Updated BM_DEPEND_CHECK to make it possible to disable the test

(Old svn revision: 684)

m4/depends.m4

@@ -10,17 +10,24 @@ AC_DEFUN([BM_DEPEND],
 ])
 
 dnl
-dnl BM_DEPEND_CHECK(var, pkg, version)
+dnl BM_DEPEND_CHECK(var, pkg, version, name, helpstring)
 dnl
 AC_DEFUN([BM_DEPEND_CHECK],
 [
-  AC_MSG_CHECKING([for $2 >= $3])
-  if $PKG_CONFIG --atleast-version=$3 $2 2> /dev/null; then
-    AC_MSG_RESULT([yes])
-    BM_DEPEND([$1], [$2], [$3])
-    AC_DEFINE([HAVE_$1], [1], [Define if you have $2 >= $3])
-  else
-    AC_MSG_RESULT([no])
+  AC_ARG_ENABLE([$4-check],
+AC_HELP_STRING([--enable-$4-check], [Enable checking for $5 (default)])
+AC_HELP_STRING([--disable-$4-check], [Disable checking for $5]),
+    [ac_cv_$1_check=$enableval], [ac_cv_$1_check=yes])
+
+  if test x"$ac_cv_$1_check" = x"yes"; then
+    AC_MSG_CHECKING([for $2 >= $3])
+    if $PKG_CONFIG --atleast-version=$3 $2 2> /dev/null; then
+      AC_MSG_RESULT([yes])
+      BM_DEPEND([$1], [$2], [$3])
+      AC_DEFINE([HAVE_$1], [1], [Define if you have $2 >= $3])
+    else
+      AC_MSG_RESULT([no])
+    fi
   fi
 ])