ir_to_mesa: Move some things outside the 'extern "C"' blocks

Having a few of these includes or forward declarations inside the
'extern "C"' block can cause problems later.  Specifically, it
prevents C++ linkage functions from being added to ir_to_mesa.h and
makes G++ angry if 'struct foo' is seen both inside and outside an
'extern "C"'.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/glsl/ir_clone.cpp

@@ -25,9 +25,7 @@
 #include "main/compiler.h"
 #include "ir.h"
 #include "glsl_types.h"
-extern "C" {
 #include "program/hash_table.h"
-}
 
 /**
  * Duplicate an IR variable

src/glsl/ir_print_visitor.cpp

@@ -24,10 +24,7 @@
 #include "ir_print_visitor.h"
 #include "glsl_types.h"
 #include "glsl_parser_extras.h"
-
-extern "C" {
 #include "program/hash_table.h"
-}
 
 static void print_type(const glsl_type *t);
 

src/glsl/ir_set_program_inouts.cpp

@@ -34,10 +34,8 @@
  * from the GLSL IR.
  */
 
-extern "C" {
 #include "main/core.h" /* for struct gl_program */
 #include "program/hash_table.h"
-}
 #include "ir.h"
 #include "ir_visitor.h"
 #include "glsl_types.h"

src/mesa/program/ir_to_mesa.cpp

@@ -41,12 +41,13 @@
 #include "ir_optimization.h"
 #include "ast.h"
 
-extern "C" {
 #include "main/mtypes.h"
-#include "main/shaderapi.h"
 #include "main/shaderobj.h"
-#include "main/uniforms.h"
 #include "program/hash_table.h"
+
+extern "C" {
+#include "main/shaderapi.h"
+#include "main/uniforms.h"
 #include "program/prog_instruction.h"
 #include "program/prog_optimize.h"
 #include "program/prog_print.h"

src/mesa/program/ir_to_mesa.h

@@ -21,16 +21,16 @@
  * DEALINGS IN THE SOFTWARE.
  */
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 #include "main/glheader.h"
 
 struct gl_context;
 struct gl_shader;
 struct gl_shader_program;
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 void _mesa_glsl_compile_shader(struct gl_context *ctx, struct gl_shader *sh);
 void _mesa_glsl_link_shader(struct gl_context *ctx, struct gl_shader_program *prog);
 GLboolean _mesa_ir_compile_shader(struct gl_context *ctx, struct gl_shader *shader);

src/mesa/state_tracker/st_glsl_to_tgsi.cpp

@@ -42,12 +42,13 @@
 #include "ir_optimization.h"
 #include "ast.h"
 
-extern "C" {
 #include "main/mtypes.h"
-#include "main/shaderapi.h"
 #include "main/shaderobj.h"
-#include "main/uniforms.h"
 #include "program/hash_table.h"
+
+extern "C" {
+#include "main/shaderapi.h"
+#include "main/uniforms.h"
 #include "program/prog_instruction.h"
 #include "program/prog_optimize.h"
 #include "program/prog_print.h"