diff --git a/include/etl/cstring.h b/include/etl/cstring.h
index 0ddfc80a..567561e9 100644
--- a/include/etl/cstring.h
+++ b/include/etl/cstring.h
@@ -35,7 +35,7 @@ SOFTWARE.
 #include "basic_string.h"
 #include "hash.h"
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
   #include <initializer_list>
 #endif
 
@@ -141,7 +141,7 @@ namespace etl
       this->assign(first, last);
     }
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
     //*************************************************************************
     /// Construct from initializer_list.
     //*************************************************************************
diff --git a/include/etl/deque.h b/include/etl/deque.h
index da898328..ccccff02 100644
--- a/include/etl/deque.h
+++ b/include/etl/deque.h
@@ -48,7 +48,7 @@ SOFTWARE.
 #include "type_traits.h"
 #include "parameter_type.h"
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
   #include <initializer_list>
 #endif
 
@@ -2066,7 +2066,7 @@ namespace etl
       this->assign(n, value);
     }
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
     //*************************************************************************
     /// Construct from initializer_list.
     //*************************************************************************
diff --git a/include/etl/flat_map.h b/include/etl/flat_map.h
index 2c7e2f99..d12f1f0e 100644
--- a/include/etl/flat_map.h
+++ b/include/etl/flat_map.h
@@ -35,7 +35,7 @@ SOFTWARE.
 #include "reference_flat_map.h"
 #include "pool.h"
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
   #include <initializer_list>
 #endif
 
@@ -854,7 +854,7 @@ namespace etl
       this->assign(first, last);
     }
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
     //*************************************************************************
     /// Construct from initializer_list.
     //*************************************************************************
diff --git a/include/etl/flat_multimap.h b/include/etl/flat_multimap.h
index 210664ff..1545eeea 100644
--- a/include/etl/flat_multimap.h
+++ b/include/etl/flat_multimap.h
@@ -35,7 +35,7 @@ SOFTWARE.
 #include "reference_flat_multimap.h"
 #include "pool.h"
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
   #include <initializer_list>
 #endif
 
@@ -735,7 +735,7 @@ namespace etl
       this->assign(first, last);
     }
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
     //*************************************************************************
     /// Construct from initializer_list.
     //*************************************************************************
diff --git a/include/etl/flat_multiset.h b/include/etl/flat_multiset.h
index 442f2f99..5858c211 100644
--- a/include/etl/flat_multiset.h
+++ b/include/etl/flat_multiset.h
@@ -35,7 +35,7 @@ SOFTWARE.
 #include "reference_flat_multiset.h"
 #include "pool.h"
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
   #include <initializer_list>
 #endif
 
@@ -694,7 +694,7 @@ namespace etl
       this->assign(first, last);
     }
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
     //*************************************************************************
     /// Construct from initializer_list.
     //*************************************************************************
diff --git a/include/etl/flat_set.h b/include/etl/flat_set.h
index fe7590d6..ab6a4cd2 100644
--- a/include/etl/flat_set.h
+++ b/include/etl/flat_set.h
@@ -35,7 +35,7 @@ SOFTWARE.
 #include "reference_flat_set.h"
 #include "pool.h"
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
   #include <initializer_list>
 #endif
 
@@ -760,7 +760,7 @@ namespace etl
       this->assign(first, last);
     }
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
     //*************************************************************************
     /// Construct from initializer_list.
     //*************************************************************************
diff --git a/include/etl/forward_list.h b/include/etl/forward_list.h
index 407380d3..619547a1 100644
--- a/include/etl/forward_list.h
+++ b/include/etl/forward_list.h
@@ -46,7 +46,7 @@ SOFTWARE.
 #include "type_traits.h"
 #include "parameter_type.h"
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
   #include <initializer_list>
 #endif
 
@@ -1415,7 +1415,7 @@ namespace etl
       this->assign(first, last);
     }
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
     //*************************************************************************
     /// Construct from initializer_list.
     //*************************************************************************
diff --git a/include/etl/list.h b/include/etl/list.h
index d48a6f5d..242ac520 100644
--- a/include/etl/list.h
+++ b/include/etl/list.h
@@ -47,7 +47,7 @@ SOFTWARE.
 #include "parameter_type.h"
 #include "algorithm.h"
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
   #include <initializer_list>
 #endif
 
@@ -1655,7 +1655,7 @@ namespace etl
       this->assign(first, last);
     }
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
     //*************************************************************************
     /// Construct from initializer_list.
     //*************************************************************************
diff --git a/include/etl/map.h b/include/etl/map.h
index 4e7476fb..b04ffc87 100644
--- a/include/etl/map.h
+++ b/include/etl/map.h
@@ -47,7 +47,7 @@ SOFTWARE.
 #include "type_traits.h"
 #include "parameter_type.h"
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
   #include <initializer_list>
 #endif
 
