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kconfig: Clean up header comments and make them consistent Use this short header style in all Kconfig files: # <description> # <copyright> # <license> ... Also change all <description>s from # Kconfig[.extension] - Foo-related options to just # Foo-related options It's clear enough that it's about Kconfig. The <description> cleanup was done with this command, along with some manual cleanup (big letter at the start, etc.) git ls-files '*Kconfig*' | \ xargs sed -i -E '1 s/#\s*Kconfig[\w.-]*\s*-\s*/# /' Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2019-11-01 13:45:29 +01:00
# C library
libc: rework libc selection and reduce Kconfigs Moved all libc Kconfigs to where the code is and remove the default Kconfig for selecting the minimal libc. Minimal libc is now the default if nothing else is configured in. Removed the options for extended libc, this obviously was restricting features in the minimal libc without a good reason, most of the functions are available directly when using newlib, so there is no reason why we need to restrict those in minimal libc. Jira: ZEP-1440 Change-Id: If0a3adf4314e2ebdf0e139dee3eb4f47ce07aa89 Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2016-12-15 11:16:55 -05:00
# Copyright (c) 2016 Intel Corporation
license: Replace Apache boilerplate with SPDX tag Replace the existing Apache 2.0 boilerplate header with an SPDX tag throughout the zephyr code tree. This patch was generated via a script run over the master branch. Also updated doc/porting/application.rst that had a dependency on line numbers in a literal include. Manually updated subsys/logging/sys_log.c that had a malformed header in the original file. Also cleanup several cases that already had a SPDX tag and we either got a duplicate or missed updating. Jira: ZEP-1457 Change-Id: I6131a1d4ee0e58f5b938300c2d2fc77d2e69572c Signed-off-by: David B. Kinder <david.b.kinder@intel.com> Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2017-01-18 17:01:01 -08:00
# SPDX-License-Identifier: Apache-2.0
libc: rework libc selection and reduce Kconfigs Moved all libc Kconfigs to where the code is and remove the default Kconfig for selecting the minimal libc. Minimal libc is now the default if nothing else is configured in. Removed the options for extended libc, this obviously was restricting features in the minimal libc without a good reason, most of the functions are available directly when using newlib, so there is no reason why we need to restrict those in minimal libc. Jira: ZEP-1440 Change-Id: If0a3adf4314e2ebdf0e139dee3eb4f47ce07aa89 Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2016-12-15 11:16:55 -05:00
libc: Added Kconfig choice to select C library Added Kconfig choice to select C library implementation Signed-off-by: Jan Van Winkel <jan.van_winkel@dxplore.eu>
2019-08-15 20:39:20 +02:00
config REQUIRES_FULL_LIBC
lib/libc: Allow REQUIRES_FULL_LIBC to be selected by applications Add a prompt to the Kconfig symbol so that applications can select this in their configuration to guide C library selection away from the minimal C library. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-02-10 11:03:11 -08:00
prompt "Require complete C library"
libc: Added Kconfig choice to select C library Added Kconfig choice to select C library implementation Signed-off-by: Jan Van Winkel <jan.van_winkel@dxplore.eu>
2019-08-15 20:39:20 +02:00
bool
help
lib/libc: Allow REQUIRES_FULL_LIBC to be selected by applications Add a prompt to the Kconfig symbol so that applications can select this in their configuration to guide C library selection away from the minimal C library. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-02-10 11:03:11 -08:00
Select a C library implementation that provides a complete C library
implementation, rather than the subset provided by MINIMAL_LIBC.
libc: Added Kconfig choice to select C library Added Kconfig choice to select C library implementation Signed-off-by: Jan Van Winkel <jan.van_winkel@dxplore.eu>
2019-08-15 20:39:20 +02:00
libc: Add REQUIRES_FLOAT_PRINTF to indirectly set printf support Instead of making applications use C library specific settings to enable floating point support in printf, provide this indirect symbol which then detects which C library is in use and selects the correct configuration for each. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-09-28 15:14:09 -07:00
config REQUIRES_FLOAT_PRINTF
bool "Requires floating point support in printf"
select CBPRINTF_FP_SUPPORT if MINIMAL_LIBC
select NEWLIB_LIBC_FLOAT_PRINTF if NEWLIB_LIBC
help
Select a printf implementation that provides a complete
implementation including floating point support.
lib/libc: Add FULL_LIBC_SUPPORTED helper Kconfig symbol This symbol is selected when the target has any full libc available. This allows tests to filter on this condition. It doesn't depend on whether the application actually selects that library, only whether requesting a full C library would work. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-02-08 13:44:39 -08:00
config FULL_LIBC_SUPPORTED
bool
help
Selected when the target has at least one C library that offers a
complete implementation and which would be selected when
REQUIRES_FULL_LIBC is set.
