[CPPRT] Add cpprt for GCC, tool

- Link it to libsup++
- Add __cxa_pure_virtual

Author: tkreuzer

sdk/cmake/gcc.cmake

@@ -601,5 +601,4 @@ target_compile_definitions(libstdc++ INTERFACE "$<$<COMPILE_LANGUAGE:CXX>:PAL_ST
 
 # Create our alias libraries
 add_library(cppstl ALIAS libstdc++)
-add_library(cpprt ALIAS libsupc++)
 

sdk/lib/CMakeLists.txt

@@ -13,9 +13,9 @@ add_subdirectory(conutils)
 add_subdirectory(cportlib)
 add_subdirectory(crt)
 add_subdirectory(cryptlib)
+add_subdirectory(cpprt)
 
 if(MSVC)
-    add_subdirectory(cpprt)
     add_subdirectory(RunTmChk)
 else()
     add_subdirectory(gcc-compat)

sdk/lib/cpprt/CMakeLists.txt

@@ -3,20 +3,30 @@ include_directories(
     ${REACTOS_SOURCE_DIR}/sdk/lib/crt/include
     ${REACTOS_SOURCE_DIR}/sdk/include/c++)
 
-list(APPEND SOURCE
-    ehvec.cpp
-    new_nothrow.cpp
-    terminate.cpp
-    typeinfo.cpp)
-
-if(ARCH STREQUAL "i386")
-  add_asm_files(cpprt_asm i386/cpprt.s)
-elseif(ARCH STREQUAL "amd64")
-  add_asm_files(cpprt_asm amd64/cpprt.s)
-elseif(ARCH STREQUAL "arm")
-  add_asm_files(cpprt_asm arm/cpprt.s)
+# We need different things, depending on the compiler
+if(MSVC)
+    list(APPEND SOURCE
+        ehvec.cpp
+        new_nothrow.cpp
+        terminate.cpp
+        typeinfo.cpp)
+    if(ARCH STREQUAL "i386")
+        add_asm_files(cpprt_asm i386/cpprt.s)
+    elseif(ARCH STREQUAL "amd64")
+        add_asm_files(cpprt_asm amd64/cpprt.s)
+    elseif(ARCH STREQUAL "arm")
+        add_asm_files(cpprt_asm arm/cpprt.s)
+    endif()
+else()
+    list(APPEND SOURCE
+        __cxa_pure_virtual.cpp)
 endif()
 
 add_library(cpprt ${SOURCE} ${cpprt_asm})
 set_target_cpp_properties(cpprt WITH_EXCEPTIONS)
 add_dependencies(cpprt xdk)
+
+# On GCC builds, we need to link against libsupc++
+if(NOT MSVC)
+    target_link_libraries(cpprt libsupc++)
+endif()

sdk/lib/cpprt/__cxa_pure_virtual.cpp

@@ -0,0 +1,13 @@
+/*
+ * PROJECT:     ReactOS C++ runtime library
+ * LICENSE:     MIT (https://spdx.org/licenses/MIT)
+ * PURPOSE:     __cxa_pure_virtual implementation
+ * COPYRIGHT:   Copyright 2024 Timo Kreuzer <[email protected]>
+ */
+
+#include <intrin.h>
+
+extern "C" void __cxa_pure_virtual(void)
+{
+    __debugbreak();
+}