1 files changed, 82 insertions, 0 deletions
diff --git a/cmake/VersionControl.cmake b/cmake/VersionControl.cmake
new file mode 100644
index 0000000..aa7f4ff
--- /dev/null
+++ b/cmake/VersionControl.cmake
@@ -0,0 +1,82 @@
+# -*- cmake -*-
+#
+# Utility macros for getting info from the version control system.
+# Originally taken from http://emeraldviewer.googlecode.com (GPLv2)
+
+set (PROJECT_SOURCE_DIR .)
+
+FIND_PACKAGE(Subversion)
+
+if (WIN32 AND NOT Subversion_FOUND)
+  # The official subversion client is not available, so fall back to
+  # tortoise if it is installed.
+  find_program(TORTOISE_WCREV_EXECUTABLE 
+    NAMES SubWCRev.exe
+    PATHS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\TortoiseSVN;Directory]/bin"
+    )
+
+    if (NOT TORTOISE_WCREV_EXECUTABLE)
+      message(INFO "TortoiseSVN was not found.")
+    endif (NOT TORTOISE_WCREV_EXECUTABLE)
+endif (WIN32 AND NOT Subversion_FOUND)
+
+# Use this macro on all platforms to set _output_variable to the current SVN
+# revision.
+macro(vcs_get_revision _output_variable)
+  if (Subversion_FOUND)
+    # The included Subversion macros performs operations that require auth,
+    # which breaks when building under fakeroot. Replacing with a custom 
+    # command. --Ambroff
+    # Subversion_WC_INFO(${PROJECT_SOURCE_DIR} _Indra)
+    # set(${_output_variable} ${_Indra_WC_LAST_CHANGED_REV})
+
+    execute_process(
+      COMMAND ${Subversion_SVN_EXECUTABLE} info ../
+      WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
+      OUTPUT_VARIABLE _svn_info_output
+      ERROR_VARIABLE _svn_info_error
+      RESULT_VARIABLE _svn_info_result
+      OUTPUT_STRIP_TRAILING_WHITESPACE
+      ERROR_STRIP_TRAILING_WHITESPACE
+      )
+
+    if (NOT ${_svn_info_result} EQUAL 0)
+      message(STATUS "svn info failed: ${_svn_info_error}")
+      set(${_output_variable} 0)
+    else (NOT ${_svn_info_result} EQUAL 0)
+      string(REGEX REPLACE 
+        "(.*)?Last Changed Rev: ([0-9]+).*$"
+        "\\2"
+        ${_output_variable}
+        ${_svn_info_output})
+    endif (NOT ${_svn_info_result} EQUAL 0)
+  else (Subversion_FOUND)
+    if (WIN32 AND TORTOISE_WCREV_EXECUTABLE)
+      # try to find TortoisSVN if we are on windows.
+      execute_process(
+        COMMAND ${TORTOISE_WCREV_EXECUTABLE} ../
+        WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
+        OUTPUT_VARIABLE _tortoise_rev_info
+        ERROR_VARIABLE _tortoise_rev_info_error
+        RESULT_VARIABLE _tortoise_rev_info_result
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+        ERROR_STRIP_TRAILING_WHITESPACE
+        )
+
+      if (NOT ${_tortoise_rev_info_result} EQUAL 0)
+        message(STATUS "Command '${_tortoise_rev_info_error} ${PROJECT_SOURCE_DIR}' failed: ${_tortoise_rev_info_error}")
+        set(${_output_variable} 0)
+      else (NOT ${_tortoise_rev_info_result} EQUAL 0)
+        string(REGEX REPLACE 
+          "(.*\n)?Last committed at revision ([0-9]+).*$"
+          "\\2"
+          ${_output_variable} "${_tortoise_rev_info}")
+      endif (NOT ${_tortoise_rev_info_result} EQUAL 0)
+    else (WIN32 AND TORTOISE_WCREV_EXECUTABLE)
+      # Ruh-roh... we can't get the revision, so set it to '0'
+      message(STATUS
+              "No subversion client is installed. Setting build number to 0.")
+      set(${_output_variable} 0)
+    endif (WIN32 AND TORTOISE_WCREV_EXECUTABLE)
+  endif (Subversion_FOUND)
+endmacro(vcs_get_revision)