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238 lines
6.3 KiB
238 lines
6.3 KiB
# uClibc options |
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## depends on ! WINDOWS && ! BARE_METAL |
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## |
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## select LIBC_SUPPORT_THREADS_LT |
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## select LIBC_SUPPORT_THREADS_NONE |
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## select LIBC_SUPPORT_THREADS_NATIVE if UCLIBC_0_9_33_2_or_later |
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## select CC_CORE_PASSES_NEEDED |
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## |
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## help The de-facto standard for embeded linux systems. |
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## help |
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## help Highly configurable, thus as feature-rich as you |
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## help need, without compromising for size. |
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config THREADS |
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default "nptl" if THREADS_NATIVE |
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default "linuxthreads" if THREADS_LT |
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if ARCH_FLOAT_SOFTFP |
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comment "'softfp' ABI and uClibc is not entirely tested in crosstool-NG" |
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comment "You may experience issues, although it should work just fine" |
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endif # ARCH_FLOAT_SOFTFP |
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config LIBC_UCLIBC_HAS_SUNRPC |
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bool |
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default y if !UCLIBC_1_0_23_or_later |
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config LIBC_UCLIBC_HAS_LIBICONV |
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bool |
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default y if UCLIBC_1_0_21_or_later |
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config LIBC_UCLIBC_PARALLEL |
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def_bool y |
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depends on UCLIBC_0_9_33_2_or_later |
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config LIBC_UCLIBC_NG |
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def_bool y |
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depends on UCLIBC_1_0_0_or_later |
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# uClibc-ng 1.0.15 did away with 2 implementations of linuxthreads |
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config UCLIBC_MERGED_LINUXTHREADS |
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def_bool y |
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depends on UCLIBC_1_0_15_or_later |
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choice |
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bool |
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prompt "uClibc verbosity:" |
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default LIBC_UCLIBC_VERBOSITY_0 |
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config LIBC_UCLIBC_VERBOSITY_0 |
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bool |
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prompt "Quiet build" |
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help |
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Print terse command indications. |
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config LIBC_UCLIBC_VERBOSITY_1 |
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bool |
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prompt "Brief build (show defines, ld flags)" |
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help |
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Print simplified command lines. |
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config LIBC_UCLIBC_VERBOSITY_2 |
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bool |
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prompt "Very verbose build" |
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help |
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Print full command lines. |
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endchoice |
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# uClibc-ng has reverted the meaning of V=1 and V=2 compared to its |
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# ancestor, uClibc, in order to match kernel's Kbuild settings. |
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# Hence, for uClibc-ng supply V=2 if "brief build" is selected, |
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# and so forth. |
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config LIBC_UCLIBC_VERBOSITY |
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string |
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default "" if LIBC_UCLIBC_VERBOSITY_0 |
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default "V=2" if LIBC_UCLIBC_VERBOSITY_1 && LIBC_UCLIBC_NG |
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default "V=1" if LIBC_UCLIBC_VERBOSITY_1 |
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default "V=1" if LIBC_UCLIBC_VERBOSITY_2 && LIBC_UCLIBC_NG |
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default "V=2" if LIBC_UCLIBC_VERBOSITY_2 |
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choice |
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bool |
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prompt "Debug level" |
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default LIBC_UCLIBC_DEBUG_LEVEL_0 |
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config LIBC_UCLIBC_DEBUG_LEVEL_0 |
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bool |
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prompt "none" |
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config LIBC_UCLIBC_DEBUG_LEVEL_1 |
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bool |
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prompt "minimal" |
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config LIBC_UCLIBC_DEBUG_LEVEL_2 |
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bool |
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prompt "normal" |
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config LIBC_UCLIBC_DEBUG_LEVEL_3 |
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bool |
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prompt "all" |
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endchoice |
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config LIBC_UCLIBC_DEBUG_LEVEL |
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int |
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default 0 if LIBC_UCLIBC_DEBUG_LEVEL_0 |
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default 1 if LIBC_UCLIBC_DEBUG_LEVEL_1 |
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default 2 if LIBC_UCLIBC_DEBUG_LEVEL_2 |
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config LIBC_UCLIBC_CONFIG_FILE |
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string |
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prompt "Configuration file" |
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default "" |
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help |
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Path to the configuration file. |
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If the file is not provided, we fall back to a default config file. |
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if THREADS_LT && !UCLIBC_MERGED_LINUXTHREADS |
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choice |
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bool |
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prompt "Linuxthread implementation: " |
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default LIBC_UCLIBC_LNXTHRD_OLD |