lib/libc: Replace SUPPORT_MINIMAL_LIBC with MINIMAL_LIBC_SUPPORTED Clean up libc-related symbols to use a common pattern. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-02-10 11:11:29 -08:00
config MINIMAL_LIBC_SUPPORTED
armclang: ARM Compiler C library support Support for ARM Compiler C library. This commit add support for the ARM Compiler C libary in: - Kconfig - libc/armstdc A new Kconfig symbol is added to allow a toolchain to specify if they support linking with the minimal C library. Also the CMake variable `TOOLCHAIN_HAS_NEWLIB` is exported to Kconfig so that CONFIG_NEWLIB_LIBS can only be enabled if the toolchain has newlib. The armclang toolchain selects the CMake scatter file generator and disables support for the LD linker template which is not supported by armlink. For the ARM Compiler C library, a corresponding lib/libc/armstc/ folder with a minimal implementation to work with the ARM Compiler C library is added. Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2021-08-15 23:14:21 +02:00
bool
lib/libc/Kconfig: Fix libC depends with NATIVE_APPlICATION NATIVE_APPlICATION (old native_posix) does not support bulding with the any other library than the host libC (EXTERNAL_LIBC). MINIMAL_LIBC_SUPPORTED defaulted to y always, and instead the depends was set in the MINIMAL_LIBC choice. This lead to the right library selected, but an incorrectly set MINIMAL_LIBC_SUPPORTED. Many tests filter based on MINIMAL_LIBC_SUPPORTED, so they were not filtered out appropriately. Let's place the depends in the right place to avoid this problem. Also remove a redundant depends on for PICOLIBC and NEWLIB_LIBC which already have the dependency in their respective _SUPPORTED option. Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
2024-09-14 08:57:56 +02:00
depends on !NATIVE_APPLICATION
armclang: ARM Compiler C library support Support for ARM Compiler C library. This commit add support for the ARM Compiler C libary in: - Kconfig - libc/armstdc A new Kconfig symbol is added to allow a toolchain to specify if they support linking with the minimal C library. Also the CMake variable `TOOLCHAIN_HAS_NEWLIB` is exported to Kconfig so that CONFIG_NEWLIB_LIBS can only be enabled if the toolchain has newlib. The armclang toolchain selects the CMake scatter file generator and disables support for the LD linker template which is not supported by armlink. For the ARM Compiler C library, a corresponding lib/libc/armstc/ folder with a minimal implementation to work with the ARM Compiler C library is added. Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2021-08-15 23:14:21 +02:00
default y
lib/libc: Replace SUPPORT_MINIMAL_LIBC with MINIMAL_LIBC_SUPPORTED Clean up libc-related symbols to use a common pattern. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-02-10 11:11:29 -08:00
help
Selected when the target has support for the minimal C library
armclang: ARM Compiler C library support Support for ARM Compiler C library. This commit add support for the ARM Compiler C libary in: - Kconfig - libc/armstdc A new Kconfig symbol is added to allow a toolchain to specify if they support linking with the minimal C library. Also the CMake variable `TOOLCHAIN_HAS_NEWLIB` is exported to Kconfig so that CONFIG_NEWLIB_LIBS can only be enabled if the toolchain has newlib. The armclang toolchain selects the CMake scatter file generator and disables support for the LD linker template which is not supported by armlink. For the ARM Compiler C library, a corresponding lib/libc/armstc/ folder with a minimal implementation to work with the ARM Compiler C library is added. Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2021-08-15 23:14:21 +02:00
lib/libc: Add NEWLIB_LIBC_SUPPORTED This reflects whether newlib is available in the environment. This symbol should be used in place of TOOLCHAIN_HAS_NEWLIB. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-02-10 14:59:26 -08:00
config NEWLIB_LIBC_SUPPORTED
bool
default y
depends on "$(TOOLCHAIN_HAS_NEWLIB)" = "y"
lib/libc/Kconfig: Fix libC depends with NATIVE_APPlICATION NATIVE_APPlICATION (old native_posix) does not support bulding with the any other library than the host libC (EXTERNAL_LIBC). MINIMAL_LIBC_SUPPORTED defaulted to y always, and instead the depends was set in the MINIMAL_LIBC choice. This lead to the right library selected, but an incorrectly set MINIMAL_LIBC_SUPPORTED. Many tests filter based on MINIMAL_LIBC_SUPPORTED, so they were not filtered out appropriately. Let's place the depends in the right place to avoid this problem. Also remove a redundant depends on for PICOLIBC and NEWLIB_LIBC which already have the dependency in their respective _SUPPORTED option. Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
2024-09-14 08:57:56 +02:00
depends on !NATIVE_APPLICATION
lib/libc: Add FULL_LIBC_SUPPORTED helper Kconfig symbol This symbol is selected when the target has any full libc available. This allows tests to filter on this condition. It doesn't depend on whether the application actually selects that library, only whether requesting a full C library would work. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-02-08 13:44:39 -08:00
select FULL_LIBC_SUPPORTED
lib/libc: Add NEWLIB_LIBC_SUPPORTED This reflects whether newlib is available in the environment. This symbol should be used in place of TOOLCHAIN_HAS_NEWLIB. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-02-10 14:59:26 -08:00
help
Selected when the target has support for the newlib C library
libc/picolibc: Clean up Picolibc Kconfig for C++ libstdc++ is supported with Picolibc only when the toolchain version of Picolibc is use -- libstdc++ must be built using a specific Picolibc build and libstdc++ is included with the toolchain. Ideally, we'd allow the use of the Picolibc module whenever we weren't using the GNU libstdc++, including when using the minimal libc++. However, the obvious dependency settings create a loop: config PICOLIBC depends on PICOLIBC_SUPPORTED config PICOLIBC_SUPPORTED depends on !(GLIBCXX_LIBCPP && "$(ZEPHYR_TOOCHAIN_VARIANT" = "zephyr") config GLIBCXX_LIBCPP depends on NEWLIB_LIBC || PICOLIBC To break this loop, we replace GLIBCXX_LIBCPP in the second block with CPP: config PICOLIBC_SUPPORTED depends on !(CPP && "$(ZEPHYR_TOOCHAIN_VARIANT" = "zephyr") This means that picolibc cannot be used with any C++ apps when using the Zephyr SDK, even when not using the GNU libstdc++. However, Zephyr SDK 0.16 will come with an additional Kconfig file that includes: config PICOLIBC_SUPPORTED def_bool y depends on "$(ZEPHYR_TOOLCHAIN_VARIANT)" = "zephyr" This will override the Kconfig bits included in Zephyr and allow use of the Picolibc module with C++ code, including using the minimal libc++ bits. Signed-off-by: Keith Packard <keithp@keithp.com>
