diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2d38499d2b0..12eaac641fc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,7 +3,7 @@ project(eosio_cdt)
 
 set(VERSION_MAJOR 1)
 set(VERSION_MINOR 4)
-set(VERSION_PATCH 0)
+set(VERSION_PATCH 1)
 
 if (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
    message(WARNING "CMAKE_INSTALL_PREFIX is set to default path of ${CMAKE_INSTALL_PREFIX}, resetting to ${CMAKE_INSTALL_PREFIX}/eosio.cdt")
diff --git a/InstallClang.txt b/InstallClang.txt
index a2cff9f9068..b52ee3af561 100644
--- a/InstallClang.txt
+++ b/InstallClang.txt
@@ -10,7 +10,7 @@ endmacro( eosio_clang_install )
 macro( eosio_clang_install_and_symlink file symlink )
    set(BINARY_DIR ${CMAKE_BINARY_DIR}/EosioClang-prefix/src/EosioClang-build/bin)
    add_custom_command( TARGET EosioClang POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy ${BINARY_DIR}/${file} ${CMAKE_BINARY_DIR}/bin/ )
-   add_custom_command( TARGET EosioClang POST_BUILD COMMAND ln -sf ${CMAKE_BINARY_DIR}/bin/${file} ${CMAKE_BINARY_DIR}/bin/${symlink} )
+   add_custom_command( TARGET EosioClang POST_BUILD COMMAND cd ${CMAKE_BINARY_DIR}/bin && ln -sf ${file} ${symlink} )
    install(FILES ${BINARY_DIR}/${file}
       DESTINATION ${CMAKE_INSTALL_FULL_BINDIR}
       PERMISSIONS OWNER_READ OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)
@@ -27,7 +27,7 @@ endmacro( eosio_tool_install )
 macro( eosio_tool_install_and_symlink file symlink )
    set(BINARY_DIR ${CMAKE_BINARY_DIR}/EosioTools-prefix/src/EosioTools-build/bin)
    add_custom_command( TARGET EosioTools POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy ${BINARY_DIR}/${file} ${CMAKE_BINARY_DIR}/bin/ )
-   add_custom_command( TARGET EosioTools POST_BUILD COMMAND ln -sf ${CMAKE_BINARY_DIR}/bin/${file} ${CMAKE_BINARY_DIR}/bin/${symlink} )
+   add_custom_command( TARGET EosioTools POST_BUILD COMMAND cd ${CMAKE_BINARY_DIR}/bin && ln -sf ${file} ${symlink} )
    install(FILES ${BINARY_DIR}/${file}
       DESTINATION ${CMAKE_INSTALL_FULL_BINDIR}
       PERMISSIONS OWNER_READ OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)
diff --git a/README.md b/README.md
index 3009b26bb75..2eb9bcbdb44 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # EOSIO.CDT (Contract Development Toolkit)
-## Version : 1.4.0
+## Version : 1.4.1
 
 EOSIO.CDT is a toolchain for WebAssembly (WASM) and set of tools to facilitate contract writing for the EOSIO platform.  In addition to being a general purpose WebAssembly toolchain, [EOSIO](https://github.com/eosio/eos) specific optimizations are available to support building EOSIO smart contracts.  This new toolchain is built around [Clang 7](https://github.com/eosio/llvm), which means that EOSIO.CDT has the most currently available optimizations and analyses from LLVM, but as the WASM target is still considered experimental, some optimizations are not available or incomplete.
