[llvmlinux] Compiling sources from llvmlinux/kernel.git
Jan-Simon Moeller
dl9pf at gmx.de
Wed Nov 26 17:36:12 UTC 2014
Well, that seems to produce compiler crashes on the prebuilt version
of the compiler.
can you do make with 'CLANG_TOOLCHAIN=from-source' ?
Best,
Jan-Simon
Am Mittwoch, 26. November 2014, 17:24:08 schrieb Juan Simón:
> I've compiled now using 'LLVMLinux build system' with
> 'CLANG_TOOLCHAIN=prebuilt make' and it fails too:
> http://pastebin.com/mUKjDsPB
>
> 2014-11-26 17:02 GMT+01:00 Vinícius Tinti <viniciustinti at gmail.com>:
> > Strange. But I think there are still missing commands. Normally I
only use
> > LLVMLinux build system for building.
> >
> > Any reason to not use it?
> >
> > I think it would be easier.
> >
> > On Wed, Nov 26, 2014, 13:46 Juan Simón <decedion at gmail.com> wrote:
> >> This is my Makefile: http://pastebin.com/NDXyv2L2
> >>
> >> 2014-11-26 16:43 GMT+01:00 Juan Simón <decedion at gmail.com>:
> >>> I'm compiling the kernel 3.17.4 downloaded from
> >>>
https://www.kernel.org/pub/linux/kernel/v3.x/linux-3.17.4.tar.xz, not
> >>> the git version.
> >>>
> >>> 2014-11-26 16:42 GMT+01:00 Vinícius Tinti
<viniciustinti at gmail.com>:
> >>>> On Wed, Nov 26, 2014 at 1:40 PM, Juan Simón
<decedion at gmail.com> wrote:
> >>>> > My config file: http://pastebin.com/qtvSyeKt
> >>>> >
> >>>> > 2014-11-26 16:38 GMT+01:00 Juan Simón <decedion at gmail.com>:
> >>>> >> Yes, I've applied all kernel-patches from
> >>>>
> >>>> http://buildbot.llvm.linuxfoundation.org/configs/x86_64/kernel-patches.
> >>>> tar.bz2>>>>
> >>>> >> with 'bzcat ../kernel-patches.tar.bz2 | patch -p1':
> >>>> >>
> >>>> >> kernel/linux-3.17.4$ grep -i clang Makefile
> >>>> >> ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"),
1)
> >>>> >> ifeq ($(shell $(CC) -v 2>&1 | grep -c "clang version"), 1)
> >>>> >> COMPILER := clang
> >>>> >> ifeq ($(COMPILER),clang)
> >>>> >> CLANG_TARGET := -target $(notdir $(CROSS_COMPILE:%-=%))
> >>>> >> CLANG_GCC_TC := -gcc-toolchain $(GCC_TOOLCHAIN)
> >>>> >> CLANG_IA_FLAG = -no-integrated-as
> >>>> >> CLANG_FLAGS := $(CLANG_TARGET) $(CLANG_GCC_TC)
$(CLANG_IA_FLAG)
> >>>> >> ifeq ($(COMPILER),clang)
> >>>> >>
> >>>> >> My relevant environment variables:
> >>>> >>
> >>>> >> LDFLAGS=-Wl,--as-needed -Wl,-s -Wl,-S -Wl,-O1 -Wl,--hash-
style=gnu
> >>>> >> -Wl,--sort-common
> >>>> >> MAKEFLAGS=-s
> >>>> >> CPPFLAGS=-m64 -fPIC -pipe -march=native -mtune=native -Ofast
> >>>> >> -fomit-frame-pointer -fivopts -w -fno-math-errno
