[PATCH] D78535: libclc: Pass system libraries to the linker after llvm libraries

[Jan Vesely via Phabricator via llvm-commits]

jvesely added a comment.

In D78535#2010720 <https://reviews.llvm.org/D78535#2010720>, @tstellar wrote:

> This is the failing cmdline (from here https://github.com/tstellar/llvm-project/runs/587088911):
>
> /usr/bin/c++     CMakeFiles/prepare_builtins.dir/utils/prepare-builtins.cpp.o  -o prepare_builtins -L/home/runner/work/llvm-project/llvm-project/build/lib -Wl,-rpath,/home/runner/work/llvm-project/llvm-project/build/lib  -lz -lrt -ldl -ltinfo -lpthread -lm -lxml2  -lLLVMBitWriter -lLLVMAnalysis -lLLVMProfileData -lLLVMObject -lLLVMTextAPI -lLLVMMCParser -lLLVMMC -lLLVMDebugInfoCodeView -lLLVMDebugInfoMSF -lLLVMBitReader -lLLVMCore -lLLVMRemarks -lLLVMBitstreamReader -lLLVMBinaryFormat -lLLVMSupport -lLLVMDemangle


Looks like this is caused by Ubuntu enabling `-Wl,--as-needed` by default (since 11.10) [0]

[0] https://wiki.ubuntu.com/ToolChain/CompilerFlags#A-Wl.2C--as-needed


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D78535