Enable modelica3d with --enable-modelica3d

git-svn-id: https://openmodelica.org/svn/OpenModelica/trunk@24024 f25d12d1-65f4-0310-ae8a-bbce733d8d8e

Author: sjoelund

configure.in

@@ -543,7 +543,7 @@ else
   IPOPT_LDFLAGS=""
 fi
 
-# check for umfpack 
+# check for umfpack
 AC_ARG_WITH(UMFPACK, [  --without-UMFPACK              Disable compilation with UMFPACK, a sparse linear systems solver],
 [],[with_UMFPACK=yes])
 
@@ -653,7 +653,8 @@ AC_MSG_RESULT([yes])
 fi
 
 AC_MSG_CHECKING([if the user wants Modelica3D])
-AC_ARG_ENABLE(modelica3d, [  --disable-modelica3d          Modelica3D library (dependencies checked by cmake later on; enabled by default)],[test "xno" = x"$enableval" && MODELICA3D=""],[MODELICA3D="yes"])
+MODELICA3D="yes"
+AC_ARG_ENABLE(modelica3d, [  --disable-modelica3d          Modelica3D library (dependencies checked by cmake later on; enabled by default)],[test "xno" = x"$enableval" && MODELICA3D=""],[])
 if test -z "$MODELICA3D" ; then
 AC_MSG_RESULT([no])
 else