5 files changed, 24 insertions, 9 deletions

diff --git a/.gitmodules b/.gitmodules
index d7201387a..54714e5cd 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "externals/inih/inih"]
         path = externals/inih/inih
         url = https://github.com/svn2github/inih
+[submodule "externals/boost"]
+        path = externals/boost
+        url = https://github.com/citra-emu/ext-boost.git
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 05a560404..61d5d524a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,6 +19,14 @@ if (PNG_FOUND)
     add_definitions(-DHAVE_PNG)
 endif ()
 
+find_package(Boost)
+if (Boost_FOUND)
+    include_directories(${Boost_INCLUDE_DIRS})
+else()
+    message(STATUS "Boost not found, falling back to externals")
+    include_directories(externals/boost)
+endif()
+
 # Include bundled CMake modules
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/externals/cmake-modules")
 
diff --git a/externals/boost b/externals/boost
new file mode 160000
+Subproject b060148c08ae87a3a5809c4f48cb26ac667487a
diff --git a/src/common/string_util.cpp b/src/common/string_util.cpp
index 19e162c27..7a8274a91 100644
--- a/src/common/string_util.cpp
+++ b/src/common/string_util.cpp
@@ -2,7 +2,7 @@
 // Licensed under GPLv2
 // Refer to the license.txt file included.
 
-#include <algorithm>
+#include <boost/range/algorithm.hpp>
 
 #include "common/common.h"
 #include "common/string_util.h"
@@ -18,13 +18,13 @@ namespace Common {
 
 /// Make a string lowercase
 std::string ToLower(std::string str) {
-    std::transform(str.begin(), str.end(), str.begin(), ::tolower);
+    boost::transform(str, str.begin(), ::tolower);
     return str;
 }
 
 /// Make a string uppercase
 std::string ToUpper(std::string str) {
-    std::transform(str.begin(), str.end(), str.begin(), ::toupper);
+    boost::transform(str, str.begin(), ::toupper);
     return str;
 }
 
diff --git a/src/video_core/vertex_shader.cpp b/src/video_core/vertex_shader.cpp
index 96625791c..0dff11a0f 100644
--- a/src/video_core/vertex_shader.cpp
+++ b/src/video_core/vertex_shader.cpp
@@ -2,11 +2,16 @@
 // Licensed under GPLv2
 // Refer to the license.txt file included.
 
+#include <boost/range/algorithm.hpp>
+
+#include <common/file_util.h>
+
+#include <core/mem_map.h>
+
+#include "debug_utils/debug_utils.h"
+
 #include "pica.h"
 #include "vertex_shader.h"
-#include "debug_utils/debug_utils.h"
-#include <core/mem_map.h>
-#include <common/file_util.h>
 
 namespace Pica {
 
@@ -238,7 +243,7 @@ OutputVertex RunShader(const InputVertex& input, int num_attributes)
     // Setup input register table
     const auto& attribute_register_map = registers.vs_input_register_map;
     float24 dummy_register;
-    std::fill(&state.input_register_table[0], &state.input_register_table[16], &dummy_register);
+    boost::fill(state.input_register_table, &dummy_register);
     if(num_attributes > 0) state.input_register_table[attribute_register_map.attribute0_register] = &input.attr[0].x;
     if(num_attributes > 1) state.input_register_table[attribute_register_map.attribute1_register] = &input.attr[1].x;
     if(num_attributes > 2) state.input_register_table[attribute_register_map.attribute2_register] = &input.attr[2].x;
@@ -272,8 +277,7 @@ OutputVertex RunShader(const InputVertex& input, int num_attributes)
 
     state.status_registers[0] = false;
     state.status_registers[1] = false;
-    std::fill(state.call_stack, state.call_stack + sizeof(state.call_stack) / sizeof(state.call_stack[0]),
-              VertexShaderState::INVALID_ADDRESS);
+    boost::fill(state.call_stack, VertexShaderState::INVALID_ADDRESS);
     state.call_stack_pointer = &state.call_stack[0];
 
     ProcessShaderCode(state);