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https://github.com/crosstool-ng/crosstool-ng.git
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240 lines
6.4 KiB
Plaintext
240 lines
6.4 KiB
Plaintext
# 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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default 3 if LIBC_UCLIBC_DEBUG_LEVEL_3
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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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