Build failure

Hi all,

After updating llvm+clang to r174701 by issuing

make -j8 happiness

The build fails with:
...
make[2]: Entering directory `/local/csaba/LLVM/build-release/tools/llvm-diff'
llvm[2]: Compiling DiffConsumer.cpp for Release+Asserts build
llvm[2]: Linking Release+Asserts executable lli (without symbols)
llvm[2]: Compiling CrashDebugger.cpp for Release+Asserts build
/local/csaba/LLVM/build-release/tools/llc/Release+Asserts/llc.o: In
function `main':
llc.cpp:(.text+0x5119): undefined reference to `LLVMInitializeAArch64TargetInfo'
llc.cpp:(.text+0x5179): undefined reference to `LLVMInitializeAArch64Target'
llc.cpp:(.text+0x51d9): undefined reference to `LLVMInitializeAArch64TargetMC'
llc.cpp:(.text+0x5231): undefined reference to `LLVMInitializeAArch64AsmPrinter'
llc.cpp:(.text+0x5269): undefined reference to `LLVMInitializeAArch64AsmParser'
collect2: ld returned 1 exit status
make[2]: *** [/local/csaba/LLVM/build-release/Release+Asserts/bin/llc] Error 1
make[2]: Leaving directory `/local/csaba/LLVM/build-release/tools/llc'
make[1]: *** [llc/.makeall] Error 2
make[1]: *** Waiting for unfinished jobs....
llvm[2]: Compiling DiffLog.cpp for Release+Asserts build
llvm[2]: Compiling ExecutionDriver.cpp for Release+Asserts build
llvm[2]: Linking Release+Asserts executable llvm-bcanalyzer (without symbols)
llvm[2]: Linking Release+Asserts executable llvm-mc (without symbols)
llvm[2]: ======= Finished Linking Release+Asserts Executable
llvm-bcanalyzer (without symbols)
make[2]: Leaving directory
`/local/csaba/LLVM/build-release/tools/llvm-bcanalyzer'
llvm[2]: Compiling DifferenceEngine.cpp for Release+Asserts build
llvm[2]: Compiling ExtractFunction.cpp for Release+Asserts build
/local/csaba/LLVM/build-release/tools/llvm-mc/Release+Asserts/llvm-mc.o:
In function `main':
llvm-mc.cpp:(.text+0x2879): undefined reference to
`LLVMInitializeAArch64TargetInfo'
llvm-mc.cpp:(.text+0x28d9): undefined reference to
`LLVMInitializeAArch64TargetMC'
llvm-mc.cpp:(.text+0x2911): undefined reference to
`LLVMInitializeAArch64AsmParser'
llvm-mc.cpp:(.text+0x2941): undefined reference to
`LLVMInitializeAArch64Disassembler'
collect2: ld returned 1 exit status
make[2]: *** [/local/csaba/LLVM/build-release/Release+Asserts/bin/llvm-mc]
Error 1
make[2]: Leaving directory `/local/csaba/LLVM/build-release/tools/llvm-mc'
make[1]: *** [llvm-mc/.makeall] Error 2
llvm[2]: Compiling FindBugs.cpp for Release+Asserts build
llvm[2]: ======= Finished Linking Release+Asserts Executable lli
(without symbols)
make[2]: Leaving directory `/local/csaba/LLVM/build-release/tools/lli'
llvm[2]: Compiling llvm-diff.cpp for Release+Asserts build
llvm[2]: Compiling Miscompilation.cpp for Release+Asserts build
llvm[2]: Compiling OptimizerDriver.cpp for Release+Asserts build
llvm[2]: Compiling ToolRunner.cpp for Release+Asserts build
llvm[2]: Compiling bugpoint.cpp for Release+Asserts build
llvm[2]: Linking Release+Asserts executable llvm-diff (without symbols)
llvm[2]: Linking Release+Asserts executable opt (without symbols)
llvm[2]: ======= Finished Linking Release+Asserts Executable llvm-diff
(without symbols)
make[2]: Leaving directory `/local/csaba/LLVM/build-release/tools/llvm-diff'
llvm[2]: Linking Release+Asserts executable bugpoint (without symbols)
/local/csaba/LLVM/build-release/tools/opt/Release+Asserts/opt.o: In
function `main':
opt.cpp:(.text+0x1fc1): undefined reference to `LLVMInitializeAArch64TargetInfo'
opt.cpp:(.text+0x2021): undefined reference to `LLVMInitializeAArch64Target'
opt.cpp:(.text+0x2081): undefined reference to `LLVMInitializeAArch64TargetMC'
collect2: ld returned 1 exit status
make[2]: *** [/local/csaba/LLVM/build-release/Release+Asserts/bin/opt] Error 1
make[2]: Leaving directory `/local/csaba/LLVM/build-release/tools/opt'
make[1]: *** [opt/.makeall] Error 2
llvm[2]: ======= Finished Linking Release+Asserts Executable bugpoint
(without symbols)
make[2]: Leaving directory `/local/csaba/LLVM/build-release/tools/bugpoint'
make[1]: Leaving directory `/local/csaba/LLVM/build-release/tools'
make: *** [all] Error 1

I suspect it's either a dependency problem or a missing library. This
is with autoconf, not CMake.

Any ideas?

Csaba

Hi Csaba,

Usually, "rm Makefile.llvmbuild" fixes this kind of problem for me.

--Stephan