configure.ac: Checking for available kernel backends instead of OS

The configure script now checks for availability of several backends like Linux's
joystick, Linux's evdev, BSD's usbhid. This way several backends can be compiled in and
used with the same binary module.
Backend selection code still missing!

3 files changed, 73 insertions, 21 deletions

diff --git a/configure.ac b/configure.ac
index a4fd447..6b1b489 100644
--- a/configure.ac
+++ b/configure.ac
@@ -44,24 +44,6 @@ AC_PROG_CC
 
 AH_TOP([#include "xorg-server.h"])
 
-case $host_os in
-  linux*)
-    IS_LINUX="yes"
-    ;;
-
-  freebsd* | kfreebsd-gnu* | netbsd* | openbsd*)
-    IS_BSD="yes"
-    ;;
-
-  *)
-    AC_MSG_ERROR([Your operating system is not supported by the joystick
-                  driver. Contact xorg@lists.freedesktop.org if you are 
-                  interested in porting it.])
-    ;;
-esac
-AM_CONDITIONAL(LINUX, [test "x$IS_LINUX" = xyes])
-AM_CONDITIONAL(BSD, [test "x$IS_BSD" = xyes])
-
 AC_ARG_WITH(xorg-module-dir,
             AC_HELP_STRING([--with-xorg-module-dir=DIR],
                            [Default xorg module directory 
@@ -78,7 +60,7 @@ if test "x$DEBUGGING" = xyes; then
 else
     AC_DEFINE(NDEBUG, 1, [Disable some debugging code])
 fi
-AM_CONDITIONAL(DEBUG, [test "x$DEBUGGING" = xyes])	   
+AM_CONDITIONAL(DEBUG, [test "x$DEBUGGING" = xyes])
 
 inputdir=${moduledir}/input
 AC_SUBST(inputdir)
@@ -99,9 +81,44 @@ AC_SUBST([CFLAGS])
 # Checks for libraries.
 
 # Checks for header files.
+linux_backend=yes
+AC_CHECK_HEADERS([linux/joystick.h],, [linux_backend=no])
+AM_CONDITIONAL(LINUX_BACKEND, [test "x$linux_backend" = xyes])
+if test "x$linux_backend" = xyes; then
+    AC_DEFINE(LINUX_BACKEND, 1, [Compile Linux joystick backend])
+fi
+
+bsd_backend=yes
+AC_CHECK_HEADERS([usbhid.h dev/usb/usb.h dev/usb/usbhid.h],, [bsd_backend=no])
+AC_CHECK_LIB([usbhid],[hid_get_item],, [bsd_backend=no])
+AM_CONDITIONAL(BSD_BACKEND, [test "x$bsd_backend" = xyes])
+if test "x$bsd_backend" = xyes; then
+    AC_DEFINE(BSD_BACKEND, 1, [Compile BSD usbhid backend])
+fi
+
+evdev_backend=yes
+AC_CHECK_HEADERS([linux/input.h],, [evdev_backend=no])
+AM_CONDITIONAL(EVDEV_BACKEND, [test "x$evdev_backend" = xyes])
+if test "x$evdev_backend" = xyes; then
+    AC_DEFINE(EVDEV_BACKEND, 1, [Compile Linux evdev backend])
+fi
+
 AC_HEADER_STDC
 
 XORG_MANPAGE_SECTIONS
 XORG_RELEASE_VERSION
 
 AC_OUTPUT([Makefile src/Makefile man/Makefile])
+
+echo 
+echo Building linux joystick backend: $linux_backend
+echo Building evdev backend: $evdev_backend
+echo Building BSD backend: $bsd_backend
+
+if test "x$linux_backend" != "xyes" -a \
+	"x$bsd_backend" != "xyes" -a \
+	"x$evdev_backend" != "xyes"; then
+    AC_MSG_ERROR([No backends were found. Your operating is not supported by the
+                  joystick driver. Contact xorg@lists.freedesktop.org if you are 
+                  interested in porting it.])
+fi
diff --git a/src/Makefile.am b/src/Makefile.am
index d9fc76a..fd417b4 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -36,14 +36,19 @@
 
 BSD_SRCS   = bsd_jstk.c
 LINUX_SRCS = linux_jstk.c
+EVDEV_SRCS = evdev_jstk.c
 
-if BSD
+if BSD_BACKEND
 @DRIVER_NAME@_drv_la_SOURCES += $(BSD_SRCS)
 @DRIVER_NAME@_drv_la_LDFLAGS += -lusbhid
 endif
 
-if LINUX
+if LINUX_BACKEND
 @DRIVER_NAME@_drv_la_SOURCES += $(LINUX_SRCS)
 endif
 
+if EVDEV_BACKEND
+@DRIVER_NAME@_drv_la_SOURCES += $(EVDEV_SRCS)
+endif
+
 EXTRA_DIST = $(BSD_SRCS) $(LINUX_SRCS)
diff --git a/src/evdev_jstk.c b/src/evdev_jstk.c
new file mode 100644
index 0000000..67e8c5d
--- /dev/null
+++ b/src/evdev_jstk.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2007      by Sascha Hlusiak. <saschahlusiak@freedesktop.org>     
+ *                                                                            
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is  hereby granted without fee, provided that
+ * the  above copyright   notice appear  in   all  copies and  that both  that
+ * copyright  notice   and   this  permission   notice  appear  in  supporting
+ * documentation, and that   the  name of  Sascha   Hlusiak  not  be  used  in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific,  written      prior  permission.     Sascha   Hlusiak   makes  no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.                   
+ *                                                                            
+ * SASCHA  HLUSIAK  DISCLAIMS ALL   WARRANTIES WITH REGARD  TO  THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED   WARRANTIES OF MERCHANTABILITY  AND   FITNESS, IN NO
+ * EVENT  SHALL SASCHA  HLUSIAK  BE   LIABLE   FOR ANY  SPECIAL, INDIRECT   OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA  OR PROFITS, WHETHER  IN  AN ACTION OF  CONTRACT,  NEGLIGENCE OR OTHER
+ * TORTIOUS  ACTION, ARISING    OUT OF OR   IN  CONNECTION  WITH THE USE    OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+/**
+ * This provides the backend for Linux evdev devices.
+ * Devices are usually /dev/input/event?
+ **/
+
+/* NOTE: IMPLEMENTATION NEEDED */
+