2022-11-02 13:11:41 -07:00
# Picolibc with C++ support in Zephyr SDK is handled by Zephyr SDK's own Kconfig.
lib/libc: Add picolibc support (aarch32, aarch64 and RISC-V) [v21] Picolibc is a fork of newlib designed and tested on embedded systems. It offers a smaller memory footprint (both ROM and RAM), and native TLS support, which uses the Zephyr TLS support. By default, the full printf version is included in the executable, which includes exact floating point and long long input and output. A configuration option has been added to switch to the integer-only version (which also omits long long support). Here are some size comparisons using qemu-cortex-m3 and this application (parameters passed to printf to avoid GCC optimizing it into puts): void main(void) { printf("Hello World! %s %d\n", CONFIG_BOARD, 12); } FLASH SRAM minimal 8696 3952 picolibc int 7600 3960 picolibc float 12304 3960 newlib-nano int 11696 4128 newlib-nano float 30516 4496 newlib 34800 6112 --- v2: Include picolibc-tls.ld v3: Document usage in guides/c_library.rst and getting_started/toolchain_other_x_compilers.rst v4: Lost the lib/libc/picolibc directory somehow! v5: Add PICOLIBC_ALIGNED_HEAP_SIZE configuration option. Delete PICOLIBC_SEMIHOST option support code v6: Don't allocate static RAM for TLS values; TLS values only need to be allocated for each thread. v7: Use arm coprocessor for TLS pointer storage where supported for compatibility with the -mtp=cp15 compiler option (or when the target cpu type selects this option) Add a bunch of tests Round TLS segment up to stack alignment so that overall stack remains correctly aligned Add aarch64 support Rebase to upstream head v8: Share NEWLIB, NEWLIB_NANO and PICOLIBC library configuration variables in a single LIBC_PARTITIONS variable instead of having separate PICOLIBC_PART and NEWLIB_PART variables. v9: Update docs to reference pending sdk-ng support for picolibc v10: Support memory protection by creating a partition for picolibc shared data and any pre-defined picolibc heap. v11: Fix formatting in arch/arm/core/aarch64/switch.S v12: Remove TLS support from this patch now that TLS is upstream Require THREAD_LOCAL_STORAGE when using PICOLIBC for architectures that support it. v13: Merge errno changes as they're only needed for picolibc. Adapt cmake changes suggested by Torsten Tejlmand Rasmussen v14: Update to picolibc 1.7 and newer (new stdin/stdout/stderr ABI) v15: Respond to comments from dcpleung: * switch kernel/errno to use CONFIG_LIBC_ERRNO instead of CONFIG_PICOLIBC * Add comment to test/lib/sprintf as to why the %n test was disabled for picolibc. v16: Switch picolibc to a module built with Zephyr. This eliminates toolchain dependencies and allows compiler settings for Zephyr to also be applied to picolibc. v17: Provide Zephyr-specific 'abort' implementation. Support systems with MMU v18: Allow use of toolchain picolibc version. v19: Use zephyr/ for zephyr headers v20: Add locking Use explicit commit for picolibc module v21: Create PICOLIBC_SUPPORTED config param. Set on arc, arm, arm64, mips and riscv architectures. Signed-off-by: Keith Packard <keithp@keithp.com>
2020-10-26 19:07:50 -07:00
config PICOLIBC_SUPPORTED
bool
libc: Add remaining picolibc-supported targets Picolibc now supports all of the Zephyr SDK target architectures for C. qemu_x86_tiny needs fixes to get the libc partition linked into the right spot. See issue #54148 Signed-off-by: Keith Packard <keithp@keithp.com>
2022-10-12 11:48:26 -07:00
depends on !NATIVE_APPLICATION
lib/libc: select PICOLIBC_SUPPORTED if toolchain has it or module exists Currently, `PICOLIBC_SUPPORTED` could be enabled even when neither the toolchain has picolibc nor the picolibc module is present, this can be the case when Zephyr is built with external toolchain (non-Zephyr SDK) + external build system where PICOLIBC module doesn't exist. Fix this by having `PICOLIBC_SUPPORTED` depends on either toolchain OR module, while taking the libc++ into consideration. Here's the full logic table of when the PICOLIBC should be marked as supported. libc++ TOOLCHAIN MODULE PICOLIBC_SUPPORTED 0 0 0 0 0 0 1 1 0 1 0 1 0 1 1 1 1 0 0 0 1 0 1 0 1 1 0 1 1 1 1 1 Co-authored-by: Keith Packard <keithp@keithp.com> Signed-off-by: Yong Cong Sin <ycsin@meta.com>
2024-07-02 11:18:18 +08:00
depends on ("$(TOOLCHAIN_HAS_PICOLIBC)" = "y") || (ZEPHYR_PICOLIBC_MODULE && !REQUIRES_FULL_LIBCPP)
lib/libc: Add picolibc support (aarch32, aarch64 and RISC-V) [v21] Picolibc is a fork of newlib designed and tested on embedded systems. It offers a smaller memory footprint (both ROM and RAM), and native TLS support, which uses the Zephyr TLS support. By default, the full printf version is included in the executable, which includes exact floating point and long long input and output. A configuration option has been added to switch to the integer-only version (which also omits long long support). Here are some size comparisons using qemu-cortex-m3 and this application (parameters passed to printf to avoid GCC optimizing it into puts): void main(void) { printf("Hello World! %s %d\n", CONFIG_BOARD, 12); } FLASH SRAM minimal 8696 3952 picolibc int 7600 3960 picolibc float 12304 3960 newlib-nano int 11696 4128 newlib-nano float 30516 4496 newlib 34800 6112 --- v2: Include picolibc-tls.ld v3: Document usage in guides/c_library.rst and getting_started/toolchain_other_x_compilers.rst v4: Lost the lib/libc/picolibc directory somehow! v5: Add PICOLIBC_ALIGNED_HEAP_SIZE configuration option. Delete PICOLIBC_SEMIHOST option support code v6: Don't allocate static RAM for TLS values; TLS values only need to be allocated for each thread. v7: Use arm coprocessor for TLS pointer storage where supported for compatibility with the -mtp=cp15 compiler option (or when the target cpu type selects this option) Add a bunch of tests Round TLS segment up to stack alignment so that overall stack remains correctly aligned Add aarch64 support Rebase to upstream head v8: Share NEWLIB, NEWLIB_NANO and PICOLIBC library configuration variables in a single LIBC_PARTITIONS variable instead of having separate PICOLIBC_PART and NEWLIB_PART variables. v9: Update docs to reference pending sdk-ng support for picolibc v10: Support memory protection by creating a partition for picolibc shared data and any pre-defined picolibc heap. v11: Fix formatting in arch/arm/core/aarch64/switch.S v12: Remove TLS support from this patch now that TLS is upstream Require THREAD_LOCAL_STORAGE when using PICOLIBC for architectures that support it. v13: Merge errno changes as they're only needed for picolibc. Adapt cmake changes suggested by Torsten Tejlmand Rasmussen v14: Update to picolibc 1.7 and newer (new stdin/stdout/stderr ABI) v15: Respond to comments from dcpleung: * switch kernel/errno to use CONFIG_LIBC_ERRNO instead of CONFIG_PICOLIBC * Add comment to test/lib/sprintf as to why the %n test was disabled for picolibc. v16: Switch picolibc to a module built with Zephyr. This eliminates toolchain dependencies and allows compiler settings for Zephyr to also be applied to picolibc. v17: Provide Zephyr-specific 'abort' implementation. Support systems with MMU v18: Allow use of toolchain picolibc version. v19: Use zephyr/ for zephyr headers v20: Add locking Use explicit commit for picolibc module v21: Create PICOLIBC_SUPPORTED config param. Set on arc, arm, arm64, mips and riscv architectures. Signed-off-by: Keith Packard <keithp@keithp.com>
2020-10-26 19:07:50 -07:00
default y
lib/libc: Mark picolibc as providing full C library support Select FULL_LIBC_SUPPORTED when picolibc is available. Add picolibc as a secondary default C library when REQUIRES_FULL_LIBC is selected. This is necessary as tests gated on FULL_LIBC_SUPPORTED need to be sure that a full C library will be selected -- if only picolibc is available, those tests will need to select that. This should permit use of a picolibc-only crosstool-ng toolchain in testing. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-04-17 09:54:36 -07:00
select FULL_LIBC_SUPPORTED
