Add configure script for searching dependancies.

Console building can be switched on and off.
console_httpd and console_j2000_indi are now built only if all libs are
found.

Getting a working build:
1. run autoconf
2. run ./configure
3. make as usuall

.gitignore

@@ -19,3 +19,8 @@
 .libs
 bin
 include
+autom4te.cache
+buildflags.mk
+config.status
+configure
+

Makefile

@@ -1,5 +1,6 @@
 .PHONY: clean all rel_mktemp_dir console help
 
+include buildflags.mk
 include build.mk
 
 CONTROLLER_REL_TAR:=$(CURDIR)/controller_$(shell date +%Y%m%d%H%M).tar.gz
@@ -143,10 +144,11 @@ TARGETS:=
 $(eval $(call SUBDIR,controller))
 controller: $(TARGETS)
 
+ifdef BUILD_CONSOLE
 TARGETS:=
 $(eval $(call SUBDIR,console))
 console: $(TARGETS)
-
+endif
 
 SRCS_IL = $(filter %.il,$(SRCS))
 $(SRCS_IL): $(IL2C)

buildflags.mk.in

@@ -0,0 +1,3 @@
+BUILD_CONSOLE=@BUILD_CONSOLE@
+BUILD_CONSOLE_HTTPD=@BUILD_CONSOLE_HTTPD@
+BUILD_CONSOLE_J2000_INDI=@BUILD_CONSOLE_J2000_INDI@

configure.ac

@@ -0,0 +1,102 @@
+AC_INIT(dt_ctrl, git)
+
+#######################################################################
+#
+#	Enable/disable console
+#
+
+AC_ARG_ENABLE([console],
+  [AS_HELP_STRING([--disable-console], [Enable console @<:@yes@:>@])],
+  [:],
+  [enable_console=yes])
+
+#######################################################################
+#
+#	Check for libwebsocket
+#
+
+AC_ARG_WITH([libwebsocket],
+  [AS_HELP_STRING([--with-libwebsocket],
+    [build websocket base httpd deamon @<:@default=check@:>@])],
+  [],
+  [with_libwebsocket=check])
+AS_CASE(["$with_libwebsocket"],
+  [yes], 
+    [AC_CHECK_LIB(websockets,libwebsocket_create_context,[HAVE_LIBWEBSOCKET=1])]
+    [AC_CHECK_HEADERS([libwebsockets.h])],
+  [no], 
+    [],
+    [AC_CHECK_LIB(websockets,libwebsocket_create_context,[HAVE_LIBWEBSOCKET=1],[HAVE_LIBWEBSOCKET=0])]
+    [AC_CHECK_HEADERS([libwebsockets.h])]
+  )
+AS_IF([test "$ac_cv_header_libwebsockets_h" != yes],[HAVE_LIBWEBSOCKETS=0])
+
+
+#######################################################################
+#
+#	Check for libindi
+#
+
+AC_ARG_WITH([libindi],
+  [AS_HELP_STRING([--with-libindi],
+    [have indi library @<:@default=check@:>@])],
+  [],
+  [with_libindi=check])
+AS_CASE(["$with_libindi"],
+  [yes],
+    [AC_CHECK_LIB(indi,IDLog,[HAVE_LIBINDI=1])]
+    [AC_CHECK_HEADERS([linindi/indidevapi.h])],
+  [no], 
+    [],
+    [AC_CHECK_LIB(indi,IDLog,[HAVE_LIBINDI=1],[HAVE_LIBINDI=0])]
+    [AC_CHECK_HEADERS([linindi/indidevapi.h])]
+  )
+AS_IF([test "$ac_cv_header_linindi_indidevapi_h" != yes],[HAVE_LIBINDI=0])
+
+
+
+#######################################################################
+#
+#	Some conclusions based on test results
+#
+
+AS_IF([test "$enable_console" = "yes"],
+  [AC_SUBST(BUILD_CONSOLE,["yes"])],
+  [AC_SUBST(BUILD_CONSOLE,[""])])
+
+AS_IF([test "BUILD_CONSOLE = "yes" && test "$HAVE_LIBWEBSOCKET" = "1"],
+  [AC_SUBST(BUILD_CONSOLE_HTTPD,["yes"])],
+  [AC_SUBST(BUILD_CONSOLE_HTTPD,[""])])
+
+AS_IF([test "BUILD_CONSOLE = "yes" && test "$HAVE_LIBINDI" = "1"],
+  [AC_SUBST(BUILD_CONSOLE_J2000_INDI,["yes"])],
+  [AC_SUBST(BUILD_CONSOLE_J2000_INDI,[""])])
+
+
+#######################################################################
+#
+#	Output
+#
+
+AC_CONFIG_FILES(buildflags.mk)
+AC_OUTPUT
+
+
+#######################################################################
+#
+#	Tell the user our findings
+#
+
+AC_MSG_NOTICE([Build:])
+
+AS_IF([test "$BUILD_CONSOLE" != ""],
+   AC_MSG_NOTICE([    console: yes]),
+   AC_MSG_NOTICE([    console: no]))
+
+AS_IF([test "$BUILD_CONSOLE_HTTPD" != ""],
+   AC_MSG_NOTICE([    console_httpd: yes]),
+   AC_MSG_NOTICE([    console_httpd: no]))
+
+AS_IF([test "$BUILD_CONSOLE_J2000_INDI" != ""],
+   AC_MSG_NOTICE([    console_j2000_indi: yes]),
+   AC_MSG_NOTICE([    console_j2000_indi: no]))

console/console/build.mk

@@ -23,10 +23,16 @@ CONSOLE_TARGETS += $(DIR)/console_weather
 CONSOLE_TARGETS += $(DIR)/console_dt_model
 CONSOLE_TARGETS += $(DIR)/await_controller
 CONSOLE_TARGETS += $(DIR)/console_sattracker
+
+ifdef BUILD_CONSOLE_HTTPD
 CONSOLE_TARGETS += $(DIR)/console_httpd
+endif
 
 ifneq ($(OS), FreeBSD)
 CONSOLE_TARGETS += $(DIR)/console_joystick
+endif
+
+ifdef BUILD_CONSOLE_J2000_INDI
 CONSOLE_TARGETS += $(DIR)/console_j2000_indi
 endif