Cmake build generator support: build stage

Multi-target architecture implementation:
    each root source code directory presents the one
    *INTERFACE* target to it's subdirectory subtargets
    that link only as *STATIC* library.
    For instance, *arch* directory presents *Architecture* target
    then *Architecture* target has *CPUID*, *IO*, *PORT*
    and etc. dependencies

Exact order of linking targets is: boot.o CRTIBUNDLE <TARGETS> CRTNBUNDLE.
Sequence destruction cause to UB. Please to pay attention to this.

TODO
- Debug information
- Build type
- Toolchain file
- Image creation
- Build by WinGW compiler on Windows platform (optional)

Signed-off-by: Alexey Gavrilov <alexey.gavrilov@mail.com>

3 files changed, 24 insertions, 1 deletions

diff --git a/arch/x86/gdt/CMakeLists.txt b/arch/x86/gdt/CMakeLists.txt
new file mode 100644
index 0000000..57e3c26
--- /dev/null
+++ b/arch/x86/gdt/CMakeLists.txt
@@ -0,0 +1,23 @@
+add_library(GDT STATIC)
+target_link_libraries(GDT PUBLIC CXX_COMPILER_REQUIREMENTS)
+
+target_sources(GDT PRIVATE
+    ${CMAKE_CURRENT_LIST_DIR}/Gdt.cpp
+)
+
+target_sources(GDT
+    PUBLIC
+        FILE_SET HEADERS
+        FILES
+            ${CMAKE_CURRENT_LIST_DIR}/Gdt.h
+)
+
+target_link_libraries(Architecture INTERFACE GDT)
+
+add_library(GDTASM OBJECT)
+
+target_sources(GDTASM PRIVATE
+    ${CMAKE_CURRENT_LIST_DIR}/SwitchToGdt.nasm
+)
+
+target_sources(ArchitectureAssemblerSources PRIVATE $<TARGET_OBJECTS:GDTASM>)
diff --git a/arch/x86/gdt/Gdt.h b/arch/x86/gdt/Gdt.h
index 321d67c..8f1d967 100755
--- a/arch/x86/gdt/Gdt.h
+++ b/arch/x86/gdt/Gdt.h
@@ -1,7 +1,7 @@
 #ifndef GDT_H
 #define GDT_H
 
-#include <types.h>
+#include <Types.h>
 #include <MemoryOperations.h>
 
 
diff --git a/arch/x86/gdt/SwitchToGdt.s b/arch/x86/gdt/SwitchToGdt.nasm
index 52ebbc7..52ebbc7 100644
--- a/arch/x86/gdt/SwitchToGdt.s
+++ b/arch/x86/gdt/SwitchToGdt.nasm