Hi, I am new to linux RT. Not so new to rtos. Have compiled/loaded/run kernels from kernel.org with success in past. I am trying to find a kernel and RT patch combination that are compatible. Not so much success. Latest attempt is with linux-2.6.31.12 where I am getting: LD init/built-in.o LD .tmp_vmlinux1 drivers/built-in.o(.init.text+0x3c5e): In function `con_init': : undefined reference to `.L1446' make: *** [.tmp_vmlinux1] Error 1 this is using the default .config i've had this problem in other kernels as well I was successful building 2.6.27.5 but there is not a rt patch for this release Linux g115 2.6.27.45 #2 Tue Feb 16 11:56:21 EST 2010 i686 i686 i386 GNU/Linux my gcc is: Reading specs from /usr/lib/gcc/i386-redhat-linux/3.4.6/specs Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --disable-checking --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-java-awt=gtk --host=i386-redhat-linux Thread model: posix gcc version 3.4.6 20060404 (Red Hat 3.4.6-11) any ideas, pointers, corrections, admonishments, chastisements, thoughts, etc. would be appreciated thanks -- Mike Mueller Xygnada Technology, Inc. Raleigh, NC, USA http://www.ss7box.com ss7box@xxxxxxxxx MSN IM: ss7box@xxxxxxxxxxx Google IM: ss7box@xxxxxxxxx Yahoo IM: ss7box Skype: ss7box -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html