From 2fa0b3671549b0c4c1afaef41903fe97074a9d30 Mon Sep 17 00:00:00 2001
From: Zak Strange <zakarystrange@gmail.com>
Date: Wed, 17 Feb 2021 19:36:05 -0800
Subject: [PATCH] Add HMM_STATIC option to statically link instead of extern
 (#127)

Co-authored-by: zak <zak@DESKTOP-V1AQ0IT>
---
 HandmadeMath.h | 37 +++++++++++++++++++++----------------
 1 file changed, 21 insertions(+), 16 deletions(-)

diff --git a/HandmadeMath.h b/HandmadeMath.h
index a33e0ef..426c2bd 100644
--- a/HandmadeMath.h
+++ b/HandmadeMath.h
@@ -165,7 +165,12 @@ extern "C"
 #endif
 
 #define HMM_INLINE static inline
-#define HMM_EXTERN extern
+
+#ifdef HMM_STATIC
+#define HMM_DEF static
+#else
+#define HMM_DEF extern
+#endif
 
 #if !defined(HMM_SINF) || !defined(HMM_COSF) || !defined(HMM_TANF) || \
     !defined(HMM_SQRTF) || !defined(HMM_EXPF) || !defined(HMM_LOGF) || \
@@ -547,7 +552,7 @@ HMM_INLINE float HMM_PREFIX(RSquareRootF)(float Float)
     return(Result);
 }
 
-HMM_EXTERN float HMM_PREFIX(Power)(float Base, int Exponent);
+HMM_DEF float HMM_PREFIX(Power)(float Base, int Exponent);
 
 COVERAGE(HMM_PowerF, 1)
 HMM_INLINE float HMM_PREFIX(PowerF)(float Base, float Exponent)
@@ -1315,7 +1320,7 @@ HMM_INLINE hmm_mat4 HMM_PREFIX(Transpose)(hmm_mat4 Matrix)
     return (Result);
 }
 #else
-HMM_EXTERN hmm_mat4 HMM_PREFIX(Transpose)(hmm_mat4 Matrix);
+HMM_DEF hmm_mat4 HMM_PREFIX(Transpose)(hmm_mat4 Matrix);
 #endif
 
 #ifdef HANDMADE_MATH__USE_SSE
@@ -1334,7 +1339,7 @@ HMM_INLINE hmm_mat4 HMM_PREFIX(AddMat4)(hmm_mat4 Left, hmm_mat4 Right)
     return (Result);
 }
 #else
-HMM_EXTERN hmm_mat4 HMM_PREFIX(AddMat4)(hmm_mat4 Left, hmm_mat4 Right);
+HMM_DEF hmm_mat4 HMM_PREFIX(AddMat4)(hmm_mat4 Left, hmm_mat4 Right);
 #endif
 
 #ifdef HANDMADE_MATH__USE_SSE
@@ -1353,10 +1358,10 @@ HMM_INLINE hmm_mat4 HMM_PREFIX(SubtractMat4)(hmm_mat4 Left, hmm_mat4 Right)
     return (Result);
 }
 #else
-HMM_EXTERN hmm_mat4 HMM_PREFIX(SubtractMat4)(hmm_mat4 Left, hmm_mat4 Right);
+HMM_DEF hmm_mat4 HMM_PREFIX(SubtractMat4)(hmm_mat4 Left, hmm_mat4 Right);
 #endif
 
-HMM_EXTERN hmm_mat4 HMM_PREFIX(MultiplyMat4)(hmm_mat4 Left, hmm_mat4 Right);
+HMM_DEF hmm_mat4 HMM_PREFIX(MultiplyMat4)(hmm_mat4 Left, hmm_mat4 Right);
 
 #ifdef HANDMADE_MATH__USE_SSE
 COVERAGE(HMM_MultiplyMat4f, 1)
@@ -1375,10 +1380,10 @@ HMM_INLINE hmm_mat4 HMM_PREFIX(MultiplyMat4f)(hmm_mat4 Matrix, float Scalar)
     return (Result);
 }
 #else
-HMM_EXTERN hmm_mat4 HMM_PREFIX(MultiplyMat4f)(hmm_mat4 Matrix, float Scalar);
+HMM_DEF hmm_mat4 HMM_PREFIX(MultiplyMat4f)(hmm_mat4 Matrix, float Scalar);
 #endif
 
