Changeset 756

Timestamp:

12/08/07 12:26:29 (13 years ago)

Author:

ppalmers

Message:

add optimization flags

Files:

• trunk/libffado/admin/config.guess (added)
• trunk/libffado/config.h.in (modified) (1 diff)
• trunk/libffado/SConstruct (modified) (3 diffs)

trunk/libffado/config.h.in

@@ -28 +28 @@
-
-/* Define to 1 if SSE assembly is available. */
-
+
-
-#define CACHEDIR "~/.ffado"

trunk/libffado/SConstruct

@@ -23 +23 @@
-
-import os
+import re
-from string import Template
-
@@ -70 +71 @@
-""", True ),
-    BoolOption( "BUILD_STATIC_TOOLS", "Build a statically linked version of the FFADO tools.", False ),
+    EnumOption('DIST_TARGET', 'Build target for cross compiling packagers', 'auto', allowed_values=('auto', 'i386', 'i686', 'x86_64', 'none' ), ignorecase=2),
+    BoolOption( "ENABLE_OPTIMIZATIONS", "Enable optimizations and the use of processor specific extentions (MMX/SSE/...).", False ),
+
-        )
-
@@ -224 +228 @@
-env.Alias( "install", env['bindir'] )
-
+#
+# shamelessly copied from the Ardour scons file
+#
+
+opt_flags = []
+env['USE_SSE'] = 0
+
+# guess at the platform, used to define compiler flags
+
+config_guess = os.popen("admin/config.guess").read()[:-1]
+
+config_cpu = 0
+config_arch = 1
+config_kernel = 2
+config_os = 3
+config = config_guess.split ("-")
+
+print "system triple: " + config_guess
+
+# Autodetect
+if env['DIST_TARGET'] == 'auto':
+    if re.search ("x86_64", config[config_cpu]) != None:
+        env['DIST_TARGET'] = 'x86_64'
+    elif re.search("i[0-5]86", config[config_cpu]) != None:
+        env['DIST_TARGET'] = 'i386'
+    else:
+        env['DIST_TARGET'] = 'i686'
+    print "Detected DIST_TARGET = " + env['DIST_TARGET']
+
+if ((re.search ("i[0-9]86", config[config_cpu]) != None) or (re.search ("x86_64", config[config_cpu]) != None)):
+    
+    build_host_supports_sse = 0
+
+    if config[config_kernel] == 'linux' :
+        
+        if env['DIST_TARGET'] != 'i386':
+            
+            flag_line = os.popen ("cat /proc/cpuinfo | grep '^flags'").read()[:-1]
+            x86_flags = flag_line.split (": ")[1:][0].split ()
+            
+            if "mmx" in x86_flags:
+                opt_flags.append ("-mmmx")
+            if "sse" in x86_flags:
+                build_host_supports_sse = 1
+            if "3dnow" in x86_flags:
+                opt_flags.append ("-m3dnow")
+            
+            if config[config_cpu] == "i586":
+                opt_flags.append ("-march=i586")
+            elif config[config_cpu] == "i686":
+                opt_flags.append ("-march=i686")
+    
+    if ((env['DIST_TARGET'] == 'i686') or (env['DIST_TARGET'] == 'x86_64')) and build_host_supports_sse:
+        opt_flags.extend (["-msse", "-mfpmath=sse"])
+        env['USE_SSE'] = 1
+
+# end of processor-specific section
+if env['ENABLE_OPTIMIZATIONS']:
+        env.AppendUnique( CCFLAGS=opt_flags )
+        print "Doing an optimized build..."
+
-
-env['REVISION'] = os.popen('svnversion .').read()[:-1]