[Yoga] fix error: templates must have C++ linkage

yoga/YGEnums.h

@@ -10,6 +10,7 @@
 #include "YGMacros.h"
 
 #ifdef __cplusplus
+YG_EXTERN_CXX_BEGIN
 namespace facebook {
 namespace yoga {
 namespace enums {
@@ -27,6 +28,7 @@ constexpr int n() {
 } // namespace enums
 } // namespace yoga
 } // namespace facebook
+YG_EXTERN_C_END
 #endif
 
 #define YG_ENUM_DECL(NAME, ...)                               \
@@ -37,6 +39,7 @@ constexpr int n() {
 #define YG_ENUM_SEQ_DECL(NAME, ...)  \
   YG_ENUM_DECL(NAME, __VA_ARGS__)    \
   YG_EXTERN_C_END                    \
+  YG_EXTERN_CXX_BEGIN                \
   namespace facebook {               \
   namespace yoga {                   \
   namespace enums {                  \
@@ -47,6 +50,7 @@ constexpr int n() {
   }                                  \
   }                                  \
   }                                  \
+  YG_EXTERN_C_END                    \
   YG_EXTERN_C_BEGIN
 #else
 #define YG_ENUM_SEQ_DECL YG_ENUM_DECL

yoga/YGMacros.h

@@ -8,9 +8,11 @@
 #pragma once
 
 #ifdef __cplusplus
+#define YG_EXTERN_CXX_BEGIN extern "C++" {
 #define YG_EXTERN_C_BEGIN extern "C" {
 #define YG_EXTERN_C_END }
 #else
+#define YG_EXTERN_CXX_BEGIN
 #define YG_EXTERN_C_BEGIN
 #define YG_EXTERN_C_END
 #endif

yoga/YGValue.h

@@ -15,8 +15,10 @@
 #define COMPILING_WITH_CLANG_ON_WINDOWS
 #endif
 #if defined(COMPILING_WITH_CLANG_ON_WINDOWS)
+YG_EXTERN_CXX_BEGIN
 #include <limits>
 constexpr float YGUndefined = std::numeric_limits<float>::quiet_NaN();
+YG_EXTERN_C_END
 #else
 YG_EXTERN_C_BEGIN
 
@@ -44,6 +46,7 @@ YG_EXTERN_C_END
 #undef COMPILING_WITH_CLANG_ON_WINDOWS
 
 #ifdef __cplusplus
+YG_EXTERN_CXX_BEGIN
 
 inline bool operator==(const YGValue& lhs, const YGValue& rhs) {
   if (lhs.unit != rhs.unit) {
@@ -92,4 +95,5 @@ inline YGValue operator"" _percent(unsigned long long value) {
 } // namespace yoga
 } // namespace facebook
 
+YG_EXTERN_C_END
 #endif

yoga/Yoga.h

@@ -360,6 +360,7 @@ WIN_EXPORT float YGRoundValueToPixelGrid(
 YG_EXTERN_C_END
 
 #ifdef __cplusplus
+YG_EXTERN_CXX_BEGIN
 
 #include <functional>
 #include <vector>
@@ -371,4 +372,5 @@ void YGTraversePreOrder(
 
 void YGNodeSetChildren(YGNodeRef owner, const std::vector<YGNodeRef>& children);
 
+YG_EXTERN_C_END
 #endif