On 12/29/2013 09:52 PM, Anthony G. Basile wrote: > On 12/29/2013 04:48 PM, Markos Chandras wrote: >> On 12/29/2013 09:48 PM, Michał Górny wrote: >>> Dnia 2013-12-29, o godz. 16:40:08 >>> Joshua Kinard <[email protected]> napisał(a): >>> >>>> On 12/28/2013 5:58 PM, Michał Górny wrote: >>>>> I've noticed today that mips uses the same CHOST value for all three >>>>> ABIs it supports: >>>>> >>>>> arch/mips/mips64/multilib/make.defaults:CHOST_o32="${CHOST}" >>>>> arch/mips/mips64/multilib/make.defaults:CHOST_n32=${CHOST} >>>>> arch/mips/mips64/multilib/make.defaults:CHOST_n64=${CHOST} >>>>> arch/mips/mipsel/mips64el/multilib/make.defaults:CHOST_o32="${CHOST}" >>>>> arch/mips/mipsel/mips64el/multilib/make.defaults:CHOST_n32="${CHOST}" >>>>> arch/mips/mipsel/mips64el/multilib/make.defaults:CHOST_n64="${CHOST}" >>>>> >>>>> [...] >>>> >>>> Matt can probably vouch for this better, but the only two ABIs >>>> affected by >>>> this are n32 and n64. mips[el]-unknown-linux-gnu implies a 32-bit >>>> big/little endian CHOST, which means the o32 ABI. >>>> mips64[el]-unknown-linux-gnu means either n32 or n64. So no change >>>> should >>>> be needed for o32-based installs. >>> >>> Just to be clear: >>> >>> profiles/arch/mips/mipsel/mips64el/multilib/make.defaults: >>> >>> CHOST="mips64el-unknown-linux-gnu" >>> >>> [...] >>> >>> CFLAGS_o32="-mabi=32" >>> CHOST_o32="${CHOST}" >>> >>> CFLAGS_n32="-mabi=n32" >>> CHOST_n32="${CHOST}" >>> >>> CFLAGS_n64="-mabi=64" >>> CHOST_n64="${CHOST}" >>> >>> So in this case, o32 actually uses mips64el-unknown-linux-gnu, unless >>> I'm missing something. >>> >> >> Yes all 3 ABIs use the same tuple. >> > > I think people are missing Mike's point from earlier, which is that > tuples label toolchains and a toolchain can support multiple abis. So > for example, what would one do on a system which simultaneously has o32, > n32 and n64? -gnuabi32n32n64 looks pretty crazy. > There is only one default ABI, so the toolchain should be named after that. But that does not mean the toolchain can't build for different ABIs
-- Regards, Markos Chandras
