: "test_printf2" [/home/test/Testing/Modules/test_module.ko] undefined!
CC /home/test/Testing/Modules/test_module.mod.o
LD [M] /home/test/Testing/Modules/test_module.ko
And if you try to do $ insmod test_module.ko, it shows "undefined symbol test_printf2" message.
As mentioned in kbuild docs, that you can use EXTRA_LDFLAGS, LDFLAGS_@ for modifying the linker's options, but doing that also there is no improvement and still this undefined symbol message I am getting.
Anyone please help me...
Thanks in advance.