lib/libc: Add picolibc support (aarch32, aarch64 and RISC-V) [v21] Picolibc is a fork of newlib designed and tested on embedded systems. It offers a smaller memory footprint (both ROM and RAM), and native TLS support, which uses the Zephyr TLS support. By default, the full printf version is included in the executable, which includes exact floating point and long long input and output. A configuration option has been added to switch to the integer-only version (which also omits long long support). Here are some size comparisons using qemu-cortex-m3 and this application (parameters passed to printf to avoid GCC optimizing it into puts): void main(void) { printf("Hello World! %s %d\n", CONFIG_BOARD, 12); } FLASH SRAM minimal 8696 3952 picolibc int 7600 3960 picolibc float 12304 3960 newlib-nano int 11696 4128 newlib-nano float 30516 4496 newlib 34800 6112 --- v2: Include picolibc-tls.ld v3: Document usage in guides/c_library.rst and getting_started/toolchain_other_x_compilers.rst v4: Lost the lib/libc/picolibc directory somehow! v5: Add PICOLIBC_ALIGNED_HEAP_SIZE configuration option. Delete PICOLIBC_SEMIHOST option support code v6: Don't allocate static RAM for TLS values; TLS values only need to be allocated for each thread. v7: Use arm coprocessor for TLS pointer storage where supported for compatibility with the -mtp=cp15 compiler option (or when the target cpu type selects this option) Add a bunch of tests Round TLS segment up to stack alignment so that overall stack remains correctly aligned Add aarch64 support Rebase to upstream head v8: Share NEWLIB, NEWLIB_NANO and PICOLIBC library configuration variables in a single LIBC_PARTITIONS variable instead of having separate PICOLIBC_PART and NEWLIB_PART variables. v9: Update docs to reference pending sdk-ng support for picolibc v10: Support memory protection by creating a partition for picolibc shared data and any pre-defined picolibc heap. v11: Fix formatting in arch/arm/core/aarch64/switch.S v12: Remove TLS support from this patch now that TLS is upstream Require THREAD_LOCAL_STORAGE when using PICOLIBC for architectures that support it. v13: Merge errno changes as they're only needed for picolibc. Adapt cmake changes suggested by Torsten Tejlmand Rasmussen v14: Update to picolibc 1.7 and newer (new stdin/stdout/stderr ABI) v15: Respond to comments from dcpleung: * switch kernel/errno to use CONFIG_LIBC_ERRNO instead of CONFIG_PICOLIBC * Add comment to test/lib/sprintf as to why the %n test was disabled for picolibc. v16: Switch picolibc to a module built with Zephyr. This eliminates toolchain dependencies and allows compiler settings for Zephyr to also be applied to picolibc. v17: Provide Zephyr-specific 'abort' implementation. Support systems with MMU v18: Allow use of toolchain picolibc version. v19: Use zephyr/ for zephyr headers v20: Add locking Use explicit commit for picolibc module v21: Create PICOLIBC_SUPPORTED config param. Set on arc, arm, arm64, mips and riscv architectures. Signed-off-by: Keith Packard <keithp@keithp.com>
2020-10-26 19:07:50 -07:00
help
Selected when the target has support for picolibc.
toolchain: iar: Add experimental IAR support This adds experimental support for the IAR toolchain. Signed-off-by: Robin Kastberg <robin.kastberg@iar.com>
2025-02-05 21:24:48 +00:00
config IAR_LIBC_SUPPORTED
bool
default n
select FULL_LIBC_SUPPORTED
help
Selected if the target is an IAR Systems compiler
libC kconfig: Introduce a new option to avoid the native libC Let's introduce a new option so components which cannot be used with the native libC can select it. And at this point let's already have POSIX_API select it instead of being used in the libC choice default. Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
2024-03-27 14:13:47 +01:00
config NATIVE_LIBC_INCOMPATIBLE
bool
help
Other Kconfig options can select this, if they are not compatible with the
native/host libC, and should only be compiled with an embedded libC
lib/libc: Move helper symbols above C library menu Restructure the file so that the only elements within 'menu "C Library"' are the library choices. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-02-10 11:00:41 -08:00
menu "C Library"
libc: Added Kconfig choice to select C library Added Kconfig choice to select C library implementation Signed-off-by: Jan Van Winkel <jan.van_winkel@dxplore.eu>
2019-08-15 20:39:20 +02:00
choice LIBC_IMPLEMENTATION
prompt "C Library Implementation"
libC kconfig: Introduce a new option to avoid the native libC Let's introduce a new option so components which cannot be used with the native libC can select it. And at this point let's already have POSIX_API select it instead of being used in the libC choice default. Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
2024-03-27 14:13:47 +01:00
default EXTERNAL_LIBC if NATIVE_BUILD && !(NATIVE_LIBRARY && NATIVE_LIBC_INCOMPATIBLE)
libc: Default to picolibc where supported This switches the default C library to picolibc for all targets which support it. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-01-10 21:17:32 -08:00
default PICOLIBC
libc: Added Kconfig choice to select C library Added Kconfig choice to select C library implementation Signed-off-by: Jan Van Winkel <jan.van_winkel@dxplore.eu>
2019-08-15 20:39:20 +02:00
default NEWLIB_LIBC if REQUIRES_FULL_LIBC
default MINIMAL_LIBC
toolchain: iar: Add experimental IAR support This adds experimental support for the IAR toolchain. Signed-off-by: Robin Kastberg <robin.kastberg@iar.com>
2025-02-05 21:24:48 +00:00
default IAR_LIBC
libc: Added Kconfig choice to select C library Added Kconfig choice to select C library implementation Signed-off-by: Jan Van Winkel <jan.van_winkel@dxplore.eu>
2019-08-15 20:39:20 +02:00
config MINIMAL_LIBC
bool "Minimal C library"
libc: kconfig: Have MINIMAL_LIBC depend on !REQUIRES_FULL_LIBC This prevents MINIMAL_LIBC from being selected by the user (in the menuconfig or in a configuration file) when REQUIRES_FULL_LIBC is y. 'default' on a choice only determines the default selection, not what symbols can be selected. It's helpful to think of Kconfig in terms of someone going into the menuconfig and making changes. Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2019-11-01 17:10:50 +01:00
depends on !REQUIRES_FULL_LIBC
lib/libc: Replace SUPPORT_MINIMAL_LIBC with MINIMAL_LIBC_SUPPORTED Clean up libc-related symbols to use a common pattern. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-02-10 11:11:29 -08:00
depends on MINIMAL_LIBC_SUPPORTED
toolchain: Add COMPILER_FREESTANDING to control use of -ffreestanding Add an explicit compiler configuration, COMPILER_FREESTANDING, which controls whether the compiler should operate in freestanding or hosted mode (according to the C and C++ language specifications. This depends on having a C library which conforms with the language specification, and the minimal C library does not. Have the minimal C library select COMPILER_FREESTANDING to continue using freestanding mode with that library. For other C libraries, leave this disabled by default while allowing users to enable it if they want to go back to the previous configuration. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-02-08 14:56:50 -08:00
imply COMPILER_FREESTANDING
libc: Move abort into common Move the abort implementation into common so its shared among the libc. As part of this start using the common abort on newlib. Signed-off-by: Kumar Gala <kumar.gala@intel.com>
2023-05-05 10:26:45 -05:00
select COMMON_LIBC_ABORT
libc: Move strnlen into common Move the strnlen implementation into common so its available to any libc that may not implement strnlen. Signed-off-by: Kumar Gala <kumar.gala@intel.com>
2023-05-05 09:56:35 -05:00
select COMMON_LIBC_STRNLEN
libc: minimal: remove deprecated Kconfigs The following Kconfigs have been deprecated for more than 2 releases, remove them: - `CONFIG_SUPPORT_MINIMAL_LIBC` - `CONFIG_MINIMAL_LIBC_MALLOC` - `CONFIG_MINIMAL_LIBC_CALLOC` - `CONFIG_MINIMAL_LIBC_REALLOCARRAY` Signed-off-by: Yong Cong Sin <ycsin@meta.com>
2024-06-17 22:26:47 +08:00
imply COMMON_LIBC_MALLOC
imply COMMON_LIBC_CALLOC
imply COMMON_LIBC_REALLOCARRAY
libc: Added Kconfig choice to select C library Added Kconfig choice to select C library implementation Signed-off-by: Jan Van Winkel <jan.van_winkel@dxplore.eu>
2019-08-15 20:39:20 +02:00
help
Build with minimal C library.
