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b296cfb986
gold can not build glibc/eglibc, force use of the BFD linker during the toolchain build. Reported-by: Bill Pringlemeir <bpringle@sympatico.ca> Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
255 lines
8.3 KiB
Plaintext
255 lines
8.3 KiB
Plaintext
# This file contains the common configuration options
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# that apply to both glibc and eglibc.
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if LIBC_glibc || LIBC_eglibc
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# Force using the BFD linker during the toolchain build
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config LIBC_glibc_familly
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bool
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default y
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select BINUTILS_FORCE_LD_BFD
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# Some architectures require the ports addon. List them one by one here:
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# This list must be carefully in sync with the architectures names
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# we can find in config/arch/*
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config ARCH_arm
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select LIBC_GLIBC_USE_PORTS
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config ARCH_mips
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select LIBC_GLIBC_USE_PORTS
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# End of arch-specific ports auto-select
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comment "glibc/eglibc common options"
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config LIBC_GLIBC_EXTRA_CONFIG
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string
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prompt "extra config"
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default ""
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help
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Extra flags to pass onto ./configure when configuring.
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Eg.: --enable-static-nss
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config LIBC_GLIBC_CONFIGPARMS
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string
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prompt "Extra config params (READ HELP)"
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default "" if ! ARCH_sh
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default "no-z-defs=yes" if ARCH_sh
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help
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Some architectures need to set options in the file configparms.
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This is the case for sh3/4, which really need to set configparms
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to "no-z-defs=yes" as of gcc-3.4/glibc-2.3.2.
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Unless you are building a toolchain for sh3/4, you should leave that empty.
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Note: If you need to pass more than one value, separate them with
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'\n'. Eg.: var1=val1\nvar2=val2
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config LIBC_GLIBC_EXTRA_CFLAGS
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string
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prompt "extra target CFLAGS"
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default ""
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help
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Extra target CFLAGS to use when building.
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config LIBC_EXTRA_CC_ARGS
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string
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prompt "gcc extra flags"
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default ""
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help
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Extra flags to pass gcc when building.
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Seldom used, except for sparc64 which seems to need the flag -64
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to be passed onto gcc.
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config LIBC_ENABLE_FORTIFIED_BUILD
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bool
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prompt "Enable fortified build (EXPERIMENTAL)"
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depends on EXPERIMENTAL
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default n
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help
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If you say 'y' here, then glibc will be using fortified versions
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of functions with format arguments (eg. vsyslog, printf...), and
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do a sanity check on the format at runtime, to avoid some of the
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common format string attacks.
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This is currently not supported, and will most probably result in
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a broken build, with an error message like:
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../misc/syslog.c: In function '__vsyslog_chk':
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../misc/syslog.c:123: sorry, unimplemented: inlining failed in
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call to 'syslog': function body not available
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If you are brave enough and want to debug the issue, then say 'y'
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here. Otherwise, be still and say 'n' (the default). ;-)
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config LIBC_DISABLE_VERSIONING
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bool
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prompt "Disable symbols versioning"
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default n
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help
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Do not include versioning information in the library objects.
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config LIBC_OLDEST_ABI
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string
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prompt "Oldest supported ABI"
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default ""
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help
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Set the oldest ABI supported by the C library.
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Setting this option, for example, to 2.2 will provide ABI support
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back to (e)glibc-2.2.
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If this option is not set, (e)glibc will choose for you.
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config LIBC_GLIBC_FORCE_UNWIND
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bool
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prompt "Force unwind support (READ HELP!)"
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default n
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help
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If your toolchain fails building while building the C library
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start files, or the complete C library, with a message like:
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configure: error: forced unwind support is required
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then you may try setting this to 'y'. Otherwise, leave it to 'n'.
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The issue seems to be related to building NPTL on old versions
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of glibc (and possibly eglibc as well) on some architectures
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(seen on s390, s390x and x86_64).
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config LIBC_GLIBC_USE_PORTS
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bool
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prompt "Use the ports addon"
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default n
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help
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The ports addon contains some architecture ports that are not available
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in the official distribution.
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For example, this is the case for ARM with glibc-2.4 and above.
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Say n only if you're sure that your architecture is in the official
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distribution for your chosen version.
