From d1f04504011abfaeda1bda601ab4d022f5f8e9ad Mon Sep 17 00:00:00 2001
From: Jack Andersen <jackoalan@gmail.com>
Date: Sat, 6 Oct 2018 17:38:44 -1000
Subject: [PATCH] Convert to pragma once

---
 hecl/driver/ToolBase.hpp                         | 4 +---
 hecl/driver/ToolCook.hpp                         | 4 +---
 hecl/driver/ToolExtract.hpp                      | 4 +---
 hecl/driver/ToolHelp.hpp                         | 4 +---
 hecl/driver/ToolImage.hpp                        | 4 +---
 hecl/driver/ToolInit.hpp                         | 4 +---
 hecl/driver/ToolPackage.hpp                      | 4 +---
 hecl/driver/ToolSpec.hpp                         | 4 +---
 hecl/extern/athena                               | 2 +-
 hecl/extern/boo                                  | 2 +-
 hecl/include/hecl/Backend/Backend.hpp            | 4 +---
 hecl/include/hecl/Backend/GLSL.hpp               | 4 +---
 hecl/include/hecl/Backend/GX.hpp                 | 4 +---
 hecl/include/hecl/Backend/HLSL.hpp               | 4 +---
 hecl/include/hecl/Backend/Metal.hpp              | 4 +---
 hecl/include/hecl/Backend/ProgrammableCommon.hpp | 4 +---
 hecl/include/hecl/BitVector.hpp                  | 4 +---
 hecl/include/hecl/Blender/Connection.hpp         | 4 +---
 hecl/include/hecl/Blender/Token.hpp              | 4 +---
 hecl/include/hecl/CVar.hpp                       | 4 +---
 hecl/include/hecl/CVarCommons.hpp                | 4 +---
 hecl/include/hecl/CVarManager.hpp                | 4 +---
 hecl/include/hecl/ClientProcess.hpp              | 4 +---
 hecl/include/hecl/Console.hpp                    | 4 +---
 hecl/include/hecl/Database.hpp                   | 4 +---
 hecl/include/hecl/FourCC.hpp                     | 4 +---
 hecl/include/hecl/Frontend.hpp                   | 4 +---
 hecl/include/hecl/HMDLMeta.hpp                   | 4 +---
 hecl/include/hecl/MathExtras.hpp                 | 4 +---
 hecl/include/hecl/MultiProgressPrinter.hpp       | 4 +---
 hecl/include/hecl/Runtime.hpp                    | 4 +---
 hecl/include/hecl/SteamFinder.hpp                | 4 +---
 hecl/include/hecl/SystemChar.hpp                 | 4 +---
 hecl/include/hecl/UniformBufferPool.hpp          | 4 +---
 hecl/include/hecl/VertexBufferPool.hpp           | 4 +---
 hecl/include/hecl/hecl.hpp                       | 4 +---
 hecl/include/hecl/winsupport.hpp                 | 4 +---
 37 files changed, 37 insertions(+), 107 deletions(-)

diff --git a/hecl/driver/ToolBase.hpp b/hecl/driver/ToolBase.hpp
index 605f7a8e3..75f849ccb 100644
--- a/hecl/driver/ToolBase.hpp
+++ b/hecl/driver/ToolBase.hpp
@@ -1,5 +1,4 @@
-#ifndef CTOOL_BASE
-#define CTOOL_BASE
+#pragma once
 
 #include <string>
 #include <vector>
@@ -274,4 +273,3 @@ static hecl::SystemString MakePathArgAbsolute(const hecl::SystemString& arg,
 #endif
 }
 
-#endif // CTOOL_BASE
diff --git a/hecl/driver/ToolCook.hpp b/hecl/driver/ToolCook.hpp
index 91a8ed91a..cd512d0df 100644
--- a/hecl/driver/ToolCook.hpp
+++ b/hecl/driver/ToolCook.hpp
@@ -1,5 +1,4 @@
-#ifndef CTOOL_COOK
-#define CTOOL_COOK
+#pragma once
 
 #include "ToolBase.hpp"
 #include <cstdio>
@@ -180,4 +179,3 @@ public:
     }
 };
 
-#endif // CTOOL_COOK
diff --git a/hecl/driver/ToolExtract.hpp b/hecl/driver/ToolExtract.hpp
index da2a86e03..488b9bbde 100644
--- a/hecl/driver/ToolExtract.hpp
+++ b/hecl/driver/ToolExtract.hpp
@@ -1,5 +1,4 @@
-#ifndef CTOOL_EXTRACT
-#define CTOOL_EXTRACT
+#pragma once
 
