From dea98eb792b5a0637ff2067d9bfe2f666f01423e Mon Sep 17 00:00:00 2001
From: Alan Hourihane <alanh@vmware.com>
Date: Tue, 26 Jan 2010 20:58:11 +0000
Subject: [PATCH] support an 'embedded' platform target which turns off most
 parts of the build.

---
 SConstruct             | 13 ++++++--
 common.py              |  3 +-
 progs/SConscript       | 71 +++++++++++++++++++++---------------------
 src/SConscript         |  5 +--
 src/gallium/SConscript |  7 +++--
 5 files changed, 54 insertions(+), 45 deletions(-)

diff --git a/SConstruct b/SConstruct
index 3a40244d887..3b8a9e0341e 100644
--- a/SConstruct
+++ b/SConstruct
@@ -38,6 +38,9 @@ if common.default_platform in ('linux', 'freebsd', 'darwin'):
 elif common.default_platform in ('winddk',):
 	default_drivers = 'softpipe,svga,i915,i965,trace,identity'
 	default_winsys = 'all'
+elif common.default_platform in ('embedded',):
+	default_drivers = 'softpipe,llvmpipe'
+	default_winsys = 'xlib'
 else:
 	default_drivers = 'all'
 	default_winsys = 'all'
@@ -83,7 +86,7 @@ platform = env['platform']
 # derived options
 x86 = machine == 'x86'
 ppc = machine == 'ppc'
-gcc = platform in ('linux', 'freebsd', 'darwin')
+gcc = platform in ('linux', 'freebsd', 'darwin', 'embedded')
 msvc = platform in ('windows', 'winddk')
 
 Export([
@@ -114,7 +117,7 @@ if env['msvc']:
 
 
 # Posix
-if platform in ('posix', 'linux', 'freebsd', 'darwin'):
+if platform in ('posix', 'linux', 'freebsd', 'darwin', 'embedded'):
 	env.Append(CPPDEFINES = [
 		'_POSIX_SOURCE',
 		('_POSIX_C_SOURCE', '199309L'), 
@@ -132,9 +135,13 @@ if platform in ('posix', 'linux', 'freebsd', 'darwin'):
 	env.Append(LIBS = [
 		'm',
 		'pthread',
-		'expat',
 		'dl',
 	])
+	if platform != 'embedded':
+		env.Append(LIBS = [
+			'expat',
+		])
+		
 
 
 # DRI
diff --git a/common.py b/common.py
index 101fc558f40..928a4496f78 100644
--- a/common.py
+++ b/common.py
@@ -59,9 +59,8 @@ def AddOptions(opts):
 	opts.Add(EnumOption('machine', 'use machine-specific assembly code', default_machine,
 											 allowed_values=('generic', 'ppc', 'x86', 'x86_64')))
 	opts.Add(EnumOption('platform', 'target platform', default_platform,
-											 allowed_values=('linux', 'cell', 'windows', 'winddk', 'wince', 'darwin')))
+											 allowed_values=('linux', 'cell', 'windows', 'winddk', 'wince', 'darwin', 'embedded')))
 	opts.Add(EnumOption('toolchain', 'compiler toolchain', 'default',
 											 allowed_values=('default', 'crossmingw', 'winsdk', 'winddk')))
 	opts.Add(BoolOption('llvm', 'use LLVM', 'no'))
 	opts.Add(BoolOption('dri', 'build DRI drivers', default_dri))
-
diff --git a/progs/SConscript b/progs/SConscript
index 3b180d00bc2..66a1745271d 100644
--- a/progs/SConscript
+++ b/progs/SConscript
@@ -15,38 +15,39 @@ if progs_env['platform'] == 'windows':
         'gdi32',
     ])
 
-# OpenGL
-if progs_env['platform'] == 'windows':
-    progs_env.Prepend(LIBS = ['glu32', 'opengl32'])
-else:
-    progs_env.Prepend(LIBS = ['GLU', 'GL'])
-
-# Glut
-progs_env.Prepend(LIBS = [glut])
-
-# GLEW
-progs_env.Prepend(LIBS = [glew])
-
-progs_env.Prepend(CPPPATH = [
-	'#progs/util',
-])
-
-progs_env.Prepend(LIBS = [
-	util,
-])
-
-Export('progs_env')
-
-SConscript([
-    'demos/SConscript',
-    'glsl/SConscript',
-    'redbook/SConscript',
-    'samples/SConscript',
-    'tests/SConscript',
-    'trivial/SConscript',
-    'vp/SConscript',
-    'vpglsl/SConscript',
-    'fp/SConscript',
-    'wgl/SConscript',
-    'perf/SConscript',
-])
+if platform != 'embedded':
+	# OpenGL
+	if progs_env['platform'] == 'windows':
+   		progs_env.Prepend(LIBS = ['glu32', 'opengl32'])
+	else:
+		progs_env.Prepend(LIBS = ['GLU', 'GL'])
+
+	# Glut
+	progs_env.Prepend(LIBS = [glut])
+
+	# GLEW
+	progs_env.Prepend(LIBS = [glew])
+
+	progs_env.Prepend(CPPPATH = [
+		'#progs/util',
+	])
+
+	progs_env.Prepend(LIBS = [
+		util,
+	])
+
+	Export('progs_env')
+
+	SConscript([
+	    'demos/SConscript',
+	    'glsl/SConscript',
+	    'redbook/SConscript',
+	    'samples/SConscript',
+	    'tests/SConscript',
+	    'trivial/SConscript',
+	    'vp/SConscript',
+	    'vpglsl/SConscript',
+	    'fp/SConscript',
+	    'wgl/SConscript',
+	    'perf/SConscript',
+	])
diff --git a/src/SConscript b/src/SConscript
index 6083fcbec98..cd4896ada40 100644
--- a/src/SConscript
+++ b/src/SConscript
@@ -8,5 +8,6 @@ if 'mesa' in env['statetrackers']:
 
 SConscript('gallium/winsys/SConscript')
 
-SConscript('glut/glx/SConscript')
-SConscript('glew/SConscript')
+if platform != 'embedded':
+	SConscript('glut/glx/SConscript')
+	SConscript('glew/SConscript')
diff --git a/src/gallium/SConscript b/src/gallium/SConscript
index eea32b1314b..d56c5c84617 100644
--- a/src/gallium/SConscript
+++ b/src/gallium/SConscript
@@ -8,9 +8,10 @@ for driver in env['drivers']:
 	SConscript(os.path.join('drivers', driver, 'SConscript'))
 
 SConscript('state_trackers/python/SConscript')
-SConscript('state_trackers/glx/xlib/SConscript')
-SConscript('state_trackers/dri/SConscript')
-SConscript('state_trackers/xorg/SConscript')
+if platform != 'embedded':
+	SConscript('state_trackers/glx/xlib/SConscript')
+	SConscript('state_trackers/dri/SConscript')
+	SConscript('state_trackers/xorg/SConscript')
 
 if platform == 'windows':
 	SConscript('state_trackers/wgl/SConscript')
-- 
2.30.2