scons: Revamp how to specify targets to build.

Use scons target and dependency system instead of ad-hoc options.

Now is simply a matter of naming what to build. For example:

  scons libgl-xlib

  scons libgl-gdi

  scons graw-progs

  scons llvmpipe

and so on. And there is also the possibility of scepcified subdirs, e.g.

  scons src/gallium/drivers

If nothing is specified then everything will be build.

There might be some rough corners over the next days. Please bare with me.

5 files changed, 173 insertions, 168 deletions

diff --git a/src/gallium/state_trackers/egl/SConscript b/src/gallium/state_trackers/egl/SConscript
index efcce25e317..8d34e47df0e 100644
--- a/src/gallium/state_trackers/egl/SConscript
+++ b/src/gallium/state_trackers/egl/SConscript
@@ -3,34 +3,35 @@
 
 Import('*')
 
-if 'egl' in env['statetrackers']:
+if env['platform'] != 'windows':
+    Return()
 
-    env = env.Clone()
+env = env.Clone()
 
-    env.Append(CPPPATH = [
-	'#/src/egl/main',
-	'#/src/gallium/winsys/sw',
-	'.',
-    ])
-    env.Append(CPPDEFINES = [
-	'HAVE_GDI_BACKEND',
-    ])
+env.Append(CPPPATH = [
+    '#/src/egl/main',
+    '#/src/gallium/winsys/sw',
+    '.',
+])
+env.Append(CPPDEFINES = [
+    'HAVE_GDI_BACKEND',
+])
 
-    common_sources = [
-        'common/egl_g3d.c',
-        'common/egl_g3d_api.c',
-        'common/egl_g3d_image.c',
-        'common/egl_g3d_st.c',
-        'common/egl_g3d_sync.c',
-        'common/native_helper.c',
-    ]
+common_sources = [
+    'common/egl_g3d.c',
+    'common/egl_g3d_api.c',
+    'common/egl_g3d_image.c',
+    'common/egl_g3d_st.c',
+    'common/egl_g3d_sync.c',
+    'common/native_helper.c',
+]
 
-    gdi_sources = common_sources + [
-        'gdi/native_gdi.c',
-    ]
+gdi_sources = common_sources + [
+    'gdi/native_gdi.c',
+]
 
-    st_egl_gdi = env.ConvenienceLibrary(
-	target = 'st_egl_gdi',
-	source = gdi_sources,
-    )
-    Export('st_egl_gdi')
+st_egl_gdi = env.ConvenienceLibrary(
+    target = 'st_egl_gdi',
+    source = gdi_sources,
+)
+Export('st_egl_gdi')
diff --git a/src/gallium/state_trackers/glx/xlib/SConscript b/src/gallium/state_trackers/glx/xlib/SConscript
index 9df351a2769..775000eacce 100644
--- a/src/gallium/state_trackers/glx/xlib/SConscript
+++ b/src/gallium/state_trackers/glx/xlib/SConscript
@@ -3,25 +3,25 @@
 
 Import('*')
 
-if env['platform'] == 'linux' \
-        and 'mesa' in env['statetrackers']:
+if not env['x11']:
+    Return()
 
-    env = env.Clone()
+env = env.Clone()
 
-    env.Append(CPPPATH = [
-        '#/src/mapi',
-        '#/src/mesa',
-        '#/src/mesa/main',
-    ])
+env.Append(CPPPATH = [
+    '#/src/mapi',
+    '#/src/mesa',
+    '#/src/mesa/main',
+])
 
-    st_xlib = env.ConvenienceLibrary(
-	target = 'st_xlib',
-	source = [
-		'glx_api.c',
-		'glx_getproc.c',
-		'glx_usefont.c',
-		'xm_api.c',
-		'xm_st.c',
-		]
-    )
-    Export('st_xlib')
+st_xlib = env.ConvenienceLibrary(
+target = 'st_xlib',
+source = [
+    'glx_api.c',
+    'glx_getproc.c',
+    'glx_usefont.c',
+    'xm_api.c',
+    'xm_st.c',
+    ]
+)
+Export('st_xlib')
diff --git a/src/gallium/state_trackers/python/SConscript b/src/gallium/state_trackers/python/SConscript
index aadeaa0a359..5cb7960f9b5 100644
--- a/src/gallium/state_trackers/python/SConscript
+++ b/src/gallium/state_trackers/python/SConscript
@@ -3,57 +3,61 @@ import os.path
 
