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| author | Kito Cheng <kito.cheng@sifive.com> | 2021-01-04 11:18:12 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-01-04 11:18:12 +0800 |
| commit | e15765844cc6a225d04fc0ffee168ccfe811194b (patch) | |
| tree | 2c264dd9b103488728f5edacb0c17aeb85be2265 | |
| parent | c4215130b666039815f9777cebb6c7abf2e2c9c4 (diff) | |
| parent | 049a23d4d8b481d520928e10bb85ea84aff74cf6 (diff) | |
| download | riscv-gnu-toolchain-e15765844cc6a225d04fc0ffee168ccfe811194b.zip riscv-gnu-toolchain-e15765844cc6a225d04fc0ffee168ccfe811194b.tar.gz riscv-gnu-toolchain-e15765844cc6a225d04fc0ffee168ccfe811194b.tar.bz2 | |
Merge pull request #806 from ioannesKX/master
Update README.md for clear instructions on multilib
| -rw-r--r-- | README.md | 14 |
1 files changed, 8 insertions, 6 deletions
@@ -84,16 +84,18 @@ Supported ABIs are ilp32 (32-bit soft-float), ilp32d (32-bit hard-float), ilp32f (32-bit with single-precision in registers and double in memory, niche use only), lp64 lp64f lp64d (same but with 64-bit long and pointers). -### Installation (Linux multilib) +### Installation (Newlib/Linux multilib) -To build the Linux cross-compiler with support for both 32-bit and -64-bit, run the following commands: +To build either cross-compiler with support for both 32-bit and +64-bit, run the following command: ./configure --prefix=/opt/riscv --enable-multilib - make linux + +And then either `make` or `make linux` for the Newlib or Linux cross-compiler respectively. -The multilib compiler will have the prefix riscv64-unknown-linux-gnu-, -but will be able to target both 32-bit and 64-bit systems. +The multilib compiler will have the prefix riscv64-unknown-elf- or riscv64-unknown-linux-gnu-, +but will be able to target both 32-bit and 64-bit systems. It will support +the most common `-march`/`-mabi` options, which can be seen by using the `--print-multi-lib` flag on either cross-compiler. ### Troubleshooting Build Problems |