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author | Jeremy Kerr <jk@ozlabs.org> | 2008-04-12 23:14:42 +0000 |
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committer | Jeremy Kerr <jk@ozlabs.org> | 2008-04-12 23:14:42 +0000 |
commit | e5eb1146975a5c28309801965af3d2fb0f98141e (patch) | |
tree | adccbc87893b645052bf0627516313616a982ce5 /toolchain/Config.in | |
parent | 93b986d8a347faa7165141b6f99609953d935e45 (diff) | |
download | master-187ad058-e5eb1146975a5c28309801965af3d2fb0f98141e.tar.gz master-187ad058-e5eb1146975a5c28309801965af3d2fb0f98141e.tar.bz2 master-187ad058-e5eb1146975a5c28309801965af3d2fb0f98141e.zip |
[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
Diffstat (limited to 'toolchain/Config.in')
-rw-r--r-- | toolchain/Config.in | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/toolchain/Config.in b/toolchain/Config.in index 192818f942..c4f6e14f57 100644 --- a/toolchain/Config.in +++ b/toolchain/Config.in @@ -10,6 +10,35 @@ menuconfig TOOLCHAINOPTS bool "Toolchain Options" if DEVEL depends !NATIVE_TOOLCHAIN +menuconfig EXTRA_TARGET_ARCH + bool + prompt "Enable an extra toolchain target architecture" if TOOLCHAINOPTS + default n + help + Some builds may require a 'biarch' toolchain. This option + allows you to specify an additional target arch. + + Most people will answer N here. + + config EXTRA_TARGET_ARCH_NAME + string + prompt "Extra architecture name" if EXTRA_TARGET_ARCH + help + Specify the cpu name (eg powerpc64 or x86_64) of the + additional target architecture. + + config EXTRA_TARGET_ARCH_OPTS + string + prompt "Extra architecture compiler options" if EXTRA_TARGET_ARCH + help + If you're specifying an addition target architecture, + you'll probably need to also provide options to make + the compiler use this alternate arch. + + For example, if you're building a compiler that can build + both powerpc and powerpc64 binaries, you'll need to + specify -m64 here. + source "toolchain/binutils/Config.in" source "toolchain/gcc/Config.in" source "toolchain/uClibc/Config.in" |