 #include "ToolBase.hpp"
 #include <cstdio>
@@ -184,4 +183,3 @@ public:
     }
 };
 
-#endif // CTOOL_EXTRACT
diff --git a/hecl/driver/ToolHelp.hpp b/hecl/driver/ToolHelp.hpp
index 1e957eab8..97d494118 100644
--- a/hecl/driver/ToolHelp.hpp
+++ b/hecl/driver/ToolHelp.hpp
@@ -1,5 +1,4 @@
-#ifndef CTOOL_HELP
-#define CTOOL_HELP
+#pragma once
 
 #include "ToolBase.hpp"
 #include <cstdio>
@@ -91,4 +90,3 @@ public:
     }
 };
 
-#endif // CTOOL_HELP
diff --git a/hecl/driver/ToolImage.hpp b/hecl/driver/ToolImage.hpp
index 09a2139c3..15eb97d45 100644
--- a/hecl/driver/ToolImage.hpp
+++ b/hecl/driver/ToolImage.hpp
@@ -1,5 +1,4 @@
-#ifndef CTOOL_IMAGE
-#define CTOOL_IMAGE
+#pragma once
 
 #if HECL_HAS_NOD
 
@@ -156,4 +155,3 @@ public:
 
 #endif
 
-#endif // CTOOL_IMAGE
diff --git a/hecl/driver/ToolInit.hpp b/hecl/driver/ToolInit.hpp
index 87a231a51..9818b06f6 100644
--- a/hecl/driver/ToolInit.hpp
+++ b/hecl/driver/ToolInit.hpp
@@ -1,5 +1,4 @@
-#ifndef CTOOL_INIT
-#define CTOOL_INIT
+#pragma once
 
 #include "ToolBase.hpp"
 #include <cstdio>
@@ -85,4 +84,3 @@ public:
     hecl::SystemString toolName() const {return _S("init");}
 };
 
-#endif // CTOOL_INIT
diff --git a/hecl/driver/ToolPackage.hpp b/hecl/driver/ToolPackage.hpp
index 2c7f93d95..46150d0d9 100644
--- a/hecl/driver/ToolPackage.hpp
+++ b/hecl/driver/ToolPackage.hpp
@@ -1,5 +1,4 @@
-#ifndef CTOOL_PACKAGE
-#define CTOOL_PACKAGE
+#pragma once
 
 #include <vector>
 #include <string>
@@ -215,4 +214,3 @@ public:
     }
 };
 
-#endif // CTOOL_PACKAGE
diff --git a/hecl/driver/ToolSpec.hpp b/hecl/driver/ToolSpec.hpp
index 77930284b..bfc03d40e 100644
--- a/hecl/driver/ToolSpec.hpp
+++ b/hecl/driver/ToolSpec.hpp
@@ -1,5 +1,4 @@
-#ifndef CTOOL_SPEC
-#define CTOOL_SPEC
+#pragma once
 
 #include "ToolBase.hpp"
 #include <cstdio>
@@ -155,4 +154,3 @@ public:
     }
 };
 
-#endif // CTOOL_SPEC
diff --git a/hecl/extern/athena b/hecl/extern/athena
index 5f2611702..0cdfd0ad9 160000
--- a/hecl/extern/athena
+++ b/hecl/extern/athena
@@ -1 +1 @@
-Subproject commit 5f2611702d4989097a850d8a5705184392d8510c
+Subproject commit 0cdfd0ad9f14599a53bb3577ef6481807191616d
diff --git a/hecl/extern/boo b/hecl/extern/boo
index 528b35062..bba2486c1 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 528b350626332d2c584d665b221ea437f9b0c0f6
+Subproject commit bba2486c15498a307eb1c009edba09ec10a10294
diff --git a/hecl/include/hecl/Backend/Backend.hpp b/hecl/include/hecl/Backend/Backend.hpp
index 8f6433798..d0323191a 100644
--- a/hecl/include/hecl/Backend/Backend.hpp
+++ b/hecl/include/hecl/Backend/Backend.hpp
@@ -1,5 +1,4 @@
-#ifndef HECLBACKEND_HPP
-#define HECLBACKEND_HPP
+#pragma once
 
