问题
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 ?
回答1:
Your compiler is 32-bit.
回答2:
What system are you running on?
If you host system is running in 32 bit mode you'll have to build a cross-compiler targeting x86_64. If your system is a 64bit system then your vendor should be providing you with a system compiler capable off building 64bit executables.
What does "uname -a" say on your system?
来源：https://stackoverflow.com/questions/1370803/compiling-64-bit-linux-kernel-with-gcc