Compile the RISC-V Linux and the ramdisk `root.bin`

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#74 opened on Oct 8, 2017 2 comments 0 reactions 0 assignees View on GitHub

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Dominant language: SystemVerilog
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Description

at http://www.lowrisc.org/docs/untether-v0.2/linux_compile/
I tried to compile linux along this page, but I run the
$ make ARCH = riscv -j vmlinux
command in the first script block The following message

------------------------------------------------------------------------------------
CHK include / config / kernel.release
  CHK include / generated / uapi / linux / version.h
  CC scripts / mod / devicetable-offsets.s
  CC scripts / mod / empty.o
riscv64-unknown-linux-gnu-gcc: error: unrecognized command line option '-m64'
riscv64-unknown-linux-gnu-gcc: error: unrecognized command line option '-msoft-float'
scripts / Makefile.build: 204: recipe for target 'scripts / mod / devicetable-offsets.s' failed
make [2]: *** [scripts / mod / devicetable-offsets.sys] Error 1
make [2]: *** Waiting for unfinished jobs ....
riscv64-unknown-linux-gnu-gcc: error: unrecognized command line option '-m64'
riscv64-unknown-linux-gnu-gcc: error: unrecognized command line option '-msoft-float'
scripts / Makefile.build: 308: recipe for target 'scripts / mod / empty.o' failed
make [2]: *** [scripts / mod / empty.o] Error 1
scripts / Makefile.build: 455: recipe for target 'scripts / mod' failed
make [1]: *** [scripts / mod] Error 2
Makefile: 527: recipe for target 'scripts' failed
make: *** [scripts] Error 2
------------------------------------------------------------------------------------

I did not progress anymore as the phrase came up.

Maybe you should modify $ TOP / riscv-tools / linux-3.14.41 / arch / riscv / Makefile. Is there a way?

For reference,
on this page http://www.lowrisc.org/docs/untether-v0.2/
I ran 'Compile and install RISC-V cross-compiler' under '2. The development enviromnet' and
I was following 'Compile the RISC-V Linux and the ramdisk root.bin'.

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Research direction

Start with the linked Compile the RISC-V Linux and the ramdisk root.bin page and inspect TOP/riscv-tools/linux-3.14.41/arch/riscv/Makefile. Re-run the documented make ARCH = riscv -j vmlinux command and compare the compiler options with the reported errors; done means the Linux and root.bin compilation steps complete successfully.

Written by the indexing model from the issue text.

Assessment

Tech stack: linux, shell
Domain: build-system, operating-systems
Issue type: Bug
Difficulty: 4/5
Estimated time: 3-5 days
Activity status: Stale
Clarity: Mostly clear
Newbie friendliness: 25/100