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#
# Copyright 2010-2013 Ettus Research LLC
#
# This program 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 of the License, or
# (at your option) any later version.
#
# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
#

########################################################################
INCLUDE(UHDPython) #requires python for parsing
FIND_PACKAGE(Git QUIET)

########################################################################
# Setup Version Numbers
#  - increment major on api compatibility changes
#  - increment minor on feature-level changes
#  - increment patch on for bug fixes and docs
########################################################################
SET(UHD_VERSION_MAJOR 003)
SET(UHD_VERSION_MINOR 005)
SET(UHD_VERSION_PATCH 001)

########################################################################
# Set up DLL resource version numbers
########################################################################

FUNCTION(DEPAD_NUM input_num output_num)
    EXECUTE_PROCESS(
        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
        COMMAND ${PYTHON_EXECUTABLE} -c "print int('${input_num}')"
        OUTPUT_VARIABLE depadded_num OUTPUT_STRIP_TRAILING_WHITESPACE
    )
    SET(${output_num} ${depadded_num} PARENT_SCOPE)
ENDFUNCTION(DEPAD_NUM)

DEPAD_NUM(${UHD_VERSION_MAJOR} RC_VERSION_MAJOR)
DEPAD_NUM(${UHD_VERSION_MINOR} RC_VERSION_MINOR)
DEPAD_NUM(${UHD_VERSION_PATCH} RC_VERSION_PATCH)

########################################################################
# Version information discovery through git log
########################################################################

#grab the git ref id for the current head
EXECUTE_PROCESS(
    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
    COMMAND ${GIT_EXECUTABLE} describe --always --abbrev=8 --long
    OUTPUT_VARIABLE _git_describe OUTPUT_STRIP_TRAILING_WHITESPACE
    RESULT_VARIABLE _git_describe_result
)

#only set the build info on success
IF(_git_describe_result EQUAL 0)
    EXECUTE_PROCESS(
        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
        COMMAND ${PYTHON_EXECUTABLE} -c "print '${_git_describe}'.split('-')[1]"
        OUTPUT_VARIABLE UHD_GIT_COUNT OUTPUT_STRIP_TRAILING_WHITESPACE
    )
    EXECUTE_PROCESS(
        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
        COMMAND ${PYTHON_EXECUTABLE} -c "print '${_git_describe}'.split('-')[2]"
        OUTPUT_VARIABLE UHD_GIT_HASH OUTPUT_STRIP_TRAILING_WHITESPACE
    )
ENDIF()

IF(NOT UHD_GIT_COUNT)
    SET(UHD_GIT_COUNT "0")
ENDIF()

IF(NOT UHD_GIT_HASH)
    SET(UHD_GIT_HASH "unknown")
ENDIF()

IF(UHD_RELEASE_MODE)
    SET(UHD_GIT_HASH ${UHD_RELEASE_MODE})

    #Ignore UHD_GIT_COUNT in UHD_VERSION if the string 'release' is in UHD_RELEASE_MODE
    EXECUTE_PROCESS(
        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
        COMMAND ${PYTHON_EXECUTABLE} -c "print 'release' in '${UHD_RELEASE_MODE}'"
        OUTPUT_VARIABLE TRIM_UHD_VERSION OUTPUT_STRIP_TRAILING_WHITESPACE
    )
ENDIF()


########################################################################
IF(TRIM_UHD_VERSION STREQUAL "True")
    SET(UHD_VERSION "${UHD_VERSION_MAJOR}.${UHD_VERSION_MINOR}.${UHD_VERSION_PATCH}-${UHD_GIT_HASH}")
ELSE()
    SET(UHD_VERSION "${UHD_VERSION_MAJOR}.${UHD_VERSION_MINOR}.${UHD_VERSION_PATCH}-${UHD_GIT_COUNT}-${UHD_GIT_HASH}")
ENDIF()