 Import('*')
 
-if 'python' in env['statetrackers']:
-
-    env = env.Clone()
-    
-    env.Tool('python')
-    
-    env.Tool('swig')
-    env.Append(SWIGPATH = ['#src/gallium/include', '#src/gallium/include/pipe'])
-    env.Append(SWIGFLAGS = ['-python', '-keyword'])
-    
-    env.Append(CPPPATH = '.')
-
-    if env['platform'] == 'windows':
-        env.Append(LIBS = [
-            'opengl32',
-            'gdi32',
-            'user32',
-            'kernel32',
-            'ws2_32',
-        ])
-    else:
-        env.Append(CPPDEFINES = ['GCC_HASCLASSVISIBILITY'])
-        env.Append(LIBS = [
-        	'GL',
-            'X11',
-        ])
-
-    sources = [
-        'gallium.i',
-        'st_device.c',
-        'st_sample.c',
-        'st_hardpipe_winsys.c',
-        'st_softpipe_winsys.c',
-    ]
-
-    env.Prepend(LIBS = [
-        ws_null,
-        trace,
-        gallium,
-    ])
+if env['toolchain'] == 'crossmingw':
+    # Cross-compilation not supported
+    Return()
+
+env = env.Clone()
+
+env.Tool('python')
 
-    if env['llvm']:
-        env.Append(CPPDEFINES = ['HAVE_LLVMPIPE'])
-        env.Prepend(LIBS = [llvmpipe])
-    if True:
-        env.Append(CPPDEFINES = ['HAVE_SOFTPIPE'])
-        env.Prepend(LIBS = [softpipe])
+env.Tool('swig')
+env.Append(SWIGPATH = ['#src/gallium/include', '#src/gallium/include/pipe'])
+env.Append(SWIGFLAGS = ['-python', '-keyword'])
 
-    env['no_import_lib'] = 1
+env.Append(CPPPATH = '.')
+
+if env['platform'] == 'windows':
+    env.Append(LIBS = [
+        'opengl32',
+        'gdi32',
+        'user32',
+        'kernel32',
+        'ws2_32',
+    ])
+else:
+    env.Append(CPPDEFINES = ['GCC_HASCLASSVISIBILITY'])
+    env.Append(LIBS = [
+        'GL',
+        'X11',
+    ])
 
-    env.SharedLibrary(
-        target = '_gallium',
-        source = sources,
-    )
+sources = [
+    'gallium.i',
+    'st_device.c',
+    'st_sample.c',
+    'st_hardpipe_winsys.c',
+    'st_softpipe_winsys.c',
+]
+
+env.Prepend(LIBS = [
+    ws_null,
+    trace,
+    gallium,
+])
+
+if env['llvm']:
+    env.Append(CPPDEFINES = ['HAVE_LLVMPIPE'])
+    env.Prepend(LIBS = [llvmpipe])
+if True:
+    env.Append(CPPDEFINES = ['HAVE_SOFTPIPE'])
+    env.Prepend(LIBS = [softpipe])
+
+env['no_import_lib'] = 1
+
+pyst = env.SharedLibrary(
+    target = '_gallium',
+    source = sources,
+)
+
+env.Alias('python', pyst)
diff --git a/src/gallium/state_trackers/vega/SConscript b/src/gallium/state_trackers/vega/SConscript
index 548053eb646..4c6e18f42b2 100644
--- a/src/gallium/state_trackers/vega/SConscript
+++ b/src/gallium/state_trackers/vega/SConscript
@@ -3,49 +3,48 @@
 
 Import('*')
 
-if 'egl' in env['statetrackers']:
+env = env.Clone()
 
-    env = env.Clone()
+env.Append(CPPPATH = [
+    '#/src/mapi',
+])
 