> >>>> >> CXXFLAGS=-m64 -fPIC -pipe -march=native -mtune=native -Ofast
> >>>> >> -fomit-frame-pointer -fivopts -w -fno-math-errno
> >>>> >> CPP=clang-3.6 -E
> >>>>
> >>>>
PATH=/home/simon/bin:usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/
> >>>> sbin:/bin:/usr/lib/jvm/java-8-oracle/bin:/usr/lib/jvm/java-8-
oracle/db/
> >>>> bin:/usr/lib/jvm/java-8-oracle/jre/bin:~/bin>>>>
> >>>> >> HOSTCC=clang-3.6
> >>>> >> LANG=es_ES.UTF-8
> >>>> >> CONCURRENCY_LEVEL=9
> >>>> >> CXX=clang++-3.6
> >>>> >> CFLAGS=-m64 -fPIC -pipe -march=native -mtune=native -Ofast
> >>>> >> -fomit-frame-pointer -fivopts -w -fno-math-errno
> >>>> >> CC=clang-3.6
> >>>> >>
> >>>> >> The errors are:
> >>>> >> In file included from
> >>>>
> >>>>
/home/simon/fuentes/kernel/linux-3.17.4/arch/x86/tools/relocs_64.c:17:
> >>>>
> >>>>
/home/simon/fuentes/kernel/linux-3.17.4/arch/x86/tools/relocs.c:969:6:
> >>>> >> warning: variable 'do_reloc' is used uninitialized
> >>>> >>
> >>>> >> whenever 'if' condition is false [-Wsometimes-
uninitialized]
> >>>> >>
> >>>> >> if (!use_real_mode)
> >>>> >>
> >>>> >> ^~~~~~~~~~~~~~
> >>>>
> >>>>
/home/simon/fuentes/kernel/linux-3.17.4/arch/x86/tools/relocs.c:981:14:
> >>>> >> note: uninitialized use occurs here
> >>>> >>
> >>>> >> walk_relocs(do_reloc);
> >>>> >>
> >>>> >> ^~~~~~~~
> >>>>
> >>>>
/home/simon/fuentes/kernel/linux-3.17.4/arch/x86/tools/relocs.c:969:2:
> >>>> >> note: remove the 'if' if its condition is always
> >>>> >>
> >>>> >> true
> >>>> >>
> >>>> >> if (!use_real_mode)
> >>>> >> ^~~~~~~~~~~~~~~~~~~
> >>>>
> >>>>
/home/simon/fuentes/kernel/linux-3.17.4/arch/x86/tools/relocs.c:966:24:
> >>>> >> note: initialize the variable 'do_reloc' to
> >>>> >>
> >>>> >> silence this warning
> >>>> >>
> >>>> >> const char *symname);
> >>>> >>
> >>>> >> ^
> >>>> >>
> >>>> >> = NULL
> >>>> >>
> >>>> >> 1 warning generated.
> >>>> >>
/home/simon/fuentes/kernel/linux-3.17.4/kernel/bounds.c:18:2: error:
> >>>> >> unexpected token at start of statement
> >>>> >>
> >>>> >> DEFINE(NR_PAGEFLAGS, __NR_PAGEFLAGS);
> >>>> >> ^
> >>>> >>
> >>>> >>
/home/simon/fuentes/kernel/linux-3.17.4/include/linux/kbuild.h:5:18:
> >>>> note:
> >>>> >> expanded from macro 'DEFINE'
> >>>> >>
> >>>> >> asm volatile("\n at ->" #sym " %0 " #val : : "i" (val))
> >>>> >>
> >>>> >> ^
> >>>> >>
> >>>> >> <inline asm>:2:2: note: instantiated into assembly here
> >>>> >> @->NR_PAGEFLAGS $25 __NR_PAGEFLAGS
> >>>> >>
> >>>> >> ^
> >>>> >>
> >>>> >>
