cmake: "fix" compiler stuff

I have no idea if i've made things better or worse
with these changes, but tbh i don't really care.
It didn't compile (with the upcoming changes to
kprintf(), that is) before, it does compile now.
End of story.

CMakeLists.txt

@@ -1,5 +1,13 @@
 # See the end of this file for copyright and license terms.
 
+# Look, i have absolutely zero patience when it comes to fucking around with
+# build tools.  This is most probably not the correct way to do it (especially
+# with the cross compiler setup in arch/<arch>/config/toolchain.cmake), but i
+# literally do not care.  After hours of Duck Duck Googling random shit, i
+# finally got this to work (kind of).  If you know your way around CMake, you
+# are more than welcome to submit a PR that fixes this mess, i would appreciate
+# it very much.  But i certainly don't have the energy for it.
+
 cmake_minimum_required(VERSION 3.14.0)
 
 project(gaybsd VERSION 0.1.0 LANGUAGES C ASM)
@@ -20,7 +28,7 @@ configure_file(
 
 include("arch/${ARCH}/config/toolchain.cmake")
 
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ffreestanding")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ffreestanding -fno-stack-protector")
 set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -D_ASM_SOURCE")
 if(DEBUG)
     # -Og on gcc optimizes for the best debugging experience, but apparently this
@@ -38,8 +46,8 @@ endif()
 
 # --whole-archive ensures no (seemingly) unused symbols
 # like the multiboot table are omitted from the archive
-set(CMAKE_LINKER_FLAGS "${CMAKE_LINKER_FLAGS} -nodefaultlibs -static --whole-archive")
-set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -nostdlib -nodefaultlibs -static")
+set(CMAKE_LINKER_FLAGS "${CMAKE_LINKER_FLAGS} -ffreestanding -static --whole-archive")
+set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -ffreestanding -nostdlib -static")
 
 set(GAY_INCLUDE_DIRS
     "${CMAKE_SOURCE_DIR}/include"
@@ -67,6 +75,10 @@ target_sources(gaybsd_image.elf PRIVATE "${CMAKE_CURRENT_BINARY_DIR}/_empty.c")
 target_link_libraries(gaybsd_image.elf PRIVATE
     gay_arch
     gay_kernel
+    # libgcc is needed for some internal stuff like 64-bit division which
+    # isn't natively supported by the CPU instruction set (on i686).
+    # Apparently, clang uses that too.
+    gcc
 )
 
 add_custom_target(gaybsd_image DEPENDS gaybsd_image.elf)

arch/x86/config/toolchain.cmake

@@ -10,14 +10,22 @@ set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
 set(CMAKE_AR            ${TOOLCHAIN_PATH}/${CMAKE_EXECUTABLE_PREFIX}ar${CMAKE_EXECUTABLE_SUFFIX})
 set(CMAKE_ASM_COMPILER  ${TOOLCHAIN_PATH}/${CMAKE_EXECUTABLE_PREFIX}clang${CMAKE_EXECUTABLE_SUFFIX})
 set(CMAKE_C_COMPILER    ${TOOLCHAIN_PATH}/${CMAKE_EXECUTABLE_PREFIX}clang${CMAKE_EXECUTABLE_SUFFIX})
-set(CMAKE_LINKER        ${TOOLCHAIN_PATH}/${CMAKE_EXECUTABLE_PREFIX}ld${CMAKE_EXECUTABLE_SUFFIX})
+set(CMAKE_LINKER        ${TOOLCHAIN_PATH}/${CMAKE_EXECUTABLE_PREFIX}ld.lld${CMAKE_EXECUTABLE_SUFFIX})
 set(CMAKE_OBJCOPY       ${TOOLCHAIN_PATH}/${CMAKE_EXECUTABLE_PREFIX}objcopy${CMAKE_EXECUTABLE_SUFFIX} CACHE INTERNAL "")
 set(CMAKE_RANLIB        ${TOOLCHAIN_PATH}/${CMAKE_EXECUTABLE_PREFIX}ranlib${CMAKE_EXECUTABLE_SUFFIX} CACHE INTERNAL "")
 set(CMAKE_SZE           ${TOOLCHAIN_PATH}/${CMAKE_EXECUTABLE_PREFIX}szr${CMAKE_EXECUTABLE_SUFFIX} CACHE INTERNAL "")
 set(CMAKE_STRIP         ${TOOLCHAIN_PATH}/${CMAKE_EXECUTABLE_PREFIX}strip${CMAKE_EXECUTABLE_SUFFIX} CACHE INTERNAL "")
 
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -target i686-none -m32")
-set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -target i686-none -m32")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -m32 -march=i686")
+set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -m32 -march=i686")
+
+set(triple i686-pc-none-elf)
+set(CMAKE_C_COMPILER_TARGET ${triple})
+set(CMAKE_ASM_COMPILER_TARGET ${triple})
+
+set(CMAKE_EXE_LINKER_FLAGS_INIT "-fuse-ld=lld")
+set(CMAKE_MODULE_LINKER_FLAGS_INIT "-fuse-ld=lld")
+set(CMAKE_SHARED_LINKER_FLAGS_INIT "-fuse-ld=lld")
 
 configure_file(
     "${CMAKE_CURRENT_LIST_DIR}/kernel_config.ld.in"