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config LIBC_ADDONS_LIST
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string
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prompt "Extra addons"
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default ""
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help
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Extra addons to include. Space separated list.
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You need to specify neither linuxthreads nor nptl, as they are added
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automagically for you depending on the threading model you choosed
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earlier.
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Eg.: crypt (for very old libces)
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if LIBC_GLIBC_USE_PORTS || ( LIBC_ADDONS_LIST != "" )
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comment "WARNING !!! "
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comment "| For glibc >= 2.8, it can happen that the tarballs "
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comment "| for the addons are not available for download. "
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comment "| If that happens, bad luck... Try a previous version "
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comment "| or try again later... :-( "
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endif
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if KERNEL_linux
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choice
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bool
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prompt "Minimum supported kernel version"
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default LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS
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config LIBC_GLIBC_KERNEL_VERSION_NONE
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bool
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prompt "Let ./configure decide"
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help
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Let ./configure decide what minimum kernel version glibc/eglibc
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will be able to run against.
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This will inclde legacy compatibility code for older kernels in
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the C library, thus ensuring that it will run on a large number
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of old kernels.
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The minimum kernel version supported will be dependent upon the
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target you build for. For example:
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alpha*-*-linux-gnu Requires Linux 2.6.9 for NPTL
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sh[34]-*-linux-gnu Requires Linux 2.6.11
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powerpc* Requires Linux 2.4.19
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arm*-*-linux-*gnueabi Requires Linux 2.6.16
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config LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS
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bool
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prompt "Same as kernel headers (default)"
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help
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Normaly, you'll want glibc/eglibc to run against the same kernel
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version as the one used for the headers.
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This is the default.
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If enabled, crosstool-ng will use the chosen version of kernel
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headers for the glibc minimum kernel version supported, which is
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what gets passed to "--enable-kernel=" when configuring glibc.
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Enabling this will ensure that no legacy compatibility code for
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older kernels is built into your C libraries, but it will
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be unable to run on kernel versions older than whichever kernel
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headers version you've built the toolchain for.
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If you know for sure that your toolchain will never need to build
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applications that will run under a kernel version older than your
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chosen kernel headers version (CT_KERNEL_VERSION), you can choose
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"y" here.
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config LIBC_GLIBC_KERNEL_VERSION_CHOSEN
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bool
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prompt "Specific kernel version"
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help
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Specify the earliest Linux kernel version you want glibc to
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include support for. This does not have to match the kernel
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headers version used for your toolchain. This controls what is
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passed to the "--enable-kernel=" option to the glibc configure
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script.
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If you want to be able to statically link programs with your
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toolchain's C library, make sure this kernel version is lower than
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all kernels you wish to support to avoid "FATAL: kernel too old"
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errors. The higher the version you specify, the less legacy code
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will be built into libc.
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Most people can leave this at the default value of "2.6.9".
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if LIBC_GLIBC_KERNEL_VERSION_CHOSEN
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config LIBC_GLIBC_MIN_KERNEL_VERSION
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string
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prompt "Minimum kernel version to support"
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default "2.6.9"
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help
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Enter here the lowest kernel version glibc/eglibc will be able to
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run against.
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The minimum kernel version supported will be dependent upon the
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target you build for. For example:
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alpha*-*-linux-gnu Requires Linux 2.6.9 for NPTL
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sh[34]-*-linux-gnu Requires Linux 2.6.11
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powerpc* Requires Linux 2.4.19
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arm*-*-linux-*gnueabi Requires Linux 2.6.16
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Note that no sanity check is performed by crosstool-NG to ensure
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that the value you enter here is appropriate for your target.
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endif # LIBC_GLIBC_KERNEL_VERSION_CHOSEN
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endchoice
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config LIBC_GLIBC_MIN_KERNEL
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string
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default "" if LIBC_GLIBC_KERNEL_VERSION_NONE
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default KERNEL_VERSION if LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS
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default LIBC_GLIBC_MIN_KERNEL_VERSION if LIBC_GLIBC_KERNEL_VERSION_CHOSEN
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endif # KERNEL_linux
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endif # LIBC_glibc || LIBC_eglibc
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