[Libguestfs] [PATCH] appliance: read ID_LIKE from os-release as a fallback

[Cédric Bosdonnat]

In the appliance used to build the packages for openSUSE, os-release
is super minimal and only had ID_LIKE=suse. The code setting the
DISTRO variable only searches for ID variable so far, resulting in
invalid packagelist on openSUSE.

This fix reads ID_LIKE as a fallback if ID contains nothing.
---
 m4/guestfs_appliance.m4 | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/m4/guestfs_appliance.m4 b/m4/guestfs_appliance.m4
index fbba3373f..ce45256bc 100644
--- a/m4/guestfs_appliance.m4
+++ b/m4/guestfs_appliance.m4
@@ -97,9 +97,15 @@ AC_MSG_CHECKING([which Linux distro for package names])
 if test -f /etc/os-release; then
     ( . /etc/os-release && echo $ID | tr '@<:@:lower:@:>@' '@<:@:upper:@:>@' ) >&AS_MESSAGE_LOG_FD
     DISTRO="`. /etc/os-release && echo $ID | tr '@<:@:lower:@:>@' '@<:@:upper:@:>@'`"
+    dnl when building SUSE-family packages, the OBS appliance has no ID in os-release,
+    dnl only ID_LIKE set to suse. Read ID_LIKE as a fallback if no ID is found.
+    if test -z "$DISTRO"; then
+        ( . /etc/os-release && echo $ID_LIKE | tr '@<:@:lower:@:>@' '@<:@:upper:@:>@' ) >&AS_MESSAGE_LOG_FD
+        DISTRO="`. /etc/os-release && echo $ID_LIKE | tr '@<:@:lower:@:>@' '@<:@:upper:@:>@'`"
+    fi
     AS_CASE([$DISTRO],
             [FEDORA | RHEL | CENTOS],[DISTRO=REDHAT],
-            [OPENSUSE | SLED | SLES],[DISTRO=SUSE],
+            [OPENSUSE | SLED | SLES | SUSE],[DISTRO=SUSE],
             [ARCH],[DISTRO=ARCHLINUX])
 elif test -f /etc/debian_version; then
     DISTRO=DEBIAN
-- 
2.13.2