From ca0a9b8036469629ef9410676663122e699214d3 Mon Sep 17 00:00:00 2001
From: kervala <devnull@localhost>
Date: Mon, 22 Oct 2012 14:56:25 +0200
Subject: [PATCH] Fixed: revision.h error when hg executable not found

---
 code/CMakeModules/GetRevision.cmake | 31 ++++++++++++---------
 code/CMakeModules/nel.cmake         | 43 +++++++++++++++++++++++------
 2 files changed, 53 insertions(+), 21 deletions(-)

diff --git a/code/CMakeModules/GetRevision.cmake b/code/CMakeModules/GetRevision.cmake
index 52f443d5f..18e997af2 100644
--- a/code/CMakeModules/GetRevision.cmake
+++ b/code/CMakeModules/GetRevision.cmake
@@ -3,20 +3,24 @@ CMAKE_MINIMUM_REQUIRED(VERSION 2.6.3)
 # ROOT_DIR should be set to root of the repository (where to find the .svn or .hg directory)
 # SOURCE_DIR should be set to root of your code (where to find CMakeLists.txt)
 
-# Replace spaces by semi-columns
-IF(CMAKE_MODULE_PATH)
-  STRING(REPLACE " " ";" CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH})
-ENDIF(CMAKE_MODULE_PATH)
+IF(SOURCE_DIR)
+  # Replace spaces by semi-columns
+  IF(CMAKE_MODULE_PATH)
+    STRING(REPLACE " " ";" CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH})
+  ENDIF(CMAKE_MODULE_PATH)
 
-SET(CMAKE_MODULE_PATH ${SOURCE_DIR}/CMakeModules ${CMAKE_MODULE_PATH})
+  SET(CMAKE_MODULE_PATH ${SOURCE_DIR}/CMakeModules ${CMAKE_MODULE_PATH})
 
-IF(NOT ROOT_DIR AND SOURCE_DIR)
-  SET(ROOT_DIR ${SOURCE_DIR})
-ENDIF(NOT ROOT_DIR AND SOURCE_DIR)
+  IF(NOT ROOT_DIR AND SOURCE_DIR)
+    SET(ROOT_DIR ${SOURCE_DIR})
+  ENDIF(NOT ROOT_DIR AND SOURCE_DIR)
 
-IF(NOT SOURCE_DIR AND ROOT_DIR)
-  SET(SOURCE_DIR ${ROOT_DIR})
-ENDIF(NOT SOURCE_DIR AND ROOT_DIR)
+  IF(NOT SOURCE_DIR AND ROOT_DIR)
+    SET(SOURCE_DIR ${ROOT_DIR})
+  ENDIF(NOT SOURCE_DIR AND ROOT_DIR)
+ELSE(SOURCE_DIR)
+  SET(ROOT_DIR ${CMAKE_SOURCE_DIR})
+ENDIF(SOURCE_DIR)
 
 MACRO(NOW RESULT)
   IF (WIN32)
@@ -53,10 +57,11 @@ IF(EXISTS "${ROOT_DIR}/.hg/")
   ENDIF(MERCURIAL_FOUND)
 ENDIF(EXISTS "${ROOT_DIR}/.hg/")
 
