zephyr/arch/posix/CMakeLists.txt
Christopher Friedt 2c0eecaa5e posix arch: build on aarch64 / allow host-specific cmake includes
This change enables specific compiler and linker options to be used in
the case that an arch/posix/os.arch.cmake file exists.

Note: os and arch in the above case are evaluations of
CMAKE_HOST_SYSTEM_NAME and CMAKE_HOST_SYSTEM_PROCESSOR.

Otherwise, the existing "generic" compiler and linker flags in
arch/posix/CMakeLists.txt are used.

Additional flags and checks are provided in
arch/posix/Linux.aarch64.cmake.

Added scripts/user_wordsize.py to detect if userspace is 64-bit or
32-bit, which should be consistent with the value of CONFIG_64BIT
for Aarch64 on Linux.

Fixes #24842

Signed-off-by: Christopher Friedt <chrisfriedt@gmail.com>
2020-05-09 12:17:24 +02:00

56 lines
1.6 KiB
CMake

# SPDX-License-Identifier: Apache-2.0
if(EXISTS ${CMAKE_CURRENT_LIST_DIR}/${CMAKE_HOST_SYSTEM_NAME}.${CMAKE_HOST_SYSTEM_PROCESSOR}.cmake)
# @Intent: Set necessary compiler & linker options for this specific host architecture & OS
include(${CMAKE_HOST_SYSTEM_NAME}.${CMAKE_HOST_SYSTEM_PROCESSOR}.cmake)
else()
if (CONFIG_64BIT)
# some gcc versions fail to build without -fPIC
zephyr_compile_options(-m64 -fPIC)
zephyr_link_libraries(-m64)
else ()
zephyr_compile_options(-m32)
zephyr_link_libraries(-m32)
endif ()
endif()
zephyr_compile_options(
${ARCH_FLAG}
-include ${ZEPHYR_BASE}/arch/posix/include/posix_cheats.h
)
# @Intent: Obtain compiler specific flags for no freestanding compilation
toolchain_cc_no_freestanding_options()
zephyr_include_directories(${BOARD_DIR})
if (CONFIG_COVERAGE)
toolchain_cc_coverage()
endif ()
if (CONFIG_ASAN)
toolchain_cc_asan()
endif ()
if (CONFIG_UBSAN)
toolchain_cc_ubsan()
endif ()
zephyr_compile_definitions(_POSIX_C_SOURCE=200809 _XOPEN_SOURCE=600 _XOPEN_SOURCE_EXTENDED)
zephyr_ld_options(
-ldl
-pthread
)
# About the -include directive: The reason to do it this way, is because in this
# manner it is transparent to the application. Otherwise posix_cheats.h needs to
# be included in all the applications' files which define main( ), and in any
# app file which uses the pthreads like API provided by Zephyr
# ( include/posix/pthread.h / kernel/pthread.c ) [And any future API added to
# Zephyr which will clash with the native POSIX API] . It would also need to
# be included in a few zephyr kernel files.
add_subdirectory(core)