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Old 04-24-2007, 12:57 PM   #1
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Registered: Aug 2005
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32/64 bit libs - FC6/gcc 4.1.1 -m32 picking up 64 bit library

Dear LQ Folks,

gcc's linker appears to be picking up 64 bit libraries in spite of specifying a 32 bit architecture. I am compiling a small program with a call to a libX11 function (see bottom). Compiling with gcc 4.1.1/ld, I am seeing the following:

> gcc -m32 -o testit testit.c -lX11
/usr/bin/ld: skipping incompatible /usr/lib64/ when searching for -lX11
/usr/bin/ld: cannot find -lX11
collect2: ld returned 1 exit status

It appears that in spite of the -m32 flag to gcc the 64 bit library is being picked up. The 32 bit libraries are installed and linking manually works fine:

> gcc -m32 -o testit testit.c /usr/lib/

Using the -print-file-name option of gcc indicates that should be taken from the 32 bit library directories:

> gcc -m32 -o testit testit.c -lX11

Accounting for the parent directory links, the above file maps to /usr/lib/ which is the library that I successfully manually linked above. Any ideas on what the problem might be?

Thanks for any help that anyone might offer,

testit.c ------------------------------------------
/* tesit.c taken from Chris Siebermann's blog

#include <X11/Xlib.h>
#include <X11/Xutil.h>
int main(void) {
(void) XCreateWindow(0,0,0,0,0,0,0,0,0,0,0,0);
return 0;


32bit, gcc, libraries, x8664

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