2011/3/24 Andrew Stubbs <andrew.stu...@linaro.org> > > On 24/03/11 11:05, Imre Kaloz wrote: >> >> On Thu, 24 Mar 2011 11:36:17 +0100, Andrew Stubbs >> <andrew.stu...@linaro.org> wrote: >>> >>> However, you can build your own compiler from the Linaro sources, and >>> then build the libraries you need to match, and you can have v5 support. >>> This is not a straightforward process. :( >> >> You can always use the OpenWrt buildroot to easily build a custom >> Linaro-based crosscompiler, just make sure you select the right libc for >> your needs (we use uClibc by default) and a target similar to yours. > > Or OpenEmbedded or CrossTool / CrossTool-NG.
Thank all of you! you really help me much! You toolchain team is really great! In fact, i knew how to compile a toolchain. As i said, i have compiled a toolchain by simple options: Configured with: ../gcc-linaro-4.4-2011.02-0/ configure --target=arm-none-linux-gnueabi --prefix=/home/vmuser/development/toolchain/build-toolchain/tools --enable-languages=c,c++ --disable-libgomp Thread model: posix gcc version 4.4.5 (Linaro GCC 4.4-2011.02-0) it can make uboot work with arch=armv5. i want to know whether any performance is lost by my simple configure options if the toolchain is used to armv7 with vfpv3? GCC documents show that those options we use to compile gcc will become the default options of gcc runtime. But what is the real benefit toolchains can get by configuring gcc with default arch and fpu since we can switch arch options at runtime? Is the key glibc? If compiling glibc by gcc with options for a special ARM arch and float point unit, it will improve the performance of glibc to the arch? And then the glibc will not support other arch or SoCs without the specified float point unit? > > Andrew > > _______________________________________________ > linaro-toolchain mailing list > linaro-toolchain@lists.linaro.org > http://lists.linaro.org/mailman/listinfo/linaro-toolchain _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-toolchain
