Fix 32-bit MIPS musl targets.

Author: Alexhuszagh

docker/musl-symlink.sh

@@ -49,6 +49,19 @@ main() {
         fi
     done
 
+    # despite using a completely static build, the 32-bit MIPS targets
+    # link to libgcc_s, the shared libgcc, erroneously.
+    if [[ "${arch}" == "mips-sf" ]] || [[ "${arch}" == "mipsel-sf" ]]; then
+        local toolchain=
+        local gcc_lib=
+        local gcc_ver=
+        toolchain=$(basename "${sysroot}")
+        gcc_lib="/usr/local/lib/gcc/${toolchain}"
+        # shellcheck disable=SC2012
+        gcc_ver=$(ls -1 "${gcc_lib}" | head -n 1)
+        ln -s "${gcc_lib}/${gcc_ver}/libgcc.a" "${gcc_lib}/${gcc_ver}/libgcc_s.a"
+    fi
+
     echo "${sysroot}/lib" >> "/etc/ld-musl-${arch}.path"
 
     rm -rf "${0}"