building issues using anchor

[surya-moorthy]

i am using Linux OS and built rust , solana and anchor tools with proper steps followed through docs , but after that when i try to build a dapp which was created using using anchor , this error , i knew all the components and features were added properly , but i couldn't find any solution on it.

i tried to uinstall and reinstall properly as many times , but couldn't able to solve.

Can someone provide any advice on this?

` rror[E0463]: can't find crate for std
|
= note: the x86_64-unknown-linux-gnu target may not be installed
= help: consider adding the standard library to the sysroot with x build library --target x86_64-unknown-linux-gnu
= help: consider building the standard library from source with cargo build -Zbuild-std

For more information about this error, try rustc --explain E0463.
error: could not compile syn (build script) due to 1 previous error
warning: build failed, waiting for other jobs to finish...
error: could not compile serde (build script) due to 1 previous error
error[E0463]: can't find crate for core
|
= note: the x86_64-unknown-linux-gnu target may not be installed
= help: consider adding the standard library to the sysroot with x build library --target x86_64-unknown-linux-gnu
= help: consider building the standard library from source with cargo build -Zbuild-std

error: could not compile proc-macro2 (build script) due to 1 previous error
error: could not compile equivalent (lib) due to 1 previous error
error: could not compile unicode-ident (lib) due to 1 previous error
error: could not compile toml_datetime (lib) due to 1 previous error
error: could not compile typenum (build script) due to 1 previous error
error[E0463]: can't find crate for core
|
= note: the sbpf-solana-solana target may not be installed
= help: consider adding the standard library to the sysroot with x build library --target sbpf-solana-solana
= help: consider building the standard library from source with cargo build -Zbuild-std

error: could not compile cfg-if (lib) due to 1 previous error
error: could not compile version_check (lib) due to 1 previous error
error: could not compile autocfg (lib) due to 1 previous error
error: could not compile hashbrown (lib) due to 1 previous error
error: could not compile winnow (lib) due to 1 previous error \ `

[satyam429]

Ensure Rust target is installed
You may be missing the x86_64-unknown-linux-gnu or bpfel-unknown-unknown target used by Solana programs.

Run:

bash
rustup target add x86_64-unknown-linux-gnu
rustup target add bpfel-unknown-unknown