 #include "hecl/Frontend.hpp"
 
@@ -238,4 +237,3 @@ template <> struct hash<hecl::Backend::ShaderTag>
 };
 }
 
-#endif // HECLBACKEND_HPP
diff --git a/hecl/include/hecl/Backend/GLSL.hpp b/hecl/include/hecl/Backend/GLSL.hpp
index 2f911a723..7783e0aec 100644
--- a/hecl/include/hecl/Backend/GLSL.hpp
+++ b/hecl/include/hecl/Backend/GLSL.hpp
@@ -1,5 +1,4 @@
-#ifndef HECLBACKEND_GLSL_HPP
-#define HECLBACKEND_GLSL_HPP
+#pragma once
 
 #include "ProgrammableCommon.hpp"
 
@@ -46,4 +45,3 @@ private:
 
 }
 
-#endif // HECLBACKEND_GLSL_HPP
diff --git a/hecl/include/hecl/Backend/GX.hpp b/hecl/include/hecl/Backend/GX.hpp
index b17aff35d..8f82ca20a 100644
--- a/hecl/include/hecl/Backend/GX.hpp
+++ b/hecl/include/hecl/Backend/GX.hpp
@@ -1,5 +1,4 @@
-#ifndef HECLBACKEND_GX_HPP
-#define HECLBACKEND_GX_HPP
+#pragma once
 
 #include "Backend.hpp"
 #include <athena/DNA.hpp>
@@ -591,4 +590,3 @@ private:
 
 }
 
-#endif // HECLBACKEND_GX_HPP
diff --git a/hecl/include/hecl/Backend/HLSL.hpp b/hecl/include/hecl/Backend/HLSL.hpp
index 39ea3ddc1..f8c65e845 100644
--- a/hecl/include/hecl/Backend/HLSL.hpp
+++ b/hecl/include/hecl/Backend/HLSL.hpp
@@ -1,5 +1,4 @@
-#ifndef HECLBACKEND_HLSL_HPP
-#define HECLBACKEND_HLSL_HPP
+#pragma once
 
 #include "ProgrammableCommon.hpp"
 
@@ -42,4 +41,3 @@ private:
 
 }
 
-#endif // HECLBACKEND_HLSL_HPP
diff --git a/hecl/include/hecl/Backend/Metal.hpp b/hecl/include/hecl/Backend/Metal.hpp
index dd7f9d2d6..49a1a0996 100644
--- a/hecl/include/hecl/Backend/Metal.hpp
+++ b/hecl/include/hecl/Backend/Metal.hpp
@@ -1,5 +1,4 @@
-#ifndef HECLBACKEND_METAL_HPP
-#define HECLBACKEND_METAL_HPP
+#pragma once
 
 #include "ProgrammableCommon.hpp"
 
@@ -44,4 +43,3 @@ private:
 
 }
 
-#endif // HECLBACKEND_METAL_HPP
diff --git a/hecl/include/hecl/Backend/ProgrammableCommon.hpp b/hecl/include/hecl/Backend/ProgrammableCommon.hpp
index 8caa5b74a..a058e6815 100644
--- a/hecl/include/hecl/Backend/ProgrammableCommon.hpp
+++ b/hecl/include/hecl/Backend/ProgrammableCommon.hpp
@@ -1,5 +1,4 @@
-#ifndef HECLBACKEND_PROGCOMMON_HPP
-#define HECLBACKEND_PROGCOMMON_HPP
+#pragma once
 
 #include "Backend.hpp"
 #include "hecl/Runtime.hpp"
@@ -136,4 +135,3 @@ private:
 
 }
 
-#endif // HECLBACKEND_PROGCOMMON_HPP
diff --git a/hecl/include/hecl/BitVector.hpp b/hecl/include/hecl/BitVector.hpp
index 915fd9046..d0ac5ff90 100644
--- a/hecl/include/hecl/BitVector.hpp
+++ b/hecl/include/hecl/BitVector.hpp
@@ -11,8 +11,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef HECL_LLVM_ADT_BITVECTOR_H
-#define HECL_LLVM_ADT_BITVECTOR_H
+#pragma once
 
 #include "MathExtras.hpp"
 #include <algorithm>
@@ -615,4 +614,3 @@ namespace std {
   }
 } // end namespace std
 
