scons: Always build softpipe and llvmpipe (when llvm available).

These are our reference software rasterizers. They can build everywhere
and are a precious debugging tool.

Making them always present immensily simplifies the scons logic.

If people want to avoid building it is still possible to pass
direcotries and target names to scons to narrow the build.

7 files changed, 17 insertions, 33 deletions

diff --git a/SConstruct b/SConstruct
index ebced16c0c..fdcd72b30d 100644
--- a/SConstruct
+++ b/SConstruct
@@ -102,11 +102,15 @@ Export([
 #######################################################################
 # Environment setup
 
-# Always build trace and identity drivers
+# Always build trace, identity, softpipe, and llvmpipe (where possible)
 if 'trace' not in env['drivers']:
     env['drivers'].append('trace')
 if 'identity' not in env['drivers']:
     env['drivers'].append('identity')
+if 'softpipe' not in env['drivers']:
+    env['drivers'].append('softpipe')
+if env['llvm'] and 'llvmpipe' not in env['drivers']:
+    env['drivers'].append('llvmpipe')
 
 # Includes
 env.Append(CPPPATH = [
diff --git a/src/gallium/drivers/sw/SConscript b/src/gallium/drivers/sw/SConscript
index cea237aa17..37d0a0d63c 100644
--- a/src/gallium/drivers/sw/SConscript
+++ b/src/gallium/drivers/sw/SConscript
@@ -12,17 +12,13 @@
 
 Import('*')
 
-if not set(('softpipe', 'llvmpipe', 'cell')).intersection(env['drivers']):
-    print 'warning: no supported pipe driver: skipping build of sw meta-driver'
-    Return()
-
 env = env.Clone()
 
-if 'softpipe' in env['drivers']:
+if True:
     env.Append(CPPDEFINES = 'GALLIUM_SOFTPIPE')
     env.Prepend(LIBS = [softpipe])
 
-if 'llvmpipe' in env['drivers']:
+if env['llvm']:
     env.Append(CPPDEFINES = 'GALLIUM_LLVMPIPE')
     env.Tool('udis86')
     env.Prepend(LIBS = [llvmpipe])
diff --git a/src/gallium/state_trackers/python/SConscript b/src/gallium/state_trackers/python/SConscript
index bff97079f6..aadeaa0a35 100644
--- a/src/gallium/state_trackers/python/SConscript
+++ b/src/gallium/state_trackers/python/SConscript
@@ -44,10 +44,10 @@ if 'python' in env['statetrackers']:
         gallium,
     ])
 
-    if 'llvmpipe' in env['drivers']:
+    if env['llvm']:
         env.Append(CPPDEFINES = ['HAVE_LLVMPIPE'])
         env.Prepend(LIBS = [llvmpipe])
-    if 'softpipe' in env['drivers']:
+    if True:
         env.Append(CPPDEFINES = ['HAVE_SOFTPIPE'])
         env.Prepend(LIBS = [softpipe])
 
diff --git a/src/gallium/targets/dri-swrast/SConscript b/src/gallium/targets/dri-swrast/SConscript
index 9a3838d64e..77f44384d0 100644
--- a/src/gallium/targets/dri-swrast/SConscript
+++ b/src/gallium/targets/dri-swrast/SConscript
@@ -1,9 +1,5 @@
 Import('*')
 
-if not set(('softpipe', 'llvmpipe')).intersection(env['drivers']):
-    print 'warning: no supported pipe driver: skipping build of swrastg_dri.so'
-    Return()
-
 env = drienv.Clone()
 
 env.Append(CPPPATH = [
@@ -20,11 +16,11 @@ env.Prepend(LIBS = [
     COMMON_DRI_SW_OBJECTS
 ])
 
-if 'softpipe' in env['drivers']:
+if True:
     env.Append(CPPDEFINES = 'GALLIUM_SOFTPIPE')
     env.Prepend(LIBS = [softpipe])
 
-if 'llvmpipe' in env['drivers']:
+if env['llvm']:
     env.Append(CPPDEFINES = 'GALLIUM_LLVMPIPE')
     env.Tool('udis86')
     env.Prepend(LIBS = [llvmpipe])
diff --git a/src/gallium/targets/graw-xlib/SConscript b/src/gallium/targets/graw-xlib/SConscript
index 1b5350a9a4..979252b22d 100644
--- a/src/gallium/targets/graw-xlib/SConscript
+++ b/src/gallium/targets/graw-xlib/SConscript
@@ -6,10 +6,6 @@ Import('*')
 if env['platform'] != 'linux':
     Return()
 
-if not set(('softpipe', 'llvmpipe', 'cell')).intersection(env['drivers']):
-    print 'warning: no supported pipe driver: skipping build of xlib libGL.so'
-    Return()
-
 env = env.Clone()
 
 env.Prepend(LIBS = [
@@ -28,11 +24,11 @@ sources = [
     'graw_xlib.c',
 ]
 
-if 'softpipe' in env['drivers']:
+if True:
     env.Append(CPPDEFINES = 'GALLIUM_SOFTPIPE')
     env.Prepend(LIBS = [softpipe])
 
-if 'llvmpipe' in env['drivers']:
+if env['llvm']:
     env.Append(CPPDEFINES = 'GALLIUM_LLVMPIPE')
     env.Tool('udis86')
     env.Prepend(LIBS = [llvmpipe])
diff --git a/src/gallium/targets/libgl-gdi/SConscript b/src/gallium/targets/libgl-gdi/SConscript
index a6ef1f2406..2a55c7a577 100644
--- a/src/gallium/targets/libgl-gdi/SConscript
+++ b/src/gallium/targets/libgl-gdi/SConscript
@@ -22,18 +22,14 @@ if env['platform'] == 'windows':
     sources = []
     drivers = []
 
-    if 'softpipe' in env['drivers']:
+    if True:
         sources = ['gdi_softpipe_winsys.c']
         drivers = [softpipe]
 
-    if 'llvmpipe' in env['drivers']:
+    if env['llvm']:
         sources = ['gdi_llvmpipe_winsys.c']
         drivers = [llvmpipe]
 
-    if not sources or not drivers:
-        print 'warning: softpipe or llvmpipe not selected, gdi winsys disabled'
-        Return()
-    
     if env['gcc']:
         sources += ['#src/gallium/state_trackers/wgl/opengl32.mingw.def']
     else:
diff --git a/src/gallium/targets/libgl-xlib/SConscript b/src/gallium/targets/libgl-xlib/SConscript
index 0d2ffd2070..63e4531263 100644
--- a/src/gallium/targets/libgl-xlib/SConscript
+++ b/src/gallium/targets/libgl-xlib/SConscript
@@ -14,10 +14,6 @@ if env['dri']:
     print 'warning: DRI enabled: skipping build of xlib libGL.so'
     Return()
 
-if not set(('softpipe', 'llvmpipe', 'cell')).intersection(env['drivers']):
-    print 'warning: no supported pipe driver: skipping build of xlib libGL.so'
-    Return()
-
 env = env.Clone()
 
 env.Append(CPPPATH = [
@@ -45,11 +41,11 @@ sources = [
 
 env.Tool('x11')
 
-if 'softpipe' in env['drivers']:
+if True:
     env.Append(CPPDEFINES = 'GALLIUM_SOFTPIPE')
     env.Prepend(LIBS = [softpipe])
 
-if 'llvmpipe' in env['drivers']:
+if env['llvm']:
     env.Append(CPPDEFINES = 'GALLIUM_LLVMPIPE')
     env.Tool('udis86')
     env.Prepend(LIBS = [llvmpipe])