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openwrt-xburst/toolchain
jk 7e4be8edea [toolchain] provide a cleaner way to specify a biarch toolchain build
Currently, to build a biarch toolchain, we need to explicitly give
options to the binutils and gcc configure commands:

CONFIG_EXTRA_BINUTILS_CONFIG_OPTIONS="--enable-targets=powerpc64-linux-uclibc"
CONFIG_EXTRA_GCC_CONFIG_OPTIONS="--enable-biarch --enable-targets=powerpc64-linux-uclibc"

This change replaces the command line options with an 'extra arch'
configure option:

CONFIG_EXTRA_TARGET_ARCH=y
CONFIG_EXTRA_TARGET_ARCH_NAME="powerpc64"

And a way to invoke this extra arch on the compiler command-line:

CONFIG_EXTRA_TARGET_ARCH_OPTS="-m64"

In this case, this results in an extra compiler:
 'powerpc64-linux-uclibc-gcc', which invokes
 'powerpc-linux-uclibc-gcc -m64'

This is a more standard way of building biarch toolchains, and allows
the packages to not have to care about how to invoke the 64-bit
compiler.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>



git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10802 3c298f89-4303-0410-b956-a3cf2f4a3e73
2008-04-12 23:14:42 +00:00
..
binutils [toolchain] provide a cleaner way to specify a biarch toolchain build 2008-04-12 23:14:42 +00:00
gcc [toolchain] provide a cleaner way to specify a biarch toolchain build 2008-04-12 23:14:42 +00:00
gdb fix gdb installation 2007-10-01 14:55:38 +00:00
kernel-headers fix path to etrax patches (#3055) 2008-02-03 18:22:22 +00:00
uClibc fix typo 2008-04-03 13:44:38 +00:00
Config.in [toolchain] provide a cleaner way to specify a biarch toolchain build 2008-04-12 23:14:42 +00:00
info.mk build system cleanup/restructuring as described in http://lists.openwrt.org/pipermail/openwrt-devel/2007-August/001159.html 2007-08-07 00:04:25 +00:00
Makefile major target cleanup. it is now possible to have subtargets that can override many target settings, including arch - merge adm5120, adm5120eb. target profiles still need to be adapted for subtargets 2007-09-08 19:55:42 +00:00