 
@@ -22,21 +22,32 @@ $ brew remove eosio.cdt
 ```
 #### Debian Package Install
 ```sh
-$ wget https://github.com/eosio/eosio.cdt/releases/download/v1.4.0/eosio.cdt-1.4.0.x86_64.deb
-$ sudo apt install ./eosio.cdt-1.4.0.x86_64.deb
+$ wget https://github.com/eosio/eosio.cdt/releases/download/v1.4.1/eosio.cdt-1.4.1.x86_64.deb
+$ sudo apt install ./eosio.cdt-1.4.1.x86_64.deb
 ```
 #### Debian Package Uninstall
 ```sh
 $ sudo apt remove eosio.cdt
 ```
 
-#### RPM Package Install
+#### Fedora RPM Package Install
 ```sh
-$ wget https://github.com/eosio/eosio.cdt/releases/download/v1.4.0/eosio.cdt-1.4.0.x86_64-0.x86_64.rpm
-$ sudo yum install ./eosio.cdt-1.4.0.x86_64-0.x86_64.rpm
+$ wget https://github.com/eosio/eosio.cdt/releases/download/v1.4.1/eosio.cdt-fedora-1.4.1.x86_64-0.x86_64.rpm
+$ sudo yum install ./eosio.cdt-fedora-1.4.1.x86_64-0.x86_64.rpm
 ```
 
-#### RPM Package Uninstall
+#### Fedora RPM Package Uninstall
+```sh
+$ sudo yum remove eosio.cdt
+```
+
+#### Centos RPM Package Install
+```sh
+$ wget https://github.com/eosio/eosio.cdt/releases/download/v1.4.1/eosio.cdt-centos-1.4.1.x86_64-0.x86_64.rpm
+$ sudo yum install ./eosio.cdt-centos-1.4.1.x86_64-0.x86_64.rpm
+```
+
+#### Centos RPM Package Uninstall
 ```sh
 $ sudo yum remove eosio.cdt
 ```
diff --git a/libraries/eosiolib/fixed_key.hpp b/libraries/eosiolib/fixed_key.hpp
index 33d5c81ce28..2484fc1a30b 100644
--- a/libraries/eosiolib/fixed_key.hpp
+++ b/libraries/eosiolib/fixed_key.hpp
@@ -63,7 +63,7 @@ namespace eosio {
             const size_t sub_word_shift = 8 * sizeof(Word);
             const size_t num_sub_words = sizeof(word_t) / sizeof(Word);
             auto sub_words_left = num_sub_words;
-            for( Word w_itr = arr_begin; w_itr != arr_end; ++w_itr ) {
+            for( auto w_itr = arr_begin; w_itr != arr_end; ++w_itr ) {
                if( sub_words_left > 1 ) {
                    temp_word |= static_cast<word_t>(*w_itr);
                    temp_word <<= sub_word_shift;
diff --git a/libraries/eosiolib/multi_index.hpp b/libraries/eosiolib/multi_index.hpp
index bfc28df5729..c56f82a0a89 100644
--- a/libraries/eosiolib/multi_index.hpp
+++ b/libraries/eosiolib/multi_index.hpp
@@ -112,7 +112,8 @@ struct secondary_index_db_functions<TYPE> {\
 #define MAKE_TRAITS_FOR_ARITHMETIC_SECONDARY_KEY(TYPE)\
 template<>\
 struct secondary_key_traits<TYPE> {\
-   static constexpr  TYPE lowest() { return std::numeric_limits<TYPE>::lowest(); }\
+   static_assert( std::numeric_limits<TYPE>::is_specialized, "TYPE does not have specialized numeric_limits" );\
+   static constexpr TYPE true_lowest() { return std::numeric_limits<TYPE>::lowest(); }\
 };
 
 namespace _multi_index_detail {
@@ -132,21 +133,27 @@ namespace _multi_index_detail {
    MAKE_TRAITS_FOR_ARITHMETIC_SECONDARY_KEY(uint128_t)
 
    WRAP_SECONDARY_SIMPLE_TYPE(idx_double, double)
-   MAKE_TRAITS_FOR_ARITHMETIC_SECONDARY_KEY(double)
+   template<>
+   struct secondary_key_traits<double> {
+      static constexpr double true_lowest() { return -std::numeric_limits<double>::infinity(); }
+   };
 
    WRAP_SECONDARY_SIMPLE_TYPE(idx_long_double, long double)
-   MAKE_TRAITS_FOR_ARITHMETIC_SECONDARY_KEY(long double)
+   template<>
+   struct secondary_key_traits<long double> {
+      static constexpr long double true_lowest() { return -std::numeric_limits<long double>::infinity(); }
+   };
 
    WRAP_SECONDARY_ARRAY_TYPE(idx256, eosio::key256)
    template<>
    struct secondary_key_traits<eosio::key256> {
-      static constexpr eosio::key256 lowest() { return eosio::key256(); }
+      static constexpr eosio::key256 true_lowest() { return eosio::key256(); }
