Messages in this thread |  | | Subject | Re: Updating kernel.org cross compilers? | From | Guenter Roeck <> | Date | Sat, 29 Apr 2017 20:37:49 -0700 |
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On 04/26/2017 07:14 AM, Andre Przywara wrote: > Hi! > > (Tony: I've seen you redirecting to "Chris" in an older email, but the > web archive doesn't have his email address) > > It seems that many people (even outside the Linux kernel community) use > the cross compilers provided at kernel.org/pub/tools/crosstool. > The latest compiler I find there is 4.9.0, which celebrated its third > birthday at the weekend, also has been superseded by 4.9.4 meanwhile. > > So I took Segher's buildall scripts from [1] and threw binutils 2.28 and > GCC 6.3.0 at them. After removing --enable-sjlj-exceptions from > build-gcc and adding --disable-multilib (for building x86-64 on a x86-64 > box without 32-bit libs) I was able to build (bare-metal) toolchains for > all architectures except arc, m68k, tilegx and tilepro. > Now my understanding is that a baremetal/stage 1 compiler should be > build with "all-gcc" instead of the implicit "all" make target, and > "install-gcc" instead of "install". And indeed adding this to build-gcc > makes all toolchains build now - except arc, which needs an explicit > "--with-cpu=arc700" on the GCC configure command line. > > So after those changes, the sequence: > $ ./buildall --toolchain > $ PATH=$PATH:/opt/cross/bin > $ ./buildall --kernel > worked reasonably well for me (binutils 2.28, GCC 6.3.0, Linux 4.11-rc8 > on an Intel host with Ubuntu 14.04.5). Just tilegx/pro is still broken > due to toolchain issues. > Those need libgcc, and to build libgcc you'll have to install the kernel header files. Same is true for cris (and possibly others).
Also, crisv32 builds as well.
> So I wonder what the process is to get those compilers updated? > If you find out let me know.
Guenter
> And what is a good build setup, so that the binaries run on as many > systems as possible? > > Also the web page (https://www.kernel.org/pub/tools/crosstool) seems to > only link outdated builds (4.6.3, mostly), is that on purpose? > > Cheers, > Andre. > > [1] http://git.infradead.org/users/segher/buildall.git/ >
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