Re-organisation + stdint.h and stddef.h

CMakeLists.txt

@@ -1,14 +1,53 @@
 cmake_minimum_required(VERSION 3.5)
 project(photon)
 
-file(GLOB_RECURSE photon_sources
-    ${CMAKE_SOURCE_DIR}/photon/*.c
-    ${CMAKE_SOURCE_DIR}/photon/*.h)
-message(STATUS "Sources: " ${photon_sources})
+macro(subdirlist result curdir)
+    file(GLOB children RELATIVE ${curdir} ${curdir}/*)
+    set(dirlist "")
+    foreach (child ${children})
+        if (IS_DIRECTORY ${curdir}/${child})
+            list(APPEND dirlist ${child})
+        endif()
+    endforeach()
+    set(${result} ${dirlist})
+endmacro()
 
-add_library(photon_obj OBJECT ${photon_sources})
+subdirlist(machine_dirs ${CMAKE_CURRENT_SOURCE_DIR}/photon/libc/machine)
 
-add_library(photon SHARED $<TARGET_OBJECTS:photon_obj>)
-add_library(photon_s STATIC $<TARGET_OBJECTS:photon_obj>)
+if (NOT PLATFORM)
+    set(PLATFORM "linux")
+endif ()
 
-set_property(TARGET photon_obj PROPERTY POSITION_INDEPENDENT_CODE ON)
+if (NOT MACHINE)
+    set(supported_machines "")
+    foreach (dir ${machine_dirs})
+        set(supported_machines "${supported_machines}${dir} ")
+    endforeach (dir)
+
+    message(FATAL_ERROR "No machine architecture specified.\n"
+        " Supported machines: ${supported_machines}\n"
+        " Ex. `cmake -DMACHINE=x86_64 <dir>`")
+endif ()
+
+if (NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/photon/libc/sys/${PLATFORM})
+    message(FATAL_ERROR "Unsupported platform: ${PLATFORM}")
+endif ()
+
+
+message(STATUS "Target platform: ${PLATFORM}")
+
+set(photon_libc_sources "")
+set(generic_dirs string include)
+
+foreach (dir ${generic_dirs})
+    file(GLOB_RECURSE dir_sources ${CMAKE_CURRENT_SOURCE_DIR}/photon/libc/${dir}/*.c)
+    set(photon_libc_sources ${photon_libc_sources} ${dir_sources})
+endforeach (dir)
+
+file(GLOB_RECURSE platform_sources ${CMAKE_CURRENT_SOURCE_DIR}/photon/sys/${PLATFORM})
+set(photon_libc_sources ${photon_libc_sources} ${platform_sources})
+
+add_library(c STATIC ${photon_libc_sources})
+target_compile_options(c PRIVATE -ffreestanding -nostdlib -nostdinc)
+
+target_include_directories(c PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/photon/libc/include)