Improve podman build

podman/scripts/make_gcc.sh

@@ -21,12 +21,12 @@ if [ $? -ne 0 ]; then
   exit 1
 fi
 echo "<<< Make binutils >>>"
-make
+make -j$(nproc)
 if [ $? -ne 0 ]; then
   exit 1
 fi
 echo "<<< Install binutils >>>"
-make install
+make -j$(nproc) install
 if [ $? -ne 0 ]; then
   exit 1
 fi
@@ -38,7 +38,7 @@ git clone --recurse-submodules git://gcc.gnu.org/git/gcc.git
 cd gcc
 
 echo "<<< checkout gcc $GCC_VERSION >>>"
-git checkout releases/$GCC_VERSION
+git checkout "releases/gcc-$GCC_VERSION"
 
 mkdir -p build
 cd build
@@ -49,19 +49,17 @@ if [ $? -ne 0 ]; then
 fi
 
 echo "<<< Make gcc >>>"
-make all-gcc
+make -j$(nproc) all-gcc
 if [ $? -ne 0 ]; then
   exit 1
 fi
 
 echo "<<< Install gcc >>>"
-make install-gcc
+make -j$(nproc) install-gcc
 if [ $? -ne 0 ]; then
   exit 1
 fi
 
 echo "<<< Delete GCC folder >>>"
 cd /usr
-rm -fr psx-gcc
-
-# TODO: Remove gcc files after everything 
+rm -fr psx-gcc