+# Copyright (c) 2012, Kornel Benko, <kornel@lyx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+# 3. The name of the author may not be used to endorse or promote products
+# derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# To call this script, one has to provide following parameters
+# TOP_SRC_DIR
+# LYX_CMAKE_DIR
+# TOP_BINARY_DIR
+# LYX_DATE: to be used if not under git control
+
+
+set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)
+
+FIND_PROGRAM(LYX_GITVERSION git)
+if(LYX_GITVERSION)
+ # Override the value from configure.ac, if possible
+ EXECUTE_PROCESS(COMMAND ${LYX_GITVERSION} "log" "-1" "--format=%h %ci"
+ WORKING_DIRECTORY "${TOP_SRC_DIR}"
+ OUTPUT_VARIABLE LYX_DATEtmp OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+ if(LYX_DATEtmp MATCHES "^([0-9a-f]+) ([0-9]+-[0-9]+-[0-9]+)")
+ set(LYX_GITHASH ${CMAKE_MATCH_1})
+ set(LYX_DATE ${CMAKE_MATCH_2})
+ message(STATUS "Git-hash = ${LYX_GITHASH}")
+ endif()
+endif()
+
+configure_file(${TOP_SRC_DIR}/${LYX_CMAKE_DIR}/lyx_date.h.cmake ${TOP_BINARY_DIR}/lyx_date.tmp)
+EXECUTE_PROCESS(
+ COMMAND ${CMAKE_COMMAND} -E copy_if_different ${TOP_BINARY_DIR}/lyx_date.tmp ${TOP_BINARY_DIR}/lyx_date.h
+ COMMAND ${CMAKE_COMMAND} -E remove ${TOP_BINARY_DIR}/lyx_date.tmp
+)
+