Stefan Fiedler:

package/base/gcc/config-300.hlp

@@ -87,3 +87,27 @@ ROCKCFG_PKG_GCC41_NO_JAVA
 ROCKCFG_PKG_GCC41_PROFILED
   Enables profiling during GCC bootstrap and so yields an optimised
   compiler. Build speedup might be 5-10%.
+
+ROCKCFG_PKG_GCC40_BOOTSTRAP
+  Enables bootstrapping the GCC compiler in native builds. GCC builds itself 3
+  times, using the previously built compiler for the 2nd and 3rd build. This
+  is a good way to check if the GCC you build actually works, at the cost of
+  increased build time.
+
+ROCKCFG_PKG_GCC41_BOOTSTRAP
+  Enables bootstrapping the GCC compiler in native builds. GCC builds itself 3
+  times, using the previously built compiler for the 2nd and 3rd build. This
+  is a good way to check if the GCC you build actually works, at the cost of
+  increased build time.
+
+ROCKCFG_PKG_GCC42_BOOTSTRAP
+  Enables bootstrapping the GCC compiler in native builds. GCC builds itself 3
+  times, using the previously built compiler for the 2nd and 3rd build. This
+  is a good way to check if the GCC you build actually works, at the cost of
+  increased build time.
+
+ROCKCFG_PKG_GCC43_BOOTSTRAP
+  Enables bootstrapping the GCC compiler in native builds. GCC builds itself 3
+  times, using the previously built compiler for the 2nd and 3rd build. This
+  is a good way to check if the GCC you build actually works, at the cost of
+  increased build time.

package/base/gcc/config-300.in

@@ -53,9 +53,16 @@ if pkgcheck "gcc=.*" X ; then
 		fi
 		include "package/*/*/subconfig-gcc{$pkg_gcc_version}.in"
 
-		if [[ $gcc_version -ge 34 ]] ; then
-			bool 'Do profiled bootstrap' \
-			    ROCKCFG_PKG_GCC${gcc_version}_PROFILED 1
+		if [[ $gcc_version -ge 40 ]] ; then
+			bool 'Bootstrap the C compiler' \
+			    ROCKCFG_PKG_GCC${gcc_version}_BOOTSTRAP 1
+		fi
+		x="ROCKCFG_PKG_GCC${gcc_version}_BOOTSTRAP"
+		if [ "${!x}" != 0 ] ; then
+			if [[ $gcc_version -ge 34 ]] ; then
+				bool 'Do profiled bootstrap' \
+				    ROCKCFG_PKG_GCC${gcc_version}_PROFILED 1
+			fi
 		fi
 	    fi
 	done

package/base/gcc/gcc.conf

@@ -120,10 +120,15 @@ elif [ $stagelevel -ge 2 ] ; then
 		    --disable-libstdcxx-pch"
 	else
 		var_append extraconfopt ' ' '--enable-languages=$languages'
-		x="ROCKCFG_PKG_GCC${pkg_gcc_version}_PROFILED"
-		if [ "${!x}" = 1 ] ; then
-			var_append makeopt ' ' "GCJFLAGS=\"\$CXXFLAGS\" \
-			    profiledbootstrap"
+		x="ROCKCFG_PKG_GCC${pkg_gcc_version}_BOOTSTRAP"
+		if [ "${!x}" = 0 ] ; then
+			var_append extraconfopt ' ' '--disable-bootstrap'
+		else
+			x="ROCKCFG_PKG_GCC${pkg_gcc_version}_PROFILED"
+			if [ "${!x}" = 1 ] ; then
+				var_append makeopt ' ' "GCJFLAGS=\"\$CXXFLAGS\" \
+				profiledbootstrap"
+			fi
 		fi
 	fi