-    env.Append(CPPPATH = [
-	'#/src/mapi',
-    ])
+vega_sources = [
+   'api.c',
+   'api_context.c',
+   'api_filters.c',
+   'api_images.c',
+   'api_masks.c',
+   'api_misc.c',
+   'api_paint.c',
+   'api_params.c',
+   'api_path.c',
+   'api_text.c',
+   'api_transform.c',
+   'vgu.c',
+   'vg_context.c',
+   'vg_manager.c',
+   'vg_state.c',
+   'vg_translate.c',
+   'polygon.c',
+   'bezier.c',
+   'path.c',
+   'paint.c',
+   'arc.c',
+   'image.c',
+   'renderer.c',
+   'stroker.c',
+   'mask.c',
+   'shader.c',
+   'shaders_cache.c',
+]
 
-    vega_sources = [
-       'api.c',
-       'api_context.c',
-       'api_filters.c',
-       'api_images.c',
-       'api_masks.c',
-       'api_misc.c',
-       'api_paint.c',
-       'api_params.c',
-       'api_path.c',
-       'api_text.c',
-       'api_transform.c',
-       'vgu.c',
-       'vg_context.c',
-       'vg_manager.c',
-       'vg_state.c',
-       'vg_translate.c',
-       'polygon.c',
-       'bezier.c',
-       'path.c',
-       'paint.c',
-       'arc.c',
-       'image.c',
-       'renderer.c',
-       'stroker.c',
-       'mask.c',
-       'shader.c',
-       'shaders_cache.c',
-    ]
+# vgapi_header must be generated first
+env.Depends(vega_sources, vgapi_header)
 
-    # vgapi_header must be generated first
-    env.Depends(vega_sources, vgapi_header)
+st_vega = env.ConvenienceLibrary(
+    target = 'st_vega',
+    source = vega_sources,
+)
 
-    st_vega = env.ConvenienceLibrary(
-	target = 'st_vega',
-	source = vega_sources,
-    )
-    Export('st_vega')
+Export('st_vega')
diff --git a/src/gallium/state_trackers/xorg/SConscript b/src/gallium/state_trackers/xorg/SConscript
index 0b598dab6e3..ffaa1c26846 100644
--- a/src/gallium/state_trackers/xorg/SConscript
+++ b/src/gallium/state_trackers/xorg/SConscript
@@ -3,34 +3,35 @@
 
 Import('*')
 
-if 'xorg' in env['statetrackers']:
-
-    env = env.Clone()
-
-    env.Append(CPPPATH = [
-	'#/src/mesa',
-    ])
-
-    env.ParseConfig('pkg-config --cflags --libs libdrm xorg-server')
-
-    conf = env.Configure()
-
-    if conf.CheckHeader('X11/extensions/dpmsconst.h'):
-        env.Append(CPPDEFINES = [('HAVE_XEXTPROTO_71', '1')])
-
-    conf.Finish()
-
-    st_xorg = env.ConvenienceLibrary(
-	target = 'st_xorg',
-	source = [ 'xorg_composite.c',
-		'xorg_crtc.c',
-		'xorg_dri2.c',
-		'xorg_driver.c',
-		'xorg_exa.c',
-		'xorg_exa_tgsi.c',
-		'xorg_output.c',
-		'xorg_renderer.c',
-		'xorg_xv.c',
-		]
-    )
-    Export('st_xorg')
+if not env['x11'] or not env['dri'] or not env['xorg']:
+    Return()
+
+env = env.Clone()
+
+env.Append(CPPPATH = [
+    '#/src/mesa',
+])
+
+env.ParseConfig('pkg-config --cflags --libs libdrm xorg-server')
+
+conf = env.Configure()
+
+if conf.CheckHeader('X11/extensions/dpmsconst.h'):
+    env.Append(CPPDEFINES = [('HAVE_XEXTPROTO_71', '1')])
+
+conf.Finish()
+
+st_xorg = env.ConvenienceLibrary(
+target = 'st_xorg',
+source = [ 'xorg_composite.c',
+    'xorg_crtc.c',
+    'xorg_dri2.c',
+    'xorg_driver.c',
+    'xorg_exa.c',
+    'xorg_exa_tgsi.c',
+    'xorg_output.c',
+    'xorg_renderer.c',
+    'xorg_xv.c',
+    ]
+)
+Export('st_xorg')