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config LIBC_UCLIBC_LNXTHRD_OLD |
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bool |
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prompt "old/stable" |
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help |
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From the uClibc config option help: |
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There are two versions of linuxthreads. The older (stable) version |
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has been in uClibc for quite a long time but hasn't seen too many |
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updates other than bugfixes. |
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config LIBC_UCLIBC_LNXTHRD_NEW |
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bool |
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prompt "new" |
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help |
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From the uClibc config option help: |
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The new version has not been tested much, and lacks ports for arches |
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which glibc does not support (like frv, etc...), but is based on |
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the latest code from glibc, so it may be the only choice for the |
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newer ports (like alpha/amd64/64bit arches and hppa). |
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endchoice |
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endif # THREADS_LT |
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config LIBC_UCLIBC_LNXTHRD |
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string |
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default "" if THREADS_NONE |
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default "" if THREADS_NATIVE |
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default "" if UCLIBC_MERGED_LINUXTHREADS |
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default "old" if LIBC_UCLIBC_LNXTHRD_OLD |
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default "new" if LIBC_UCLIBC_LNXTHRD_NEW |
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config LIBC_UCLIBC_LOCALES |
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bool |
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select LIBC_UCLIBC_WCHAR |
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# Before it became a separate option, libiconv depended on locales |
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prompt "Add support for locales" |
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help |
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Say y if you want uClibc to support localisation. |
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Note that seems to be broken on recent uClibc releases. |
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config LIBC_UCLIBC_LIBICONV |
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bool "Enable iconv" |
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depends on LIBC_UCLIBC_HAS_LIBICONV |
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help |
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Say y if you want to enable <iconv.h> and the corresponding interfaces. |
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config LIBC_UCLIBC_IPV6 |
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bool |
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prompt "Add support for IPv6" |
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help |
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Say y if you want uClibc to support IPv6. |
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config LIBC_UCLIBC_WCHAR |
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bool |
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prompt "Add support for WCHAR" |
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help |
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Say y if you want uClibc to support WCHAR. |
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Maybe this is needed, if you're building a C++-Compiler |
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config LIBC_UCLIBC_FENV |
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bool |
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prompt "Add support for fenv.h" |
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default y if ARCH_X86 |
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help |
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fenv.h provides functions to control the floating point environment, |
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such as rounding mode, exceptions... |
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For some architectures, fenv.h is incomplete, so is not installed |
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by default. x86 is known to have a rather complete fenv.h, so it is |
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installed by default only for x86. |
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If you need fenv.h on other architectures, say 'y' here, but you may |
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encounter some issues. |
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config LIBC_UCLIBC_RPC |
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bool |
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prompt "Add support for RPC" |
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depends on LIBC_UCLIBC_HAS_SUNRPC |
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help |
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Enable support for remote procedure calls (RPC) in uClibc. |
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config LIBC_UCLIBC_HAS_SSP |
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bool |
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prompt "Support stack smashing protection (SSP)" |
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default y |
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help |
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Enable support for building programs with -fstack-protector family |
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of options. If this option is disabled, one can also use a standalone |
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libssp library from GCC. |
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config LIBC_UCLIBC_BUILD_SSP |
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bool |
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prompt "Build uClibc with SSP" |
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depends on LIBC_UCLIBC_HAS_SSP |
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help |
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Build uClibc with -fstack-protector. This adds runtime overhead |
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to many function calls and is disabled by default. |
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if ARCH_ARM |
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config LIBC_UCLIBC_USE_GNU_SUFFIX |
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bool |
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default y |
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prompt "Use -uclibcgnueabi suffix" |
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help |
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Depending on where the resulting toolchain will be used, you may need |
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to tweak the "system" part of the target tuple. Buildroot prefers |
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to have arm-*-linux-uclibcgnueabi; OpenEmbedded prefers |
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arm-*-linux-uclibceabi. Other tools seem to either accept both, or |
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don't care about the suffix. |
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endif
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