-#endif // LLVM_ADT_BITVECTOR_H
diff --git a/hecl/include/hecl/Blender/Connection.hpp b/hecl/include/hecl/Blender/Connection.hpp
index ea761fd88..48345a32f 100644
--- a/hecl/include/hecl/Blender/Connection.hpp
+++ b/hecl/include/hecl/Blender/Connection.hpp
@@ -1,5 +1,4 @@
-#ifndef BLENDERCONNECTION_HPP
-#define BLENDERCONNECTION_HPP
+#pragma once
 
 #if _WIN32
 #ifndef WIN32_LEAN_AND_MEAN
@@ -715,4 +714,3 @@ public:
 
 }
 
-#endif // BLENDERCONNECTION_HPP
diff --git a/hecl/include/hecl/Blender/Token.hpp b/hecl/include/hecl/Blender/Token.hpp
index 1ace6b07e..3d6b214fe 100644
--- a/hecl/include/hecl/Blender/Token.hpp
+++ b/hecl/include/hecl/Blender/Token.hpp
@@ -1,5 +1,4 @@
-#ifndef HECL_BLENDERTOKEN_HPP
-#define HECL_BLENDERTOKEN_HPP
+#pragma once
 
 #include <memory>
 
@@ -24,4 +23,3 @@ public:
 
 }
 
-#endif // HECL_BLENDERTOKEN_HPP
diff --git a/hecl/include/hecl/CVar.hpp b/hecl/include/hecl/CVar.hpp
index e778e4d1c..3e7868a3f 100755
--- a/hecl/include/hecl/CVar.hpp
+++ b/hecl/include/hecl/CVar.hpp
@@ -1,5 +1,4 @@
-#ifndef CVAR_HPP
-#define CVAR_HPP
+#pragma once
 
 #include <string>
 #include <functional>
@@ -157,5 +156,4 @@ public:
 };
 
 }
-#endif // CVAR_HPP
 
diff --git a/hecl/include/hecl/CVarCommons.hpp b/hecl/include/hecl/CVarCommons.hpp
index 6f5cb8685..c631181bd 100644
--- a/hecl/include/hecl/CVarCommons.hpp
+++ b/hecl/include/hecl/CVarCommons.hpp
@@ -1,5 +1,4 @@
-#ifndef CVARCOMMONS_HPP
-#define CVARCOMMONS_HPP
+#pragma once
 
 #include "CVarManager.hpp"
 
@@ -91,4 +90,3 @@ struct CVarCommons
 
 }
 
-#endif // CVARCOMMONS_HPP
diff --git a/hecl/include/hecl/CVarManager.hpp b/hecl/include/hecl/CVarManager.hpp
index 8f2714cee..1576b2ad1 100755
--- a/hecl/include/hecl/CVarManager.hpp
+++ b/hecl/include/hecl/CVarManager.hpp
@@ -1,5 +1,4 @@
-#ifndef CVARMANAGER_HPP
-#define CVARMANAGER_HPP
+#pragma once
 
 #include <unordered_map>
 #include <vector>
@@ -89,4 +88,3 @@ private:
 
 }
 
-#endif // CVARMANAGER_HPP
diff --git a/hecl/include/hecl/ClientProcess.hpp b/hecl/include/hecl/ClientProcess.hpp
index 83bdfbe76..7a05fde3f 100644
--- a/hecl/include/hecl/ClientProcess.hpp
+++ b/hecl/include/hecl/ClientProcess.hpp
@@ -1,5 +1,4 @@
-#ifndef HECL_CLIENT_PROCESS_HPP
-#define HECL_CLIENT_PROCESS_HPP
+#pragma once
 
 #include "hecl.hpp"
 #include "Database.hpp"
@@ -118,4 +117,3 @@ public:
 
 }
 
-#endif // HECL_CLIENT_PROCESS_HPP
diff --git a/hecl/include/hecl/Console.hpp b/hecl/include/hecl/Console.hpp
index 8f0676368..8ee0b0109 100644
--- a/hecl/include/hecl/Console.hpp
+++ b/hecl/include/hecl/Console.hpp
@@ -1,5 +1,4 @@
-#ifndef __URDE_CONSOLE_HPP__
-#define __URDE_CONSOLE_HPP__
+#pragma once
 
