Linux – compiling 64 bit linux kernel with gcc

64-bitgcclinuxlinux-kernelx86-64

While trying to compile a 64 bit linux kernel using gcc, I see the
following error :

kernel/bounds.c:1: error: code model ‘kernel’ not supported in the 32
bit mode
kernel/bounds.c:1: sorry, unimplemented: 64-bit mode not compiled in

This is what gcc -v reports :
Using built-in specs.
Target: i586-redhat-linux
Configured with: ../configure –prefix=/usr –mandir=/usr/share/man —
infodir=/usr/share/info –with-bugurl=http://bugzilla.redhat.com/
bugzilla –enable-bootstrap –enable-shared –enable-threads=posix —
enable-checking=release –with-system-zlib –enable-__cxa_atexit —
disable-libunwind-exceptions –enable-languages=c,c++,objc,obj-c+
+,java,fortran,ada –enable-java-awt=gtk –disable-dssi –enable-
plugin –with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre —
enable-libgcj-multifile –enable-java-maintainer-mode –with-ecj-jar=/
usr/share/java/eclipse-ecj.jar –disable-libjava-multilib –with-ppl —
with-cloog –with-tune=generic –with-arch=i586 –build=i586-redhat-
linux
Thread model: posix
gcc version 4.4.1 20090725 (Red Hat 4.4.1-2) (GCC)

Am i missing something on my kernel make command line ?
Or is it the gcc present on the system does not support 64 bit
compilation ?

Best Answer

Your compiler is 32-bit.