gentoo-overlay/app-emulation/libguestfs/files/1.28/0001_add_gentoo_names_to_configure.patch

diff --git a/configure.ac b/configure.ac
--- a/configure.ac
+++ b/configure.ac
@@ -482,6 +482,11 @@
         DISTRO=UBUNTU
     fi
 fi
+
+if test -f /etc/gentoo-release; then
+    DISTRO=GENTOO
+fi
+
 if test -f /etc/arch-release; then
     DISTRO=ARCHLINUX
 fi