introduce `DEVLIB'

configure.ac

@@ -166,6 +166,10 @@ AC_ARG_ENABLE([help],
 AC_ARG_ENABLE([xgraph],
     [AS_HELP_STRING([--enable-xgraph], [Enable xgraph compilation.])])
 
+# --enable-devlib: Enable Dynamic Library Load (experimental)
+AC_ARG_ENABLE([devlib],
+    [AS_HELP_STRING([--enable-devlib], [Enable Dynamic Library Load (experimental)])])
+
 # --with-readline:  Includes GNU readline support into CLI.  Default is "no".
 AC_ARG_WITH([readline],
     [AS_HELP_STRING([--with-readline[=yes/no]], [Enable GNU readline support for CLI. Default=no.])])
@@ -801,6 +805,12 @@ fi
 AC_SUBST([XGRAPHDIR])
 AC_SUBST([NOTXGRAPH])
 
+if test "x$enable_devlib" = xyes; then
+    AC_DEFINE([DEVLIB], [], [Define Dynamic Load Function (experimental)])
+    AC_MSG_RESULT([WARNING: Dynamic Load Function (experimental) ENABLED])
+fi
+AM_CONDITIONAL([DEVLIB_WANTED], [test "x$enable_devlib" = xyes])
+
 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc])
 
 #################  XSPICE ##################################################

src/frontend/Makefile.am

@@ -31,8 +31,6 @@ libfte_la_SOURCES =	\
 	com_compose.c	\
 	com_compose.h	\
 	com_commands.h	\
-	com_dl.c	\
-	com_dl.h	\
 	com_display.c	\
 	com_display.h	\
 	com_dump.c	\
@@ -186,6 +184,24 @@ libfte_la_SOURCES =	\
 	where.c		\
 	where.h
 
+
+### com_dl ###
+if XSPICE_WANTED
+if DEVLIB_WANTED
+libfte_la_SOURCES += com_dl.c	\
+	com_dl.h
+else
+libfte_la_SOURCES += com_dl.c	\
+	com_dl.h
+endif
+else
+if DEVLIB_WANTED
+libfte_la_SOURCES += com_dl.c	\
+	com_dl.h
+endif
+endif
+
+
 # TESTS = testcommands
 #
 # bin_PROGRAMS = testcommands

src/frontend/com_dl.c

@@ -1,8 +1,10 @@
+#if defined(XSPICE) || defined(DEVLIB)
 #include "ngspice/ngspice.h" /* for wl */
 #include "ngspice/ftedefs.h"
 #include "ngspice/devdefs.h" /* solve deps in dev.h*/
 #include "../spicelib/devices/dev.h" /* for load library commands */
 #include "com_dl.h"
+#endif
 
 
 #ifdef XSPICE