From 2a128e599c3ff90f031e47c7512759f56b1e0066 Mon Sep 17 00:00:00 2001
From: mmdolze <mmdolze@users.sourceforge.net>
Date: Tue, 11 May 2010 20:50:31 +0000
Subject: [PATCH] Move checking for I2C headers to configure.in. Check for
 FreeBSD's iic headers as well.

---
 TODO         | 1 -
 acinclude.m4 | 5 ++---
 configure.in | 6 ++++++
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/TODO b/TODO
index b8deda9..2c8c6e9 100644
--- a/TODO
+++ b/TODO
@@ -7,7 +7,6 @@ Please send a message to the mailing list if you have any question.
 Things for the short term:
 - Use centralized command message parsing engine (more secure)
 - more features for existing display drivers (e.g. adapt them to bignum library)
-- documentation (any help is appreciated)
 - lcd_lib: Make use of the options parameter to specify SEAMLESS_HBARS, the
   height of hbars, etc.
 - lcterm: Support keyboard input
diff --git a/acinclude.m4 b/acinclude.m4
index f56474e..5aafead 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -202,10 +202,9 @@ dnl			else
 				HD44780_DRIVERS="$HD44780_DRIVERS hd44780-hd44780-ethlcd.o"
 				AC_DEFINE(WITH_ETHLCD,[1],[Define to 1 if you want to build hd44780 driver with ethlcd support])
 			fi
-			AC_CHECK_HEADER(linux/i2c-dev.h,
+			if test "$x_ac_have_i2c" = yes; then
 				HD44780_DRIVERS="$HD44780_DRIVERS hd44780-hd44780-i2c.o"
-				AC_DEFINE(HAVE_I2C,[1],[Define to 1 if you have the i2c headers])
-			)
+			fi
 			DRIVERS="$DRIVERS hd44780${SO}"
 			actdrivers=["$actdrivers hd44780"]
 			;;
diff --git a/configure.in b/configure.in
index e9e39f6..06cd43d 100644
--- a/configure.in
+++ b/configure.in
@@ -160,6 +160,12 @@ else
 	AC_MSG_WARN([Can't talk to the parallel port, disabling drivers that use it.])
 fi
 
+x_ac_have_i2c=no
+AC_CHECK_HEADERS([linux/i2c-dev.h dev/iicbus/iic.h], [x_ac_have_i2c=yes])
+if test "$x_ac_have_i2c" = yes; then
+	AC_DEFINE(HAVE_I2C,[1],[Define to 1 if you have the i2c headers])
+fi
+
 dnl Checks for header files.
 AC_HEADER_DIRENT
 AC_HEADER_STDC