-IF(DEFINED REVISION)
+IF(SOURCE_DIR AND DEFINED REVISION)
   IF(EXISTS ${SOURCE_DIR}/revision.h.in)
+    MESSAGE(STATUS "Revision: ${REVISION}")
     NOW(BUILD_DATE)
     CONFIGURE_FILE(${SOURCE_DIR}/revision.h.in revision.h.txt)
     EXECUTE_PROCESS(COMMAND ${CMAKE_COMMAND} -E copy revision.h.txt revision.h) # copy_if_different
   ENDIF(EXISTS ${SOURCE_DIR}/revision.h.in)
-ENDIF(DEFINED REVISION)
+ENDIF(SOURCE_DIR AND DEFINED REVISION)
diff --git a/code/CMakeModules/nel.cmake b/code/CMakeModules/nel.cmake
index b8f74e4de..e1b204690 100644
--- a/code/CMakeModules/nel.cmake
+++ b/code/CMakeModules/nel.cmake
@@ -22,22 +22,39 @@ ENDMACRO(NL_GEN_PC)
 ###
 MACRO(NL_GEN_REVISION_H)
   IF(EXISTS ${CMAKE_SOURCE_DIR}/revision.h.in)
-    INCLUDE_DIRECTORIES(${CMAKE_BINARY_DIR})
-    ADD_DEFINITIONS(-DHAVE_REVISION_H)
-    SET(HAVE_REVISION_H ON)
+    SET(TOOL_FOUND OFF)
+
+    IF(EXISTS "${CMAKE_SOURCE_DIR}/../.svn/")
+      FIND_PACKAGE(Subversion)
+
+      IF(SUBVERSION_FOUND)
+        SET(TOOL_FOUND ON)
+      ENDIF(SUBVERSION_FOUND)
+    ENDIF(EXISTS "${CMAKE_SOURCE_DIR}/../.svn/")
+
+    IF(EXISTS "${CMAKE_SOURCE_DIR}/../.hg/")
+      FIND_PACKAGE(Mercurial)
+
+      IF(MERCURIAL_FOUND)
+        SET(TOOL_FOUND ON)
+      ENDIF(MERCURIAL_FOUND)
+    ENDIF(EXISTS "${CMAKE_SOURCE_DIR}/../.hg/")
 
     # if already generated
     IF(EXISTS ${CMAKE_SOURCE_DIR}/revision.h)
       # copy it
       MESSAGE(STATUS "Copying provided revision.h...")
       FILE(COPY ${CMAKE_SOURCE_DIR}/revision.h DESTINATION ${CMAKE_BINARY_DIR})
-    ELSE(EXISTS ${CMAKE_SOURCE_DIR}/revision.h)
+      SET(HAVE_REVISION_H ON)
+    ENDIF(EXISTS ${CMAKE_SOURCE_DIR}/revision.h)
+
+    IF(TOOL_FOUND)
       # a custom target that is always built
-      ADD_CUSTOM_TARGET(revision ALL
-        DEPENDS ${CMAKE_BINARY_DIR}/revision.h)
+      ADD_CUSTOM_TARGET(revision ALL)
 
       # creates revision.h using cmake script
-      ADD_CUSTOM_COMMAND(OUTPUT ${CMAKE_BINARY_DIR}/revision.h
+      ADD_CUSTOM_COMMAND(TARGET revision
+        PRE_BUILD
         COMMAND ${CMAKE_COMMAND}
         -DSOURCE_DIR=${CMAKE_SOURCE_DIR}
         -DROOT_DIR=${CMAKE_SOURCE_DIR}/..
@@ -47,7 +64,13 @@ MACRO(NL_GEN_REVISION_H)
       SET_SOURCE_FILES_PROPERTIES(${CMAKE_BINARY_DIR}/revision.h
         PROPERTIES GENERATED TRUE
         HEADER_FILE_ONLY TRUE)
-    ENDIF(EXISTS ${CMAKE_SOURCE_DIR}/revision.h)
+      SET(HAVE_REVISION_H ON)
+    ENDIF(TOOL_FOUND)
+
+    IF(HAVE_REVISION_H)
+      INCLUDE_DIRECTORIES(${CMAKE_BINARY_DIR})
+      ADD_DEFINITIONS(-DHAVE_REVISION_H)
+    ENDIF(HAVE_REVISION_H)
   ENDIF(EXISTS ${CMAKE_SOURCE_DIR}/revision.h.in)
 ENDMACRO(NL_GEN_REVISION_H)
 
@@ -922,6 +945,10 @@ MACRO(SETUP_EXTERNAL)
   IF(WIN32)
     FIND_PACKAGE(External REQUIRED)
 
+    IF(NOT VC_DIR)
+      SET(VC_DIR $ENV{VC_DIR})
+    ENDIF(NOT VC_DIR)
+
     IF(MSVC10)
       IF(NOT MSVC10_REDIST_DIR)
         # If you have VC++ 2010 Express, put x64/Microsoft.VC100.CRT/*.dll in ${EXTERNAL_PATH}/redist