libc: rework libc selection and reduce Kconfigs Moved all libc Kconfigs to where the code is and remove the default Kconfig for selecting the minimal libc. Minimal libc is now the default if nothing else is configured in. Removed the options for extended libc, this obviously was restricting features in the minimal libc without a good reason, most of the functions are available directly when using newlib, so there is no reason why we need to restrict those in minimal libc. Jira: ZEP-1440 Change-Id: If0a3adf4314e2ebdf0e139dee3eb4f47ce07aa89 Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2016-12-15 11:16:55 -05:00
lib/libc: Add picolibc support (aarch32, aarch64 and RISC-V) [v21] Picolibc is a fork of newlib designed and tested on embedded systems. It offers a smaller memory footprint (both ROM and RAM), and native TLS support, which uses the Zephyr TLS support. By default, the full printf version is included in the executable, which includes exact floating point and long long input and output. A configuration option has been added to switch to the integer-only version (which also omits long long support). Here are some size comparisons using qemu-cortex-m3 and this application (parameters passed to printf to avoid GCC optimizing it into puts): void main(void) { printf("Hello World! %s %d\n", CONFIG_BOARD, 12); } FLASH SRAM minimal 8696 3952 picolibc int 7600 3960 picolibc float 12304 3960 newlib-nano int 11696 4128 newlib-nano float 30516 4496 newlib 34800 6112 --- v2: Include picolibc-tls.ld v3: Document usage in guides/c_library.rst and getting_started/toolchain_other_x_compilers.rst v4: Lost the lib/libc/picolibc directory somehow! v5: Add PICOLIBC_ALIGNED_HEAP_SIZE configuration option. Delete PICOLIBC_SEMIHOST option support code v6: Don't allocate static RAM for TLS values; TLS values only need to be allocated for each thread. v7: Use arm coprocessor for TLS pointer storage where supported for compatibility with the -mtp=cp15 compiler option (or when the target cpu type selects this option) Add a bunch of tests Round TLS segment up to stack alignment so that overall stack remains correctly aligned Add aarch64 support Rebase to upstream head v8: Share NEWLIB, NEWLIB_NANO and PICOLIBC library configuration variables in a single LIBC_PARTITIONS variable instead of having separate PICOLIBC_PART and NEWLIB_PART variables. v9: Update docs to reference pending sdk-ng support for picolibc v10: Support memory protection by creating a partition for picolibc shared data and any pre-defined picolibc heap. v11: Fix formatting in arch/arm/core/aarch64/switch.S v12: Remove TLS support from this patch now that TLS is upstream Require THREAD_LOCAL_STORAGE when using PICOLIBC for architectures that support it. v13: Merge errno changes as they're only needed for picolibc. Adapt cmake changes suggested by Torsten Tejlmand Rasmussen v14: Update to picolibc 1.7 and newer (new stdin/stdout/stderr ABI) v15: Respond to comments from dcpleung: * switch kernel/errno to use CONFIG_LIBC_ERRNO instead of CONFIG_PICOLIBC * Add comment to test/lib/sprintf as to why the %n test was disabled for picolibc. v16: Switch picolibc to a module built with Zephyr. This eliminates toolchain dependencies and allows compiler settings for Zephyr to also be applied to picolibc. v17: Provide Zephyr-specific 'abort' implementation. Support systems with MMU v18: Allow use of toolchain picolibc version. v19: Use zephyr/ for zephyr headers v20: Add locking Use explicit commit for picolibc module v21: Create PICOLIBC_SUPPORTED config param. Set on arc, arm, arm64, mips and riscv architectures. Signed-off-by: Keith Packard <keithp@keithp.com>
2020-10-26 19:07:50 -07:00
config PICOLIBC
bool "Picolibc library"
libc: Move abort into common Move the abort implementation into common so its shared among the libc. As part of this start using the common abort on newlib. Signed-off-by: Kumar Gala <kumar.gala@intel.com>
2023-05-05 10:26:45 -05:00
select COMMON_LIBC_ABORT
libc/picolibc: Don't force TLS when using picolibc module The picolibc module can be built without thread local storage support if desired. Allow that by using 'imply' instead of 'select'. However, when using the toolchain picolibc, we assume that TLS will be enabled wherever supported, so make sure we match by adding a 'select' for this case. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-09-05 14:19:07 -07:00
imply THREAD_LOCAL_STORAGE if ARCH_HAS_THREAD_LOCAL_STORAGE && TOOLCHAIN_SUPPORTS_THREAD_LOCAL_STORAGE
libc/picolibc: When !TLS, use zephyr errno For targets without thread local storage, we need to use the builtin per-thread errno support provided by Zephyr as the multi-thread errno support provided in picolibc relies on TLS. Signed-off-by: Keith Packard <keithp@keithp.com>
2022-06-22 12:30:37 -07:00
select LIBC_ERRNO if THREAD_LOCAL_STORAGE
libc: Control Z_LIBC_PARTITION_EXISTS from Kconfig Instead of adding every possible subsystem which places variables in the C library memory partition in libc-hooks.h, place those conditions in the related Kconfig files and simplify the libc-hooks.h to just looking at CONFIG_NEED_LIBC_MEM_PARTITION. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-10-04 09:17:27 -07:00
select NEED_LIBC_MEM_PARTITION
libc/picolibc: Don't replace picolibc time _r functions Select TC_PROVIDES_POSIX_C_LANG_SUPPORT_R to keep Zephyr from including the common libc implementation of the various _r APIs. Signed-off-by: Keith Packard <keithp@keithp.com>