/home/simon/fuentes/kernel/linux-3.17.4/kernel/bounds.c:19:2: error:
> >>>> >> unexpected token at start of statement
> >>>> >>
> >>>> >> DEFINE(MAX_NR_ZONES, __MAX_NR_ZONES);
> >>>> >> ^
> >>>> >>
> >>>> >>
/home/simon/fuentes/kernel/linux-3.17.4/include/linux/kbuild.h:5:18:
> >>>> note:
> >>>> >> expanded from macro 'DEFINE'
> >>>> >>
> >>>> >> asm volatile("\n at ->" #sym " %0 " #val : : "i" (val))
> >>>> >>
> >>>> >> ^
> >>>> >>
> >>>> >> <inline asm>:2:2: note: instantiated into assembly here
> >>>> >> @->MAX_NR_ZONES $4 __MAX_NR_ZONES
> >>>> >>
> >>>> >> ^
> >>>> >>
> >>>> >>
/home/simon/fuentes/kernel/linux-3.17.4/kernel/bounds.c:21:2: error:
> >>>> >> unexpected token at start of statement
> >>>> >>
> >>>> >> DEFINE(NR_CPUS_BITS, ilog2(CONFIG_NR_CPUS));
> >>>> >> ^
> >>>> >>
> >>>> >>
/home/simon/fuentes/kernel/linux-3.17.4/include/linux/kbuild.h:5:18:
> >>>> note:
> >>>> >> expanded from macro 'DEFINE'
> >>>> >>
> >>>> >> asm volatile("\n at ->" #sym " %0 " #val : : "i" (val))
> >>>> >>
> >>>> >> ^
> >>>> >>
> >>>> >> <inline asm>:2:2: note: instantiated into assembly here
> >>>> >> @->NR_CPUS_BITS $8 ilog2(CONFIG_NR_CPUS)
> >>>> >>
> >>>> >> ^
> >>>> >>
> >>>> >>
/home/simon/fuentes/kernel/linux-3.17.4/kernel/bounds.c:23:2: error:
> >>>> >> unexpected token at start of statement
> >>>> >>
> >>>> >> DEFINE(SPINLOCK_SIZE, sizeof(spinlock_t));
> >>>> >> ^
> >>>> >>
> >>>> >>
/home/simon/fuentes/kernel/linux-3.17.4/include/linux/kbuild.h:5:18:
> >>>> note:
> >>>> >> expanded from macro 'DEFINE'
> >>>> >>
> >>>> >> asm volatile("\n at ->" #sym " %0 " #val : : "i" (val))
> >>>> >>
> >>>> >> ^
> >>>> >>
> >>>> >> <inline asm>:2:2: note: instantiated into assembly here
> >>>> >> @->SPINLOCK_SIZE $4 sizeof(spinlock_t)
> >>>> >>
> >>>> >> ^
> >>>> >>
> >>>> >> 4 errors generated.
> >>>> >> make[4]: *** [kernel/bounds.s] Error 1
> >>>> >> make[3]: *** [prepare0] Error 2
> >>>> >> make[2]: *** [sub-make] Error 2
> >>>> >> make[1]: *** [prepare] Error 2
> >>>> >> make: ***
> >>>>
> >>>> [/home/simon/fuentes/kernel/linux-3.17.4/debian/stamps/stamp-
prepare-tr
> >>>> ee-i7]>>>>
> >>>> >> Error 2
> >>>> >>
> >>>> >> 2014-11-26 16:23 GMT+01:00 Vinícius Tinti
<viniciustinti at gmail.com>:
> >>>> >>> On Wed, Nov 26, 2014 at 1:18 PM, Jan-Simon Moeller
<dl9pf at gmx.de>
> >>>>
> >>>> wrote:
> >>>> >>> > What version of clang do you use ?
> >>>> >>> >
> >>>> >>> > Am Mittwoch, 26. November 2014, 16:18:14 schrieb Juan
Simón:
> >>>> >>> >> Thanks.
