scons: Remove stale compiler options

This patch simply prunes the SUNCC and ICC compiler options as they
are both sufficiently stale that they would have to be re-written from
scratch anyhow. The patch serves to clean things up before shifting to
a build environment that enforces basic c++11 compliance as done in
the following patch.

SConstruct

@@ -509,10 +509,8 @@ CXX_version = readCommand([main['CXX'],'--version'], exception=False)
 CXX_V = readCommand([main['CXX'],'-V'], exception=False)
 
 main['GCC'] = CXX_version and CXX_version.find('g++') >= 0
-main['SUNCC'] = CXX_V and CXX_V.find('Sun C++') >= 0
-main['ICC'] = CXX_V and CXX_V.find('Intel') >= 0
 main['CLANG'] = CXX_version and CXX_version.find('clang') >= 0
-if main['GCC'] + main['SUNCC'] + main['ICC'] + main['CLANG'] > 1:
+if main['GCC'] + main['CLANG'] > 1:
     print 'Error: How can we have two at the same time?'
     Exit(1)
 
@@ -552,15 +550,6 @@ if main['GCC']:
             main['LTO_LDFLAGS'] = ['-flto=%d' % GetOption('num_jobs'),
                                    '-fuse-linker-plugin']
 
-elif main['ICC']:
-    pass #Fix me... add warning flags once we clean up icc warnings
-elif main['SUNCC']:
-    main.Append(CCFLAGS=['-Qoption ccfe'])
-    main.Append(CCFLAGS=['-features=gcc'])
-    main.Append(CCFLAGS=['-features=extensions'])
-    main.Append(CCFLAGS=['-library=stlport4'])
-    main.Append(CCFLAGS=['-xar'])
-    #main.Append(CCFLAGS=['-instances=semiexplicit'])
 elif main['CLANG']:
     clang_version_re = re.compile(".* version (\d+\.\d+)")
     clang_version_match = clang_version_re.match(CXX_version)
@@ -597,7 +586,7 @@ else:
                termcap.Normal
     else:
         print CXX_version.replace('\n', '<nl>')
-    print "       If you're trying to use a compiler other than GCC, ICC, SunCC,"
+    print "       If you're trying to use a compiler other than GCC"
     print "       or clang, there appears to be something wrong with your"
     print "       environment."
     print "       "

src/SConscript

@@ -1006,17 +1006,6 @@ if env['GCC']:
 
     ccflags['fast'] += env['LTO_CCFLAGS']
     ldflags['fast'] += env['LTO_LDFLAGS']
-
-elif env['SUNCC']:
-    ccflags['debug'] += ['-g0']
-    ccflags['opt'] += ['-O']
-    for target in ['fast', 'prof', 'perf']:
-        ccflags[target] += ['-fast']
-elif env['ICC']:
-    ccflags['debug'] += ['-g', '-O0']
-    ccflags['opt'] += ['-O']
-    for target in ['fast', 'prof', 'perf']:
-        ccflags[target] += ['-fast']
 elif env['CLANG']:
     ccflags['debug'] += ['-g', '-O0']
     # opt, fast, prof and perf all share the same cc flags

src/base/compiler.hh

@@ -1,4 +1,16 @@
 /*
+ * Copyright (c) 2012 ARM Limited
+ * All rights reserved
+ *
+ * The license below extends only to copyright in the software and shall
+ * not be construed as granting a license to any other intellectual
+ * property including but not limited to intellectual property relating
+ * to a hardware implementation of the functionality of the software
+ * licensed hereunder.  You may use the software subject to the license
+ * terms below provided that you ensure that this notice is replicated
+ * unmodified and in its entirety in all distributions of the software,
+ * modified or unmodified, in source code or in binary form.
+ *
  * Copyright (c) 2006 The Regents of The University of Michigan
  * All rights reserved.
  *
@@ -33,10 +45,7 @@
 
 #include "config/have_static_assert.hh"
 
-//http://msdn2.microsoft.com/en-us/library/ms937669.aspx
+// http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html
-//http://msdn2.microsoft.com/en-us/library/aa448724.aspx
-//http://docs.sun.com/source/819-3688/sun.specific.html#marker-998278
-//http://gcc.gnu.org/onlinedocs/gcc-3.3.1/gcc/Function-Attributes.html#Function%20Attributes
 
 #if defined(__GNUC__)
 #define M5_ATTR_NORETURN  __attribute__((noreturn))
@@ -45,15 +54,6 @@
 #define M5_VAR_USED __attribute__((unused))
 #define M5_ATTR_PACKED __attribute__ ((__packed__))
 #define M5_NO_INLINE __attribute__ ((__noinline__))
-#elif defined(__SUNPRO_CC)
-// this doesn't do anything with sun cc, but why not
-#define M5_ATTR_NORETURN  __sun_attr__((__noreturn__))
-#define M5_DUMMY_RETURN return (0);
-#define DO_PRAGMA(x) _Pragma(#x)
-#define M5_VAR_USED
-#define M5_PRAGMA_NORETURN(x) DO_PRAGMA(does_not_return(x))
-#define M5_ATTR_PACKED __attribute__ ((__packed__))
-#define M5_NO_INLINE __attribute__ ((__noinline__))
 #else
 #error "Need to define compiler options in base/compiler.hh"
 #endif