[llvm-dev] Memory overflow during cmake/ninja build

[Ron Brender via llvm-dev]

I'm trying to do a simple build from the git 8.0.0 sources. The sources 
seem to build OK but a link step fails from running out of memory. I 
need some clues how to figure out where the bottleneck might be.

The cmake command is:

cmake -G Ninja                                          \
     -DLLVM_TARGETS_TO_BUILD=X86                         \
     -DCMAKE_INSTALL_PREFIX=/home/ron/bin/llvm_project/  \
     ~/llvm-project/llvm

All seems to go well up until this link step:

[8/323] Linking CXX executable bin/llvm-lto
FAILED: bin/llvm-lto
: && /usr/bin/c++  -fPIC -fvisibility-inlines-hidden -Werror=date-time 
-std=c++11 -Wall -Wextra -Wno-unused-parameter -Wwrite-strings 
-Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long 
-Wimplicit-fallthrough -Wno-maybe-uninitialized -Wno-class-memaccess 
-Wno-noexcept-type -Wdelete-non-virtual-dtor -Wno-comment 
-fdiagnostics-color -g -Wl,-allow-shlib-undefined 
-Wl,-rpath-link,/home/ron/llvm-project/build-try3/./lib 
tools/llvm-lto/CMakeFiles/llvm-lto.dir/llvm-lto.cpp.o  -o bin/llvm-lto  
-Wl,-rpath,"\$ORIGIN/../lib" lib/libLLVMX86CodeGen.a 
lib/libLLVMX86AsmParser.a lib/libLLVMX86AsmPrinter.a 
lib/libLLVMX86Desc.a lib/libLLVMX86Disassembler.a lib/libLLVMX86Info.a 
lib/libLLVMX86Utils.a lib/libLLVMBitReader.a lib/libLLVMBitWriter.a 
lib/libLLVMCore.a lib/libLLVMIRReader.a lib/libLLVMLTO.a lib/libLLVMMC.a 
lib/libLLVMObject.a lib/libLLVMSupport.a lib/libLLVMTarget.a -lpthread 
lib/libLLVMAsmPrinter.a lib/libLLVMDebugInfoDWARF.a 
lib/libLLVMGlobalISel.a lib/libLLVMSelectionDAG.a 
lib/libLLVMX86AsmPrinter.a lib/libLLVMX86Utils.a 
lib/libLLVMMCDisassembler.a lib/libLLVMObjCARCOpts.a lib/libLLVMPasses.a 
lib/libLLVMCodeGen.a lib/libLLVMTarget.a lib/libLLVMipo.a 
lib/libLLVMBitWriter.a lib/libLLVMIRReader.a lib/libLLVMAsmParser.a 
lib/libLLVMLinker.a lib/libLLVMScalarOpts.a 
lib/libLLVMAggressiveInstCombine.a lib/libLLVMInstCombine.a 
lib/libLLVMInstrumentation.a lib/libLLVMVectorize.a 
lib/libLLVMTransformUtils.a lib/libLLVMAnalysis.a lib/libLLVMObject.a 
lib/libLLVMBitReader.a lib/libLLVMMCParser.a lib/libLLVMMC.a 
lib/libLLVMDebugInfoCodeView.a lib/libLLVMDebugInfoMSF.a 
lib/libLLVMProfileData.a lib/libLLVMCore.a lib/libLLVMBinaryFormat.a 
lib/libLLVMSupport.a -lrt -ldl -lpthread -lm lib/libLLVMDemangle.a && :
/usr/bin/ld: 
/usr/lib/gcc/x86_64-linux-gnu/8/../../../x86_64-linux-gnu/librt.so: 
error adding symbols: memory exhausted
collect2: error: ld returned 1 exit status
[9/323] Building CXX object 
tools/bugpoint/CMakeFiles/bugpoint.dir/bugpoint.cpp.o
[10/323] Linking CXX shared library lib/libLTO.so.9svn
ninja: build stopped: subcommand failed.

My hardware is a rather ancient HP a6745f (AMD) with 4GB memory, 200 GB 
HDD. OS is Kubuntu 18.10.

Is my system just too limited or is there something else I should look 
for? What other info can I provide?

Ron



-- 
Ron Brender
Whose favorite airplane is N6119A, a 1979 Cessna T210.