mesa: put extern "C" in header files

Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>

src/mesa/main/enums.h

@@ -37,6 +37,11 @@
 #define _ENUMS_H_
 
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
 extern const char *_mesa_lookup_enum_by_nr( int nr );
 
 /* Get the name of an enum given that it is a primitive type.  Avoids
@@ -44,4 +49,10 @@ extern const char *_mesa_lookup_enum_by_nr( int nr );
  */
 const char *_mesa_lookup_prim_by_nr( unsigned nr );
 
+
+#ifdef __cplusplus
+}
+#endif
+
+
 #endif

src/mesa/main/samplerobj.h

@@ -27,6 +27,11 @@
 #ifndef SAMPLEROBJ_H
 #define SAMPLEROBJ_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
 struct dd_function_table;
 
 static inline struct gl_sampler_object *
@@ -103,4 +108,8 @@ _mesa_GetSamplerParameterIiv(GLuint sampler, GLenum pname, GLint *params);
 void GLAPIENTRY
 _mesa_GetSamplerParameterIuiv(GLuint sampler, GLenum pname, GLuint *params);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* SAMPLEROBJ_H */

src/mesa/main/texenvprogram.h

@@ -27,9 +27,20 @@
 #define TEXENVPROGRAM_H
 
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
 struct gl_context;
 
 extern struct gl_shader_program *
 _mesa_get_fixed_func_fragment_program(struct gl_context *ctx);
 
+
+#ifdef __cplusplus
+}
+#endif
+
+
 #endif

src/mesa/main/texobj.h

@@ -38,6 +38,11 @@
 #include "samplerobj.h"
 
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
 /**
  * \name Internal functions
  */
@@ -212,4 +217,9 @@ _mesa_InvalidateTexImage(GLuint texture, GLint level);
 /*@}*/
 
 
+#ifdef __cplusplus
+}
+#endif
+
+
 #endif