Document that ARDUINO_DIR must be a relative path in Windows

Fix #156

2 files changed, 6 insertions, 1 deletions

diff --git a/HISTORY.md b/HISTORY.md
index 538132d..b7deaeb 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -4,6 +4,10 @@ A Makefile for Arduino Sketches
 The following is the rough list of changes that went into different versions.
 I tried to give credit whenever possible. If I have missed anyone, kindly add it to the list.
 
+### 1.3.0 (2014-01-29)
+- Fix: Use more reliable serial device naming in Windows. Fix issue #139 and #155 (https://github.com/peplin)
+- Fix: Document that ARDUINO_DIR must be a relative path in Windows. Fix issue #156 (https://github.com/peplin)
+
 ### 1.2.0 (2014-01-14)
 - Add: Add RPM SPECfile and new `package` directory to store package instructions and files (https://github.com/sej7278)
 - Fix: Remove use of arduino-mk subdirectory in git. Fix issue #151, #152 and #147 (https://github.com/sej7278)
diff --git a/README.md b/README.md
index 5d9406b..7176049 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,8 @@ On Linux, you shouldn't need to set anything other than your board type and port
 
 - `BOARD_TAG` - Type of board, for a list see boards.txt or `make show_boards`
 - `MONITOR_PORT` - The port where your Arduino is plugged in, usually `/dev/ttyACM0` or `/dev/ttyUSB0` in Linux or Mac OS X and `com3`, `com4`, etc. in Windows.
-- `ARDUINO_DIR` - Path to Arduino installation
+- `ARDUINO_DIR` - Path to Arduino installation. In Cygwin in Windows this path must be
+  relative, not absolute (e.g. "../../arduino" and not "/c/cygwin/Arduino").
 - `ARDMK_DIR`   - Path where the `*.mk` are present. If you installed the package, then it is usually `/usr/share/arduino`
 - `AVR_TOOLS_DIR` - Path where the avr tools chain binaries are present. If you are going to use the binaries that came with Arduino installation, then you don't have to set it.