2024-09-13 16:34:24 -07:00
select TC_PROVIDES_POSIX_C_LANG_SUPPORT_R
libc/picolibc: Switch to common malloc implementation Enable the common malloc implementation when using picolibc. Support existing Picolibc configurations by respecting existing PICOLIBC_HEAP_SIZE settings. When PICOLIBC_HEAP_SIZE is set to a value other than -2, then *always* set COMMON_LIBC_MALLOC_ARENA_SIZE to that value. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-03-29 11:33:08 -07:00
imply COMMON_LIBC_MALLOC
picolibc: Use common abort(), call from assert when !__ASSERT_ON Switch to the common abort implementation so that we can use it from the assert hooks to avoid undefined behavior. Closes: 84824 Signed-off-by: Keith Packard <keithp@keithp.com>
2025-01-28 08:13:53 -08:00
imply COMMON_LIBC_ABORT
libc/picolibc: Clean up Picolibc Kconfig for C++ libstdc++ is supported with Picolibc only when the toolchain version of Picolibc is use -- libstdc++ must be built using a specific Picolibc build and libstdc++ is included with the toolchain. Ideally, we'd allow the use of the Picolibc module whenever we weren't using the GNU libstdc++, including when using the minimal libc++. However, the obvious dependency settings create a loop: config PICOLIBC depends on PICOLIBC_SUPPORTED config PICOLIBC_SUPPORTED depends on !(GLIBCXX_LIBCPP && "$(ZEPHYR_TOOCHAIN_VARIANT" = "zephyr") config GLIBCXX_LIBCPP depends on NEWLIB_LIBC || PICOLIBC To break this loop, we replace GLIBCXX_LIBCPP in the second block with CPP: config PICOLIBC_SUPPORTED depends on !(CPP && "$(ZEPHYR_TOOCHAIN_VARIANT" = "zephyr") This means that picolibc cannot be used with any C++ apps when using the Zephyr SDK, even when not using the GNU libstdc++. However, Zephyr SDK 0.16 will come with an additional Kconfig file that includes: config PICOLIBC_SUPPORTED def_bool y depends on "$(ZEPHYR_TOOLCHAIN_VARIANT)" = "zephyr" This will override the Kconfig bits included in Zephyr and allow use of the Picolibc module with C++ code, including using the minimal libc++ bits. Signed-off-by: Keith Packard <keithp@keithp.com>
2022-11-02 13:11:41 -07:00
depends on PICOLIBC_SUPPORTED
lib/libc: Add picolibc support (aarch32, aarch64 and RISC-V) [v21] Picolibc is a fork of newlib designed and tested on embedded systems. It offers a smaller memory footprint (both ROM and RAM), and native TLS support, which uses the Zephyr TLS support. By default, the full printf version is included in the executable, which includes exact floating point and long long input and output. A configuration option has been added to switch to the integer-only version (which also omits long long support). Here are some size comparisons using qemu-cortex-m3 and this application (parameters passed to printf to avoid GCC optimizing it into puts): void main(void) { printf("Hello World! %s %d\n", CONFIG_BOARD, 12); } FLASH SRAM minimal 8696 3952 picolibc int 7600 3960 picolibc float 12304 3960 newlib-nano int 11696 4128 newlib-nano float 30516 4496 newlib 34800 6112 --- v2: Include picolibc-tls.ld v3: Document usage in guides/c_library.rst and getting_started/toolchain_other_x_compilers.rst v4: Lost the lib/libc/picolibc directory somehow! v5: Add PICOLIBC_ALIGNED_HEAP_SIZE configuration option. Delete PICOLIBC_SEMIHOST option support code v6: Don't allocate static RAM for TLS values; TLS values only need to be allocated for each thread. v7: Use arm coprocessor for TLS pointer storage where supported for compatibility with the -mtp=cp15 compiler option (or when the target cpu type selects this option) Add a bunch of tests Round TLS segment up to stack alignment so that overall stack remains correctly aligned Add aarch64 support Rebase to upstream head v8: Share NEWLIB, NEWLIB_NANO and PICOLIBC library configuration variables in a single LIBC_PARTITIONS variable instead of having separate PICOLIBC_PART and NEWLIB_PART variables. v9: Update docs to reference pending sdk-ng support for picolibc v10: Support memory protection by creating a partition for picolibc shared data and any pre-defined picolibc heap. v11: Fix formatting in arch/arm/core/aarch64/switch.S v12: Remove TLS support from this patch now that TLS is upstream Require THREAD_LOCAL_STORAGE when using PICOLIBC for architectures that support it. v13: Merge errno changes as they're only needed for picolibc. Adapt cmake changes suggested by Torsten Tejlmand Rasmussen v14: Update to picolibc 1.7 and newer (new stdin/stdout/stderr ABI) v15: Respond to comments from dcpleung: * switch kernel/errno to use CONFIG_LIBC_ERRNO instead of CONFIG_PICOLIBC * Add comment to test/lib/sprintf as to why the %n test was disabled for picolibc. v16: Switch picolibc to a module built with Zephyr. This eliminates toolchain dependencies and allows compiler settings for Zephyr to also be applied to picolibc. v17: Provide Zephyr-specific 'abort' implementation. Support systems with MMU v18: Allow use of toolchain picolibc version. v19: Use zephyr/ for zephyr headers v20: Add locking Use explicit commit for picolibc module v21: Create PICOLIBC_SUPPORTED config param. Set on arc, arm, arm64, mips and riscv architectures. Signed-off-by: Keith Packard <keithp@keithp.com>
2020-10-26 19:07:50 -07:00
help
Build with picolibc library. The picolibc library is built as
a module if PICOLIBC_MODULE is set, otherwise picolibc is
expected to be provided by the toolchain.
