diff --git a/CMakeLists.txt b/CMakeLists.txt
index 45463abdd..ac2e64222 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,9 @@
 project(Slic3r)
 cmake_minimum_required(VERSION 3.2)
 
+include("version.inc")
+set(SLIC3R_RESOURCES_DIR "${CMAKE_CURRENT_SOURCE_DIR}/resources")
+
 if (NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
   message(STATUS "No build type selected, default to Release")
   set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Build type (default Release)" FORCE)
@@ -108,12 +111,12 @@ if (0)
     message("Old CMAKE_CXX_FLAGS_RELEASE: ${CMAKE_CXX_FLAGS_RELEASE}")
     message("Old CMAKE_CXX_FLAGS_RELWITHDEBINFO: ${CMAKE_CXX_FLAGS_RELEASE}")
     message("Old CMAKE_CXX_FLAGS: ${CMAKE_CXX_FLAGS_RELEASE}")
-    set(CMAKE_CXX_FLAGS_RELEASE "/MD /Od /Zi /EHsc /DNDEBUG /DWIN32 /DTBB_USE_ASSERT")
-    set(CMAKE_C_FLAGS_RELEASE "/MD /Od /Zi /DNDEBUG /DWIN32 /DTBB_USE_ASSERT")
-    set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "/MD /Od /Zi /EHsc /DNDEBUG /DWIN32 /DTBB_USE_ASSERT")
-    set(CMAKE_C_FLAGS_RELWITHDEBINFO "/MD /Od /Zi /DNDEBUG /DWIN32 /DTBB_USE_ASSERT")
-    set(CMAKE_CXX_FLAGS "/MD /Od /Zi /EHsc /DNDEBUG /DWIN32 /DTBB_USE_ASSERT")
-    set(CMAKE_C_FLAGS "/MD /Od /Zi /DNDEBUG /DWIN32 /DTBB_USE_ASSERT")
+    set(CMAKE_CXX_FLAGS_RELEASE "/MD /Od /Zi /EHsc /DWIN32 /DTBB_USE_ASSERT")
+    set(CMAKE_C_FLAGS_RELEASE "/MD /Od /Zi /DWIN32 /DTBB_USE_ASSERT")
+    set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "/MD /Od /Zi /EHsc /DWIN32 /DTBB_USE_ASSERT")
+    set(CMAKE_C_FLAGS_RELWITHDEBINFO "/MD /Od /Zi /DWIN32 /DTBB_USE_ASSERT")
+    set(CMAKE_CXX_FLAGS "/MD /Od /Zi /EHsc /DWIN32 /DTBB_USE_ASSERT")
+    set(CMAKE_C_FLAGS "/MD /Od /Zi /DWIN32 /DTBB_USE_ASSERT")
 endif()
 
 # Find and configure boost
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 40bda7aad..b19c5cd02 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -53,9 +53,11 @@ endif()
 add_subdirectory(slic3r)
 
 # Create a slic3r executable
-#FIXME add Windows resource file
-#add_executable(slic3r slic3r.cpp slic3r.rc)
-add_executable(slic3r slic3r.cpp)
+# Process mainfests for various platforms.
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/platform/msw/slic3r.rc.in ${CMAKE_CURRENT_BINARY_DIR}/slic3r.rc @ONLY)
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/platform/msw/slic3r.manifest.in ${CMAKE_CURRENT_BINARY_DIR}/slic3r.manifest @ONLY)
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/platform/osx/Info.plist.in ${CMAKE_CURRENT_BINARY_DIR}/Info.plist @ONLY)
+add_executable(slic3r slic3r.cpp ${CMAKE_CURRENT_BINARY_DIR}/slic3r.rc)
 if(SLIC3R_GUI)
     set_target_properties(slic3r PROPERTIES OUTPUT_NAME "slic3r-gui")
 else()
@@ -67,7 +69,10 @@ if (APPLE)
 #    add_definitions(-DBOOST_THREAD_DONT_USE_CHRONO -DBOOST_NO_CXX11_RVALUE_REFERENCES -DBOOST_THREAD_USES_MOVE)
     # -liconv: boost links to libiconv by default
     target_link_libraries(slic3r "-liconv -framework IOKit" "-framework CoreFoundation" -lc++)
-elseif (NOT MSVC)
+elseif (MSVC)
+    # Manifest is provided through slic3r.rc, don't generate your own.
+    set(CMAKE_EXE_LINKER_FLAGS /MANIFEST:NO)
+else ()
     target_link_libraries(slic3r -ldl -lstdc++)
 endif ()
 
diff --git a/src/libslic3r/CMakeLists.txt b/src/libslic3r/CMakeLists.txt
index 16b70a8da..b5974489d 100644
--- a/src/libslic3r/CMakeLists.txt
+++ b/src/libslic3r/CMakeLists.txt
@@ -1,6 +1,8 @@
 project(libslic3r)
 cmake_minimum_required(VERSION 2.6)
 
