From 71225da13537d7d7a6fe01ac5a680f3577a7b0b7 Mon Sep 17 00:00:00 2001
From: Peter Tissen <dravorek@gmail.com>
Date: Thu, 15 Jan 2015 02:58:11 +0100
Subject: [PATCH] don't distinguish between windows and unix for no reason

---
 rpcs3/CMakeLists.txt    |  7 +++++++
 rpcs3/Gui/AboutDialog.h |  6 +-----
 rpcs3/Gui/MainFrame.cpp |  6 ------
 rpcs3/git-version.cmake | 42 +++++++++++++++++++++++++++++++++++++++++
 4 files changed, 50 insertions(+), 11 deletions(-)
 create mode 100644 rpcs3/git-version.cmake

diff --git a/rpcs3/CMakeLists.txt b/rpcs3/CMakeLists.txt
index 9245ac9125..c6eb5643db 100644
--- a/rpcs3/CMakeLists.txt
+++ b/rpcs3/CMakeLists.txt
@@ -5,6 +5,13 @@ include(cotire)
 
 project(rpcs3)
 
+# Generate git-version.cpp at build time.
+add_custom_target(GitVersion ALL
+	DEPENDS something_that_never_exists)
+add_custom_command(OUTPUT something_that_never_exists
+	COMMAND ${CMAKE_COMMAND} -DSOURCE_DIR=${CMAKE_CURRENT_SOURCE_DIR}
+		-P ${CMAKE_CURRENT_SOURCE_DIR}/git-version.cmake)
+
 if (CMAKE_COMPILER_IS_GNUCXX)
 	if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.7.0)
 		message(FATAL_ERROR "GCC ${CMAKE_CXX_COMPILER_VERSION} is too old.")
diff --git a/rpcs3/Gui/AboutDialog.h b/rpcs3/Gui/AboutDialog.h
index ed6897f2bb..78584d6d3d 100644
--- a/rpcs3/Gui/AboutDialog.h
+++ b/rpcs3/Gui/AboutDialog.h
@@ -36,11 +36,7 @@ AboutDialog::AboutDialog(wxWindow *parent)
 	t_descr->SetForegroundColour(wxColor(255,255,255));
 	t_descr->SetPosition(wxPoint(12,50));
 
-#ifdef _WIN32
-	wxStaticText* t_version = new wxStaticText(this, wxID_ANY, wxString::Format(_PRGNAME_" Version : " "git-" RPCS3_GIT_VERSION));
-#else
-	wxStaticText* t_version = new wxStaticText(this, wxID_ANY, wxString::Format(_PRGNAME_" Version : " _PRGVER_));
-#endif
+	wxStaticText* t_version = new wxStaticText(this, wxID_ANY, wxString::Format(_PRGNAME_" Version : " RPCS3_GIT_VERSION));
 	t_version->SetBackgroundColour(wxColor(100,100,100));
 	t_version->SetForegroundColour(wxColor(200,200,200));
 	t_version->SetPosition(wxPoint(12,66));
diff --git a/rpcs3/Gui/MainFrame.cpp b/rpcs3/Gui/MainFrame.cpp
index 067d537b34..975af52f18 100644
--- a/rpcs3/Gui/MainFrame.cpp
+++ b/rpcs3/Gui/MainFrame.cpp
@@ -5,9 +5,7 @@
 #include "rpcs3.h"
 #include "MainFrame.h"
 
-#ifdef _WIN32
 #include "git-version.h"
-#endif
 #include "Ini.h"
 #include "Emu/SysCalls/Modules/cellSysutil.h"
 #include "Emu/RSX/sysutil_video.h"
@@ -72,11 +70,7 @@ MainFrame::MainFrame()
 	, m_sys_menu_opened(false)
 {
 
-#ifdef _WIN32
 	SetLabel(wxString::Format(_PRGNAME_ " " RPCS3_GIT_VERSION));
-#else
-	SetLabel(wxString::Format(_PRGNAME_ " " _PRGVER_));
-#endif
 
 	wxMenuBar* menubar = new wxMenuBar();
 
diff --git a/rpcs3/git-version.cmake b/rpcs3/git-version.cmake
new file mode 100644
index 0000000000..e6b5c86f90
--- /dev/null
+++ b/rpcs3/git-version.cmake
@@ -0,0 +1,42 @@
+set(GIT_VERSION_FILE "${SOURCE_DIR}/git-version.h")
+set(GIT_VERSION "unknown")
+set(GIT_VERSION_UPDATE "1")
+
+find_package(Git)
+if(GIT_FOUND)
+	execute_process(COMMAND ${GIT_EXECUTABLE} describe --always
+		WORKING_DIRECTORY ${SOURCE_DIR}
+		RESULT_VARIABLE exit_code
+		OUTPUT_VARIABLE GIT_VERSION)
+	if(NOT ${exit_code} EQUAL 0)
+		message(WARNING "git describe failed, unable to include version.")
+	endif()
+	string(STRIP ${GIT_VERSION} GIT_VERSION)
+else()
+	message(WARNING "git not found, unable to include version.")
+endif()
+
+if(EXISTS ${GIT_VERSION_FILE})
+	# Don't update if marked not to update.
+	file(STRINGS ${GIT_VERSION_FILE} match
+		REGEX "RPCS3_GIT_VERSION_NO_UPDATE 1")
+	if(NOT ${match} EQUAL "")
+		set(GIT_VERSION_UPDATE "0")
+	endif()
+
+	# Don't update if it's already the same.
+	file(STRINGS ${GIT_VERSION_FILE} match
+		REGEX "${GIT_VERSION}")
+	if(NOT ${match} EQUAL "")
+		set(GIT_VERSION_UPDATE "0")
+	endif()	
+endif()
+
+set(code_string "// This is a generated file.\n\n"
+	"#define RPCS3_GIT_VERSION \"${GIT_VERSION}\"\;\n\n"
+	"// If you don't want this file to update/recompile, change to 1.\n"
+	"#define RPCS3_GIT_VERSION_NO_UPDATE 0\n")
+
+if ("${GIT_VERSION_UPDATE}" EQUAL "1")
+	file(WRITE ${GIT_VERSION_FILE} ${code_string})
+endif()
\ No newline at end of file