@@ -2063,7 +2063,7 @@ namespace etl
       this->assign(first, last);
     }
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
     //*************************************************************************
     /// Constructor, from an initializer_list.
     //*************************************************************************
diff --git a/include/etl/multimap.h b/include/etl/multimap.h
index e08e65dd..6be6b681 100644
--- a/include/etl/multimap.h
+++ b/include/etl/multimap.h
@@ -46,7 +46,7 @@ SOFTWARE.
 #include "type_traits.h"
 #include "parameter_type.h"
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
   #include <initializer_list>
 #endif
 
@@ -1948,7 +1948,7 @@ namespace etl
       this->assign(first, last);
     }
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
     //*************************************************************************
     /// Constructor, from an initializer_list.
     //*************************************************************************
diff --git a/include/etl/multiset.h b/include/etl/multiset.h
index 47673ee5..e0be09db 100644
--- a/include/etl/multiset.h
+++ b/include/etl/multiset.h
@@ -46,7 +46,7 @@ SOFTWARE.
 #include "nullptr.h"
 #include "type_traits.h"
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
   #include <initializer_list>
 #endif
 
@@ -1928,7 +1928,7 @@ namespace etl
       this->assign(first, last);
     }
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
     //*************************************************************************
     /// Constructor, from an initializer_list.
     //*************************************************************************
diff --git a/include/etl/nullptr.h b/include/etl/nullptr.h
index 07de981b..641b6338 100644
--- a/include/etl/nullptr.h
+++ b/include/etl/nullptr.h
@@ -72,14 +72,18 @@ namespace std
   /// A null pointer.
   ///\ingroup nullptr
   //*****************************************************************************
-  const nullptr_t nullptr = {};
+  #if !defined(ETL_STLPORT)
+  const nullptr_t nullptr = { };
+  #endif
 }
 
 //*****************************************************************************
 /// A null pointer.
 ///\ingroup nullptr
 //*****************************************************************************
+#if !defined(ETL_STLPORT)
 const std::nullptr_t nullptr = {};
+#endif
 
 #else
     #include <cstddef>
diff --git a/include/etl/profiles/segger_gcc_stlport.h b/include/etl/profiles/segger_gcc_stlport.h
new file mode 100644
index 00000000..095f4601
--- /dev/null
+++ b/include/etl/profiles/segger_gcc_stlport.h
@@ -0,0 +1,57 @@
+///\file
+
+/******************************************************************************
+The MIT License(MIT)
+
+Embedded Template Library.
+https://github.com/ETLCPP/etl
+https://www.etlcpp.com
+
+Copyright(c) 2017 jwellbelove
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files(the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions :
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+******************************************************************************/
+
+#ifndef ETL_GCC_INCLUDED
+#define ETL_GCC_INCLUDED
+
+//*****************************************************************************
+// GCC
+//*****************************************************************************
+
+#include <limits.h>
+
+#define ETL_TARGET_DEVICE_GENERIC
+#define ETL_TARGET_OS_NONE
+#define ETL_COMPILER_GCC
+#ifdef __cplusplus
+  #define ETL_CPP11_SUPPORTED                      (__cplusplus >= 201103L)
+  #define ETL_CPP14_SUPPORTED                      (__cplusplus >= 201402L)
+  #define ETL_CPP17_SUPPORTED                      0
+#else
+  #define ETL_CPP11_SUPPORTED                      0
+  #define ETL_CPP14_SUPPORTED                      0
+  #define ETL_CPP17_SUPPORTED                      0
+#endif
+#define ETL_NO_NULLPTR_SUPPORT                     1
+#define ETL_NO_LARGE_CHAR_SUPPORT                  !ETL_CPP11_SUPPORTED
+#define ETL_CPP11_TYPE_TRAITS_IS_TRIVIAL_SUPPORTED 0
+#define ETL_STLPORT                                1
+
+#endif
diff --git a/include/etl/ratio.h b/include/etl/ratio.h
index c0f03436..dfc94e86 100644
--- a/include/etl/ratio.h
+++ b/include/etl/ratio.h
@@ -28,13 +28,13 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 ******************************************************************************/
 
-#ifndef __ETL_RATIO__
-#define __ETL_RATIO__
+#ifndef ETL_RATIO_INCLUDED
+#define ETL_RATIO_INCLUDED
 
