--- ebuild.sh.orig	2010-09-03 14:23:46.000000000 +0200
+++ ebuild.sh	2010-09-03 14:44:29.400038418 +0200
@@ -453,6 +453,33 @@
 	# should be preserved.
 	find . -mindepth 1 -maxdepth 1 ! -type l -print0 | \
 		${XARGS} -0 chmod -fR a+rX,u+w,g-w,o-w
+
+	# New implementation with profiling on compilation support
+	# source "${PORTAGE_BIN_PATH}/isolated-functions.sh"  &>/dev/null
+	PROFILE_DIR="${PROF_DIR:-/var/tmp/profile}"
+	PROFILE_SUBDIR="${PROFILE_DIR}/${CATEGORY}/${PF}"
+	GCC_VERSION=$(gcc --version | awk '{print $3;exit}')
+	if has profile ${FEATURES} ; then
+			if [[ ${GCC_VERSION} < 4.4.0 ]]; then
+				ewarn "\nGCC version is too old to use compilation with profile usage."
+				ewarn "GCC 4.4.0 or higher required."
+				ewarn "Falling back to compilation w/o profile usage.\n"
+			elif has profile-use ${FEATURES} ; then
+				if [[ -d ${PROFILE_SUBDIR} ]] ; then
+					einfo "\nCompiling with profiling data usage.\n"
+					CFLAGS+=" -fprofile-use -fprofile-dir=${PROFILE_SUBDIR} -Wcoverage-mismatch -fprofile-correction"
+					CXXFLAGS="${CFLAGS}"
+				else
+					ewarn "\nNo directory with profiling data. Did you run fist stage and then program itself?\n"
+				fi
+			else
+				einfo "\nCompiling with profiling data gathering support.\n"
+				mkdir -m 777 -p "${PROFILE_SUBDIR}"
+				CFLAGS+=" -fprofile-generate -fprofile-dir=${PROFILE_SUBDIR}"
+				CXXFLAGS="${CFLAGS}"
+				LDFLAGS+=" -fprofile-arcs"
+			fi
+	fi
 }
 
 strip_duplicate_slashes() {