compiler/link: add linker_util.h, move linker_error/warning to it

Linker utilities common to the GLSL IR and NIR linker (the latter to
be used for ARB_gl_spirv).

We need to move it to a new header as the NIR linker doesn't need to
know about ir_variable, and others, included at linker.h.

v2: move from src/compiler to src/compiler/glsl (Timothy Arceri)

Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

src/compiler/Makefile.sources

@@ -71,6 +71,7 @@ LIBGLSL_FILES = \
 	glsl/ir_visitor.h \
 	glsl/linker.cpp \
 	glsl/linker.h \
+	glsl/linker_util.h \
 	glsl/link_atomics.cpp \
 	glsl/link_functions.cpp \
 	glsl/link_interface_blocks.cpp \

src/compiler/glsl/link_uniform_block_active_visitor.cpp

@@ -23,6 +23,7 @@
 
 #include "link_uniform_block_active_visitor.h"
 #include "program.h"
+#include "linker_util.h"
 
 static link_uniform_block_active *
 process_block(void *mem_ctx, struct hash_table *ht, ir_variable *var)

src/compiler/glsl/linker.h

@@ -25,6 +25,8 @@
 #ifndef GLSL_LINKER_H
 #define GLSL_LINKER_H
 
+#include "linker_util.h"
+
 struct gl_shader_program;
 struct gl_shader;
 struct gl_linked_shader;
@@ -192,12 +194,6 @@ private:
                   const glsl_struct_field *named_ifc_member);
 };
 
-void
-linker_error(gl_shader_program *prog, const char *fmt, ...);
-
-void
-linker_warning(gl_shader_program *prog, const char *fmt, ...);
-
 /**
  * Sometimes there are empty slots left over in UniformRemapTable after we
  * allocate slots to explicit locations. This struct represents a single

src/compiler/glsl/linker_util.h

@@ -0,0 +1,43 @@
+/*
+ * Copyright © 2018 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef GLSL_LINKER_UTIL_H
+#define GLSL_LINKER_UTIL_H
+
+struct gl_shader_program;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void
+linker_error(struct gl_shader_program *prog, const char *fmt, ...);
+
+void
+linker_warning(struct gl_shader_program *prog, const char *fmt, ...);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GLSL_LINKER_UTIL_H */

src/compiler/glsl/meson.build

@@ -112,6 +112,7 @@ files_libglsl = files(
   'ir_visitor.h',
   'linker.cpp',
   'linker.h',
+  'linker_util.h',
   'link_atomics.cpp',
   'link_functions.cpp',
   'link_interface_blocks.cpp',

src/compiler/glsl/program.h

@@ -48,14 +48,6 @@ extern void
 build_program_resource_list(struct gl_context *ctx,
                             struct gl_shader_program *shProg);
 
-extern void
-linker_error(struct gl_shader_program *prog, const char *fmt, ...)
-   PRINTFLIKE(2, 3);
-
-extern void
-linker_warning(struct gl_shader_program *prog, const char *fmt, ...)
-   PRINTFLIKE(2, 3);
-
 extern long
 parse_program_resource_name(const GLchar *name,
                             const GLchar **out_base_name_end);