srj added a comment.

In D141861#4060100 <https://reviews.llvm.org/D141861#4060100>, @jhuber6 wrote:

> In D141861#4060028 <https://reviews.llvm.org/D141861#4060028>, @srj wrote:
>
>> This change appears to have broken the build when crosscompiling to x86-32 
>> on a Linux x86-64 system; on the Halide buildbots, we now fail at link time 
>> with
>>
>>   FAILED: bin/nvptx-arch 
>>   : && /usr/bin/g++-7  -m32 -Wno-psabi -fPIC -fno-semantic-interposition 
>> -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra 
>> -Wno-unused-parameter -Wwrite-strings -Wcast-qual 
>> -Wno-missing-field-initializers -pedantic -Wno-long-long 
>> -Wimplicit-fallthrough -Wno-maybe-uninitialized -Wno-noexcept-type 
>> -Wdelete-non-virtual-dtor -Wno-comment -Wno-misleading-indentation 
>> -fdiagnostics-color -ffunction-sections -fdata-sections -fno-common 
>> -Woverloaded-virtual -fno-strict-aliasing -O3 -DNDEBUG 
>> -Wl,-rpath-link,/home/halidenightly/build_bot/worker/llvm-16-x86-32-linux/llvm-build/./lib
>>   -Wl,--gc-sections 
>> tools/clang/tools/nvptx-arch/CMakeFiles/nvptx-arch.dir/NVPTXArch.cpp.o -o 
>> bin/nvptx-arch  -Wl,-rpath,"\$ORIGIN/../lib"  lib/libLLVMSupport.a  
>> -lpthread  -lrt  -ldl  -lpthread  -lm  lib/libLLVMDemangle.a && :
>>   /usr/bin/ld: 
>> tools/clang/tools/nvptx-arch/CMakeFiles/nvptx-arch.dir/NVPTXArch.cpp.o: in 
>> function `handleError(cudaError_enum)':
>>   NVPTXArch.cpp:(.text._ZL11handleError14cudaError_enum+0x2b): undefined 
>> reference to `cuGetErrorString'
>>   /usr/bin/ld: 
>> tools/clang/tools/nvptx-arch/CMakeFiles/nvptx-arch.dir/NVPTXArch.cpp.o: in 
>> function `main':
>>   NVPTXArch.cpp:(.text.startup.main+0xcf): undefined reference to `cuInit'
>>   /usr/bin/ld: NVPTXArch.cpp:(.text.startup.main+0xf9): undefined reference 
>> to `cuDeviceGetCount'
>>   /usr/bin/ld: NVPTXArch.cpp:(.text.startup.main+0x11e): undefined reference 
>> to `cuDeviceGet'
>>   /usr/bin/ld: NVPTXArch.cpp:(.text.startup.main+0x131): undefined reference 
>> to `cuDeviceGetAttribute'
>>   /usr/bin/ld: NVPTXArch.cpp:(.text.startup.main+0x146): undefined reference 
>> to `cuDeviceGetAttribute'
>>   collect2: error: ld returned 1 exit status
>>
>> I'm guessing that the problem here is that the build machine has Cuda 
>> installed (so the headers are found), but no 32-bit version of Cuda (so 
>> linking fails).
>>
>> Probably easy to fix, but as of right now, our 32-bit testing is dead in the 
>> water; could someone please revert this pending a proper fix?
>
> Can you let me know if rG4ce454c654bd 
> <https://reviews.llvm.org/rG4ce454c654bd4e027fbdcd7b1dba9d164cd36463> solves 
> it? I'm guessing the problem is arising when we find the libraries at build 
> configure time but not at build time so we might need another check as well.

It looks like this change (but not the rG4ce454c654bd 
<https://reviews.llvm.org/rG4ce454c654bd4e027fbdcd7b1dba9d164cd36463>) is in 
the 17 branch, as the latter is now failing in the same way for crosscompiles.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D141861/new/

https://reviews.llvm.org/D141861

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