Hi,
I need to compile the moblin kernal source v2.1 with using intel c++
compiler.iam using suse linux v2.1.
i am following the instruction given below:
1. Prepare for build
a. su into root.
b. Create a ~/.rpmmacros file containing:
%_topdir %(echo $HOME)/rpmbuild
%_smp_mflags -j3
%__arch_install_post /usr/lib/rpm/check-rpaths
/usr/lib/rpm/check-buildroot
%_default_patch_fuzz 2
#end of file
fuzz=2 is critical to allow the 915 patches to merge correctly.
_smp_mflags -jN, N should be set to the number of processor cores on your build
system
Download the kernel source from a source repository:
(Used
http://repo.moblin.org/moblin/development/core/source/kernel-2.6.29.4-6.1.moblin2.src.rpm)
build with Intel Compiler
1. Perform step 1 in the previous section
2. Setup Intel Compiler environment:
a. Set the compiler environment:
$ source /opt/intel/Compiler/11.1/XXX/bin/ia32/iccvars_ia32.sh
where XXX is the particular version you are using
b. Edit icc.cfg (in bin directory) and add the following line:
-mia32
3. Make source code modifications.
a. Modify include/linux/compiler-intel.h and add the following line at
the end of the file:
#undef __compiler_offsetof
b. Modify arch/x86/include/asm/xor_32.h at line 843, change
: "+r" (lines),
To:
: "+rm" (lines),
This change is required because the code is written to work with gcc's
assumption that the stack is 16 byte aligned (contrary to the ABI) and
thus there is one additional register available.
c. Add libirc_s.a to the link command by modifying Makefile at line 696.
Change:
--start-group $(vmlinux-main) --end-group
to:
--start-group $(vmlinux-main)
/opt/intel/Compiler/11.1/XXX/lib/ia32/libirc_s.a
--end-group
d. Modify arch/x86/include/asm/delay.h and remove the references to
__bad_udelay and replace the calls to it with 0.
e. Modify include/linux/log2.h and remove the references to
____ilog2_NaN() and replace the calls to it with 0.
4. Start the build:
$ cd <build path>/rpmbuild/BUILD/kernel-2.6.27/linux-2.6.27.i686
$ make clean
$ make HOSTCC=icc CC=icc CPP="gcc -E"
CONFIG_DEBUG_SECTION_MISMATCH=y KBUILD_MODPOST_WARN=n bzImage
$ make HOSTCC=icc CC=icc CPP="gcc -E"
CONFIG_DEBUG_SECTION_MISMATCH=y KBUILD_MODPOST_WARN=n modules
$ make HOSTCC=icc CC=icc CPP="gcc -E"
CONFIG_DEBUG_SECTION_MISMATCH=y KBUILD_MODPOST_WARN=n
modules_install
$ make HOSTCC=icc CC=icc CPP="gcc -E"
CONFIG_DEBUG_SECTION_MISMATCH=y KBUILD_MODPOST_WARN=n install
my questions is in step 4 ie ( $ cd <build
path>/rpmbuild/BUILD/kernel-2.6.27/linux-2.6.27.i686) WHAT IS THE <build
path>???
i have already done all the changes whatever is mentioned till step 3.
Thanks in advance
ankit
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