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 ebced16..fdcd72b 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 cea237a..37d0a0d 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 bff9707..aadeaa0a 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 9a3838d..77f4438 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 1b5350a..979252b 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 a6ef1f2..2a55c7a 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 0d2ffd2..63e4531 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])