Improve ARM processor checks.

When cross-compiling for ARM, the toolchain file will likely set
CMAKE_SYSTEM_PROCESSOR to exactly "arm", but when building for ARM
natively, that is not the case and we may encounter values such as
"armv7a". Rather than enumerating each and every possible value, treat
anything that starts with "arm" other than "arm64" the same.

Author: hvdijk

modules/compiler/targets/host/CMakeLists.txt

@@ -151,9 +151,8 @@ if(CA_HOST_CROSS_COMPILERS)
     else()
       set(HostArchitecture x86_64)
     endif()
-  elseif(CMAKE_SYSTEM_PROCESSOR_TOUPPER STREQUAL ARM OR
-         CMAKE_SYSTEM_PROCESSOR_TOUPPER STREQUAL AARCH64 OR
-         CMAKE_SYSTEM_PROCESSOR_TOUPPER STREQUAL ARM64)
+  elseif(CMAKE_SYSTEM_PROCESSOR_TOUPPER MATCHES "^ARM" OR
+         CMAKE_SYSTEM_PROCESSOR_TOUPPER STREQUAL AARCH64)
     if(CA_BUILD_32_BITS OR CMAKE_SIZEOF_VOID_P EQUAL 4)
       set(HostArchitecture arm)
     else()

modules/compiler/vecz/test/lit/lit.site.cfg.py.in

@@ -31,7 +31,7 @@ lit_config.load_config(config, common_lit_cfg_path)
 
 if '@CMAKE_SYSTEM_PROCESSOR@'.casefold() in ['aarch64', 'arm64']:
     config.available_features.add('aarch64')
-elif '@CMAKE_SYSTEM_PROCESSOR@'.casefold() == 'arm':
+elif '@CMAKE_SYSTEM_PROCESSOR@'.casefold().startswith('arm'):
     config.available_features.add('arm')
 
 # Some lit tests may fail when cross-compiled, so add the native feature if not

modules/lit/lit.common.cfg.in

@@ -98,7 +98,7 @@ elif config.system_processor in ('x86', 'i686'):
     config.available_features.add('x86')
 elif config.system_processor in ('aarch64', 'arm64'):
     config.available_features.add('aarch64')
-elif config.system_processor in ('arm', 'armv7'):
+elif config.system_processor.startswith('arm'):
     config.available_features.add('arm32')
 
 config.ca_host_os = '@CMAKE_SYSTEM_NAME@'

modules/mux/targets/CMakeLists.txt

@@ -81,10 +81,10 @@ function(get_ca_host_arch parent_variable_name)
     string(TOUPPER "${CMAKE_SYSTEM_PROCESSOR}" ARCH)
   endif()
 
-  if(ARCH STREQUAL "ARM")
-    set(${parent_variable_name} "Arm" PARENT_SCOPE)
-  elseif(ARCH STREQUAL "ARM64" OR ARCH STREQUAL "AARCH64")
+  if(ARCH STREQUAL "ARM64" OR ARCH STREQUAL "AARCH64")
     set(${parent_variable_name} "AArch64" PARENT_SCOPE)
+  elseif(ARCH MATCHES "^ARM")
+    set(${parent_variable_name} "Arm" PARENT_SCOPE)
   elseif(ARCH MATCHES "^(I[3-6]86|X86)$")
     set(${parent_variable_name} "x86" PARENT_SCOPE)
   elseif(ARCH STREQUAL "X86_64" OR ARCH STREQUAL "AMD64")