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Merge pull request #806 from ioannesKX/master
Update README.md for clear instructions on multilib
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Kito Cheng
5 years ago
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1 changed files with
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README.md
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@ -84,16 +84,18 @@ Supported ABIs are ilp32 (32-bit soft-float), ilp32d (32-bit hard-float), |
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ilp32f (32-bit with single-precision in registers and double in memory, niche |
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use only), lp64 lp64f lp64d (same but with 64-bit long and pointers). |
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### Installation (Linux multilib) |
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### Installation (Newlib/Linux multilib) |
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To build the Linux cross-compiler with support for both 32-bit and |
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64-bit, run the following commands: |
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To build either cross-compiler with support for both 32-bit and |
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64-bit, run the following command: |
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./configure --prefix=/opt/riscv --enable-multilib |
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make linux |
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And then either `make` or `make linux` for the Newlib or Linux cross-compiler respectively. |
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The multilib compiler will have the prefix riscv64-unknown-linux-gnu-, |
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but will be able to target both 32-bit and 64-bit systems. |
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The multilib compiler will have the prefix riscv64-unknown-elf- or riscv64-unknown-linux-gnu-, |
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but will be able to target both 32-bit and 64-bit systems. It will support |
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the most common `-march`/`-mabi` options, which can be seen by using the `--print-multi-lib` flag on either cross-compiler. |
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### Troubleshooting Build Problems |
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