> >>>> >>> >> I have saved the 'makefile', I've disabled "AppArmor"
and I have
> >>>> >>> >> compiled
> >>>> >>> >> again but it fails:
> >>>> >>> >> In file included from
> >>>>
> >>>>
/home/simon/fuentes/kernel/linux-3.17.4/arch/x86/tools/relocs_64.c:17:
> >>>>
> >>>>
/home/simon/fuentes/kernel/linux-3.17.4/arch/x86/tools/relocs.c:969:6:
> >>>> >>> >> warning: variable 'do_reloc' is used uninitialized
whenever 'if'
> >>>> >>> >> condition
> >>>> >>> >> is false
> >>>> >>> >>
> >>>> >>> >> [-Wsometimes-uninitialized]
> >>>> >>> >>
> >>>> >>> >> if (!use_real_mode)
> >>>> >>> >>
> >>>> >>> >> ^~~~~~~~~~~~~~
> >>>>
> >>>>
/home/simon/fuentes/kernel/linux-3.17.4/arch/x86/tools/relocs.c:981:14:
> >>>> >>> >> note: uninitialized use occurs here
> >>>> >>> >>
> >>>> >>> >> walk_relocs(do_reloc);
> >>>> >>> >>
> >>>> >>> >> ^~~~~~~~
> >>>>
> >>>>
/home/simon/fuentes/kernel/linux-3.17.4/arch/x86/tools/relocs.c:969:2:
> >>>> >>> >> note: remove the 'if' if its condition is always true
> >>>> >>> >>
> >>>> >>> >> if (!use_real_mode)
> >>>> >>> >> ^~~~~~~~~~~~~~~~~~~
> >>>>
> >>>>
/home/simon/fuentes/kernel/linux-3.17.4/arch/x86/tools/relocs.c:966:24:
> >>>> >>> >> note: initialize the variable 'do_reloc' to silence this
warning
> >>>> >>> >>
> >>>> >>> >> const char *symname);
> >>>> >>> >>
> >>>> >>> >> ^
> >>>> >>> >>
> >>>> >>> >> = NULL
> >>>> >>> >>
> >>>> >>> >> 1 warning generated.
> >>>>
> >>>> >>> >>
/home/simon/fuentes/kernel/linux-3.17.4/kernel/bounds.c:18:2:
> >>>> error:
> >>>> >>> >> unexpected token at start of statement
> >>>> >>> >>
> >>>> >>> >> DEFINE(NR_PAGEFLAGS, __NR_PAGEFLAGS);
> >>>> >>> >> ^
> >>>>
> >>>>
/home/simon/fuentes/kernel/linux-3.17.4/include/linux/kbuild.h:5:18:
> >>>> >>> >> note:
> >>>> >>> >> expanded from macro 'DEFINE'
> >>>> >>> >>
> >>>> >>> >> asm volatile("\n at ->" #sym " %0 " #val : : "i"
(val))
> >>>> >>> >>
> >>>> >>> >> ^
> >>>> >>> >>
> >>>> >>> >> <inline asm>:2:2: note: instantiated into assembly here
> >>>> >>> >> @->NR_PAGEFLAGS $25 __NR_PAGEFLAGS
> >>>> >>> >>
> >>>> >>> >> ^
> >>>> >>> >>
> >>>> >>> >>
/home/simon/fuentes/kernel/linux-3.17.4/kernel/bounds.c:19:2:
> >>>> error:
> >>>> >>> >> unexpected token at start of statement
> >>>> >>> >>
> >>>> >>> >> DEFINE(MAX_NR_ZONES, __MAX_NR_ZONES);
> >>>> >>> >> ^
> >>>>
> >>>>
/home/simon/fuentes/kernel/linux-3.17.4/include/linux/kbuild.h:5:18:
> >>>> >>> >> note:
> >>>> >>> >> expanded from macro 'DEFINE'
> >>>> >>> >>
> >>>> >>> >> asm volatile("\n at ->" #sym " %0 " #val : : "i"