 #include <stdint.h>
 
 ///\defgroup ratio ratio
-///\ingroup utilities
+///\ingroup maths
 
 namespace etl
 {
@@ -48,8 +48,8 @@ namespace etl
   #if INT_MAX > INT32_MAX
     typedef ratio<1, 1000000000000000000000000> yocto;
     typedef ratio<1, 1000000000000000000000>    zepto;
-    typedef ratio<1, 1000000000000000000>       atto
-    typedef ratio<1, 1000000000000000>          femto
+    typedef ratio<1, 1000000000000000000>       atto;
+    typedef ratio<1, 1000000000000000>          femto;
     typedef ratio<1, 1000000000000>             pico;
   #endif
 
@@ -63,8 +63,8 @@ namespace etl
     typedef ratio<1, 100>                       centi;
     typedef ratio<1, 10>                        deci;
     typedef ratio<10, 1>                        deca;
-    typedef ratio<100, 1>                       hecto
-    typedef ratio<1000, 1>                      kilo
+    typedef ratio<100, 1>                       hecto;
+    typedef ratio<1000, 1>                      kilo;
   #endif
 
   #if (INT_MAX >= INT32_MAX)
diff --git a/include/etl/set.h b/include/etl/set.h
index e405de30..59283c0c 100644
--- a/include/etl/set.h
+++ b/include/etl/set.h
@@ -46,7 +46,7 @@ SOFTWARE.
 #include "type_traits.h"
 #include "parameter_type.h"
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
   #include <initializer_list>
 #endif
 
@@ -1986,7 +1986,7 @@ namespace etl
       this->assign(first, last);
     }
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
     //*************************************************************************
     /// Constructor, from an initializer_list.
     //*************************************************************************
diff --git a/include/etl/stack.h b/include/etl/stack.h
index 3f9e1612..497390df 100644
--- a/include/etl/stack.h
+++ b/include/etl/stack.h
@@ -470,7 +470,7 @@ namespace etl
   //***************************************************************************
   ///\ingroup stack
   /// A fixed capacity stack.
-  /// This stack does not suppo7rt concurrent access by different threads.
+  /// This stack does not support concurrent access by different threads.
   /// \tparam T        The type this stack should support.
   /// \tparam MAX_SIZE The maximum capacity of the stack.
   //***************************************************************************
diff --git a/include/etl/type_traits.h b/include/etl/type_traits.h
index a28a2065..36036944 100644
--- a/include/etl/type_traits.h
+++ b/include/etl/type_traits.h
@@ -33,7 +33,7 @@ SOFTWARE.
 #endif
 
 //***************************************************************************
-// This file has been auto generated. Do not edit this file.
+// THIS FILE HAS BEEN AUTO GENERATED. DO NOT EDIT THIS FILE.
 //***************************************************************************
 
 //***************************************************************************
@@ -269,14 +269,14 @@ namespace etl
   /// is_pod
   /// For C++03, only fundamental and pointers types are recognised.
   ///\ingroup type_traits
-#if (ETL_CPP11_SUPPORTED && !defined(ARDUINO)) && !defined(ETL_IN_UNIT_TEST)
+#if (ETL_CPP11_SUPPORTED && !defined(ARDUINO) && !defined(ETL_STLPORT)) && !defined(ETL_IN_UNIT_TEST)
   // For compilers that support C++11
   template <typename T> struct is_pod : std::is_pod<T> {};
 #else
   template <typename T> struct is_pod : etl::integral_constant<bool, etl::is_fundamental<T>::value || etl::is_pointer<T>::value> {};
 #endif
 
-#if (ETL_CPP11_TYPE_TRAITS_IS_TRIVIAL_SUPPORTED) && !defined(ETL_IN_UNIT_TEST)
+#if (ETL_CPP11_TYPE_TRAITS_IS_TRIVIAL_SUPPORTED) && !defined(ETL_STLPORT) && !defined(ETL_IN_UNIT_TEST)
   /// is_trivially_constructible
   ///\ingroup type_traits
   template <typename T> struct is_trivially_constructible : std::is_trivially_constructible<T> {};
diff --git a/include/etl/u16string.h b/include/etl/u16string.h
index f9c5d22f..e4b8c1af 100644
--- a/include/etl/u16string.h
+++ b/include/etl/u16string.h
@@ -35,7 +35,7 @@ SOFTWARE.
 #include "basic_string.h"
 #include "hash.h"
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
   #include <initializer_list>
 #endif
 
