Added versioning borrowed fron GNU Radio to gr-gsm
diff --git a/cmake/Modules/GrVersion.cmake b/cmake/Modules/GrVersion.cmake
new file mode 100644
index 0000000..bafd0a7
--- /dev/null
+++ b/cmake/Modules/GrVersion.cmake
@@ -0,0 +1,82 @@
+# Copyright 2011,2013 Free Software Foundation, Inc.
+#
+# This file is part of GNU Radio
+#
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# GNU Radio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING. If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+
+if(DEFINED __INCLUDED_GR_VERSION_CMAKE)
+ return()
+endif()
+set(__INCLUDED_GR_VERSION_CMAKE TRUE)
+
+#eventually, replace version.sh and fill in the variables below
+set(MAJOR_VERSION ${VERSION_INFO_MAJOR_VERSION})
+set(API_COMPAT ${VERSION_INFO_API_COMPAT})
+set(MINOR_VERSION ${VERSION_INFO_MINOR_VERSION})
+set(MAINT_VERSION ${VERSION_INFO_MAINT_VERSION})
+
+########################################################################
+# Extract the version string from git describe.
+########################################################################
+find_package(Git)
+
+if(GIT_FOUND AND EXISTS ${CMAKE_SOURCE_DIR}/.git)
+ message(STATUS "Extracting version information from git describe...")
+ execute_process(
+ COMMAND ${GIT_EXECUTABLE} describe --always --abbrev=8 --long
+ OUTPUT_VARIABLE GIT_DESCRIBE OUTPUT_STRIP_TRAILING_WHITESPACE
+ WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+ )
+else()
+ set(GIT_DESCRIBE "v${MAJOR_VERSION}.${API_COMPAT}.x-xxx-xunknown")
+endif()
+
+########################################################################
+# Use the logic below to set the version constants
+########################################################################
+if("${MINOR_VERSION}" STREQUAL "git")
+ # VERSION: 3.3git-xxx-gxxxxxxxx
+ # DOCVER: 3.3git
+ # LIBVER: 3.3git
+ set(VERSION "${GIT_DESCRIBE}")
+ set(DOCVER "${MAJOR_VERSION}.${API_COMPAT}${MINOR_VERSION}")
+ set(LIBVER "${MAJOR_VERSION}.${API_COMPAT}${MINOR_VERSION}")
+ set(RC_MINOR_VERSION "0")
+ set(RC_MAINT_VERSION "0")
+elseif("${MAINT_VERSION}" STREQUAL "git")
+ # VERSION: 3.3.1git-xxx-gxxxxxxxx
+ # DOCVER: 3.3.1git
+ # LIBVER: 3.3.1git
+ set(VERSION "${GIT_DESCRIBE}")
+ set(DOCVER "${MAJOR_VERSION}.${API_COMPAT}.${MINOR_VERSION}${MAINT_VERSION}")
+ set(LIBVER "${MAJOR_VERSION}.${API_COMPAT}.${MINOR_VERSION}${MAINT_VERSION}")
+ math(EXPR RC_MINOR_VERSION "${MINOR_VERSION} - 1")
+ set(RC_MAINT_VERSION "0")
+else()
+ # This is a numbered release.
+ # VERSION: 3.3.1{.x}
+ # DOCVER: 3.3.1{.x}
+ # LIBVER: 3.3.1{.x}
+ if("${MAINT_VERSION}" STREQUAL "0")
+ set(VERSION "${MAJOR_VERSION}.${API_COMPAT}.${MINOR_VERSION}")
+ else()
+ set(VERSION "${MAJOR_VERSION}.${API_COMPAT}.${MINOR_VERSION}.${MAINT_VERSION}")
+ endif()
+ set(DOCVER "${VERSION}")
+ set(LIBVER "${VERSION}")
+ set(RC_MINOR_VERSION ${MINOR_VERSION})
+ set(RC_MAINT_VERSION ${MAINT_VERSION})
+endif()