[cfe-dev] Build Clang on x86_64 (ubuntu) with arm-linux-gnueabihf failed

Tue Oct 8 09:15:29 PDT 2013

Anton,

The compiler I'm using is this one:
https://launchpad.net/gcc-linaro/+milestone/4.8-2013.08 . This just happens
to be the latest linaro compiler installed on the central package database
at ARM. I'd assume the ubuntu one would work just as well.

Cheers,

James

On 8 October 2013 17:09, Anton Smirnov <dev at antonsmirnov.name> wrote:

> I've noticed you've used linaro toolchain instead of ubuntu's
> gcc-4.7-arm-linux-gnueabihf (and other packages from
> http://llvm.org/docs/HowToCrossCompileLLVM.html).
> Can you write what packages should be downloaded and installed from
> http://www.linaro.org/downloads/ ?
>
> Thanks and regards,
> Anton.
>
>
> 2013/10/8 Anton Smirnov <dev at antonsmirnov.name>
>
>> Thanks, James.
>>
>> I will give it a try right now!
>>
>>
>> 2013/10/8 James Molloy <james at jamesmolloy.co.uk>
>>
>>> Hi Anton,
>>>
>>> I'm very confused about your setup. The subject of these emails suggests
>>> you want to use arm-linux-gnueabihf, but the CMake verbose output you
>>> showed shows you've told it to use clang++ (/usr/local/bin/clang++
>>> -target armv7a-linux-gnueabihf). The compiler flags also seem to be a
>>> frankenmix of x86 and ARM ( -L/usr/lib/gcc/x86_64-linux-gnu/4.7 is never
>>> gonna work!)
>>>
>>> I managed a build without any problems using:
>>>
>>> mkdir build; cd build; cmake ..
>>> -DCMAKE_C_COMPILER=arm-linux-gnueabihf-gcc
>>> -DCMAKE_CXX_COMPILER=arm-linux-gnueabihf-g++ -DCMAKE_SYSTEM_NAME=Linux
>>>
>>> As the CMake cross-compilation wiki says, "CMAKE_SYSTEM_NAME" is very
>>> important as it tells CMake that it's cross compiling.
>>>
>>> I also went and looked at the wiki page you quoted, and went and tried
>>> it out. That page is written for someone who wants to cross compile *with
>>> clang*. You want to cross-compile with gcc, so there are some changes you
>>> need to make.
>>>
>>> You must remove the "-target" parameter. You must also remove the
>>> "-ccc-gcc-name" parameter. You also still need the CMAKE_C_COMPILER and
>>> CMAKE_CXX_COMPILER arguments. So the line becomes:
>>>
>>> cmake ..
>>> -DCMAKE_C_COMPILER=/work/tools/linaro/gnueabi/2013.08-20130816/bin/arm-linux-gnueabihf-gcc
>>> -DCMAKE_CXX_COMPILER=/work/tools/linaro/gnueabi/2013.08-20130816/bin/arm-linux-gnueabihf-g++
>>> -DCMAKE_CROSSCOMPILING=True
>>> -DLLVM_TABLEGEN=/work/llvm/build7/../build6/native/bin/llvm-tblgen
>>> -DLLVM_DEFAULT_TARGET_TRIPLE=arm-linux-gnueabihf -DLLVM_TARGET_ARCH=ARM
>>> -DLLVM_TARGETS_TO_BUILD=ARM -DCMAKE_CXX_FLAGS=' -mcpu=cortex-a9
>>> -I/usr/arm-linux-gnueabihf/include/c++/4.7.2/arm-linux-gnueabihf/
>>> -I/usr/arm-linux-gnueabihf/include/ -mfloat-abi=hard'
>>>
>>> Where '/work/llvm/build7/../build6/native/bin' is the location of a
>>> previously-built x86 llvm-tblgen.
>>>
>>> Hopefully this has helped. My preference would be the first command line
>>> I pasted - using -DCMAKE_SYSTEM_NAME=Linux. That seems the simplest way to
>>> me, and it gets LLVM to auto-create its own native llvm-tblgen.
>>>
>>> Cheers,
>>>
>>> James
>>>
>>>
>>>
>>> On 8 October 2013 09:07, Anton Smirnov <dev at antonsmirnov.name> wrote:
>>>
>>>> I can confirm that after editing there is no -L/lib64 in invocation
>>>> line,
>>>> but the problem remains. I think previously compiled files were
>>>> compiled/linked with -L/lib64 and this
>>>> corrupts the build.
>>>>
>>>> How can it be fixed/walked-around?
>>>>
>>>>
>>>> 2013/10/8 Anton Smirnov <dev at antonsmirnov.name>
>>>>
>>>>> As far as i understood, invocation line is saved in
>>>>> CMakeFiles/llvm-tblgen.dir/link.txt.
>>>>> I've edited it to remove -L/lib64 and invoked the last command line
>>>>> manually but the problem remains.
>>>>>
>>>>> What can i do in order to avoid adding -L/lib64 ?
>>>>>
>>>>> Thanks,
>>>>> Anton
>>>>>
>>>>>
>>>>> 2013/10/8 Anton Smirnov <dev at antonsmirnov.name>
>>>>>
>>>>>> Hello.
>>>>>>
>>>>>> Similar question to what i asked few days ago but was not resolved.
>>>>>>
>>>>>> I've followed guide (http://llvm.org/docs/HowToCrossCompileLLVM.html)
>>>>>> step-by-step.
>>>>>> The only changes i've done is installed g++ package since i've
>>>>>> received "no g++ found" on clear virtual machine (ubuntu 13.04_64).
>>>>>>
>>>>>> First i've compiled for host (to use tblgens), then for ARM.
>>>>>> When cross-compiling for ARM (tried both ninja and autotools) i'm
