Can not run on ASUS Router with Merlin

[qiaolb]

I install rust compiler on my ASUS Router with Merlin. And the information:

package:  rust-1.57.0-armv7-unknown-linux-gnueabihf.tar.gz
rustc version: 1.57.0

uname: Linux RT-AC66U_B1-5838 2.6.36.4brcmarm rust-lang/rust-forge#1 SMP PREEMPT Sat Aug 7 08:32:18 UTC 2021 armv7l GNU/Linux
Router: RT-AC66U_B1
OS: Merlin 386.3_2

Error:

admin@RT-AC66U_B1-5838:/tmp/opt# rustc
-sh: rustc: not found

# readelf -a /opt/bin/rustc | grep interpreter
      [Requesting program interpreter: /lib/ld-linux-armhf.so.3]

Because root path can not write, ld-linux-armhf.so.3 is installed in /opt/lib.

# patchelf --set-interpreter /opt/lib/ld-linux.so.3 /opt/bin/rustc
# readelf -a /opt/bin/rustc | grep interpreter
      [Requesting program interpreter: /opt/lib/ld-linux.so.3]
# rustc
rustc: error while loading shared libraries: /tmp/opt/bin/../lib/librustc_driver-56e6e64e3bf57c2c.so: internal error

[bjorn3]

Then you will have to use patchelf to change the interpreter in the rustc executable to the right path.

[qiaolb]

@bjorn3 Thanks.

I check:

# ls -l /opt/lib/ld-linux.so.3
lrwxrwxrwx    1 admin    root            10 Jan  3 10:13 /opt/lib/ld-linux.so.3 -> ld-2.23.so
# ls -l /tmp/opt/bin/../lib/librustc_driver-56e6e64e3bf57c2c.so
-rw-r--r--    1 admin    root     169961416 Jan  5 08:37 /tmp/opt/bin/../lib/librustc_driver-56e6e64e3bf57c2c.so

These libraries exist. How do I check？

[bjorn3]

Is Merlin glibc or musl based? If it is musl based you will have to use rust-1.57.0-armv7-unknown-linux-musleabihf.tar.gz.

[qiaolb]

Merlin is uClibc. Maybe I just use source code.

[bjorn3]

Probably. According to https://doc.rust-lang.org/nightly/rustc/platform-support.html armv7-unknown-linux-uclibceabihf is a tier 3 target. It says that it is unknown if building rustc for it is supported.

[Dylan-DPC]

Closing this to clean up the issue tracker. This complies with the target policy. If you need further help you can check the forums or other spaces for rust discussions.