Hello Jan, hello Emil,
I've found it. It isn't a LLVM but a Mesa clover build problem. After
Jan pointed me to build clover with
--enable-opencl_icd switch in mesa to create an ICD driver
(libMesaOpenCL.so) and the corresponding vendors file (installed as
/etc/OpenCL/vendors/mesa.icd)
libOpenCL.so wouldn't be build the right way.
With --enable-opencl_icd a 'new' libMesaOpenCL.so.1.0.0 would be build
in mesa/lib64/gallium/ and a 'linked' libOpenCL.so.1.0.0 version. But
the later is broken (missing symbols).
A 'rebuild' without '--enable-opencl_icd' isn't enough to circumvent
this mess. I had to 'make distclean' plus remove all libMesaOpenCL*
references by hand to build a new clean _working_ libOpenCL* lib.
Now,
'opencl-example/run_tests.sh' and '/opt/amdgpu-pro/bin/clinfo' works
like a charm, again.
The later show nice new int64 support.
To-do
Find the wrong mesa --enable-opencl_icd build option commands/config
which result in bad libMesaOpenCL/libOpenCL libraries.
Greetings,
Dieter
Am 20.09.2017 19:26, schrieb Jan Vesely:
adding mesa-dev. This is not really related to libclc.
On Wed, 2017-09-20 at 12:50 +0200, Dieter Nützel via Libclc-dev wrote:
Worked OK with older version (for me latest was #6c9f36933c5) but with
your 'clover: Fix build after LLVM r313390' reverted.
Now I get this during compilation tries:
/opt/opencl-example> make
gcc -o hello_world hello_world.o cl_simple.o cl_util.o
-L/usr/local/lib
-lOpenCL
/usr/local/lib64/libOpenCL.so: undefined reference to
`llvm::LLVMContext::getDiagnosticHandler() const@LLVM_6.0'
/usr/local/lib64/libOpenCL.so: undefined reference to
`llvm::isKnownNonNull(llvm::Value const*)@LLVM_6.0'
/usr/local/lib64/libOpenCL.so: undefined reference to
`llvm::DIBuilder::createCompileUnit(unsigned int, llvm::DIFile*,
llvm::StringRef, bool, llvm::StringRef, unsigned int, llvm::StringRef,
llvm::DICompileUnit::DebugEmissionKind, unsigned long, bool,
bool)@LLVM_6.0'
This is odd, this function is pretty old.
/usr/local/lib64/libOpenCL.so: undefined reference to
`llvm::LLVMContext::setDiagnosticHandler(void (*)(llvm::DiagnosticInfo
const&, void*), void*, bool)@LLVM_6.0'
collect2: error: ld returned 1 exit status
make: *** [Makefile:10: hello_world] Fehler 1
Greetings,
Dieter
For reference (running '/opt/amdgpu-pro/bin/clinfo'):
/opt/opencl-example> /opt/amdgpu-pro/bin/clinfo
/opt/amdgpu-pro/bin/clinfo: /usr/local/lib64/libOpenCL.so.1: no
version
information available (required by /opt/amdgpu-pro/bin/clinfo)
/opt/amdgpu-pro/bin/clinfo: /usr/local/lib64/libOpenCL.so.1: no
version
information available (required by /opt/amdgpu-pro/bin/clinfo)
ATTENTION: default value of option mesa_glthread overridden by
environment.
ATTENTION: default value of option radeonsi_assume_no_z_fights
overridden by environment.
ATTENTION: default value of option radeonsi_commutative_blend_add
overridden by environment.
ATTENTION: default value of option mesa_glthread overridden by
environment.
Number of platforms: 1
Platform Profile: FULL_PROFILE
Platform Version: OpenCL 1.1 Mesa
17.3.0-devel (git-94fef19509)
Platform Name: Clover
Platform Vendor: Mesa
Platform Extensions: cl_khr_icd
Platform Name: Clover
Number of devices: 1
Device Type: CL_DEVICE_TYPE_GPU
Vendor ID: 1002h
Max compute units: 36
Max work items dimensions: 3
Max work items[0]: 256
Max work items[1]: 256
Max work items[2]: 256
Max work group size: 256
Preferred vector width char: 16
Preferred vector width short: 8
Preferred vector width int: 4
Preferred vector width long: 2
Preferred vector width float: 4
Preferred vector width double: 2
Native vector width char: 16
Native vector width short: 8
Native vector width int: 4
Native vector width long: 2
Native vector width float: 4
Native vector width double: 2
Max clock frequency: 1411Mhz
Address bits: 64
Max memory allocation: 6010904166
Image support: No
Max size of kernel argument: 1024
Alignment (bits) of base address: 1024
Minimum alignment (bytes) for any datatype: 128
Single precision floating point capability
Denorms: No
Quiet NaNs: Yes
Round to nearest even: Yes
Round to zero: No
Round to +ve and infinity: No
IEEE754-2008 fused multiply-add: No
Cache type: None
Cache line size: 0
Cache size: 0
Global memory size: 8587005952
Constant buffer size: 2147483647
Max number of constant args: 16
Local memory type: Scratchpad
Local memory size: 32768
/opt/amdgpu-pro/bin/clinfo: relocation error:
/usr/local/lib64/libOpenCL.so.1: symbol
_ZN4llvm11LLVMContext20setDiagnosticHandlerEPFvRKNS_14DiagnosticInfoEPvES4_b,
version LLVM_6.0 not defined in file libLLVM-6.0svn.so with link time
reference
this looks like libLLVM-6.0svn.so is an older version than what you
built clover against. Did you rebuild and reinstall llvm after r313390?
Jan
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