Preparing a helper script to creat md5sum of a file.

diff --git a/development/cmake/scripts/CreateMD5.cmake b/development/cmake/scripts/CreateMD5.cmake
new file mode 100644 (file)
index 0000000..6ad8b3f
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+++ b/development/cmake/scripts/CreateMD5.cmake
@@ -0,0 +1,51 @@
+#  Copyright (c) 2016, 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
+# FILE_TO_HANDLE
+# MD5_OUTPUT
+
+# Use-example in some CMakeLists.txt
+#
+# set(md5out ...)
+# set(fileToCheck ...)
+# add_custom_command(
+#   OUTPUT ${md5out}
+#   COMMAND ${CMAKE_COMMAND}
+#      "-DFILE_TO_HANDLE=${fileToCheck}"
+#      "-DMD5_OUTPUT=${md5out}"
+#      -P ${TOP_SCRIPT_PATH}/CtreateMD5MD5.cmake
+#   DEPENDS ")
+#
+# add_custom_target(lyxmd5 DEPENDS ${md5out})
+
+if (NOT EXISTS "${FILE_TO_HANDLE}")
+  message(FATAL_ERROR "File \"${FILE_TO_HANDLE}\" does not exit, cannot create md5")
+elseif(IS_DIRECTORY "${FILE_TO_HANDLE}")
+  message(FATAL_ERROR "Name \"${FILE_TO_HANDLE}\" refers to a directory, cannot create md5")
+else()
+  file(MD5 "${FILE_TO_HANDLE}" md5val)
+  file(WRITE "${MD5_OUTPUT}" ${md5val})
+endif()