(val))
> >>>> >>> >>
> >>>> >>> >> ^
> >>>> >>> >>
> >>>> >>> >> <inline asm>:2:2: note: instantiated into assembly here
> >>>> >>> >> @->MAX_NR_ZONES $4 __MAX_NR_ZONES
> >>>> >>> >>
> >>>> >>> >> ^
> >>>> >>> >>
> >>>> >>> >>
/home/simon/fuentes/kernel/linux-3.17.4/kernel/bounds.c:21:2:
> >>>> error:
> >>>> >>> >> unexpected token at start of statement
> >>>> >>> >>
> >>>> >>> >> DEFINE(NR_CPUS_BITS, ilog2(CONFIG_NR_CPUS));
> >>>> >>> >> ^
> >>>>
> >>>>
/home/simon/fuentes/kernel/linux-3.17.4/include/linux/kbuild.h:5:18:
> >>>> >>> >> note:
> >>>> >>> >> expanded from macro 'DEFINE'
> >>>> >>> >>
> >>>> >>> >> asm volatile("\n at ->" #sym " %0 " #val : : "i"
(val))
> >>>> >>> >>
> >>>> >>> >> ^
> >>>> >>> >>
> >>>> >>> >> <inline asm>:2:2: note: instantiated into assembly here
> >>>> >>> >> @->NR_CPUS_BITS $8 ilog2(CONFIG_NR_CPUS)
> >>>> >>> >>
> >>>> >>> >> ^
> >>>> >>> >>
> >>>> >>> >>
/home/simon/fuentes/kernel/linux-3.17.4/kernel/bounds.c:23:2:
> >>>> error:
> >>>> >>> >> unexpected token at start of statement
> >>>> >>> >>
> >>>> >>> >> DEFINE(SPINLOCK_SIZE, sizeof(spinlock_t));
> >>>> >>> >> ^
> >>>>
> >>>>
/home/simon/fuentes/kernel/linux-3.17.4/include/linux/kbuild.h:5:18:
> >>>> >>> >> note:
> >>>> >>> >> expanded from macro 'DEFINE'
> >>>> >>> >>
> >>>> >>> >> asm volatile("\n at ->" #sym " %0 " #val : : "i"
(val))
> >>>> >>> >>
> >>>> >>> >> ^
> >>>> >>> >>
> >>>> >>> >> <inline asm>:2:2: note: instantiated into assembly here
> >>>> >>> >> @->SPINLOCK_SIZE $4 sizeof(spinlock_t)
> >>>> >>> >>
> >>>> >>> >> ^
> >>>> >>> >>
> >>>> >>> >> 4 errors generated.
> >>>> >>> >>
> >>>> >>> >> I'm compiling the 3.17.4 version.
> >>>> >>> >>
> >>>> >>> >> 2014-11-26 16:06 GMT+01:00 Jan-Simon Moeller
<dl9pf at gmx.de>:
> >>>> >>> >> > See this page:
> >>>> http://llvm.linuxfoundation.org/index.php/Broken_kernel_options
> >>>>
> >>>> >>> >> > and i attached a fixed "makefile". forgot an argument.
> >>>> >>> >> >
> >>>> >>> >> > Best,
> >>>> >>> >> > JS
> >>>> >>> >> >
> >>>> >>> >> > Am Mittwoch, 26. November 2014, 16:04:00 schrieb Jan-
Simon
> >>>>
> >>>> Moeller:
> >>>> >>> >> > > This is a known issue, disable apparmor.
> >>>> >>> >> > >
> >>>> >>> >> > > The construct used (shash structure layout) - we
call it
> >>>>
> >>>> VLAIS
> >>>>
> >>>> >>> >> > > (variable
> >>>> >>> >> > > length array in struct) is not supported and the
driver
> >>>>
> >>>> needs to
> >>>>
> >>>> >>> >> > > be
> >>>> >>> >> >
> >>>> >>> >> > changed.
> >>>> >>> >> >
> >>>> >>> >> > > Patches welcome.