-HMM_EXTERN hmm_vec4 HMM_PREFIX(MultiplyMat4ByVec4)(hmm_mat4 Matrix, hmm_vec4 Vector);
+HMM_DEF hmm_vec4 HMM_PREFIX(MultiplyMat4ByVec4)(hmm_mat4 Matrix, hmm_vec4 Vector);
 
 #ifdef HANDMADE_MATH__USE_SSE
 COVERAGE(HMM_DivideMat4f, 1)
@@ -1397,7 +1402,7 @@ HMM_INLINE hmm_mat4 HMM_PREFIX(DivideMat4f)(hmm_mat4 Matrix, float Scalar)
     return (Result);
 }
 #else
-HMM_EXTERN hmm_mat4 HMM_PREFIX(DivideMat4f)(hmm_mat4 Matrix, float Scalar);
+HMM_DEF hmm_mat4 HMM_PREFIX(DivideMat4f)(hmm_mat4 Matrix, float Scalar);
 #endif
 
 
@@ -1459,7 +1464,7 @@ HMM_INLINE hmm_mat4 HMM_PREFIX(Translate)(hmm_vec3 Translation)
     return (Result);
 }
 
-HMM_EXTERN hmm_mat4 HMM_PREFIX(Rotate)(float Angle, hmm_vec3 Axis);
+HMM_DEF hmm_mat4 HMM_PREFIX(Rotate)(float Angle, hmm_vec3 Axis);
 
 COVERAGE(HMM_Scale, 1)
 HMM_INLINE hmm_mat4 HMM_PREFIX(Scale)(hmm_vec3 Scale)
@@ -1475,7 +1480,7 @@ HMM_INLINE hmm_mat4 HMM_PREFIX(Scale)(hmm_vec3 Scale)
     return (Result);
 }
 
-HMM_EXTERN hmm_mat4 HMM_PREFIX(LookAt)(hmm_vec3 Eye, hmm_vec3 Center, hmm_vec3 Up);
+HMM_DEF hmm_mat4 HMM_PREFIX(LookAt)(hmm_vec3 Eye, hmm_vec3 Center, hmm_vec3 Up);
 
 
 /*
@@ -1633,7 +1638,7 @@ HMM_INLINE hmm_quaternion HMM_PREFIX(DivideQuaternionF)(hmm_quaternion Left, flo
     return (Result);
 }
 
-HMM_EXTERN hmm_quaternion HMM_PREFIX(InverseQuaternion)(hmm_quaternion Left);
+HMM_DEF hmm_quaternion HMM_PREFIX(InverseQuaternion)(hmm_quaternion Left);
 
 COVERAGE(HMM_DotQuaternion, 1)
 HMM_INLINE float HMM_PREFIX(DotQuaternion)(hmm_quaternion Left, hmm_quaternion Right)
@@ -1693,10 +1698,10 @@ HMM_INLINE hmm_quaternion HMM_PREFIX(NLerp)(hmm_quaternion Left, float Time, hmm
     return (Result);
 }
 
-HMM_EXTERN hmm_quaternion HMM_PREFIX(Slerp)(hmm_quaternion Left, float Time, hmm_quaternion Right);
-HMM_EXTERN hmm_mat4 HMM_PREFIX(QuaternionToMat4)(hmm_quaternion Left);
-HMM_EXTERN hmm_quaternion HMM_PREFIX(Mat4ToQuaternion)(hmm_mat4 Left);
-HMM_EXTERN hmm_quaternion HMM_PREFIX(QuaternionFromAxisAngle)(hmm_vec3 Axis, float AngleOfRotation);
+HMM_DEF hmm_quaternion HMM_PREFIX(Slerp)(hmm_quaternion Left, float Time, hmm_quaternion Right);
+HMM_DEF hmm_mat4 HMM_PREFIX(QuaternionToMat4)(hmm_quaternion Left);
+HMM_DEF hmm_quaternion HMM_PREFIX(Mat4ToQuaternion)(hmm_mat4 Left);
+HMM_DEF hmm_quaternion HMM_PREFIX(QuaternionFromAxisAngle)(hmm_vec3 Axis, float AngleOfRotation);
 
 #ifdef __cplusplus
 }