From 33d0c44910860e0522bd56a0f8637a69e0c4a456 Mon Sep 17 00:00:00 2001
From: Kenneth Graunke <kenneth@whitecape.org>
Date: Fri, 7 Jan 2011 14:30:14 -0800
Subject: glsl: Autogenerate builtin_functions.cpp as part of the build
 process.

Python is already necessary for other parts of Mesa, so there's no
reason we can't just generate it.  This patch updates both make and
SCons to do so.
---
 src/glsl/SConscript | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

(limited to 'src/glsl/SConscript')

diff --git a/src/glsl/SConscript b/src/glsl/SConscript
index f179721d52..1757605f7c 100644
--- a/src/glsl/SConscript
+++ b/src/glsl/SConscript
@@ -2,6 +2,8 @@ import common
 
 Import('*')
 
+from sys import executable as python_cmd
+
 env = env.Clone()
 
 env.Prepend(CPPPATH = [
@@ -20,7 +22,6 @@ sources = [
     'ast_function.cpp',
     'ast_to_hir.cpp',
     'ast_type.cpp',
-    'builtin_function.cpp',
     'glsl_lexer.cpp',
     'glsl_parser.cpp',
     'glsl_parser_extras.cpp',
@@ -79,9 +80,28 @@ sources = [
     'strtod.c',
 ]
 
+env.Prepend(LIBS = ['talloc'])
+env.Append(CPPPATH = ['#/src/glsl'])
+
+builtin_compiler = env.Program(
+    target = 'builtin_compiler',
+    source = sources + ['main.cpp', 'builtin_stubs.cpp',
+                        '#src/mesa/program/hash_table.c',
+                        '#src/mesa/program/symbol_table.c'],
+)
+
+env.CodeGenerate(
+    target = 'builtin_function.cpp',
+    script = 'builtins/tools/generate_builtins.py',
+    source = builtin_compiler,
+    command = python_cmd + ' $SCRIPT $SOURCE > $TARGET'
+)
+
+env.Depends('builtin_function.cpp', ['builtins/tools/generate_builtins.py', 'builtins/tools/texture_builtins.py'] + Glob('builtins/ir/*'))
+
 glsl = env.ConvenienceLibrary(
     target = 'glsl',
-    source = sources,
+    source = sources + [ 'builtin_function.cpp' ],
 )
 
 Export('glsl')
-- 
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