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 ebced16c0ce..fdcd72b30d1 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 cea237aa171..37d0a0d63ce 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 bff97079f6b..aadeaa0a359 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 9a3838d64e2..77f44384d06 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 1b5350a9a48..979252b22d7 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 a6ef1f2406a..2a55c7a5776 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 0d2ffd20709..63e4531263a 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])