libc: rework libc selection and reduce Kconfigs Moved all libc Kconfigs to where the code is and remove the default Kconfig for selecting the minimal libc. Minimal libc is now the default if nothing else is configured in. Removed the options for extended libc, this obviously was restricting features in the minimal libc without a good reason, most of the functions are available directly when using newlib, so there is no reason why we need to restrict those in minimal libc. Jira: ZEP-1440 Change-Id: If0a3adf4314e2ebdf0e139dee3eb4f47ce07aa89 Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2016-12-15 11:16:55 -05:00
config NEWLIB_LIBC
libc: Added Kconfig choice to select C library Added Kconfig choice to select C library implementation Signed-off-by: Jan Van Winkel <jan.van_winkel@dxplore.eu>
2019-08-15 20:39:20 +02:00
bool "Newlib C library"
libc: Move abort into common Move the abort implementation into common so its shared among the libc. As part of this start using the common abort on newlib. Signed-off-by: Kumar Gala <kumar.gala@intel.com>
2023-05-05 10:26:45 -05:00
select COMMON_LIBC_ABORT
lib/libc: newlib use depends upon newlib being supported Before allowing newlib to be selected as the C library, ensure that it is available for the target. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-02-08 13:52:40 -08:00
depends on NEWLIB_LIBC_SUPPORTED
libc: Control Z_LIBC_PARTITION_EXISTS from Kconfig Instead of adding every possible subsystem which places variables in the C library memory partition in libc-hooks.h, place those conditions in the related Kconfig files and simplify the libc-hooks.h to just looking at CONFIG_NEED_LIBC_MEM_PARTITION. Signed-off-by: Keith Packard <keithp@keithp.com>
2023-10-04 09:17:27 -07:00
select NEED_LIBC_MEM_PARTITION
lib: libc: newlib: Don't replace newlib libc time _r functions Select TC_PROVIDES_POSIX_C_LANG_SUPPORT_R to keep Zephyr from including the common libc implementation of the various _r APIs. Signed-off-by: Fin Maaß <f.maass@vogl-electronic.com>
2024-12-09 15:36:20 +01:00
select TC_PROVIDES_POSIX_C_LANG_SUPPORT_R
posix: deprecate POSIX_MAX_FDS and add POSIX_DEVICE_IO The POSIX_MAX_FDS option does not correspond to any standard POSIX option. It was used to define the size of the file descriptor table, which is by no means exclusively used by POSIX (also net, fs, ...). POSIX_MAX_FDS is being deprecated in order to ensure that Zephyr's POSIX Kconfig variables correspond to those defined in the specification, as of IEEE 1003.1-2017. Namely, POSIX_OPEN_MAX. CONFIG_POSIX_MAX_OPEN_FILES is being deprecated for the same reason. To mitigate any possible layering violations, that option is not user selectable. It tracks the newly added CONFIG_ZVFS_OPEN_MAX option, which is native to Zephyr. With this deprecation, we introduce the following Kconfig options that map directly to standard POSIX Option Groups by simply removing "CONFIG_": * CONFIG_POSIX_DEVICE_IO Similarly, with this deprecation, we introduce the following Kconfig options that map directly to standard POSIX Options by simply removing "CONFIG": * CONFIG_POSIX_OPEN_MAX In order to maintain parity with the current feature set, we introduce the following Kconfig options. * CONFIG_POSIX_DEVICE_IO_ALIAS_CLOSE * CONFIG_POSIX_DEVICE_IO_ALIAS_OPEN * CONFIG_POSIX_DEVICE_IO_ALIAS_READ * CONFIG_POSIX_DEVICE_IO_ALIAS_WRITE Gate open(), close(), read(), and write() via the CONFIG_POSIX_DEVICE_IO Kconfig option and move implementations into device_io.c, to be conformant with the spec. Lastly, stage function names for upcoming ZVFS work, to be completed as part of the LTSv3 Roadmap (e.g. zvfs_open(), ..). Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>
2024-05-21 22:45:15 -04:00
imply POSIX_DEVICE_IO_ALIAS_CLOSE
imply POSIX_DEVICE_IO_ALIAS_OPEN
imply POSIX_DEVICE_IO_ALIAS_READ
imply POSIX_DEVICE_IO_ALIAS_WRITE
posix: fd_mgmt: add fd_mgmt option group With this change, we collect implementations of functions that are part of the POSIX_FD_MGMT Option Group into one compilation unit (fd_mgmt.c) and provide a matching Kconfig symbol that is reflective of the standard. Additionally, provide Kconfig options for aliases of those functions since Newlib-based toolchains internally use an underscore-prefixed alias for many POSIX functions (in this case _lseek). Prefix Zephyr-native implementations with zvfs_ to prepare for the up-coming changes in that area. Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>
2024-05-22 16:35:57 -04:00
imply POSIX_FD_MGMT_ALIAS_LSEEK
posix: deprecate POSIX_FS for POSIX_FILE_SYSTEM This change deprecates CONFIG_POSIX_FS in favour of CONFIG_POSIX_FILE_SYSTEM, which maps directly to the name of the standard POSIX Option Group. Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>
2024-05-22 19:56:11 -04:00
imply POSIX_FILE_SYSTEM_ALIAS_FSTAT
posix: move getpid() to Kconfig.procN and doc MULTI_PROCESS Create a Kconfig option for POSIX_MULTI_PROCESS Option Group and mark it as experimental. Currently, Zephyr has two functions that belong to this Option Group: - sleep() - getpid() Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>
2024-05-23 13:51:14 -04:00
imply POSIX_MULTI_PROCESS_ALIAS_GETPID
posix: add stubs for signal.h functions that need process support Since Zephyr itself does not currently support processes, but conformant applications should still be able to link, add stubs for the remaining POSIX functions in the POSIX_SIGNALS Option Group. The POSIX_SIGNALS Option Group is required for PSE51, PSE52, PSE53, PSE54, and likely many other POSIX Subprofiles. Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>
2024-06-17 13:01:06 -04:00
imply POSIX_SIGNALS_ALIAS_KILL
libc: rework libc selection and reduce Kconfigs Moved all libc Kconfigs to where the code is and remove the default Kconfig for selecting the minimal libc. Minimal libc is now the default if nothing else is configured in. Removed the options for extended libc, this obviously was restricting features in the minimal libc without a good reason, most of the functions are available directly when using newlib, so there is no reason why we need to restrict those in minimal libc. Jira: ZEP-1440 Change-Id: If0a3adf4314e2ebdf0e139dee3eb4f47ce07aa89 Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2016-12-15 11:16:55 -05:00
help
kconfig: fix help syntax and add spaces Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2017-12-13 10:08:21 -05:00
Build with newlib library. The newlib library is expected to be
part of the SDK in this case.
libc: rework libc selection and reduce Kconfigs Moved all libc Kconfigs to where the code is and remove the default Kconfig for selecting the minimal libc. Minimal libc is now the default if nothing else is configured in. Removed the options for extended libc, this obviously was restricting features in the minimal libc without a good reason, most of the functions are available directly when using newlib, so there is no reason why we need to restrict those in minimal libc. Jira: ZEP-1440 Change-Id: If0a3adf4314e2ebdf0e139dee3eb4f47ce07aa89 Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2016-12-15 11:16:55 -05:00
ARC: LIB: add ARC MWDT libc support ARC MWDT toolchain doesn't provide newlib, let's add support of ARC MWDT libc to Zephyr Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Evgeniy Paltsev <PaltsevEvgeniy@gmail.com>
2021-06-03 19:55:08 +03:00
config ARCMWDT_LIBC
bool "ARC MWDT C library"
depends on !NATIVE_APPLICATION
depends on "$(ZEPHYR_TOOLCHAIN_VARIANT)" = "arcmwdt"
help
C library provided by ARC MWDT toolchain.
