It adds an empty space after the package version. Previously the error message looked like: "You must install the dbus-1 >= 1.0.0pkg-config module to compile libvirt" Signed-off-by: Giuseppe Scrivano <gscrivan(a)redhat.com&gt; --- m4/virt-lib.m4 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/m4/virt-lib.m4 b/m4/virt-lib.m4 index 778cd40..70400a1 100644 --- a/m4/virt-lib.m4 +++ b/m4/virt-lib.m4 @@ -336,7 +336,7 @@ AC_DEFUN([LIBVIRT_CHECK_PKG],[ fi if test $fail = 1; then - AC_MSG_ERROR([You must install the ]pc_name[ >= ]pc_version[pkg-config module to compile libvirt]) + AC_MSG_ERROR([You must install the ]pc_name[ >= ]pc_version[ pkg-config module to compile libvirt]) fi if test "x$with_var" = "xyes" ; then