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libslic3r_version.h.in ${CMAKE_CURRENT_BINARY_DIR}/libslic3r_version.h @ONLY)
+
 add_library(libslic3r STATIC
     BoundingBox.cpp
     BoundingBox.hpp
@@ -96,6 +98,7 @@ add_library(libslic3r STATIC
     Layer.hpp
     LayerRegion.cpp
     libslic3r.h
+    "${CMAKE_CURRENT_BINARY_DIR}/libslic3r_version.h"
     Line.cpp
     Line.hpp
     Model.cpp
@@ -149,7 +152,7 @@ add_library(libslic3r STATIC
 )
 
 target_compile_definitions(libslic3r PUBLIC -DUSE_TBB ${PNG_DEFINITIONS})
-target_include_directories(libslic3r PUBLIC BEFORE ${LIBNEST2D_INCLUDES} ${PNG_INCLUDE_DIRS})
+target_include_directories(libslic3r PUBLIC ${CMAKE_CURRENT_BINARY_DIR} ${LIBNEST2D_INCLUDES} ${PNG_INCLUDE_DIRS})
 target_link_libraries(libslic3r
     ${LIBNEST2D_LIBRARIES}
     admesh
diff --git a/src/libslic3r/libslic3r.h b/src/libslic3r/libslic3r.h
index 5f2f3fba1..a2ee3fc9f 100644
--- a/src/libslic3r/libslic3r.h
+++ b/src/libslic3r/libslic3r.h
@@ -1,6 +1,8 @@
 #ifndef _libslic3r_h_
 #define _libslic3r_h_
 
+#include "libslic3r_version.h"
+
 // this needs to be included early for MSVC (listing it in Build.PL is not enough)
 #include <ostream>
 #include <iostream>
@@ -15,10 +17,6 @@
 
 #include "Technologies.hpp"
 
-#define SLIC3R_FORK_NAME "Slic3r Prusa Edition"
-#define SLIC3R_VERSION "1.41.0"
-#define SLIC3R_BUILD "UNKNOWN"
-
 typedef int32_t coord_t;
 typedef double  coordf_t;
 
diff --git a/src/libslic3r/libslic3r_version.h.in b/src/libslic3r/libslic3r_version.h.in
new file mode 100644
index 000000000..2259b2302
--- /dev/null
+++ b/src/libslic3r/libslic3r_version.h.in
@@ -0,0 +1,8 @@
+#ifndef __SLIC3R_VERSION_H
+#define __SLIC3R_VERSION_H
+
+#define SLIC3R_FORK_NAME "@SLIC3R_FORK_NAME@"
+#define SLIC3R_VERSION "@SLIC3R_VERSION@"
+#define SLIC3R_BUILD "@SLIC3R_BUILD@"
+
+#endif /* __SLIC3R_VERSION_H */
diff --git a/src/slic3r.manifest b/src/platform/msw/slic3r.manifest.in
similarity index 95%
rename from src/slic3r.manifest
rename to src/platform/msw/slic3r.manifest.in
index c480ca337..ab1cc5ae2 100644
--- a/src/slic3r.manifest
+++ b/src/platform/msw/slic3r.manifest.in
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <assembly xmlns="urn:schemas-microsoft-com:asm.v1" xmlns:asmv3="urn:schemas-microsoft-com:asm.v3" manifestVersion="1.0">
-  <assemblyIdentity version="SLIC3R_RC_VERSION_DOTS" name="Slic3r" type="Win32" />
+  <assemblyIdentity version="@SLIC3R_RC_VERSION_DOTS@" name="Slic3r" type="Win32" />
   <description>Perl</description>
   <trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
     <security>
diff --git a/src/slic3r.rc b/src/platform/msw/slic3r.rc.in
similarity index 70%
rename from src/slic3r.rc
rename to src/platform/msw/slic3r.rc.in
index 7ae8653dd..493f9f752 100644
--- a/src/slic3r.rc
+++ b/src/platform/msw/slic3r.rc.in
@@ -1,6 +1,6 @@
 1 VERSIONINFO
-FILEVERSION SLIC3R_RC_VERSION
-PRODUCTVERSION SLIC3R_RC_VERSION
+FILEVERSION @SLIC3R_RC_VERSION@
+PRODUCTVERSION @SLIC3R_RC_VERSION@
 {
  BLOCK "StringFileInfo"
  {
@@ -8,9 +8,9 @@ PRODUCTVERSION SLIC3R_RC_VERSION
   {
    VALUE "CompanyName", "Prusa Research"
    VALUE "FileDescription", "Slic3r Prusa Edition"
-   VALUE "FileVersion", "SLIC3R_BUILD_ID"
+   VALUE "FileVersion", "@SLIC3R_BUILD_ID@"
    VALUE "ProductName", "Slic3r Prusa Edition"
-   VALUE "ProductVersion", "SLIC3R_BUILD_ID"
+   VALUE "ProductVersion", "@SLIC3R_BUILD_ID@"
    VALUE "InternalName", "Slic3r Prusa Edition"
    VALUE "LegalCopyright", "Copyright \251 2011-2017 Alessandro Ranelucci, \251 2016 Prusa Research"
    VALUE "OriginalFilename", "slic3r.exe"
@@ -21,5 +21,5 @@ PRODUCTVERSION SLIC3R_RC_VERSION
    VALUE "Translation", 0x409, 1252
  }
 }
-2 ICON "../resources/icons/Slic3r.ico"
+2 ICON "@SLIC3R_RESOURCES_DIR@/icons/Slic3r.ico"
 1 24 "slic3r.manifest" 
diff --git a/src/platform/osx/Info.plist.in b/src/platform/osx/Info.plist.in
new file mode 100644
index 000000000..099cb5c37
--- /dev/null
+++ b/src/platform/osx/Info.plist.in
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleExecutable</key>
+  <string>Slic3r</string>
+  <key>CFBundleGetInfoString</key>
+  <string>Slic3r Copyright (C) 2011-2017 Alessandro Ranellucci, (C) 2016-2018 Prusa Reseach</string>
+  <key>CFBundleIconFile</key>
+  <string>Slic3r.icns</string>
+  <key>CFBundleName</key>
+  <string>Slic3r</string>
+  <key>CFBundleShortVersionString</key>
+  <string>Slic3r @SLIC3R_BUILD_ID@</string>
+  <key>CFBundleIdentifier</key>
+  <string>com.prusa3d.slic3r/</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundlePackageType</key>
+  <string>APPL</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>@SLIC3R_BUILD_ID@</string>
+  <key>CGDisableCoalescedUpdates</key>
+  <false/>
+  <key>NSPrincipalClass</key>
+  <string>NSApplication</string>
+  <key>NSHighResolutionCapable</key>
+  <true/>
+</dict>
+</plist>
diff --git a/src/slic3r.cpp b/src/slic3r.cpp
index 35ec62316..29e1e28e9 100644
--- a/src/slic3r.cpp
+++ b/src/slic3r.cpp
@@ -27,6 +27,7 @@
 #include <math.h>
 #include <boost/filesystem.hpp>
 #include <boost/nowide/args.hpp>
+#include <boost/nowide/cenv.hpp>
 #include <boost/nowide/iostream.hpp>
 