libc: Added Kconfig choice to select C library Added Kconfig choice to select C library implementation Signed-off-by: Jan Van Winkel <jan.van_winkel@dxplore.eu>
2019-08-15 20:39:20 +02:00
config EXTERNAL_LIBC
bool "External C library"
help
Build with external/user provided C library.
toolchain: iar: Add experimental IAR support This adds experimental support for the IAR toolchain. Signed-off-by: Robin Kastberg <robin.kastberg@iar.com>
2025-02-05 21:24:48 +00:00
config IAR_LIBC
bool "IAR C Runtime Library"
depends on IAR_LIBC_SUPPORTED
depends on "$(ZEPHYR_TOOLCHAIN_VARIANT)" = "iar"
select COMMON_LIBC_STRNLEN
select COMMON_LIBC_TIME if POSIX_TIMERS
help
Use the full IAR Compiler runtime libraries.
A reduced Zephyr minimal libc will be used for library functionality
not provided by the IAR C Runtime Library.
kconfig: Change some '#Comment' comments to '# Comment' For consistency. Newly-introduced stuff. Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2019-11-01 16:22:49 +01:00
endchoice # LIBC_IMPLEMENTATION
libc: Added Kconfig choice to select C library Added Kconfig choice to select C library implementation Signed-off-by: Jan Van Winkel <jan.van_winkel@dxplore.eu>
2019-08-15 20:39:20 +02:00
toolchain: Have Kconfig NEWLIB_LIBC_NANO depend on toolchain support Introduce HAS_NEWLIB_LIBC_NANO Kconfig option that the toolchain specific Kconfig (gnuarmemb & zephyr 0.11) can select to convey that the feature is supported. This removes the need to if protect the NEWLIB_LIBC_NANO Kconfig with: if "$(ZEPHYR_TOOLCHAIN_VARIANT)" = "gnuarmemb" Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2020-01-28 09:58:56 -06:00
config HAS_NEWLIB_LIBC_NANO
bool
libc: share time() between minimal libc and armclang libc Introduce a place to share implementations of libc functions that are needed by different libc versions. Place time() in this common location so it can be shared when building for either minimal libc or armclang libc. Signed-off-by: Kumar Gala <kumar.gala@intel.com>
2023-03-24 19:10:50 +00:00
rsource "common/Kconfig"
lib: libc: Move minimal libc configs to lib/libc/minimal/Kconfig This commit relocates the minimal libc configurations under the top- level libc Kconfig to a new Kconfig under `lib/libc/minimal` for improved organisation of the libc configurations. Signed-off-by: Stephanos Ioannidis <stephanos.ioannidis@nordicsemi.no>
2022-12-07 18:18:37 +09:00
rsource "minimal/Kconfig"
lib: libc: Move newlib libc configs to lib/libc/newlib/Kconfig This commit relocates the newlib libc configurations under the top- level libc Kconfig to a new Kconfig under `lib/libc/newlib` for improved organisation of the libc configurations. Signed-off-by: Stephanos Ioannidis <stephanos.ioannidis@nordicsemi.no>
2022-12-07 18:22:19 +09:00
rsource "newlib/Kconfig"
lib: libc: picolibc: Clean up Kconfig configurations This commit updates the Picolibc configurations to remove any unnecessary defaults and dependencies and conform to the de-facto standard convention across the Zephyr repository. Signed-off-by: Stephanos Ioannidis <stephanos.ioannidis@nordicsemi.no>
2022-12-07 18:34:15 +09:00
rsource "picolibc/Kconfig"
libc: Added Kconfig choice to select C library Added Kconfig choice to select C library implementation Signed-off-by: Jan Van Winkel <jan.van_winkel@dxplore.eu>
2019-08-15 20:39:20 +02:00
config STDOUT_CONSOLE
bool "Send stdout to console"
depends on CONSOLE_HAS_DRIVER
libC: STDOUT_CONSOLE narrow filtering by type of native build It is possible to build with STDOUT_CONSOLE with the embedded C libraries with the POSIX arch. Narrow down the filtering accordingly. Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
2023-06-09 14:28:01 +02:00
depends on !(NATIVE_APPLICATION || (NATIVE_LIBRARY && EXTERNAL_LIBC))
libc: Added Kconfig choice to select C library Added Kconfig choice to select C library implementation Signed-off-by: Jan Van Winkel <jan.van_winkel@dxplore.eu>
2019-08-15 20:39:20 +02:00
default y
help
This option directs standard output (e.g. printf) to the console
device, rather than suppressing it entirely. See also EARLY_CONSOLE
option.
libc: add hidden option CONFIG_NEED_LIBC_MEM_PARTITION The z_libc_partition was only enabled when newlib is being used, and/or stack canaries are needed. This adds a hidden option where this partition can be enabled if needed, regardless of whether newlib is used or stack canaries are needed. Signed-off-by: Daniel Leung <daniel.leung@intel.com>
2020-10-01 14:49:30 -07:00
config NEED_LIBC_MEM_PARTITION
bool
help
Hidden option to signal that a memory partition is needed for
everywhere: fix typos Fix a lot of typos Signed-off-by: Nazar Kazakov <nazar.kazakov.work@gmail.com>
2022-02-24 12:00:55 +00:00
the C library even though it would not have been enabled
libc: add hidden option CONFIG_NEED_LIBC_MEM_PARTITION The z_libc_partition was only enabled when newlib is being used, and/or stack canaries are needed. This adds a hidden option where this partition can be enabled if needed, regardless of whether newlib is used or stack canaries are needed. Signed-off-by: Daniel Leung <daniel.leung@intel.com>
2020-10-01 14:49:30 -07:00
otherwise.
libc: rework libc selection and reduce Kconfigs Moved all libc Kconfigs to where the code is and remove the default Kconfig for selecting the minimal libc. Minimal libc is now the default if nothing else is configured in. Removed the options for extended libc, this obviously was restricting features in the minimal libc without a good reason, most of the functions are available directly when using newlib, so there is no reason why we need to restrict those in minimal libc. Jira: ZEP-1440 Change-Id: If0a3adf4314e2ebdf0e139dee3eb4f47ce07aa89 Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2016-12-15 11:16:55 -05:00
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