 #include <string>
 #include <unordered_map>
@@ -113,4 +112,3 @@ public:
 };
 }
 
-#endif // __URDE_CONSOLE_HPP__
diff --git a/hecl/include/hecl/Database.hpp b/hecl/include/hecl/Database.hpp
index d06568571..739f586ef 100644
--- a/hecl/include/hecl/Database.hpp
+++ b/hecl/include/hecl/Database.hpp
@@ -1,5 +1,4 @@
-#ifndef HECLDATABASE_HPP
-#define HECLDATABASE_HPP
+#pragma once
 
 #include <iterator>
 #include <string>
@@ -481,4 +480,3 @@ public:
 }
 }
 
-#endif // HECLDATABASE_HPP
diff --git a/hecl/include/hecl/FourCC.hpp b/hecl/include/hecl/FourCC.hpp
index 30916de52..bedaf9f9b 100644
--- a/hecl/include/hecl/FourCC.hpp
+++ b/hecl/include/hecl/FourCC.hpp
@@ -1,5 +1,4 @@
-#ifndef HECL_FOURCC_HPP
-#define HECL_FOURCC_HPP
+#pragma once
 
 #include <cstdint>
 #include <cstddef>
@@ -59,4 +58,3 @@ template <> struct hash<hecl::FourCC>
 };
 }
 
-#endif // HECL_FOURCC_HPP
diff --git a/hecl/include/hecl/Frontend.hpp b/hecl/include/hecl/Frontend.hpp
index 8ab51f0ba..0748281be 100644
--- a/hecl/include/hecl/Frontend.hpp
+++ b/hecl/include/hecl/Frontend.hpp
@@ -1,5 +1,4 @@
-#ifndef HECLFRONTEND_HPP
-#define HECLFRONTEND_HPP
+#pragma once
 
 #include <string>
 #include <vector>
@@ -378,4 +377,3 @@ public:
 
 }
 
-#endif // HECLFRONTEND_HPP
diff --git a/hecl/include/hecl/HMDLMeta.hpp b/hecl/include/hecl/HMDLMeta.hpp
index 35fe22bd4..14c509de7 100644
--- a/hecl/include/hecl/HMDLMeta.hpp
+++ b/hecl/include/hecl/HMDLMeta.hpp
@@ -1,5 +1,4 @@
-#ifndef HMDLMETA_HPP
-#define HMDLMETA_HPP
+#pragma once
 
 #include "hecl/hecl.hpp"
 #include "athena/DNA.hpp"
@@ -31,4 +30,3 @@ struct HMDLMeta : athena::io::DNA<athena::Big>
 
 }
 
-#endif // HMDLMETA_HPP
diff --git a/hecl/include/hecl/MathExtras.hpp b/hecl/include/hecl/MathExtras.hpp
index 9d02e59af..fb15e54a2 100644
--- a/hecl/include/hecl/MathExtras.hpp
+++ b/hecl/include/hecl/MathExtras.hpp
@@ -11,8 +11,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef HECL_LLVM_SUPPORT_MATHEXTRAS_H
-#define HECL_LLVM_SUPPORT_MATHEXTRAS_H
+#pragma once
 
 /// \macro LLVM_GNUC_PREREQ
 /// \brief Extend the default __GNUC_PREREQ even if glibc's features.h isn't
@@ -854,4 +853,3 @@ extern const float huge_valf;
 } // End llvm namespace
 } // End hecl namespace
 
-#endif
diff --git a/hecl/include/hecl/MultiProgressPrinter.hpp b/hecl/include/hecl/MultiProgressPrinter.hpp
index cb4426361..fbcc645cc 100644
--- a/hecl/include/hecl/MultiProgressPrinter.hpp
+++ b/hecl/include/hecl/MultiProgressPrinter.hpp
@@ -1,5 +1,4 @@
-#ifndef HECLMULTIPROGRESSPRINTER_HPP
-#define HECLMULTIPROGRESSPRINTER_HPP
+#pragma once
 
 #include "hecl.hpp"
 #include <thread>
@@ -58,4 +57,3 @@ public:
 
 }
 
-#endif // HECLMULTIPROGRESSPRINTER_HPP
diff --git a/hecl/include/hecl/Runtime.hpp b/hecl/include/hecl/Runtime.hpp
index fadb4628a..8685ca88e 100644
--- a/hecl/include/hecl/Runtime.hpp
+++ b/hecl/include/hecl/Runtime.hpp
@@ -1,5 +1,4 @@
-#ifndef HECLRUNTIME_HPP
-#define HECLRUNTIME_HPP
+#pragma once
 