>>>>>> getting linker error:
>>>>>>
>>>>>> Linking CXX executable ../../bin/llvm-tblgen
>>>>>> ../../lib/libLLVMSupport.a: could not read symbols: File format not
>>>>>> recognized
>>>>>> clang: error: linker command failed with exit code 1 (use -v to see
>>>>>> invocation)
>>>>>> make[2]: *** [bin/llvm-tblgen] Error 1
>>>>>> make[1]: *** [utils/TableGen/CMakeFiles/llvm-tblgen.dir/all] Error 2
>>>>>>
>>>>>> Verbose output (make VERBOSE=1):
>>>>>>
>>>>>> cd /home/asmirnov/llvm_arm_cmake_build/utils/TableGen &&
>>>>>> /usr/bin/cmake -E cmake_link_script CMakeFiles/llvm-tblgen.dir/link.txt
>>>>>> --verbose=1
>>>>>> /usr/local/bin/clang++   -target armv7a-linux-gnueabihf
>>>>>> -mcpu=cortex-a9
>>>>>> -I/usr/arm-linux-gnueabihf/include/c++/4.7.3/arm-linux-gnueabihf/
>>>>>> -I/usr/arm-linux-gnueabihf/include/ -mfloat-abi=hard -ccc-gcc-name
>>>>>> arm-linux-gnueabihf-gcc -Wall -W -Wno-unused-parameter -Wwrite-strings
>>>>>> -Wmissing-field-initializers -pedantic -Wno-long-long
>>>>>> -Wcovered-switch-default -Wnon-virtual-dtor -fno-rtti -O3 -DNDEBUG
>>>>>> CMakeFiles/llvm-tblgen.dir/AsmMatcherEmitter.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/AsmWriterEmitter.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/AsmWriterInst.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/CallingConvEmitter.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/CodeEmitterGen.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/CodeGenDAGPatterns.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/CodeGenInstruction.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/CodeGenMapTable.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/CodeGenRegisters.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/CodeGenSchedule.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/CodeGenTarget.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/DAGISelEmitter.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/DAGISelMatcherEmitter.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/DAGISelMatcherGen.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/DAGISelMatcherOpt.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/DAGISelMatcher.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/DFAPacketizerEmitter.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/DisassemblerEmitter.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/FastISelEmitter.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/FixedLenDecoderEmitter.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/InstrInfoEmitter.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/IntrinsicEmitter.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/OptParserEmitter.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/PseudoLoweringEmitter.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/RegisterInfoEmitter.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/SetTheory.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/SubtargetEmitter.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/TGValueTypes.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/TableGen.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/X86DisassemblerTables.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/X86ModRMFilters.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/X86RecognizableInstr.cpp.o
>>>>>> CMakeFiles/llvm-tblgen.dir/CTagsEmitter.cpp.o  -o ../../bin/llvm-tblgen
>>>>>> -L/usr/lib/gcc/x86_64-linux-gnu/4.7  -L/lib64  ../../lib/libLLVMTableGen.a
>>>>>> ../../lib/libLLVMSupport.a -lrt -ldl -lpthread -lpthread
>>>>>> ../../lib/libLLVMSupport.a: could not read symbols: File format not
>>>>>> recognized
>>>>>> clang: error: linker command failed with exit code 1 (use -v to see
>>>>>> invocation)
>>>>>> make[2]: *** [bin/llvm-tblgen] Error 1
>>>>>> make[2]: Leaving directory `/home/asmirnov/llvm_arm_cmake_build'
>>>>>> make[1]: *** [utils/TableGen/CMakeFiles/llvm-tblgen.dir/all] Error 2
>>>>>> make[1]: Leaving directory `/home/asmirnov/llvm_arm_cmake_build'
>>>>>> make: *** [all] Error 2
>>>>>>
>>>>>>  Can it be walked-around by invocation without -L/lib64 ?
>>>>>>
>>>>>> Anton
>>>>>>
>>>>>>
>>>>>
>>>>
>>>> _______________________________________________
>>>> cfe-dev mailing list
>>>> cfe-dev at cs.uiuc.edu
>>>> http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev
>>>>
>>>>
>>>
>>
>
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