From 85d164c0c039f59d21ffc694ab8c8328bec06a06 Mon Sep 17 00:00:00 2001
From: Otavio Salvador <otavio@ossystems.com.br>
Date: Sat, 2 Jul 2011 16:44:40 -0300
Subject: [PATCH] cmake: add auto versioning based on GIT

A new AutoVersioning module has been written in a portable way to
allow dynamic versioning on Windows and Unix based systems.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
---
 CMakeLists.txt             |  2 ++
 cmake/AutoVersioning.cmake | 54 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+)
 create mode 100644 cmake/AutoVersioning.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a2d2bf237..e506e3245 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,6 +24,8 @@ set(CMAKE_COLOR_MAKEFILE ON)
 # Include our extra modules
 set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/)
 
+include(AutoVersioning)
+
 # Soname versioning - 0.0.0 since it is not being managed yet
 set(FREERDP_VERSION_MAJOR "0")
 set(FREERDP_VERSION_MINOR "0")
diff --git a/cmake/AutoVersioning.cmake b/cmake/AutoVersioning.cmake
new file mode 100644
index 000000000..04e6479ed
--- /dev/null
+++ b/cmake/AutoVersioning.cmake
@@ -0,0 +1,54 @@
+# - AutoVersioning
+# Gather version from tarball or SCM
+#
+#  This module defines the following variables:
+#     PRODUCT_VERSION    - Version of product
+#
+
+#=============================================================================
+# Copyright 2011 O.S. Systems Software Ltda.
+# Copyright 2011 Otavio Salvador <otavio@ossystems.com.br>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#=============================================================================
+
+if(EXISTS "${CMAKE_SOURCE_DIR}/.version" )
+  file(READ ${CMAKE_SOURCE_DIR}/.version PRODUCT_VERSION)
+
+  string(STRIP ${PRODUCT_VERSION} PRODUCT_VERSION)
+else()
+  execute_process(COMMAND git describe --match "v[0-9]*" --abbrev=4
+                  OUTPUT_VARIABLE PRODUCT_VERSION
+                  OUTPUT_STRIP_TRAILING_WHITESPACE
+                  ERROR_QUIET)
+
+  if(PRODUCT_VERSION)
+	string(REGEX REPLACE "^v(.*)" "\\1" PRODUCT_VERSION ${PRODUCT_VERSION})
+  else()
+    # GIT is the default version
+    set(PRODUCT_VERSION GIT)
+  endif()
+
+  # Check if has not commited changes
+  execute_process(COMMAND git update-index -q --refresh)
+  execute_process(COMMAND git diff-index --name-only HEAD --
+                  OUTPUT_VARIABLE CHANGED_SOURCE
+                  OUTPUT_STRIP_TRAILING_WHITESPACE
+                  ERROR_QUIET)
+
+  if(CHANGED_SOURCE)
+    set(PRODUCT_VERSION ${PRODUCT_VERSION}-dirty)
+  endif()
+endif()
+
+message(STATUS "${CMAKE_PROJECT_NAME} ${PRODUCT_VERSION}")