Build options are set via a build_options file in the

build directory instead of being inferred from the name
of the build directory.
Options are passed to C++ via config/*.hh files instead of
via the command line.  Build option flags are now always
defined to 0 or 1, so checks must use '#if' rather than
'#ifdef'.

SConscript:
    MySQL detection moved to SConstruct.
    Add config/*.hh files (via ConfigFile builder).
arch/alpha/alpha_memory.cc:
arch/alpha/ev5.cc:
arch/alpha/ev5.hh:
arch/alpha/isa_traits.hh:
base/fast_alloc.hh:
base/statistics.cc:
base/statistics.hh:
base/stats/events.cc:
base/stats/events.hh:
cpu/base.cc:
cpu/base.hh:
cpu/base_dyn_inst.cc:
cpu/base_dyn_inst.hh:
cpu/exec_context.cc:
cpu/exec_context.hh:
cpu/o3/alpha_cpu.hh:
cpu/o3/alpha_cpu_builder.cc:
cpu/o3/alpha_cpu_impl.hh:
cpu/o3/alpha_dyn_inst.hh:
cpu/o3/alpha_dyn_inst_impl.hh:
cpu/o3/alpha_params.hh:
cpu/o3/commit_impl.hh:
cpu/o3/cpu.cc:
cpu/o3/cpu.hh:
cpu/o3/fetch_impl.hh:
cpu/o3/iew.hh:
cpu/o3/iew_impl.hh:
cpu/o3/regfile.hh:
cpu/o3/rename_impl.hh:
cpu/o3/rob_impl.hh:
cpu/ozone/cpu.hh:
cpu/pc_event.cc:
cpu/simple/cpu.cc:
cpu/simple/cpu.hh:
sim/process.cc:
sim/process.hh:
    Convert compile flags from def/undef to 0/1.
    Set via #include config/*.hh instead of command line.
arch/alpha/isa_desc:
    Convert compile flags from def/undef to 0/1.
    Set via #include config/*.hh instead of command line.
    Revamp fenv.h support... most of the ugliness is hidden
    in base/fenv.hh now.
base/mysql.hh:
    Fix typo in #ifndef guard.
build/SConstruct:
    Build options are set via a build_options file in the
    build directory instead of being inferred from the name
    of the build directory.
    Options are passed to C++ via config/*.hh files instead of
    via the command line.
python/SConscript:
    Generate m5_build_env directly from scons options
    instead of indirectly via CPPDEFINES.
python/m5/convert.py:
    Allow '0' and '1' for booleans.
    Rewrite toBool to use dict.
base/fenv.hh:
    Revamp <fenv.h> support to make it a compile option
    (so we can test w/o it even if it's present) and to
    make isa_desc cleaner.

--HG--
extra : convert_revision : 8f97dc11185bef5e1865b3269c7341df8525c9ad

SConscript

@@ -366,18 +366,11 @@ if env['FULL_SYSTEM']:
 else:
     sources += syscall_emulation_sources
 
-extra_libraries = []
-env.Append(LIBS=['z'])
-if isdir('/usr/lib64/mysql') or isdir('/usr/lib/mysql') or \
-   isdir('/usr/local/lib/mysql'):
-    print 'Compiling with MySQL support!'
-    env.Append(LIBPATH=['/usr/lib64/mysql', '/usr/local/lib/mysql/',
-                        '/usr/lib/mysql'])
-    env.Append(CPPPATH=['/usr/local/include/mysql', '/usr/include/mysql'])
+if env['USE_MYSQL']:
     sources += mysql_sources
-    env.Append(CPPDEFINES = 'USE_MYSQL')
-    env.Append(CPPDEFINES = 'STATS_BINNING')
-    env.Append(LIBS=['mysqlclient'])
+
+for opt in env.ExportOptions:
+    env.ConfigFile(opt)
 
 ###################################################
 #
@@ -421,7 +414,6 @@ def make_objs(sources, env):
     date_obj = env.Object('base/date.cc')
     env.Depends(date_obj, objs)
     objs.append(date_obj)
-    objs.extend(extra_libraries)
     return objs
 
 ###################################################