Root compilation

ROOT
1

Dear all,
I am trying to compile Root on the Alma Linux platform.
The CMake configuration is as follows:
-Dqtgsi=OFF -Dqt=OFF -Dpython=OFF -Dxrootd=OFF
The compilation fails with the following error messages:

[ 24%] Built target LLVMSupportBlake3
[ 24%] Building CXX object interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/BalancedPartitioning.cpp.o
[ 24%] Building CXX object interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/BinaryStreamError.cpp.o
[ 24%] Building CXX object interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/BinaryStreamReader.cpp.o
[ 24%] Building CXX object interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/BinaryStreamRef.cpp.o
[ 24%] Building CXX object interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/BinaryStreamWriter.cpp.o
[ 24%] Building CXX object interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/BlockFrequency.cpp.o
[ 24%] Building CXX object interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/BranchProbability.cpp.o
[ 24%] Building CXX object interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/BuryPointer.cpp.o
[ 24%] Building CXX object interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/CachePruning.cpp.o
[ 24%] Building CXX object interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/Caching.cpp.o
[ 24%] Building CXX object interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/circular_raw_ostream.cpp.o
[ 24%] Building CXX object interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/Chrono.cpp.o
[ 24%] Building CXX object interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/COM.cpp.o
[ 24%] Building CXX object interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/CodeGenCoverage.cpp.o
[ 24%] Building CXX object interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/CommandLine.cpp.o
c++: fatal error: Killed signal terminated program cc1plus
compilation terminated.
make[2]: *** [interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/build.make:440: interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/CommandLine.cpp.o] Error 1
make[2]: *** Deleting file 'interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/CommandLine.cpp.o'
make[1]: *** [CMakeFiles/Makefile2:10696: interpreter/llvm-project/llvm/lib/Support/CMakeFiles/LLVMSupport.dir/all] Error 2
make: *** [Makefile:156: all] Error 2

Can you help me?
Cheers,
Gabriele

_ROOT Version: 6.34.04
_Platform: AlmaLinux release 9.5 (Teal Serval)
_Compiler: 11.5.0

2

Welcome to the ROOT forum. May be @devajith has an idea about it.

3

Hi @gabigong,

You’re probably running out of memory when building LLVM. Can you try building again with fewer threads?

make -j<N> # or cmake --build . -- -j<N>

Just replace <N> with a smaller number of threads (e.g, 4) to reduce memory usage during the build.

4

Hi @devajith,
I tried, but the result is the same.