[llvmlinux] clang 3.6 compile failure but clang 3.4 success
Jovi Zhangwei
jovi.zhangwei at gmail.com
Sat Feb 14 01:59:49 UTC 2015
Hi,
I just tried clang 3.6 compile on one file in Linux kernel, it failed,
but clang 3.4 can success.
(I didn't apply any patch on clang source code, it's from clang repo
36 release tag)
Anyone can help this would be much appreciated.
In Linux kernel:
jovi at ubuntu:~/linux$ make CC=clang kernel/sched/core.o
CHK include/config/kernel.release
CHK include/generated/uapi/linux/version.h
CHK include/generated/utsrelease.h
CC kernel/bounds.s
clang: warning: optimization flag '-fno-delete-null-pointer-checks' is
not supported
kernel/bounds.c:18:2: error: unexpected token at start of statement
DEFINE(NR_PAGEFLAGS, __NR_PAGEFLAGS);
^
include/linux/kbuild.h:5:25: note: expanded from macro 'DEFINE'
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
^
<inline asm>:2:1: note: instantiated into assembly here
->NR_PAGEFLAGS $25 __NR_PAGEFLAGS
^
kernel/bounds.c:19:2: error: unexpected token at start of statement
DEFINE(MAX_NR_ZONES, __MAX_NR_ZONES);
^
include/linux/kbuild.h:5:25: note: expanded from macro 'DEFINE'
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
^
<inline asm>:2:1: note: instantiated into assembly here
->MAX_NR_ZONES $4 __MAX_NR_ZONES
^
kernel/bounds.c:21:2: error: unexpected token at start of statement
DEFINE(NR_CPUS_BITS, ilog2(CONFIG_NR_CPUS));
^
include/linux/kbuild.h:5:25: note: expanded from macro 'DEFINE'
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
^
<inline asm>:2:1: note: instantiated into assembly here
->NR_CPUS_BITS $8 ilog2(CONFIG_NR_CPUS)
^
kernel/bounds.c:23:2: error: unexpected token at start of statement
DEFINE(SPINLOCK_SIZE, sizeof(spinlock_t));
^
include/linux/kbuild.h:5:25: note: expanded from macro 'DEFINE'
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
^
<inline asm>:2:1: note: instantiated into assembly here
->SPINLOCK_SIZE $4 sizeof(spinlock_t)
^
4 errors generated.
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