Comment 28 for bug 262251

I had this problem when trying to install Cairo extension for php with PECL. this workaround does worked for me i.e. cat all the old files, but you have to include the NEW libtools.m4 file to !

First copy all the files incase of error !

** my files are located in /usr/share/aclocal. I'm on ubuntu 8.10 **

cd /usr/share/aclocal
mkdir ~/libtoolsbackup
cp lt~obsolete.m4 ltoptions.m4 ltsugar.m4 ltversion.m4 libtool.m4 ~/libtoolsbackup

cd ~/libtoolsbackup
cp libtool.m4 libtool.m4.backup
rm libtool.m4

cat lt~obsolete.m4 ltoptions.m4 ltsugar.m4 ltversion.m4 libtool.m4.bakup >> libtool.m4

before this next step, make sure you have the above files backed-up !

sudo cp libtool.m4 /usr/share/aclocal/