diff options
Diffstat (limited to 'config/libc/glibc-eglibc-common.in')
| -rw-r--r-- | config/libc/glibc-eglibc-common.in | 80 |
1 files changed, 68 insertions, 12 deletions
diff --git a/config/libc/glibc-eglibc-common.in b/config/libc/glibc-eglibc-common.in index 6037fad..007c524 100644 --- a/config/libc/glibc-eglibc-common.in +++ b/config/libc/glibc-eglibc-common.in @@ -7,6 +7,8 @@ # If mconf is updated to accept multiple inclusion of the same # file, then the symlink can go (and the includers be updated). +comment "glibc/eglibc common options" + config LIBC_GLIBC_EXTRA_CONFIG string prompt "extra config" @@ -68,30 +70,57 @@ config LIBC_ADDONS_LIST Eg.: crypt (for very old libces) -config LIBC_GLIBC_USE_HEADERS_MIN_KERNEL +if KERNEL_LINUX + +choice bool - prompt "Use headers version for minimum kernel version supported" - default y + prompt "Minimum supported kernel version" + default LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS + +config LIBC_GLIBC_KERNEL_VERSION_NONE + bool + prompt "Let ./configure decide" help + Let ./configure decide what minimum kernel version glibc/eglibc + will be able to run against. + + This will inclde legacy compatibility code for older kernels in + the C library, thus ensuring that it will run on a large number + of old kernels. + + The minimum kernel version supported will be dependent upon the + target you build for. For example: + alpha*-*-linux-gnu Requires Linux 2.6.9 for NPTL + sh[34]-*-linux-gnu Requires Linux 2.6.11 + powerpc* Requires Linux 2.4.19 + arm*-*-linux-*gnueabi Requires Linux 2.6.16 + +config LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS + bool + prompt "Same as kernel headers (default)" + help + Normaly, you'll want glibc/eglibc to run against the same kernel + version as the one used for the headers. + + This is the default. + If enabled, crosstool-ng will use the chosen version of kernel headers for the glibc minimum kernel version supported, which is what gets passed to "--enable-kernel=" when configuring glibc. - + Enabling this will ensure that no legacy compatibility code for older kernels is built into your C libraries, but it will be unable to run on kernel versions older than whichever kernel headers version you've built the toolchain for. - + If you know for sure that your toolchain will never need to build applications that will run under a kernel version older than your chosen kernel headers version (CT_KERNEL_VERSION), you can choose "y" here. -config LIBC_GLIBC_MIN_KERNEL_CHOSEN - string - prompt "Minimum kernel version supported" - default "2.6.9" - depends on ! LIBC_GLIBC_USE_HEADERS_MIN_KERNEL +config LIBC_GLIBC_KERNEL_VERSION_CHOSEN + bool + prompt "Specific kernel version" help Specify the earliest Linux kernel version you want glibc to include support for. This does not have to match the kernel @@ -107,7 +136,34 @@ config LIBC_GLIBC_MIN_KERNEL_CHOSEN Most people can leave this at the default value of "2.6.9". +if LIBC_GLIBC_KERNEL_VERSION_CHOSEN + +config LIBC_GLIBC_MIN_KERNEL_VERSION + string + prompt "Minimum kernel version to support" + default "2.6.9" + help + Enter here the lowest kernel version glibc/eglibc will be able to + run against. + + The minimum kernel version supported will be dependent upon the + target you build for. For example: + alpha*-*-linux-gnu Requires Linux 2.6.9 for NPTL + sh[34]-*-linux-gnu Requires Linux 2.6.11 + powerpc* Requires Linux 2.4.19 + arm*-*-linux-*gnueabi Requires Linux 2.6.16 + + Note that no sanity check is performed by crosstool-NG to ensure + that the value you enter here is appropriate for your target. + +endif # LIBC_GLIBC_KERNEL_VERSION_CHOSEN + +endchoice + config LIBC_GLIBC_MIN_KERNEL string - default KERNEL_VERSION if LIBC_GLIBC_USE_HEADERS_MIN_KERNEL - default LIBC_GLIBC_MIN_KERNEL_CHOSEN if ! LIBC_GLIBC_USE_HEADERS_MIN_KERNEL + default "" if LIBC_GLIBC_KERNEL_VERSION_NONE + default KERNEL_VERSION if LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS + default LIBC_GLIBC_MIN_KERNEL_VERSION if LIBC_GLIBC_USE_HEADERS_MIN_KERNEL + +endif # KERNEL_LINUX |