diff --git a/CMakeLists.txt b/CMakeLists.txt
index 09cd5477..ae2a19c0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -70,6 +70,9 @@ endif()
 if(WIN32 OR ARM7 OR ARM6)
   set(CMAKE_C_FLAGS_RELEASE "-O2 -DNDEBUG")
   set(CMAKE_CXX_FLAGS_RELEASE "-O2 -DNDEBUG")
+else()
+  set(CMAKE_C_FLAGS_RELEASE "-Ofast -DNDEBUG -Wno-unused-variable")
+  set(CMAKE_CXX_FLAGS_RELEASE "-Ofast -DNDEBUG -Wno-unused-variable")
 endif()
 
 # set this to 0 if per-block checkpoint needs to be disabled
@@ -310,6 +313,9 @@ else()
     # mingw doesn't support LTO (multiple definition errors at link time)
     set(USE_LTO_DEFAULT false)
     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--stack,10485760")
+    if(NOT BUILD_64)
+      add_definitions(-DWINVER=0x0501 -D_WIN32_WINNT=0x0501)
+    endif()
   endif()
   set(C_WARNINGS "-Waggregate-return -Wnested-externs -Wold-style-definition -Wstrict-prototypes")
   set(CXX_WARNINGS "-Wno-reorder -Wno-missing-field-initializers")
@@ -340,8 +346,8 @@ else()
 
   if(ARM7)
     message(STATUS "Setting ARM7 C and C++ flags")
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O2 -mcpu=cortex-a7 -mfloat-abi=hard -mfpu=vfpv4 -funsafe-math-optimizations -mtune=cortex-a7")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O2 -mcpu=cortex-a7 -mfloat-abi=hard -mfpu=vfpv4 -funsafe-math-optimizations -mtune=cortex-a7")
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O2 -mfloat-abi=hard")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O2 -mfloat-abi=hard")
   endif()
 
   if(APPLE)
@@ -353,8 +359,6 @@ else()
     set(DEBUG_FLAGS "-g3 -O0")
   endif()
 
-  set(RELEASE_FLAGS "-Ofast -DNDEBUG -Wno-unused-variable")
-
   if(NOT DEFINED USE_LTO_DEFAULT)
     set(USE_LTO_DEFAULT true)
   endif()
diff --git a/contrib/epee/include/misc_log_ex.h b/contrib/epee/include/misc_log_ex.h
index b4ba4b7e..d1451ff1 100644
--- a/contrib/epee/include/misc_log_ex.h
+++ b/contrib/epee/include/misc_log_ex.h
@@ -419,7 +419,7 @@ namespace log_space
       std::string buf(buffer, buffer_len);
       for(size_t i = 0; i!= buf.size(); i++)
       {
-        if(buf[i] == 7 || buf[i] == -107)
+        if(buf[i] == 7 || (buf[i]&0xff) == 0x95)
           buf[i] = '^';
       }
 
diff --git a/contrib/epee/include/net/abstract_tcp_server2.inl b/contrib/epee/include/net/abstract_tcp_server2.inl
index 51c6f350..5bf65d7f 100644
--- a/contrib/epee/include/net/abstract_tcp_server2.inl
+++ b/contrib/epee/include/net/abstract_tcp_server2.inl
@@ -160,13 +160,16 @@ PRAGMA_WARNING_DISABLE_VS(4355)
         boost::bind(&connection<t_protocol_handler>::handle_read, self,
           boost::asio::placeholders::error,
           boost::asio::placeholders::bytes_transferred)));
-          
+#if !defined(_WIN32) || !defined(__i686)
+	// not supported before Windows7, too lazy for runtime check
+	// Just exclude for 32bit windows builds
 	//set ToS flag
 	int tos = get_tos_flag();
 	boost::asio::detail::socket_option::integer< IPPROTO_IP, IP_TOS >
 	optionTos( tos );
     socket_.set_option( optionTos );
 	//_dbg1("Set ToS flag to " << tos);
+#endif
 	
 	boost::asio::ip::tcp::no_delay noDelayOption(false);
 	socket_.set_option(noDelayOption);
diff --git a/external/miniupnpc/CMakeLists.txt b/external/miniupnpc/CMakeLists.txt
index 40aa0c83..1e7645a9 100644
--- a/external/miniupnpc/CMakeLists.txt
+++ b/external/miniupnpc/CMakeLists.txt
@@ -4,8 +4,8 @@ project (miniupnpc C)
 set (MINIUPNPC_VERSION 1.9)
 set (MINIUPNPC_API_VERSION 15)
 