> >>>> >>> >> > >
> >>>> >>> >> > > Best,
> >>>> >>> >> > > JS
> >>>> >>> >> > >
> >>>> >>> >> > > Am Mittwoch, 26. November 2014, 15:57:54 schrieb
Juan Simón:
> >>>> >>> >> > > > It doesn't compile:
> >>>>
/home/simon/fuentes/kernel/linux-3.17.4/security/apparmor/crypto.c:35:2:
> >>>> >>> >> > > > error: implicit declaration of function
> >>>>
> >>>> 'SHASH_DESC_ON_STACK'
> >>>>
> >>>> >>> >> > > > [-Werror=implicit-function-declaration]
> >>>> >>> >> > > >
> >>>> >>> >> > > > SHASH_DESC_ON_STACK(shash, apparmor_tfm);
> >>>> >>> >> > > > ^
> >>>>
> >>>>
/home/simon/fuentes/kernel/linux-3.17.4/security/apparmor/crypto.c:35:22:
> >>>> >>> >> > > > error: 'shash' undeclared (first use in this
function)
> >>>> >>> >> > > >
> >>>> >>> >> > > > SHASH_DESC_ON_STACK(shash, apparmor_tfm);
> >>>> >>> >> > > >
> >>>> >>> >> > > > ^
> >>>> >>> >> > > >
> >>>> >>> >> > > > Is this a known bug? I haven't found it in bug
tracker.
> >>>> >>> >> > > > I've tested it with clang-3.5 and clang-3.6. Same
error.
> >>>> >>> >> > > >
> >>>> >>> >> > > > 2014-11-26 13:12 GMT+01:00 Jan-Simon Moeller
<dl9pf at gmx.de
> >>>> >>> >> > > >
> >>>> >>> >> > > > > Am Mittwoch, 26. November 2014, 12:53:17 schrieb
Juan
> >>>>
> >>>> Simón:
> >>>> >>> >> > > > > > Hi,
> >>>> >>> >> > > > > > I've followed the instructions on main page to
compile
> >>>>
> >>>> the
> >>>>
> >>>> >>> >> > > > > > kernel
> >>>> >>> >> >
> >>>> >>> >> > with
> >>>> >>> >> >
> >>>> >>> >> > > > > > clang on Ubuntu 14.04 64 bits:
> >>>> >>> >> > > > > > 1. Get the latest SVN version of clang
(version 3.5
> >>>>
> >>>> from
> >>>>
> >>>> >>> >> > > > > > PPA)
> >>>> >>> >> > > > > >
> >>>> >>> >> > > > > > 2. Get the kernel pacthed from "git clone
> >>>> >>> >> > > > > >
git://git.linuxfoundation.org/llvmlinux/kernel.git"
> >>>> >>> >> > > > > > 3. Execute: "export HOSTCC=clang CC=clang"
> >>>> >>> >> > > > >
> >>>> >>> >> > > > > Exporting it in your shell environment might not
end up
> >>>>
> >>>> in the
> >>>>
> >>>> >>> >> > > > > build
> >>>> >>> >> > > > > process
> >>>> >>> >> > > > > with dpkg rules. Export it in the rules file
maybe ?
