Re: building LLVM threads gets killed

> On 20 Aug 2018, at 05:01, blubee blubeeme <gurenchan_at_gmail.com> wrote:
> > 
> > I am running current compiling LLVM60 and when it comes to linking
> > basically all the processes on my computer gets killed; Chrome, Firefox and
> > some of the LLVM threads as well
> ...
> > llvm/build % ninja -j8
> > [2408/2473] Building CXX object
> > lib/Passes/CMakeFiles/LLVMPasses.dir/PassBuilder.cpp.o
> > FAILED: lib/Passes/CMakeFiles/LLVMPasses.dir/PassBuilder.cpp.o
> > /usr/bin/c++  -DGTEST_HAS_RTTI=0 -D_DEBUG -D__STDC_CONSTANT_MACROS
> > -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Ilib/Passes -I../lib/Passes
> > -Iinclude -I../include -isystem /usr/local/include -fPIC
> > -fvisibility-inlines-hidden -Werror=date-time
> > -Werror=unguarded-availability-new -std=c++11 -Wall -Wextra
> > -Wno-unused-parameter -Wwrite-strings -Wcast-qual
> > -Wmissing-field-initializers -pedantic -Wno-long-long
> > -Wcovered-switch-default -Wnon-virtual-dtor -Wdelete-non-virtual-dtor
> > -Wstring-conversion -fdiagnostics-color -g    -fno-exceptions -fno-rtti -MD
> > -MT lib/Passes/CMakeFiles/LLVMPasses.dir/PassBuilder.cpp.o -MF
> > lib/Passes/CMakeFiles/LLVMPasses.dir/PassBuilder.cpp.o.d -o
> > lib/Passes/CMakeFiles/LLVMPasses.dir/PassBuilder.cpp.o -c
> > ../lib/Passes/PassBuilder.cpp
> > c++: error: unable to execute command: Killed
> 
> It is running out of RAM while running multiple parallel link jobs.  If
> you are building using WITH_DEBUG, turn that off, it consumes large
> amounts of memory.  If you must have debug info, try adding the
> following flag to the CMake command line:
> 
> -D LLVM_PARALLEL_LINK_JOBS:STRING="1"
> 
> That will limit the amount of parallel link jobs to 1, even if you
> specify -j 8 to gmake or ninja.
> 
> Brooks, it would not be a bad idea to always use this CMake flag in the
> llvm ports. :)

And this may also fix the issues that all the small
memory (aka, RPI*) buliders are facing when trying
to do -j4?


-- 
Rod Grimes                                                 rgrimes_at_freebsd.org