Rename publication date to version info

This is now generated by git.

TODO:
Merge with the git logic used for the tarballs
Test when building from tarballs
Test that it updates the version properly

Fixes #529

CMakeLists.txt

@@ -74,6 +74,19 @@ add_subdirectory( src )
 # Start with the package version being unknown, then prove otherwise
 set( CPACK_PACKAGE_VERSION "unknown" )
 
+
+add_custom_target(
+    version_info ALL
+    COMMAND ${CMAKE_COMMAND}
+        -DPROJECT_SOURCE_DIR=${PROJECT_SOURCE_DIR}
+        -DPROJECT_BINARY_DIR=${PROJECT_BINARY_DIR}
+        -P ${CMAKE_MODULE_PATH}/CreateGitVersionInfo.cmake 
+    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+    COMMENT "Generating version info"
+)
+#include( ${CMAKE_MODULE_PATH}/CreateGitVersionInfo.cmake )
+#create_git_version_info( ${PROJECT_SOURCE_DIR} )
+
 # Use Git to determine parts of the package name
 find_package( Git )
 

CMakeModules/CreateGitVersionInfo.cmake

@@ -0,0 +1,88 @@
+#
+# (c)2018 KiCad Developers
+# (c)2018 Nick Østergaard
+#
+# CMake module to find produce version information
+#
+# Variables generated:
+#
+# KICAD_VERSION        A git describe string
+# KICAD_VERSION_DATE   The date of the last commit
+#
+
+
+
+macro( create_git_version_info _git_src_path )
+    # Include Git support to automagically create version header file.
+    find_package( Git )
+    message( STATUS "Source path is ${_git_src_path}" )
+
+    if( GIT_FOUND )
+        set( _Git_SAVED_LC_ALL "$ENV{LC_ALL}" )
+        set( ENV{LC_ALL} C )
+
+        execute_process(
+            COMMAND
+            ${GIT_EXECUTABLE} describe --dirty --tags
+            WORKING_DIRECTORY "${_git_src_path}"
+            OUTPUT_VARIABLE _git_DESCRIBE
+            ERROR_VARIABLE _git_log_error
+            RESULT_VARIABLE _git_log_result
+            OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+        execute_process(
+            COMMAND
+            ${GIT_EXECUTABLE} show -s --format=%ci
+            WORKING_DIRECTORY "${_git_src_path}"
+            OUTPUT_VARIABLE _git_DATE_CI
+            ERROR_VARIABLE _git_log_error
+            RESULT_VARIABLE _git_log_result
+            OUTPUT_STRIP_TRAILING_WHITESPACE)
+        message( STATUS "${_git_DATE_CI} 0 10 _git_DATE " )
+
+        string( SUBSTRING ${_git_DATE_CI} 0 10 _git_DATE )
+
+        set( ENV{LC_ALL} ${_Git_SAVED_LC_ALL} )
+    endif()
+
+    if( _git_DESCRIBE )
+        set( KICAD_VERSION "${_git_DESCRIBE}" )
+        set( KICAD_VERSION_DATE "${_git_DATE}" )
+    endif()
+
+    set( _wvi_new_version_text
+"// Do not modify this file, it was automatically generated by CMake.
+Published on ${KICAD_VERSION_DATE}
+
+`${KICAD_VERSION}`
+" )
+
+    set( _wvi_write_version_file ON )
+
+    set( OUTPUT_FILE "${PROJECT_BINARY_DIR}/src/version_info.txt")
+
+    # Only write the header if it has changed, to avoid rebuilds
+    if( EXISTS ${OUTPUT_FILE} )
+        file( READ ${OUTPUT_FILE} _wvi_old_version_text )
+        if( _wvi_old_version_text STREQUAL _wvi_new_version_text )
+            message( STATUS "Not updating ${OUTPUT_FILE}" )
+            set( _wvi_write_version_file OFF )
+        endif()
+    endif()
+
+    if( _wvi_write_version_file )
+        message( STATUS "Writing ${OUTPUT_FILE} file with version: ${KICAD_VERSION}" )
+        file( WRITE ${OUTPUT_FILE} ${_wvi_new_version_text} )
+    endif()
+
+    # There should always be a valid version file.  Otherwise, we might miss it.
+    if( NOT EXISTS ${OUTPUT_FILE} )
+        message( FATAL_ERROR "Configuration failed to write file ${OUTPUT_FILE}." )
+    endif()
+endmacro()
+
+create_git_version_info( "${PROJECT_SOURCE_DIR}" )
+
+
+#        -DOUTPUT_FILE=${CMAKE_BINARY_DIR}/kicad_build_version.h
+#        -DSRC_PATH=${PROJECT_SOURCE_DIR}