> >>>> >>> >> > > > >
> >>>> >>> >> > > > >
> >>>> >>> >> > > > > or create a "makefile" (little m !!!) in the
toplevel
> >>>> >>> >> > > > > kernel-dir
> >>>> >>> >> > > > > with
> >>>> >>> >> > > > > this
> >>>> >>> >> > > > > content:
> >>>> >>> >> > > > >
> >>>> >>> >> > > > > #
> >>>> >>> >> > > > >
> >>>> >>> >> > > > > CC := clang
> >>>> >>> >> > > > > CPP := $(CC) -E
> >>>> >>> >> > > > > HOSTCC := clang
> >>>> >>> >> > > > > lm = $(MAKE) -f Makefile O="$(1)" CPP="$(CPP)"
> >>>> >>> >> > > > > CC="$(CC)"
> >>>> >>> >> > > > > HOSTCC="$(HOSTCC)"
> >>>> >>> >> > > > >
> >>>> >>> >> > > > > %:
> >>>> >>> >> > > > > @$(call lm,$(O),$@)
> >>>> >>> >> > > > >
> >>>> >>> >> > > > > all:
> >>>> >>> >> > > > > @$(call lm,$(O),$@)
> >>>> >>> >> > > > >
> >>>> >>> >> > > > > #
> >>>> >>> >> > > > >
> >>>> >>> >> > > > > > 4. From here I compile the kernel at Ubuntu
way to
> >>>>
> >>>> obtain
> >>>>
> >>>> >>> >> > > > > > DEB
> >>>> >>> >> > > > >
> >>>> >>> >> > > > > packages:
> >>>> >>> >> > > > > > 1. I patched the kernel with the patches
in
> >>>> >>> >> >
> >>>> >>> >> > http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.18-rc6-vivid/
> >>>> >>> >> >
> >>>> >>> >> > > > > > 2. cp /boot/config-`uname -r`
> >>>> >>> >> > > > > >
debian.master/config/amd64/config.flavour.i7
> >>>> >>> >> > > > > > 3. fakeroot debian/rules clean
> >>>> >>> >> > > > > > 4. debian/rules editconfigs
> >>>> >>> >> > > > > > 5. fakeroot debian/rules clean
> >>>> >>> >> > > > > > 6. fakeroot debian/rules binary-headers
> >>>> >>> >> > > > > > binary-i7
> >>>> >>> >> > > > >
> >>>> >>> >> > > > > binary-arch-headers
> >>>> >>> >> > > > >
> >>>> >>> >> > > > > > I install the generated deb packages without
problems.
> >>>> >>> >> > > > > >
> >>>> >>> >> > > > > > This i7 flavour it has:
> >>>> >>> >> > > > > >
> >>>> >>> >> > > > > > CONFIG_MCORE2=y
> >>>> >>> >> > > > > >
> >>>> >>> >> > > > > > and it's patched with:
> >>>> >>> >> > > > > >
> >>>> >>> >> > > > > > -cflags-$(CONFIG_MCORE2) += -march=i686
$(call
> >>>> >>> >> > > > > > tune,core2)
> >>>> >>> >> > > > > > +cflags-$(CONFIG_MCORE2) += -
march=native
> >>>> >>> >> > > > > > $(call
> >>>> >>> >> >
> >>>> >>> >> > tune,native)
> >>>> >>> >> >
> >>>> >>> >> > > > > > My doubts are:
> >>>> >>> >> > > > > > 1. Is this kernel really compiled with
clang? The
> >>>> >>> >> > > > > >
> >>>> >>> >> > > > > > compilation
> >>>> >>> >> > > > > >
> >>>> >>> >> > > > > > process
> >>>> >>> >> > > > > > shows in console a lot of warnings typical
of clang
> >>>>
> >>>> but
> >>>>
> >>>> >>> >> > > > > > when I
> >>>> >>> >> > > > > >
> >>>> >>> >> > > > > > execute
> >>>> >>> >> > > > > >
> >>>> >>> >> > > > > > "cat /proc/version", after reboot with the new
kernel
> >>>> >>> >> > > > > > version, it
> >>>> >>> >> > > > > > shows:
> >>>> >>> >> > > > > > "Linux version 3.18.0-031800rc6-i7 (root at X58A-
UD5)
> >>>>
> >>>> (gcc
> >>>>
> >>>> >>> >> > > > > > version
> >>>> >>> >> >
> >>>> >>> >> > 4.8.2
> >>>> >>> >> >
> >>>> >>> >> > > > > > (Ubuntu 4.8.2-19ubuntu1) )"
> >>>> >>> >> > > > > >
> >>>> >>> >> > > > > > 2. What's the kernel version in
> >>>> >>> >> > > > > >
git://git.linuxfoundation.org/llvmlinux/kernel.git?