-if (0)
-#[[ - we comment out this block as we don't support these other build types
+# - we comment out this block as we don't support these other build types
+if(0)
 if (NOT CMAKE_BUILD_TYPE)
   if (WIN32)
     set (DEFAULT_BUILD_TYPE MinSizeRel)
@@ -16,8 +16,7 @@ if (NOT CMAKE_BUILD_TYPE)
         "Choose the type of build, options are: Debug Release RelWithDebInfo MinSizeRel."
         FORCE)
 endif()
-#]]
-endif (0)
+endif()
 
 option (UPNPC_BUILD_STATIC "Build static library" TRUE)
 option (UPNPC_BUILD_SHARED "Build shared library" FALSE)
@@ -43,8 +42,8 @@ if (CMAKE_SYSTEM_NAME STREQUAL "Darwin")
   add_definitions (-D_DARWIN_C_SOURCE)
 endif ()
 
-if (0)
-#[[ - we comment out this block as we already set flags
+# - we comment out this block as we already set flags
+if(0)
 # Set compiler specific build flags
 if (CMAKE_COMPILER_IS_GNUC)
   # Set our own default flags at first run.
@@ -67,8 +66,7 @@ if (CMAKE_COMPILER_IS_GNUC)
 
   endif (NOT CONFIGURED)
 endif ()
-#]]
-endif (0)
+endif()
 
 configure_file (miniupnpcstrings.h.cmake ${CMAKE_BINARY_DIR}/miniupnpcstrings.h)
 include_directories (${CMAKE_BINARY_DIR})
diff --git a/external/unbound/config.h.cmake.in b/external/unbound/config.h.cmake.in
index 861020ec..9658c869 100644
--- a/external/unbound/config.h.cmake.in
+++ b/external/unbound/config.h.cmake.in
@@ -768,13 +768,6 @@
 #define _LARGEFILE_SOURCE 1
 #endif 
 
-
-
-
-#ifndef UNBOUND_DEBUG
-#  define NDEBUG
-#endif
-
 /** Use small-ldns codebase */
 #define USE_SLDNS 1
 #ifdef HAVE_SSL
diff --git a/src/blocks/CMakeLists.txt b/src/blocks/CMakeLists.txt
index b421d8ba..f65503fb 100644
--- a/src/blocks/CMakeLists.txt
+++ b/src/blocks/CMakeLists.txt
@@ -30,8 +30,8 @@ if(APPLE)
     add_library(blocks STATIC blockexports.c)
     set_target_properties(blocks PROPERTIES LINKER_LANGUAGE C)
 else()
-    add_custom_command(OUTPUT blocks.o COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ld -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/blocks.o blocks.dat)
-    add_custom_command(OUTPUT testnet_blocks.o COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ld -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/testnet_blocks.o testnet_blocks.dat)
+    add_custom_command(OUTPUT blocks.o COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/blocks.o blocks.dat)
+    add_custom_command(OUTPUT testnet_blocks.o COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/testnet_blocks.o testnet_blocks.dat)
     add_library(blocks STATIC blocks.o testnet_blocks.o blockexports.c)
     set_target_properties(blocks PROPERTIES LINKER_LANGUAGE C)
 endif()
diff --git a/src/daemon/CMakeLists.txt b/src/daemon/CMakeLists.txt
index b2676a7c..e456ccba 100644
--- a/src/daemon/CMakeLists.txt
+++ b/src/daemon/CMakeLists.txt
@@ -29,9 +29,9 @@
 set(blocksdat "")
 if(PER_BLOCK_CHECKPOINT)
   if(APPLE)
-    add_custom_command(OUTPUT blocksdat.o COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && touch stub.c && ${CMAKE_C_COMPILER} -o stub.o -c stub.c COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ld -r -sectcreate __DATA __blocks_dat ../blocks/checkpoints.dat -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o stub.o && rm -f stub.*)
+    add_custom_command(OUTPUT blocksdat.o COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && touch stub.c && ${CMAKE_C_COMPILER} -o stub.o -c stub.c COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_LINKER} -r -sectcreate __DATA __blocks_dat ../blocks/checkpoints.dat -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o stub.o && rm -f stub.*)
   else()
-    add_custom_command(OUTPUT blocksdat.o COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && cp ../blocks/checkpoints.dat blocks.dat && ld -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o blocks.dat && rm -f blocks.dat)
+    add_custom_command(OUTPUT blocksdat.o COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && cp ../blocks/checkpoints.dat blocks.dat && ${CMAKE_LINKER} -r -b binary -o ${CMAKE_CURRENT_BINARY_DIR}/blocksdat.o blocks.dat && rm -f blocks.dat)
   endif()
   set(blocksdat "blocksdat.o")
 endif()