CMake Error at source/cmake/modules/CheckCompilerVersion.cmake:38 (message):
  Host GCC version must be at least 5.1, your version is 4.9.4.
Call Stack (most recent call first):
  source/cmake/modules/CheckCompilerVersion.cmake:48 (check_compiler_version)
  source/cmake/config-ix.cmake:13 (include)
  source/CMakeLists.txt:655 (include)


llvm-core/11.0.0: WARN: Build folder is dirty, removing it: /home/conan/w/cci_PR-3375/.conan/data/llvm-core/11.0.0/_/_/build/2924c9201e88f422c8a3a1b1ef25922f9aab664f
llvm-core/11.0.0: ERROR: Package '2924c9201e88f422c8a3a1b1ef25922f9aab664f' build failed
llvm-core/11.0.0: WARN: Build folder /home/conan/w/cci_PR-3375/.conan/data/llvm-core/11.0.0/_/_/build/2924c9201e88f422c8a3a1b1ef25922f9aab664f
ERROR: llvm-core/11.0.0: Error in build() method, line 172
	cmake.configure()
	ConanException: Error 1 while executing cd '/home/conan/w/cci_PR-3375/.conan/data/llvm-core/11.0.0/_/_/build/2924c9201e88f422c8a3a1b1ef25922f9aab664f' && cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE="Debug" -DCONAN_IN_LOCAL_CACHE="ON" -DCONAN_COMPILER="gcc" -DCONAN_COMPILER_VERSION="4.9" -DCONAN_CXX_FLAGS="-m64" -DCONAN_SHARED_LINKER_FLAGS="-m64" -DCONAN_C_FLAGS="-m64" -DCONAN_LIBCXX="libstdc++" -DBUILD_SHARED_LIBS="False" -DCMAKE_INSTALL_PREFIX="/home/conan/w/cci_PR-3375/.conan/data/llvm-core/11.0.0/_/_/package/2924c9201e88f422c8a3a1b1ef25922f9aab664f" -DCMAKE_INSTALL_BINDIR="bin" -DCMAKE_INSTALL_SBINDIR="bin" -DCMAKE_INSTALL_LIBEXECDIR="bin" -DCMAKE_INSTALL_LIBDIR="lib" -DCMAKE_INSTALL_INCLUDEDIR="include" -DCMAKE_INSTALL_OLDINCLUDEDIR="include" -DCMAKE_INSTALL_DATAROOTDIR="share" -DCONAN_CMAKE_POSITION_INDEPENDENT_CODE="ON" -DCMAKE_EXPORT_NO_PACKAGE_REGISTRY="ON" -DCONAN_EXPORTED="1" -DCMAKE_SKIP_RPATH="True" -DLLVM_TARGETS_TO_BUILD="all" -DLLVM_TARGET_ARCH="host" -DLLVM_BUILD_LLVM_DYLIB="False" -DLLVM_ENABLE_PIC="True" -DLLVM_DYLIB_COMPONENTS="all" -DLLVM_ABI_BREAKING_CHECKS="WITH_ASSERTS" -DLLVM_ENABLE_WARNINGS="True" -DLLVM_ENABLE_PEDANTIC="True" -DLLVM_ENABLE_WERROR="False" -DLLVM_ENABLE_LIBCXX="False" -DLLVM_USE_RELATIVE_PATHS_IN_DEBUG_INFO="True" -DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN="False" -DLLVM_BUILD_INSTRUMENTED_COVERAGE="False" -DLLVM_OPTIMIZED_TABLEGEN="True" -DLLVM_REVERSE_ITERATION="False" -DLLVM_ENABLE_BINDINGS="False" -DLLVM_CCACHE_BUILD="False" -DLLVM_INCLUDE_TOOLS="False" -DLLVM_INCLUDE_EXAMPLES="False" -DLLVM_INCLUDE_TESTS="False" -DLLVM_INCLUDE_BENCHMARKS="False" -DLLVM_APPEND_VC_REV="False" -DLLVM_BUILD_DOCS="False" -DLLVM_ENABLE_IDE="False" -DLLVM_ENABLE_EH="True" -DLLVM_ENABLE_RTTI="True" -DLLVM_ENABLE_THREADS="True" -DLLVM_ENABLE_LTO="Off" -DLLVM_STATIC_LINK_CXX_STDLIB="False" -DLLVM_ENABLE_UNWIND_TABLES="True" -DLLVM_ENABLE_EXPENSIVE_CHECKS="False" -DLLVM_ENABLE_ASSERTIONS="True" -DLLVM_USE_NEWPM="False" -DLLVM_USE_OPROFILE="False" -DLLVM_USE_PERF="False" -DLLVM_ENABLE_Z3_SOLVER="False" -DLLVM_ENABLE_LIBPFM="False" -DLLVM_ENABLE_LIBEDIT="False" -DLLVM_ENABLE_ZLIB="True" -DLLVM_ENABLE_LIBXML2="True" -DLLVM_ENABLE_FFI="False" -Wno-dev '/home/conan/w/cci_PR-3375/.conan/data/llvm-core/11.0.0/_/_/source'