25e1b12ec0
To support arm-ds / armlink it is required that the weak main is located
in an object externally to the object using the weak symbol.
If the weak symbol is inside the object referring to it, then the weak
symbol will be used and this will result in
```
Error: L6200E: Symbol __ARM_use_no_argv multiply defined
(by init.o and main.o).
```
as both the weak and strong symbols are used.
Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
116 lines
2.5 KiB
CMake
116 lines
2.5 KiB
CMake
# SPDX-License-Identifier: Apache-2.0
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# kernel is a normal CMake library and not a zephyr_library because it
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# should not be --whole-archive'd
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# If a pre-built static library containing kernel code exists in
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# this directory, libkernel.a, link it with the application code
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# instead of building from source.
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zephyr_library_get_current_dir_lib_name(${ZEPHYR_BASE} libkernel_stem)
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set(libkernel ${CMAKE_CURRENT_SOURCE_DIR}/lib${libkernel_stem}${CMAKE_STATIC_LIBRARY_SUFFIX})
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unset(libkernel_stem)
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if(EXISTS ${libkernel})
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add_library(kernel INTERFACE)
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target_link_libraries(kernel INTERFACE ${libkernel})
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else()
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list(APPEND kernel_files
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main_weak.c
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banner.c
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device.c
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errno.c
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fatal.c
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init.c
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kheap.c
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mem_slab.c
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thread.c
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version.c
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)
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if(CONFIG_MULTITHREADING)
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list(APPEND kernel_files
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idle.c
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mailbox.c
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msg_q.c
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mutex.c
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pipes.c
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queue.c
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sem.c
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stack.c
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system_work_q.c
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work.c
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sched.c
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condvar.c
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)
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if(CONFIG_SMP)
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list(APPEND kernel_files
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smp.c)
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endif()
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endif()
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if(CONFIG_XIP)
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list(APPEND kernel_files
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xip.c)
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endif()
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if(CONFIG_DEMAND_PAGING_STATS)
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list(APPEND kernel_files
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paging/statistics.c)
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endif()
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add_library(kernel ${kernel_files})
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# Kernel files has the macro __ZEPHYR_SUPERVISOR__ set so that it
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# optimizes the code when userspace is enabled.
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set_target_properties(
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kernel
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PROPERTIES
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COMPILE_DEFINITIONS
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__ZEPHYR_SUPERVISOR__
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)
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target_sources_ifdef(CONFIG_STACK_CANARIES kernel PRIVATE compiler_stack_protect.c)
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target_sources_ifdef(CONFIG_SYS_CLOCK_EXISTS kernel PRIVATE timeout.c timer.c)
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target_sources_ifdef(CONFIG_ATOMIC_OPERATIONS_C kernel PRIVATE atomic_c.c)
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target_sources_ifdef(CONFIG_MMU kernel PRIVATE mmu.c)
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target_sources_ifdef(CONFIG_POLL kernel PRIVATE poll.c)
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if(${CONFIG_KERNEL_MEM_POOL})
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target_sources(kernel PRIVATE mempool.c)
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endif()
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# The last 2 files inside the target_sources_ifdef should be
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# userspace_handler.c and userspace.c. If not the linker would complain.
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# This order has to be maintained. Any new file should be placed
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# above these 2 files.
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target_sources_ifdef(
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CONFIG_USERSPACE
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kernel PRIVATE
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futex.c
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mem_domain.c
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userspace_handler.c
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userspace.c
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)
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if(CONFIG_CACHE_MANAGEMENT AND CONFIG_USERSPACE)
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target_sources(kernel PRIVATE cache_handlers.c)
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endif()
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target_include_directories(kernel PRIVATE
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${ZEPHYR_BASE}/kernel/include
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${ARCH_DIR}/${ARCH}/include
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)
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target_link_libraries(kernel zephyr_interface)
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endif()
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add_dependencies(kernel zephyr_generated_headers)
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unset(libkernel)
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