    };
 
    WRAP_SECONDARY_ARRAY_TYPE(idx256, eosio::fixed_bytes<32>)
    template<>
    struct secondary_key_traits<eosio::fixed_bytes<32>> {
-      static constexpr eosio::fixed_bytes<32> lowest() { return eosio::fixed_bytes<32>(); }
+      static constexpr eosio::fixed_bytes<32> true_lowest() { return eosio::fixed_bytes<32>(); }
    };
 
 }
@@ -419,7 +426,7 @@ class multi_index
 
             const_iterator cbegin()const {
                using namespace _multi_index_detail;
-               return lower_bound( secondary_key_traits<secondary_key_type>::lowest() );
+               return lower_bound( secondary_key_traits<secondary_key_type>::true_lowest() );
             }
             const_iterator begin()const  { return cbegin(); }
 
diff --git a/libraries/eosiolib/name.hpp b/libraries/eosiolib/name.hpp
index 8e1a007affb..e3d9cac2a44 100644
--- a/libraries/eosiolib/name.hpp
+++ b/libraries/eosiolib/name.hpp
@@ -218,5 +218,6 @@ namespace eosio {
  */
 template <typename T, T... Str>
 inline constexpr eosio::name operator""_n() {
-   return eosio::name{std::string_view{eosio::detail::to_const_char_arr<Str...>::value, sizeof...(Str)}};
+   constexpr auto x = eosio::name{std::string_view{eosio::detail::to_const_char_arr<Str...>::value, sizeof...(Str)}};
+   return x;
 }
diff --git a/modules/EosioWasmToolchain.cmake.in b/modules/EosioWasmToolchain.cmake.in
index b60cd9ca4cb..77714be1f32 100644
--- a/modules/EosioWasmToolchain.cmake.in
+++ b/modules/EosioWasmToolchain.cmake.in
@@ -3,12 +3,12 @@ set(CMAKE_SYSTEM_NAME Generic)
 set(CMAKE_CROSSCOMPILING 1)
 set(CMAKE_C_COMPILER_WORKS 1)
 set(CMAKE_CXX_COMPILER_WORKS 1)
-set(CMAKE_CXX_STANDARD 17)
+
 set(EOSIO_CDT_VERSION "@VERSION_MAJOR@.@VERSION_MINOR@.@VERSION_PATCH@")
 set(EOSIO_WASMSDK_VERSION "@VERSION_MAJOR@.@VERSION_MINOR@.@VERSION_PATCH@")
 
-set(CMAKE_C_COMPILER "@CDT_ROOT_DIR@/bin/eosio-cc")
-set(CMAKE_CXX_COMPILER "@CDT_ROOT_DIR@/bin/eosio-cpp")
+set(CMAKE_C_COMPILER "@CDT_ROOT_DIR@/bin/eosio-cc" CACHE PATH "cc" FORCE)
+set(CMAKE_CXX_COMPILER "@CDT_ROOT_DIR@/bin/eosio-cpp" CACHE PATH "cxx" FORCE)
 
 set(CMAKE_C_FLAGS " -O3 ")
 set(CMAKE_CXX_FLAGS " -O3 ")
@@ -37,7 +37,6 @@ include_directories(
 macro(add_contract CONTRACT_NAME TARGET)
    add_executable( ${TARGET}.wasm ${ARGN} )
    target_compile_options( ${TARGET}.wasm PUBLIC -abigen )
-   set_target_properties( ${TARGET}.wasm PROPERTIES LINKER_LANGUAGE C )
    get_target_property(BINOUTPUT ${TARGET}.wasm BINARY_DIR)
    target_compile_options( ${TARGET}.wasm PUBLIC -abigen_output=${BINOUTPUT}/${TARGET}.abi )
    target_compile_options( ${TARGET}.wasm PUBLIC -contract ${CONTRACT_NAME} )
diff --git a/scripts/generate_bottle.sh b/scripts/generate_bottle.sh
index d279f744536..4feac525f94 100644
--- a/scripts/generate_bottle.sh
+++ b/scripts/generate_bottle.sh
@@ -1,6 +1,18 @@
 #! /bin/bash
 
-NAME="${PROJECT}-${VERSION}.high_sierra.bottle.tar.gz"
+VERS=`sw_vers -productVersion | awk '/10\.13\..*/{print $0}'`
+if [[ -z "$VERS" ]];
+then
+   VERS=`sw_vers -productVersion | awk '/10\.14.*/{print $0}'`
+   if [[ -z "$VERS" ]];
+   then
+      echo "Error, unsupported OS X version"
+      exit -1
+   fi
+   MAC_VERSION="mojave"
+else
+   MAC_VERSION="high_sierra"
+fi
 
 mkdir -p ${PROJECT}/${VERSION}/opt/eosio_cdt/lib/cmake
 
@@ -42,7 +54,7 @@ echo "class EosioCdt < Formula
   
    bottle do
       root_url \"https://github.com/eosio/eosio.cdt/releases/download/v${VERSION}\"
-      sha256 \"${hash}\" => :high_sierra
+      sha256 \"${hash}\" => :${MAC_VERSION}
    end
    def install
       raise \"Error, only supporting binary packages at this time\"