Attempt to cross-compile for arm64 Linux

.github/workflows/osrm-backend.yml

@@ -667,7 +667,7 @@ jobs:
         fi
         echo "CC=${CCOMPILER}" >> $GITHUB_ENV
         echo "CXX=${CXXCOMPILER}" >> $GITHUB_ENV
-
+    - run: cp toolchain.cmake /home/runner/.conan/data/onetbb/2021.3.0/_/_/build/a36e366b2b0ea0e76bafba6092e0a74838fad5fd/build/generators/conan_toolchain.cmake
     - name: Build and install OSRM
       run: |
         echo "Using ${JOBS} jobs"

toolchain.cmake

@@ -0,0 +1,78 @@
+# Conan automatically generated toolchain file
+# DO NOT EDIT MANUALLY, it will be overwritten
+
+# Avoid including toolchain file several times (bad if appending to variables like
+#   CMAKE_CXX_FLAGS. See https://github.com/android/ndk/issues/323
+include_guard()
+
+message(STATUS "Using Conan toolchain: ${CMAKE_CURRENT_LIST_FILE}")
+
+if(${CMAKE_VERSION} VERSION_LESS "3.15")
+    message(FATAL_ERROR "The 'CMakeToolchain' generator only works with CMake >= 3.15")
+endif()
+
+
+
+
+
+
+
+
+
+
+# Extra c, cxx, linkflags and defines
+
+
+if(DEFINED CONAN_CXX_FLAGS)
+  string(APPEND CMAKE_CXX_FLAGS_INIT " ${CONAN_CXX_FLAGS}")
+endif()
+if(DEFINED CONAN_C_FLAGS)
+  string(APPEND CMAKE_C_FLAGS_INIT " ${CONAN_C_FLAGS}")
+endif()
+if(DEFINED CONAN_SHARED_LINKER_FLAGS)
+  string(APPEND CMAKE_SHARED_LINKER_FLAGS_INIT " ${CONAN_SHARED_LINKER_FLAGS}")
+endif()
+if(DEFINED CONAN_EXE_LINKER_FLAGS)
+  string(APPEND CMAKE_EXE_LINKER_FLAGS_INIT " ${CONAN_EXE_LINKER_FLAGS}")
+endif()
+
+get_property( _CMAKE_IN_TRY_COMPILE GLOBAL PROPERTY IN_TRY_COMPILE )
+if(_CMAKE_IN_TRY_COMPILE)
+    message(STATUS "Running toolchain IN_TRY_COMPILE")
+    return()
+endif()
+
+set(CMAKE_FIND_PACKAGE_PREFER_CONFIG ON)
+
+# Definition of CMAKE_MODULE_PATH
+# the generators folder (where conan generates files, like this toolchain)
+list(PREPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR})
+
+# Definition of CMAKE_PREFIX_PATH, CMAKE_XXXXX_PATH
+# The Conan local "generators" folder, where this toolchain is saved.
+list(PREPEND CMAKE_PREFIX_PATH ${CMAKE_CURRENT_LIST_DIR} )
+
+
+
+
+
+message(STATUS "Conan toolchain: Setting BUILD_SHARED_LIBS = ON")
+set(BUILD_SHARED_LIBS ON)
+
+set(CMAKE_INSTALL_PREFIX "/home/runner/.conan/data/onetbb/2021.3.0/_/_/package/a36e366b2b0ea0e76bafba6092e0a74838fad5fd")
+set(CMAKE_INSTALL_BINDIR "bin")
+set(CMAKE_INSTALL_SBINDIR "bin")
+set(CMAKE_INSTALL_LIBEXECDIR "bin")
+set(CMAKE_INSTALL_LIBDIR "lib")
+set(CMAKE_INSTALL_INCLUDEDIR "include")
+set(CMAKE_INSTALL_OLDINCLUDEDIR "include")
+set(CMAKE_SYSTEM_PROCESSOR "aarch64")
+
+# Variables
+set(TBB_TEST OFF CACHE BOOL "Variable TBB_TEST conan-toolchain defined")
+set(TBB_STRICT OFF CACHE BOOL "Variable TBB_STRICT conan-toolchain defined")
+# Variables  per configuration
+
+
+# Preprocessor definitions
+# Preprocessor definitions per configuration