@@ -145,7 +145,7 @@ namespace etl
       this->assign(first, last);
     }
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
     //*************************************************************************
     /// Construct from initializer_list.
     //*************************************************************************
diff --git a/include/etl/u32string.h b/include/etl/u32string.h
index 23554cf4..7a325634 100644
--- a/include/etl/u32string.h
+++ b/include/etl/u32string.h
@@ -35,7 +35,7 @@ SOFTWARE.
 #include "basic_string.h"
 #include "hash.h"
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
   #include <initializer_list>
 #endif
 
@@ -145,7 +145,7 @@ namespace etl
       this->assign(first, last);
     }
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
     //*************************************************************************
     /// Construct from initializer_list.
     //*************************************************************************
diff --git a/include/etl/vector.h b/include/etl/vector.h
index 41683a93..51203597 100644
--- a/include/etl/vector.h
+++ b/include/etl/vector.h
@@ -53,7 +53,7 @@ SOFTWARE.
 #include "debug_count.h"
 #include "private/vector_base.h"
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
   #include <initializer_list>
 #endif
 
@@ -1067,7 +1067,7 @@ namespace etl
       this->assign(first, last);
     }
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
     //*************************************************************************
     /// Constructor, from an initializer_list.
     //*************************************************************************
@@ -1183,7 +1183,7 @@ namespace etl
       this->assign(first, last);
     }
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
     //*************************************************************************
     /// Constructor, from an initializer_list.
     //*************************************************************************
diff --git a/include/etl/version.h b/include/etl/version.h
index 9e698aab..015898b2 100644
--- a/include/etl/version.h
+++ b/include/etl/version.h
@@ -37,9 +37,9 @@ SOFTWARE.
 /// Definitions of the ETL version
 ///\ingroup utilities
 
-#define ETL_VERSION "11.9.2"
+#define ETL_VERSION "11.11.0"
 #define ETL_VERSION_MAJOR 11
-#define ETL_VERSION_MINOR 10
+#define ETL_VERSION_MINOR 11
 #define ETL_VERSION_PATCH  0
 
 #endif
diff --git a/include/etl/wstring.h b/include/etl/wstring.h
index d3d6eb65..a4f7bc23 100644
--- a/include/etl/wstring.h
+++ b/include/etl/wstring.h
@@ -35,7 +35,7 @@ SOFTWARE.
 #include "basic_string.h"
 #include "hash.h"
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
   #include <initializer_list>
 #endif
 
@@ -146,7 +146,7 @@ namespace etl
       this->assign(first, last);
     }
 
-#if ETL_CPP11_SUPPORTED
+#if ETL_CPP11_SUPPORTED && !defined(ETL_STLPORT)
     //*************************************************************************
     /// Construct from initializer_list.
     //*************************************************************************
diff --git a/support/Release notes.txt b/support/Release notes.txt
index 871bb6e7..3501b177 100644
--- a/support/Release notes.txt	
+++ b/support/Release notes.txt	
@@ -1,3 +1,7 @@
+===============================================================================
+11.11.0
+Compatibilty changes for Segger IDE, GCC & STLPort
+
 ===============================================================================
 11.10.0
 Merged CMake branch
diff --git a/test/vs2017/etl.vcxproj b/test/vs2017/etl.vcxproj
index 4c47ec11..d866d331 100644
--- a/test/vs2017/etl.vcxproj
+++ b/test/vs2017/etl.vcxproj
@@ -393,7 +393,9 @@
     <ClInclude Include="..\..\include\etl\profiles\gcc_linux_x86.h" />
     <ClInclude Include="..\..\include\etl\profiles\gcc_windows_x86.h" />
     <ClInclude Include="..\..\include\etl\profiles\msvc_x86.h" />
+    <ClInclude Include="..\..\include\etl\profiles\segger_gcc_stlport.h" />
     <ClInclude Include="..\..\include\etl\profiles\ticc.h" />
+    <ClInclude Include="..\..\include\etl\ratio.h" />
     <ClInclude Include="..\..\include\etl\scheduler.h" />
     <ClInclude Include="..\..\include\etl\smallest_generator.h" />
     <ClInclude Include="..\..\include\etl\queue_spsc_atomic.h" />
diff --git a/test/vs2017/etl.vcxproj.filters b/test/vs2017/etl.vcxproj.filters
index d8a39e36..78786739 100644
--- a/test/vs2017/etl.vcxproj.filters
+++ b/test/vs2017/etl.vcxproj.filters
@@ -627,6 +627,12 @@
     <ClInclude Include="..\..\..\unittest-cpp\UnitTest++\AssertException.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\etl\ratio.h">
+      <Filter>ETL\Maths</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\include\etl\profiles\segger_gcc_stlport.h">
+      <Filter>ETL\Profiles</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\main.cpp">