diff --git a/core/gcc/build b/core/gcc/build
index a8a687d4..a0732713 100755
--- a/core/gcc/build
+++ b/core/gcc/build
@@ -17,10 +17,10 @@ mkdir -p gcc-build
 cd gcc-build
 
 # Grab the system's GCC version.
-gcc_version=$(gcc -dumpversion) || gcc_version=null
+gcc_version=$(gcc -dumpfullversion 2>/dev/null) || gcc_version=null
 
 # Skip the bootstrap process if we are able.
-case $2 in "$gcc_version"*)
+case $2 in "${gcc_version%%.*}"*)
     printf '%s\n' "Minor version difference, disabling bootstrap."
     bootstrap=--disable-bootstrap
 esac