Copy libgccjit.so in the sysroot to fix the issue

Author: antoyo

.github/workflows/ci.yaml

@@ -128,12 +128,24 @@ jobs:
 
           echo "MAKE_KRUSTFLAGS=KRUSTFLAGS=-Zcodegen-backend=$(pwd)/rustc_codegen_gcc/target/release/librustc_codegen_gcc.so" >> $GITHUB_ENV
 
+          echo $rust_version
+          # Since we use rustc_codegen_gcc from the master branch of the repo,
+          # but don't use y.sh in make to build using rustc_codegen_gcc, we
+          # need to manually copy libgccjit.so in the sysroot directory.
+          ln -s /usr/lib/libgccjit.so ~/.rustup/toolchains/$rust_version-x86_64-unknown-linux-gnu/lib/
+          ls ~/.rustup/toolchains/$rust_version-x86_64-unknown-linux-gnu/lib/
+
           cd rustc_codegen_gcc
           echo 'gcc-path = "/usr/lib"' > config.toml
           #sed -i '/channel/d' rust-toolchain
           export RUSTC_BOOTSTRAP=1
           ./y.sh prepare --only-libcore
           ./y.sh build --sysroot --release
+          ls /home/runner/.rustup/toolchains/nightly-2025-11-24-x86_64-unknown-linux-gnu/lib/
+          echo **********
+          ls -R ..
+          echo **********
+          find / -name libgccjit.so
 
       # Setup: `bindgen`.
       - run: cargo install --locked --version 0.70.1 bindgen-cli