diff --git a/cross/pkgs/gcc/build.sh b/cross/pkgs/gcc/build.sh
index 19a67b0..78730aa 100755
--- a/cross/pkgs/gcc/build.sh
+++ b/cross/pkgs/gcc/build.sh
@@ -11,7 +11,6 @@ function failOnError {
 	# $1 -> exit status on a previous command
 	# $2 -> task description
 	if [ $1 -ne 0 ]; then
-
 		echo "ERROR $2"
 		echo
 		echo BUILD LOG:
@@ -23,7 +22,9 @@ function failOnError {
 
 date > $WORKING_DIR/gcc.build.log
 
-git clean -xdf src
+# verify libtool is installed
+libtool --version >> $WORKING_DIR/gcc.build.log
+failOnError $? "libtool version"
 
 (cd src && fetch) >> $WORKING_DIR/gcc.build.log
 failOnError $? "fetching sources"
@@ -31,26 +32,28 @@ failOnError $? "fetching sources"
 echo -n Building libgmp... | tee -a $WORKING_DIR/gcc.build.log
 (
 	cd src/libgmp &&
-	patch -p0 < $WORKING_DIR/patch/libgmp.patch &&
+	( grep -q jehanne configfsf.sub || patch -p0 < $WORKING_DIR/patch/libgmp.patch ) &&
 	./configure --host=x86_64-jehanne --prefix=/posix/ --with-sysroot=$JEHANNE &&
 	make &&
-	make DESTDIR=$JEHANNE/pkgs/libgmp/6.1.2/ install
-) >> $WORKING_DIR/gcc.build.log
+	make DESTDIR=$JEHANNE/pkgs/libgmp/6.1.2/ install &&
+	libtool --mode=finish $JEHANNE/posix/lib
+) >> $WORKING_DIR/gcc.build.log 2>&1
 failOnError $? "Building libgmp"
 echo done.
 
-# Copy to /posix (to emulate bind during cross compilation)
+#2 Copy to /posix (to emulate bind during cross compilation)
 cp -pfr $JEHANNE/pkgs/libgmp/6.1.2/posix/* $JEHANNE/posix
 
 echo -n Building libmpfr... | tee -a $WORKING_DIR/gcc.build.log
 (
 	cd src/libmpfr &&
-	patch -p0 < $WORKING_DIR/patch/libmpfr.patch &&
+	( grep -q jehanne config.sub || patch -p0 < $WORKING_DIR/patch/libmpfr.patch ) &&
 	./configure --host=x86_64-jehanne --prefix=/posix/ --with-sysroot=$JEHANNE --with-gmp=$JEHANNE/pkgs/libgmp/6.1.2/posix/ &&
 	cp ../../../../patch/MakeNothing.in doc/Makefile &&
 	make &&
-	make DESTDIR=$JEHANNE/pkgs/libmpfr/4.0.1/ install
-) >> $WORKING_DIR/gcc.build.log
+	make DESTDIR=$JEHANNE/pkgs/libmpfr/4.0.1/ install &&
+	libtool --mode=finish $JEHANNE/posix/lib
+) >> $WORKING_DIR/gcc.build.log 2>&1
 failOnError $? "Building libmpfr"
 echo done.
 
@@ -60,33 +63,34 @@ cp -pfr $JEHANNE/pkgs/libmpfr/4.0.1/posix/* $JEHANNE/posix
 echo -n Building libmpc... | tee -a $WORKING_DIR/gcc.build.log
 (
 	cd src/libmpc &&
-	chmod u+w config.sub &&
+	( grep -q jehanne config.sub || ( chmod u+w config.sub &&
 	patch -p0 < $WORKING_DIR/patch/libmpc.patch &&
-	chmod u-w config.sub &&
+	chmod u-w config.sub ) ) &&
 	./configure --host=x86_64-jehanne --prefix=/posix/ --with-sysroot=$JEHANNE --with-gmp=$JEHANNE/pkgs/libgmp/6.1.2/posix/ --with-mpfr=$JEHANNE/pkgs/libmpfr/4.0.1/posix/ &&
 	cp ../../../../patch/MakeNothing.in doc/Makefile &&
 	make &&
-	make DESTDIR=$JEHANNE/pkgs/libmpc/1.1.0/ install
-) >> $WORKING_DIR/gcc.build.log
+	make DESTDIR=$JEHANNE/pkgs/libmpc/1.1.0/ install &&
+	libtool --mode=finish $JEHANNE/posix/lib
+) >> $WORKING_DIR/gcc.build.log 2>&1
 failOnError $? "Building libmpc"
 echo done.
 
 # Copy to /posix (to emulate bind during cross compilation)
 cp -pfr $JEHANNE/pkgs/libmpc/1.1.0/posix/* $JEHANNE/posix
 
-echo -n Building binutils... | tee -a $WORKING_DIR/gcc.build.log
-(
-	cd src/libmpc &&
-	chmod u+w config.sub &&
-	patch -p0 < $WORKING_DIR/patch/libmpc.patch &&
-	chmod u-w config.sub &&
-	./configure --host=x86_64-jehanne --prefix=/posix/ --with-sysroot=$JEHANNE --with-gmp=$JEHANNE/pkgs/libgmp/6.1.2/posix/ --with-mpfr=$JEHANNE/pkgs/libmpfr/4.0.1/posix/ &&
-	cp ../../../../patch/MakeNothing.in doc/Makefile &&
-	make &&
-	make DESTDIR=$JEHANNE/pkgs/libmpc/1.1.0/ install
-) >> $WORKING_DIR/gcc.build.log
-failOnError $? "Building libmpc"
-echo done.
-
-# Copy to /posix (to emulate bind during cross compilation)
-cp -pfr $JEHANNE/pkgs/libmpc/1.1.0/posix/* $JEHANNE/posix
+#echo -n Building binutils... | tee -a $WORKING_DIR/gcc.build.log
+#(
+#	cd src/libmpc &&
+#	chmod u+w config.sub &&
+#	patch -p0 < $WORKING_DIR/patch/libmpc.patch &&
+#	chmod u-w config.sub &&
+#	./configure --host=x86_64-jehanne --prefix=/posix/ --with-sysroot=$JEHANNE --with-gmp=$JEHANNE/pkgs/libgmp/6.1.2/posix/ --with-mpfr=$JEHANNE/pkgs/libmpfr/4.0.1/posix/ &&
+#	cp ../../../../patch/MakeNothing.in doc/Makefile &&
+#	make &&
+#	make DESTDIR=$JEHANNE/pkgs/libmpc/1.1.0/ install
+#) >> $WORKING_DIR/gcc.build.log
+#failOnError $? "Building libmpc"
+#echo done.
+#
+## Copy to /posix (to emulate bind during cross compilation)
+#cp -pfr $JEHANNE/pkgs/libmpc/1.1.0/posix/* $JEHANNE/posix