 #ifdef USE_WX
@@ -48,6 +49,16 @@ int main(int argc, char **argv)
     //FIXME On Windows, we want to receive the arguments as 16bit characters!
     boost::nowide::args a(argc, argv);
 
+    {
+        const char *loglevel = boost::nowide::getenv("SLIC3R_LOGLEVEL");
+        if (loglevel != nullptr) {
+            if (loglevel[0] >= '0' && loglevel[0] <= '9' && loglevel[1] == 0)
+                set_logging_level(loglevel[0] - '0');
+            else
+                boost::nowide::cerr << "Invalid SLIC3R_LOGLEVEL environment variable: " << loglevel << std::endl;
+        }
+    }
+
     // parse all command line options into a DynamicConfig
     DynamicPrintAndCLIConfig config;
     t_config_option_keys input_files;
@@ -89,7 +100,7 @@ int main(int argc, char **argv)
     // apply command line options to a more handy CLIConfig
     CLIConfig cli_config;
     cli_config.apply(config, true);
-    set_local_dir(cli_config.datadir.value);
+    set_data_dir(cli_config.datadir.value);
 
     DynamicPrintConfig print_config;
 
diff --git a/src/slic3r/GUI/MainFrame.cpp b/src/slic3r/GUI/MainFrame.cpp
index c8a32208f..e97eab7ae 100644
--- a/src/slic3r/GUI/MainFrame.cpp
+++ b/src/slic3r/GUI/MainFrame.cpp
@@ -116,10 +116,15 @@ void MainFrame::init_tabpanel()
         auto panel = m_tabpanel->GetCurrentPage();
 //             panel->OnActivate(); if panel->can('OnActivate');
 
-        std::vector<std::string> tab_names = { "print", "filament", "printer" };
-        for (auto& tab_name : tab_names) {
-            if (tab_name == panel->GetName())
-                m_options_tabs.at(tab_name)->OnActivate();
+        for (auto& tab_name : { "print", "filament", "printer" }) {
+            if (tab_name == panel->GetName()) {
+                // On GTK, the wxEVT_NOTEBOOK_PAGE_CHANGED event is triggered
+                // before the MainFrame is fully set up.
+                auto it = m_options_tabs.find(tab_name);
+                assert(it != m_options_tabs.end());
+                if (it != m_options_tabs.end())
+                    it->second->OnActivate();
+            }
         }
     });
 
diff --git a/version.inc b/version.inc
new file mode 100644
index 000000000..5a23105a8
--- /dev/null
+++ b/version.inc
@@ -0,0 +1,9 @@
+# Included by CMakeLists, edited by the build script
+# (the version numbers are generated by the build script from the git current label)
+
+set(SLIC3R_FORK_NAME "Slic3r Prusa Edition")
+set(SLIC3R_VERSION "1.42.0-alpha")
+set(SLIC3R_BUILD "UNKNOWN")
+set(SLIC3R_RC_VERSION "1,42,0,0")
+set(SLIC3R_RC_VERSION_DOTS "1.42.0.0")
+set(SLIC3R_BUILD_ID "${SLIC3R_VERSION}+${SLIC3R_BUILD}")