 #include "hecl.hpp"
 #include "boo/graphicsdev/IGraphicsDataFactory.hpp"
@@ -56,4 +55,3 @@ struct HMDLData
 }
 }
 
-#endif // HECLRUNTIME_HPP
diff --git a/hecl/include/hecl/SteamFinder.hpp b/hecl/include/hecl/SteamFinder.hpp
index dc93765dd..e5bf517e3 100644
--- a/hecl/include/hecl/SteamFinder.hpp
+++ b/hecl/include/hecl/SteamFinder.hpp
@@ -1,5 +1,4 @@
-#ifndef _HECL_STEAMFINDER_H_
-#define _HECL_STEAMFINDER_H_
+#pragma once
 
 #include "hecl/SystemChar.hpp"
 
@@ -11,4 +10,3 @@ hecl::SystemString FindCommonSteamApp(const hecl::SystemChar* name);
 }
 
 
-#endif // _HECL_STEAMFINDER_H_
diff --git a/hecl/include/hecl/SystemChar.hpp b/hecl/include/hecl/SystemChar.hpp
index 939e7b9e9..465f810cc 100644
--- a/hecl/include/hecl/SystemChar.hpp
+++ b/hecl/include/hecl/SystemChar.hpp
@@ -1,5 +1,4 @@
-#ifndef SYSTEMCHAR_HPP
-#define SYSTEMCHAR_HPP
+#pragma once
 
 #ifndef _WIN32
 #include <cstdlib>
@@ -62,4 +61,3 @@ typedef struct stat Sstat;
 
 }
 
-#endif
diff --git a/hecl/include/hecl/UniformBufferPool.hpp b/hecl/include/hecl/UniformBufferPool.hpp
index 6a79dc62d..9c2edb448 100644
--- a/hecl/include/hecl/UniformBufferPool.hpp
+++ b/hecl/include/hecl/UniformBufferPool.hpp
@@ -1,5 +1,4 @@
-#ifndef HECL_UNIFORMBUFFERPOOL_HPP
-#define HECL_UNIFORMBUFFERPOOL_HPP
+#pragma once
 
 #include <boo/boo.hpp>
 #include <vector>
@@ -204,4 +203,3 @@ public:
 
 }
 
-#endif // HECL_UNIFORMBUFFERPOOL_HPP
diff --git a/hecl/include/hecl/VertexBufferPool.hpp b/hecl/include/hecl/VertexBufferPool.hpp
index 082c09b83..cd914085f 100644
--- a/hecl/include/hecl/VertexBufferPool.hpp
+++ b/hecl/include/hecl/VertexBufferPool.hpp
@@ -1,5 +1,4 @@
-#ifndef HECL_VERTEXBUFFERPOOL_HPP
-#define HECL_VERTEXBUFFERPOOL_HPP
+#pragma once
 
 #include <boo/boo.hpp>
 #include <vector>
@@ -208,4 +207,3 @@ public:
 
 }
 
-#endif // HECL_VERTEXBUFFERPOOL_HPP
diff --git a/hecl/include/hecl/hecl.hpp b/hecl/include/hecl/hecl.hpp
index 568573ae4..df4ef2792 100644
--- a/hecl/include/hecl/hecl.hpp
+++ b/hecl/include/hecl/hecl.hpp
@@ -1,5 +1,4 @@
-#ifndef HECL_HPP
-#define HECL_HPP
+#pragma once
 
 #ifndef _WIN32
 #include <cstdlib>
@@ -1468,4 +1467,3 @@ template <> struct hash<hecl::Hash>
 };
 }
 
-#endif // HECL_HPP
diff --git a/hecl/include/hecl/winsupport.hpp b/hecl/include/hecl/winsupport.hpp
index 92e2352dc..8715cd99e 100644
--- a/hecl/include/hecl/winsupport.hpp
+++ b/hecl/include/hecl/winsupport.hpp
@@ -1,5 +1,4 @@
-#ifndef _HECL_WINSUPPORT_H_
-#define _HECL_WINSUPPORT_H_
+#pragma once
 
 #ifndef WIN32_LEAN_AND_MEAN
 #define WIN32_LEAN_AND_MEAN 1
@@ -12,4 +11,3 @@
 void* memmem(const void *haystack, size_t hlen, const void *needle, size_t nlen);
 int asprintf(char** buf, const char* format, ...);
 
-#endif // _HECL_WINSUPPORT_H_