fix compilation of cold client loader on msys2

helpers/pe_helpers/pe_helpers.hpp

@@ -6,6 +6,7 @@
 
 #include <string>
 #include <string_view>
+#include <cstdint>
 
 namespace pe_helpers
 {

premake5.lua

@@ -345,7 +345,6 @@ filter { "action:vs*", }
         -- source of emittoolversioninfo: https://developercommunity.visualstudio.com/t/add-linker-option-to-strip-rich-stamp-from-exe-hea/740443
         "/NOLOGO", "/emittoolversioninfo:no"
     }
-
 -- GNU make common compiler/linker options
 filter { "action:gmake*", }
     buildoptions  {
@@ -359,11 +358,24 @@ filter { "action:gmake*" , "files:*.cpp or *.cc or *.hpp", }
     buildoptions  {
         "-fno-char8_t", -- GCC gives a warning when a .c file is compiled with this
     }
--- MinGw on Windows cannot compile 'creatwth.cpp' from Detours lib (error: 'DWordMult' was not declared in this scope)
--- because intsafe.h isn't included by default
+-- MinGw on Windows common compiler/linker options
 filter { "system:windows", "action:gmake*", }
     buildoptions  {
-        "-include intsafe.h"
+        -- MinGw on Windows cannot compile 'creatwth.cpp' from Detours lib (error: 'DWordMult' was not declared in this scope)
+        -- because intsafe.h isn't included by default
+        "-include intsafe.h",
+    }
+    -- source: https://gcc.gnu.org/onlinedocs/gcc/Cygwin-and-MinGW-Options.html
+    linkoptions {
+        -- MinGW on Windows cannot link wWinMain by default
+        "-municode",
+        -- from docs: "specifies that the typical Microsoft Windows predefined macros are to be set in the pre-processor,
+        --             but does not influence the choice of runtime library/startup code"
+        -- optional really
+       '-mwin32',
+    }
+filter { "system:windows", "action:gmake*", "platforms:x64" }
+    buildoptions  {
     }
 filter {} -- reset the filter and remove all active keywords
 

tools/steamclient_loader/win/ColdClientLoader.cpp

@@ -15,6 +15,7 @@
 #include <filesystem>
 #include <set>
 #include <thread>
+#include <algorithm>
 
 
 static std::wstring IniFile{};
@@ -60,7 +61,7 @@ std::wstring get_ini_value(LPCWSTR section, LPCWSTR key, LPCWSTR default_val = N
 static std::vector<uint8_t> get_pe_header(const std::wstring &filepath)
 {
     try {
-        std::ifstream file(filepath, std::ios::binary);
+        std::ifstream file(std::filesystem::path(filepath), std::ios::binary);
         if (!file.is_open()) throw;
 
         file.seekg(0, std::ios::beg);