diff --git a/consensus/cryptonight-rs/build.rs b/consensus/cryptonight-rs/build.rs
index 32b4b3e6f0..d027b66d9f 100644
--- a/consensus/cryptonight-rs/build.rs
+++ b/consensus/cryptonight-rs/build.rs
@@ -26,7 +26,10 @@ fn main() {
         config.flag("-maes").flag("-msse2");
     }
     if target_os.contains("linux") || target_os.contains("macos") {
-        config.flag("-Ofast").flag("-fexceptions");
+        config
+            .flag("-Ofast")
+            .flag("-fexceptions")
+            .flag("-std=gnu99");
     }
     config.compile("cryptonight");
 }
diff --git a/scripts/dev_setup.sh b/scripts/dev_setup.sh
index 19d03f246c..d8d6e00aee 100755
--- a/scripts/dev_setup.sh
+++ b/scripts/dev_setup.sh
@@ -377,7 +377,11 @@ function install_gcc_powerpc_linux_gnu {
   PACKAGE_MANAGER=$1
   #Differently named packages for gcc-powerpc-linux-gnu
   if [[ "$PACKAGE_MANAGER" == "apt-get" ]] || [[ "$PACKAGE_MANAGER" == "yum" ]]; then
-    install_pkg gcc-powerpc-linux-gnu "$PACKAGE_MANAGER"
+    if [[ "$(getconf LONG_BIT)" == "64" ]]; then
+        install_pkg gcc-powerpc64-linux-gnu "$PACKAGE_MANAGER"
+    else
+        install_pkg gcc-powerpc-linux-gnu "$PACKAGE_MANAGER"
+    fi
   fi
   #if [[ "$PACKAGE_MANAGER" == "pacman" ]]; then
   #  install_pkg powerpc-linux-gnu-gcc "$PACKAGE_MANAGER"