From: Dave Reisner <dreisner@archlinux.org>
Date: Thu, 11 Jul 2013 14:33:48 +0000 (-0400)
Subject: configure: split checks for libkmod >= 14
X-Git-Tag: v206~141
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=e2ca86cf78f911a8be51f0224796e24883019139

configure: split checks for libkmod >= 14

PKG_CHECK_EXISTS won't created a cached variable that later messes with
our PKG_CHECK_MODULES check for an explicit version. Unfortunately,
nesting these checks as the code existed lead to an odd error. Rather,
split the checks apart.

This also improves to the error message when the requisite version
isn't found, and supplies the literal version systemd needs.
---

diff --git a/configure.ac b/configure.ac
index 7451ea4fd..1e196f730 100644
--- a/configure.ac
+++ b/configure.ac
@@ -218,12 +218,12 @@ PKG_CHECK_MODULES(DBUS, [dbus-1 >= 1.3.2])
 have_kmod=no
 AC_ARG_ENABLE(kmod, AS_HELP_STRING([--disable-kmod], [disable loadable modules support]))
 if test "x$enable_kmod" != "xno"; then
-        PKG_CHECK_MODULES(KMOD, [ libkmod ],
-                [PKG_CHECK_MODULES(KMOD, [ libkmod >= 14 ],
-                        [AC_DEFINE(HAVE_KMOD, 1, [Define if kmod is available]) have_kmod=yes],
-                        AC_MSG_ERROR([*** kmod out-of-date, try --disable-kmod]))
-                ],
-                have_kmod=no)
+        PKG_CHECK_EXISTS([ libkmod ], have_kmod=yes, have_kmod=no)
+        if test "x$have_kmod" = "xyes"; then
+                PKG_CHECK_MODULES(KMOD, [ libkmod >= 14 ],
+                        [AC_DEFINE(HAVE_KMOD, 1, [Define if kmod is available])],
+                        AC_MSG_ERROR([*** kmod version >= 14 not found]))
+        fi
         if test "x$have_kmod" = xno -a "x$enable_kmod" = xyes; then
                 AC_MSG_ERROR([*** kmod support requested, but libraries not found])
         fi