static libraries

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11-02-2010
coletek

static libraries

Hi,

I have a libX.a that I've created (from test.c) and put in /usr/lib/

I've then created another libY.a, that calls functions in libX.a, I've also copied this lib to /usr/lib/

Now when I write a program that uses both these libs, then compile I get:

Code:

bill@micosoftsux:~$ gcc test_prog.c -Wall -m32 -O -g -lX -lY -o test_prog /usr/lib/libY.a(test.c.o): In function `test_init': test.c:(.text+0x111): undefined reference to `test_open' test.c:(.text+0x237): undefined reference to `test_open' /usr/lib/libY.a(test.c.o): In function `test_send': test.c:(.text+0x7e3): undefined reference to `test_write' test.c:(.text+0x8fc): undefined reference to `test_write' collect2: ld returned 1 exit status make: *** [test_prog] Error 1

test.c header files exist in /usr/include/ and I've compiled with -lX -lY, but its not working...

Any ideas?
11-03-2010
Yarin

test_open and test_write are in libX?
11-03-2010
Kennedy

You could try something like "gcc -lX -lY -lX -lY <the rest of that stuff>" as it is a library processing issue -- there are three phases to the linking. If you don't include the second reference, phase two dies because of dependencies.
11-03-2010
Valery Reznic

Quote:

Originally Posted by coletek

Hi,

I have a libX.a that I've created (from test.c) and put in /usr/lib/

I've then created another libY.a, that calls functions in libX.a, I've also copied this lib to /usr/lib/

Now when I write a program that uses both these libs, then compile I get:

Code:

bill@micosoftsux:~$ gcc test_prog.c -Wall -m32 -O -g -lX -lY -o test_prog /usr/lib/libY.a(test.c.o): In function `test_init': test.c:(.text+0x111): undefined reference to `test_open' test.c:(.text+0x237): undefined reference to `test_open' /usr/lib/libY.a(test.c.o): In function `test_send': test.c:(.text+0x7e3): undefined reference to `test_write' test.c:(.text+0x8fc): undefined reference to `test_write' collect2: ld returned 1 exit status make: *** [test_prog] Error 1

test.c header files exist in /usr/include/ and I've compiled with -lX -lY, but its not working...

Any ideas?

Firt specify -lY and then -lX:

Code:

bill@micosoftsux:~$ gcc test_prog.c -Wall -m32 -O -g -lY -lX -o test_prog

Or use shared libraries :)
11-05-2010
Yarin

I remember now, having the same problem in Windows, so this is definitely GCC specific, not shared object / Linux.