Hi all! I am trying to build glow so i can start learning and contributing 
are these warnings below ignorable?
also, could you point to the right direction where i can build a subset of the project? or i have to use debug/release everytime to ensure everything goes nicely
muhd@mud:/opensource/build_Debug$ ninja all
[218/653] Building CXX object thirdparty/folly/CMakeFiles/folly_base.dir/folly/synchronization/detail/Hardware.cpp.o
/home/muhd/opensource/glow/thirdparty/folly/folly/synchronization/detail/Hardware.cpp:122:72: warning: unused parameter ‘status’ [-Wunused-parameter]
[[noreturn]] FOLLY_DISABLE_SANITIZERS static void rtmAbortFunc(uint8_t status) {
^
1 warning generated.
[258/653] NodeGen: Generating nodes.
Writing node descriptors to:
/home/muhd/opensource/build_Debug/glow/AutoGenNodes.h
/home/muhd/opensource/build_Debug/glow/AutoGenNodes.cpp
/home/muhd/opensource/build_Debug/glow/AutoGenNodes.def
/home/muhd/opensource/build_Debug/glow/AutoGenNodesImport.h
/home/muhd/opensource/build_Debug/glow/AutoGenNodesExport.h
[262/653] InstrGen: Generating instructions.
Writing instr descriptors to:
/home/muhd/opensource/build_Debug/glow/AutoGenInstr.h
/home/muhd/opensource/build_Debug/glow/AutoGenInstr.cpp
/home/muhd/opensource/build_Debug/glow/AutoGenInstr.def
/home/muhd/opensource/build_Debug/glow/AutoGenIRBuilder.h
/home/muhd/opensource/build_Debug/glow/AutoGenIRBuilder.cpp
/home/muhd/opensource/build_Debug/glow/AutoGenIRGen.h
[320/653] Building CXX object lib/LLVMIRCodeGen/CMakeFiles/LLVMIRCodeGen.dir/GlowJIT.cpp.o
/home/muhd/opensource/glow/lib/LLVMIRCodeGen/GlowJIT.cpp:139:7: warning: ‘LegacyLocalCXXRuntimeOverrides’ is deprecated: ORCv1 utilities (utilities with the ‘Legacy’ prefix) are deprecated. Please use the ORCv2 LocalCXXRuntimeOverrides utility instead [-Wdeprecated-declarations]
cxxSymbolOverride_(
^
/usr/lib/llvm-9/include/llvm/ExecutionEngine/Orc/ExecutionUtils.h:224:33: note: ‘LegacyLocalCXXRuntimeOverrides’ has been explicitly marked deprecated here
LegacyLocalCXXRuntimeOverrides::LegacyLocalCXXRuntimeOverrides(
^
/home/muhd/opensource/glow/lib/LLVMIRCodeGen/GlowJIT.cpp:183:7: warning: ‘LegacyRTDyldObjectLinkingLayer’ is deprecated: ORCv1 layers (layers with the ‘Legacy’ prefix) are deprecated. Please use ORCv2 (see docs/ORCv2.rst) [-Wdeprecated-declarations]
objectLayer_(ES_,
^
/usr/lib/llvm-9/include/llvm/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.h:356:3: note: ‘LegacyRTDyldObjectLinkingLayer’ has been explicitly marked deprecated here
LLVM_ATTRIBUTE_DEPRECATED(
^
/usr/lib/llvm-9/include/llvm/Support/Compiler.h:277:23: note: expanded from macro ‘LLVM_ATTRIBUTE_DEPRECATED’
decl  attribute ((deprecated(message)))
^
/home/muhd/opensource/glow/lib/LLVMIRCodeGen/GlowJIT.cpp:191:7: warning: ‘LegacyIRCompileLayer’ is deprecated: ORCv1 layers (layers with the ‘Legacy’ prefix) are deprecated. Please use the ORCv2 IRCompileLayer instead [-Wdeprecated-declarations]
compileLayer_(objectLayer_, SimpleCompiler(TM_)) {
^
/usr/lib/llvm-9/include/llvm/ExecutionEngine/Orc/IRCompileLayer.h:66:3: note: ‘LegacyIRCompileLayer’ has been explicitly marked deprecated here
LLVM_ATTRIBUTE_DEPRECATED(
^
/usr/lib/llvm-9/include/llvm/Support/Compiler.h:277:23: note: expanded from macro ‘LLVM_ATTRIBUTE_DEPRECATED’
decl  attribute ((deprecated(message)))
^
/home/muhd/opensource/glow/lib/LLVMIRCodeGen/GlowJIT.cpp:233:49: warning: ‘LegacyCtorDtorRunner’ is deprecated: ORCv1 utilities (utilities with the ‘Legacy’ prefix) are deprecated. Please use the ORCv2 CtorDtorRunner utility instead [-Wdeprecated-declarations]
LegacyCtorDtorRunner<decltype(compileLayer_)> ctorRunner(std::move(ctorNames),
^
/usr/lib/llvm-9/include/llvm/ExecutionEngine/Orc/ExecutionUtils.h💯3: note: ‘LegacyCtorDtorRunner’ has been explicitly marked deprecated here
LLVM_ATTRIBUTE_DEPRECATED(
^
/usr/lib/llvm-9/include/llvm/Support/Compiler.h:277:23: note: expanded from macro ‘LLVM_ATTRIBUTE_DEPRECATED’
decl  attribute ((deprecated(message)))
^
4 warnings generated.
[653/653] Linking CXX executable tests/ConcatBench
muhd@mud:/opensource/build_Debug$