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https://github.com/zephyrproject-rtos/zephyr
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472ea92e79
Add an option for building with newlib-nano library. The newlib-nano library for ARM embedded processors is a part of the GNU Tools for ARM Embedded Processors. Add mem_alloc tests with newlib nano. Signed-off-by: Benoit Leforestier <benoit.leforestier@gmail.com>
46 lines
1.4 KiB
CMake
46 lines
1.4 KiB
CMake
# SPDX-License-Identifier: Apache-2.0
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zephyr_library()
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zephyr_library_sources(libc-hooks.c)
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# LIBC_*_DIR may or may not have been set by the toolchain. E.g. when
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# using ZEPHYR_TOOLCHAIN_VARIANT=cross-compile it will be either up to the
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# toolchain to know where it's libc implementation is, or if it is
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# unable to, it will be up to the user to specify LIBC_*_DIR vars to
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# point to a newlib implementation.
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# We need to make sure this is included before the standard system
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# header include path's since we build with -ffreestanding and need
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# our libc headers to be picked instead of the toolchain's ffreestanding
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# headers.
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if(LIBC_INCLUDE_DIR)
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zephyr_system_include_directories(${LIBC_INCLUDE_DIR})
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endif()
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if(LIBC_LIBRARY_DIR)
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set(LIBC_LIBRARY_DIR_FLAG -L${LIBC_LIBRARY_DIR})
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endif()
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# define __LINUX_ERRNO_EXTENSIONS__ so we get errno defines like -ESHUTDOWN
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# used by the network stack
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zephyr_compile_definitions(__LINUX_ERRNO_EXTENSIONS__)
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zephyr_link_libraries(
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m
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c
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${LIBC_LIBRARY_DIR_FLAG} # NB: Optional
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$<$<BOOL:${CONFIG_NEWLIB_LIBC_FLOAT_PRINTF}>:-u_printf_float>
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$<$<BOOL:${CONFIG_NEWLIB_LIBC_FLOAT_SCANF}>:-u_scanf_float>
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gcc # Lib C depends on libgcc. e.g. libc.a(lib_a-fvwrite.o) references __aeabi_idiv
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)
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if(CONFIG_NEWLIB_LIBC_NANO)
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zephyr_link_libraries(
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-specs=nano.specs
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)
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zephyr_compile_options(
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-specs=nano.specs
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)
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endif()
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