[Libguestfs] [PATCH 2/2] configure: simplify check for oUnit v2

[Pino Toscano]

Instead of parsing the version, try to look for the OUnit2 module within
the oUnit package.

Followup of commit 46bc79109bb51cfb656863da3635f1c8da5f6412.
---
 configure.ac | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/configure.ac b/configure.ac
index 5ff151b..7a609cb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1135,6 +1135,7 @@ AS_IF([test "x$OCAMLC" != "xno"],[
 OCAML_PKG_gettext=no
 OCAML_PKG_libvirt=no
 OCAML_PKG_oUnit=no
+ounit_is_v2=no
 AS_IF([test "x$OCAMLC" != "xno"],[
     # Create mllib/common_gettext.ml, gettext functions or stubs.
 
@@ -1147,17 +1148,9 @@ AS_IF([test "x$OCAMLC" != "xno"],[
     AC_CHECK_OCAML_PKG(libvirt)
     AC_CHECK_OCAML_PKG(oUnit)
 
-    # oUnit >= 2 is required.  If it's not this version, discard.
+    # oUnit >= 2 is required, so check that it has OUnit2.
     if test "x$OCAML_PKG_oUnit" != "xno"; then
-        AC_MSG_CHECKING([for oUnit version 2 or above])
-        ounit_version=`$OCAMLFIND query oUnit -format '%v'`
-        ounit_version_major=`echo $ounit_version | $AWK -F. '{print $1}'`
-        if test $ounit_version_major -ge 2; then
-            AC_MSG_RESULT([yes])
-        else
-            AC_MSG_RESULT([no])
-            OCAML_PKG_oUnit=no
-        fi
+        AC_CHECK_OCAML_MODULE(ounit_is_v2,[OUnit.OUnit2],OUnit2,[+oUnit])
     fi
 ])
 AM_CONDITIONAL([HAVE_OCAML_PKG_GETTEXT],
@@ -1165,7 +1158,7 @@ AM_CONDITIONAL([HAVE_OCAML_PKG_GETTEXT],
 AM_CONDITIONAL([HAVE_OCAML_PKG_LIBVIRT],
     [test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno" && test "x$OCAML_PKG_libvirt" != "xno"])
 AM_CONDITIONAL([HAVE_OCAML_PKG_OUNIT],
-    [test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno" && test "x$OCAML_PKG_oUnit" != "xno"])
+    [test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno" && test "x$OCAML_PKG_oUnit" != "xno" && test "x$ounit_is_v2" != "xno"])
 
 AC_CHECK_PROG([OCAML_GETTEXT],[ocaml-gettext],[ocaml-gettext],[no])
 AM_CONDITIONAL([HAVE_OCAML_GETTEXT],
-- 
2.1.0