On 04/03/13 05:13, ext 高光磊 wrote:
> Hi,
>
>
> If i run cd lib/kernel/arm/&& make, The errors will be as below
> /usr/local/bin/llvm-as -o barrier.bc ./../barrier.ll
> /usr/local/bin/clang -emit-llvm -c -target -o get_work_dim.bc -x c
Here is the issue: the kernel target is not set. This should be set as
'$host', but for some reason it set to the empty value. Therefore there
is no attribute to 'clang -target', and the rest derails from there.
(yes, we should actually check that the OCL_KERNEL_TARGET is not empty
in configure.ac...)
> Then I manually modified the lib/kernel/arm/Makefile, and many bc
> files will be generated.
>
>
> Remove '-target ${KERNEL_TARGET}' from Makefile. %.bc: %.c
> However, when I built OpenCL example, some errors occurred.
> /usr/local/bin/llvm-link: /usr/local/lib/pocl/arm/kernel-.bc: error:
> Invalid SWITCH record /usr/local/bin/llvm-link: error loading file
Removing the '-target' from clang causes it to build for its native
target, i.e. in this case $build, which is x86. So your OpenCL kernel
library seems to get some x86-specific stuff into it.
How to fix this? Difficult to say. Check what value OCL_KERNEL_TARGET
gets in ./configure. Or, if it doesn't get any, why? (look at the switch
in configure.ac, line 535, or put "sh -x" before "./configure" for some
very verbose output).
Reading your config.log might give me some idea, too.
hth, and patches welcome ;)
kalle
--
But beware the debugger. Dark side of the source it is.
If once you start down the dark path, forever will it dominate
your destiny. Consume you it will.
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