objective.git, branch cmake

Correct CRTXBUNDLE static targets into separate objects

2026-04-02T12:04:08Z

This correct refers to a wrong order of linking CRT objects. When targets are separates into 4: CRTI, CRTBEGIN, CRTEND, CRTN the order became a little bit correct. TODO - Image with grub bootloader creation - Build under window platform (optional) Signed-off-by: Alexey Gavrilov

Move to CHECK_START messages

2026-03-30T10:54:13Z

More convenient requirements checks way by CHECK_START message argument. Signed-off-by: Alexey Gavrilov

Cmake status information output

2026-03-30T10:50:25Z

Reinforce of compiler, C runtime, architecture checks at cmake configuration. Compiler check means continue building at the cmake configure stage only for supported compilers. Use unsupported compiler involves immediate build process stopping. C runtime check means finding of runtime objects. Especially for *crtbegin.o* and *crtend.o* files. Architecture means *ObjectiveProject_ARCHITECTURE* variable is set. That variable configure at toolchain file by default and cannot override if toolchain file is passed. TODO - Image creation - Build under window platform (optional) Signed-off-by: Alexey Gavrilov

Set architecture bitness in nasm files

2026-03-28T08:29:22Z

Signed-off-by: Alexey Gavrilov

Cmake build type at the generation stage

2026-03-28T07:55:53Z

Fix in *nasm* files - set architecture bitness. Move compiler flags from *toolchain* file to *requirements target* considering cmake files. This solution allows available of multi-configurations generators to pass compiler options without affecting on single-configuration generators. TODO - Debug information - Image creation - Build under window platform (optional) Signed-off-by: Alexey Gavrilov

Cmake build generator support: toolchain file

2026-03-28T04:36:06Z

Two toolchain files for clang and gcc compilers under x86 platform. Debug flags also passed at the configure time. Signed-off-by: Alexey Gavrilov

Cmake build generator support: build stage

2026-03-27T07:03:55Z

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 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

Global variables initialization implementation

2025-12-20T12:39:05Z

User implementation of C runtime library objects (`crti.s` and `crtn.s`) for initialization (termination functionality are ignored). Changing files order passed to the linker. Rough order is: boot.s crti.o crtbegin.o other-link-objects.o crtend.o crtn.o Signed-off-by: Alexey Gavrilov

Linker script refactor

2025-12-20T08:56:06Z

In general this update touching sections for initialization and destruction of global variables. DISCARD sections added (.fini and .comment) and particular sections (.ctors, .dtors, .init, .fini) moved into more common sections (.rodata and .text) accordingly. This decision allows to save a some RAM. Signed-off-by: Alexey Gavrilov

Linker script rework

2025-12-20T07:16:47Z

`memory.ld` is a architecture-dependent ld config provides some general symbols which every `memory.ld` config must assign and memory regions associated with each output section. 'linker.ld' config file presents segments configuration. Multiboot section filling move in the 'linker.ld' file. Recommendation for further patches: controlled logic implementation for multiboot version and header/entries in build configuration tool (CMake or make). For instance, multiboot version and video mode selection through variable passing in build system: `cmake ... -DMULTIBOOT_VERSION=2 -DMULTIBOOT_VIDEO_MODE=TEXT_VIDEO_MODE` or 'export MULTIBOOT_VERSION=2; export MULTIBOOT_VIDEO_MODE=TEXT_VIDEO_MODE'. Then build system do proper filling of `.multiboot` section depends on passing variables. Signed-off-by: Alexey Gavrilov