Move libunwind directories to src/native/external (dotnet#64043)

* Move libunwind directories to src/native/external

* Move extra additions to single directory

* Extract coreclr configs in libunwind.cmake

* Reapply upstream patches

* Fixups

Author: am11

src/coreclr/CMakeLists.txt

@@ -107,11 +107,11 @@ if(CLR_CMAKE_HOST_UNIX)
 
     add_subdirectory(pal)
     add_subdirectory(hosts)
-else(CLR_CMAKE_HOST_UNIX)
+else()
     if(CLR_CMAKE_TARGET_UNIX)
-        add_subdirectory(pal/src/libunwind)
-    endif(CLR_CMAKE_TARGET_UNIX)
-endif(CLR_CMAKE_HOST_UNIX)
+        add_subdirectory(${CLR_SRC_NATIVE_DIR}/external/libunwind_extras ${CLR_ARTIFACTS_OBJ_DIR}/external/libunwind)
+    endif()
+endif()
 
 # Add this subdir. We install the headers for the jit.
 add_subdirectory(pal/prebuilt/inc)

src/coreclr/pal/src/CMakeLists.txt

@@ -10,16 +10,16 @@ elseif (CLR_CMAKE_TARGET_FREEBSD)
 endif()
 
 if(NOT CLR_CMAKE_USE_SYSTEM_LIBUNWIND)
-  include_directories(libunwind/include)
-  include_directories(libunwind/include/tdep)
-  include_directories(${CMAKE_CURRENT_BINARY_DIR}/libunwind/include)
-  include_directories(${CMAKE_CURRENT_BINARY_DIR}/libunwind/include/tdep)
+  include_directories(${CLR_SRC_NATIVE_DIR}/external/libunwind/include)
+  include_directories(${CLR_SRC_NATIVE_DIR}/external/libunwind/include/tdep)
+  include_directories(${CLR_ARTIFACTS_OBJ_DIR}/external/libunwind/include)
+  include_directories(${CLR_ARTIFACTS_OBJ_DIR}/external/libunwind/include/tdep)
 
-  add_subdirectory(libunwind)
+  add_subdirectory(${CLR_SRC_NATIVE_DIR}/external/libunwind_extras ${CLR_ARTIFACTS_OBJ_DIR}/external/libunwind)
 elseif(NOT CLR_CMAKE_TARGET_OSX)
   find_unwind_libs(UNWIND_LIBS)
 else()
-  add_subdirectory(libunwind)
+  add_subdirectory(${CLR_SRC_NATIVE_DIR}/external/libunwind_extras ${CLR_ARTIFACTS_OBJ_DIR}/external/libunwind)
 endif(NOT CLR_CMAKE_USE_SYSTEM_LIBUNWIND)
 
 include(configure.cmake)
@@ -251,11 +251,10 @@ endif(CLR_CMAKE_TARGET_OSX)
 
 if(NOT FEATURE_CROSSBITNESS)
   target_include_directories(coreclrpal_dac PUBLIC
-    ${CMAKE_CURRENT_SOURCE_DIR}/libunwind/include
-    ${CMAKE_CURRENT_SOURCE_DIR}/libunwind/include/tdep
-    ${CMAKE_CURRENT_BINARY_DIR}
-    ${CMAKE_CURRENT_BINARY_DIR}/libunwind/include
-    ${CMAKE_CURRENT_BINARY_DIR}/libunwind/include/tdep
+    ${CLR_SRC_NATIVE_DIR}/external/libunwind/include
+    ${CLR_SRC_NATIVE_DIR}/external/libunwind/include/tdep
+    ${CLR_ARTIFACTS_OBJ_DIR}/external/libunwind/include
+    ${CLR_ARTIFACTS_OBJ_DIR}/external/libunwind/include/tdep
   )
 endif(NOT FEATURE_CROSSBITNESS)
 

src/coreclr/pal/src/configure.cmake

@@ -1030,7 +1030,7 @@ set(SYNCHMGR_SUSPENSION_SAFE_CONDITION_SIGNALING 1)
 set(ERROR_FUNC_FOR_GLOB_HAS_FIXED_PARAMS 1)
 
 if(NOT CLR_CMAKE_USE_SYSTEM_LIBUNWIND)
-  list(INSERT CMAKE_REQUIRED_INCLUDES 0 ${CMAKE_CURRENT_SOURCE_DIR}/libunwind/include ${CMAKE_CURRENT_BINARY_DIR}/libunwind/include)
+  list(INSERT CMAKE_REQUIRED_INCLUDES 0 ${CLR_SRC_NATIVE_DIR}/external/libunwind/include ${CLR_ARTIFACTS_OBJ_DIR}/external/libunwind/include)
 endif()
 
 check_c_source_compiles("

…/pal/src/libunwind/libunwind-version.txt src/native/external/libunwind-version.txtsrc/coreclr/pal/src/libunwind/libunwind-version.txt renamed to src/native/external/libunwind-version.txt src/coreclr/pal/src/libunwind/libunwind-version.txt renamed to src/native/external/libunwind-version.txt

@@ -1,8 +1,6 @@
 v1.6.2
 https://github.com/libunwind/libunwind/commit/b3ca1b59a795a617877c01fe5d299ab7a07ff29d
 
-Replace CMakeLists.txt, src/CMakeLists.txt, configure.cmake with .NET custom version
-Keep .NET oop directory
 Reapply changes from https://github.com/dotnet/runtime/commit/1b5719c2e3dde393531eaeb5b5cde05dabeef5b8
 Apply https://github.com/libunwind/libunwind/pull/317
 Apply https://github.com/libunwind/libunwind/pull/333