From d99bcb79faf4a27cfe937dd02e09ad37b7698403 Mon Sep 17 00:00:00 2001
From: Philippe Teuwen <yobibe@gmail.com>
Date: Sat, 15 Jun 2013 00:41:20 +0200
Subject: [PATCH] I2C: add i2c support to CMake

---
 cmake/modules/LibnfcDrivers.cmake |  8 ++++++++
 libnfc/CMakeLists.txt             | 10 ++++++++++
 2 files changed, 18 insertions(+)

diff --git a/cmake/modules/LibnfcDrivers.cmake b/cmake/modules/LibnfcDrivers.cmake
index a186739..7a2a11d 100644
--- a/cmake/modules/LibnfcDrivers.cmake
+++ b/cmake/modules/LibnfcDrivers.cmake
@@ -3,8 +3,10 @@ SET(LIBNFC_DRIVER_ACR122_USB ON CACHE BOOL "Enable ACR122 support (Direct USB co
 SET(LIBNFC_DRIVER_ACR122S ON CACHE BOOL "Enable ACR122S support (Use serial port)")
 SET(LIBNFC_DRIVER_ARYGON ON CACHE BOOL "Enable ARYGON support (Use serial port)")
 IF(WIN32)
+  SET(LIBNFC_DRIVER_PN532_I2C OFF CACHE BOOL "Enable PN532 I2C support (Use I2C bus)")
   SET(LIBNFC_DRIVER_PN532_SPI OFF CACHE BOOL "Enable PN532 SPI support (Use SPI bus)")
 ELSE(WIN32)
+  SET(LIBNFC_DRIVER_PN532_I2C ON CACHE BOOL "Enable PN532 I2C support (Use I2C bus)")
   SET(LIBNFC_DRIVER_PN532_SPI ON CACHE BOOL "Enable PN532 SPI support (Use SPI bus)")
 ENDIF(WIN32)
 SET(LIBNFC_DRIVER_PN532_UART ON CACHE BOOL "Enable PN532 UART support (Use serial port)")
@@ -34,6 +36,12 @@ IF(LIBNFC_DRIVER_ARYGON)
   SET(UART_REQUIRED TRUE)
 ENDIF(LIBNFC_DRIVER_ARYGON)
 
+IF(LIBNFC_DRIVER_PN532_I2C)
+  ADD_DEFINITIONS("-DDRIVER_PN532_I2C_ENABLED")
+  SET(DRIVERS_SOURCES ${DRIVERS_SOURCES} "drivers/pn532_i2c")
+  SET(I2C_REQUIRED TRUE)
+ENDIF(LIBNFC_DRIVER_PN532_I2C)
+
 IF(LIBNFC_DRIVER_PN532_SPI)
   ADD_DEFINITIONS("-DDRIVER_PN532_SPI_ENABLED")
   SET(DRIVERS_SOURCES ${DRIVERS_SOURCES} "drivers/pn532_spi")
diff --git a/libnfc/CMakeLists.txt b/libnfc/CMakeLists.txt
index 4925d35..66d2124 100644
--- a/libnfc/CMakeLists.txt
+++ b/libnfc/CMakeLists.txt
@@ -25,6 +25,16 @@ IF(UART_REQUIRED)
   ENDIF(WIN32)
 ENDIF(UART_REQUIRED)
 
+IF(I2C_REQUIRED)
+  IF(WIN32)
+    # Windows is not supported at the moment
+    #LIST(APPEND BUSES_SOURCES ../contrib/win32/libnfc/buses/i2c)
+    MESSAGE( FATAL_ERROR "I2C not (yet) supported under Windows!" )
+  ELSE(WIN32)
+    LIST(APPEND BUSES_SOURCES buses/i2c)
+  ENDIF(WIN32)
+ENDIF(I2C_REQUIRED)
+
 IF(SPI_REQUIRED)
   IF(WIN32)
     # Windows is not supported at the moment