> >>>>
> >>>> In
> >>>>
> >>>> >>> >> > LLVMLinux
> >>>> >>> >> >
> >>>> >>> >> > > > > > main
> >>>> >>> >> > > > > > page
> >>>> >>> >> > > > > >
> >>>> >>> >> > > > > >
<http://llvm.linuxfoundation.org/index.php/Main_Page>
> >>>>
> >>>> it
> >>>>
> >>>> >>> >> > says:
> >>>> >>> >> > > > > > "Alternatively you can use the LLVMLinux
kernel
> >>>> >>> >> > > > > > tree
> >>>> >>> >> > > > > >
> >>>> >>> >> > > > > > (recent
> >>>> >>> >> > > > > >
> >>>> >>> >> > > > > > mainline
> >>>> >>> >> > > > > >
> >>>> >>> >> > > > > > with latest LLVMLinux patches applied)" but
when I
> >>>>
> >>>> execute
> >>>>
> >>>> >>> >> > > > > > "debian/rules
> >>>> >>> >> > > > > > editconfigs" it shows 3.17.0 in top of console
and the
> >>>>
> >>>> git
> >>>>
> >>>> >>> >> > > > > > page
> >>>> >>> >> >
> >>>> >>> >> > shows
> >>>> >>> >> >
> >>>> >>> >> > > > > >
<http://git.linuxfoundation.org/llvmlinux/kernel.git/>
> >>>>
> >>>> that
> >>>>
> >>>> >>> >> > > > > > the
> >>>> >>> >> >
> >>>> >>> >> > last
> >>>> >>> >> >
> >>>> >>> >> > > > > change
> >>>> >>> >> > > > >
> >>>> >>> >> > > > > > was at 15 Oct 2014.
> >>>> >>> >> > >
> >>>> >>> >> > > _______________________________________________
> >>>> >>> >> > > LLVMLinux mailing list
> >>>> >>> >> > > LLVMLinux at lists.linuxfoundation.org
> >>>> >>> >> > >
https://lists.linuxfoundation.org/mailman/listinfo/llvmlinux
> >>>> >>> >> >
> >>>> >>> >> > _______________________________________________
> >>>> >>> >> > LLVMLinux mailing list
> >>>> >>> >> > LLVMLinux at lists.linuxfoundation.org
> >>>> >>> >> >
https://lists.linuxfoundation.org/mailman/listinfo/llvmlinux
> >>>> >>> >
> >>>> >>> > _______________________________________________
> >>>> >>> > LLVMLinux mailing list
> >>>> >>> > LLVMLinux at lists.linuxfoundation.org
> >>>> >>> >
https://lists.linuxfoundation.org/mailman/listinfo/llvmlinux
> >>>> >>>
> >>>> >>> Have you applied the disable-clang-integrated-as.patch?
> >>>>
> >>>>
http://git.linuxfoundation.org/?p=llvmlinux.git;a=blob;f=arch/all/patch
> >>>> es/disable-clang-integrated-
as.patch;h=4bde9a683525ce5c0aee0f46164d3028
> >>>> a167b445;hb=HEAD>>>>
> >>>> >>> This output happens if you try to build the kernel with
clang only
> >>>> >>> (you still need gcc for the assembly part).
> >>>> >>>
> >>>> >>> --
> >>>> >>> Simplicity is the ultimate sophistication
> >>>> >>> _______________________________________________
> >>>> >>> LLVMLinux mailing list
> >>>> >>> LLVMLinux at lists.linuxfoundation.org
> >>>> >>>
https://lists.linuxfoundation.org/mailman/listinfo/llvmlinux
> >>>>
> >>>> Could you pastebin 'git diff Makefile'?
> >>>>
> >>>> --
> >>>> Simplicity is the ultimate sophistication
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