build: auto update version info without manually deleting version.h

1 files changed, 32 insertions, 15 deletions

diff --git a/version.cmake b/version.cmake
index 80f1c40b8..75343c381 100644
--- a/version.cmake
+++ b/version.cmake
@@ -1,32 +1,49 @@
+# Copyright (c) 2014-2017, The Monero Project
+# 
+# All rights reserved.
+# 
+# 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 above copyright notice, this list of
+#    conditions and the following disclaimer.
+# 
+# 2. Redistributions in binary form must reproduce the above copyright notice, this list
+#    of conditions and the following disclaimer in the documentation and/or other
+#    materials provided with the distribution.
+# 
+# 3. Neither the name of the copyright holder nor the names of its contributors may be
+#    used to endorse or promote products derived from this software without specific
+#    prior written permission.
+# 
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
+
 function (write_static_version_header hash)
   set(VERSIONTAG "${hash}")
-  configure_file("src/version.h.in" "version/version.h")
-  add_custom_target(version ALL)
+  configure_file("src/version.cpp.in" "version.cpp")
 endfunction ()
 
-file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/version")
 find_package(Git QUIET)
 if ("$Format:$" STREQUAL "")
   # We're in a tarball; use hard-coded variables.
   write_static_version_header("release")
 elseif (GIT_FOUND OR Git_FOUND)
   message(STATUS "Found Git: ${GIT_EXECUTABLE}")
-  set(extra_output)
-  if (CMAKE_GENERATOR MATCHES "Ninja")
-    # Ninja will not rerun the command every time if the file doesn't change,
-    # so inject this bogus output so that it always runs.
-    set(extra_output "${CMAKE_SOURCE_DIR}/.force-git-version-check")
-  endif ()
-  add_custom_command(
-    OUTPUT            "${CMAKE_BINARY_DIR}/version/version.h"
-                      ${extra_output}
+  add_custom_target(genversion ALL
     COMMAND           "${CMAKE_COMMAND}"
                       "-D" "GIT=${GIT_EXECUTABLE}"
-                      "-D" "TO=${CMAKE_BINARY_DIR}/version/version.h"
+                      "-D" "TO=${CMAKE_BINARY_DIR}/version.cpp"
                       "-P" "src/version.cmake"
+    BYPRODUCTS        "${CMAKE_BINARY_DIR}/version.cpp"
     WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}")
-  add_custom_target(version ALL
-    DEPENDS "${CMAKE_BINARY_DIR}/version/version.h")
 else()
   message(STATUS "WARNING: Git was not found!")
   write_static_version_header("unknown")