We want to configure and build libvirt library (0.1.4 for instance) from tar.gz file on a IA32 platform with RHEL4U2 distro without installing and build all Xen modules. The steps are the following: tar -xzvf libvirt-0.1.4.tar.gz cd libvirt-0.1.4 ./configure --prefix=/usr make make install Unfortunatly, the "./configure --prefix=/usr " aborts with: checking for library containing xs_read... no configure: error: Xen store library not found (see attached file) corresponding to lines: dnl search for the Xen store library AC_SEARCH_LIBS(xs_read, [xenstore], [], [AC_MSG_ERROR([Xen store library not found])]) in the configure file. We have then transfered the libxenstore.so file into /usr/lib directory of our machine, but the result is the same. (NB: We had previously transferred all Xen public C header files into /usr/include/xen directory) 1- Could you tell us what are the Xen files strictly necessary to achieve this operation? 2- Is this operation also possible with a IA64 building environment on our IA32 platform? Regards.