On 2019-02-19 00:58 -0500, Dennis Clarke wrote: > > After many many many experiments I am seeing that host and target data > is not being passed down into the build of gmp after configure. I took > a look into the gmp sources and multiple Makefile.in and see : > > host = @host@ > host_alias = @host_alias@ > host_cpu = @host_cpu@ > host_os = @host_os@ > host_vendor = @host_vendor@ > > Well what should those really be? > > I am trying to force this : > > vesta_$ grep 'triplet' ./gmp-6.1.2/Makefile.in > build_triplet = x86_64-unknown-freebsd12.0 > host_triplet = riscv64-unknown-freebsd12.0 > vesta_$ > > No amount of finangle of configure options seems to be able to tell the > gmp build that the local host is x86_64-unknown-freebsd12.0 and that the > target should be a RISC-V rv64imafdc architecture. The actual triplet > for the target should be riscv64-unknown-freebsd12.0 however what I am > actually seeing is : > > > configure: summary of build options: > > Version: GNU MP 6.1.2 > Host type: none-unknown-freebsd12.0 > ABI: standard > Install prefix: /usr/local/gcc8 > Compiler: riscv64-unknown-freebsd12.0-gcc > Static libraries: yes > Shared libraries: no > > > That is wrong. I think that is correct. GMP uses some machine-dependent code to run faster. A "none-*-*" triplet just tell GMP to use portable code, instead of any machine- dependent code. Please note that GMP's triplet is not GNU triplet. For example GMP said my machine is "ivybridge-pc-linux-gnu", but its GNU triplet should be "x86_64-pc- linux-gnu" or "i686-pc-linux-gnu". I configured a GMP with --host=none-linux-gnu on my machine and it built fine. And it seems "none" is hard-coded by GCC building system (deliberately) to make GCC executables portable. See makefile.in:12464 in gcc-8.2.0. > What I should see is this : > > configure: summary of build options: > > Version: GNU MP 6.1.2 > Host type: riscv64-unknown-freebsd12.0 > ABI: standard > Install prefix: /usr/local/gcc8 > Compiler: /opt/tools/bin/riscv64-unknown-freebsd12.0-gcc > Static libraries: yes > Shared libraries: yes That's useless. GMP doesn't know what <del>the hell</del> is a RISCV so it will still use portable code only. -- Xi Ruoyao <xry111@xxxxxxxxxxxxxxxx> School of Aerospace Science and Technology, Xidian University
