Add configure option to raise a FP exception when a denormal

is detected.


git-svn-id: svn://localhost/ardour2/branches/3.0@11086 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 14 insertions, 0 deletions

diff --git a/wscript b/wscript
index 05620d375a..f8e3edccb0 100644
--- a/wscript
+++ b/wscript
@@ -310,6 +310,12 @@ def set_compiler_flags (conf,opt):
         conf.env.append_value('CXXFLAGS', '-DDEBUG_RT_ALLOC')
         conf.env.append_value('LINKFLAGS', '-ldl')
 
+    print 'bar'
+    if conf.env['DEBUG_DENORMAL_EXCEPTION']:
+        print 'foo'
+        conf.env.append_value('CFLAGS', '-DDEBUG_DENORMAL_EXCEPTION')
+        conf.env.append_value('CXXFLAGS', '-DDEBUG_DENORMAL_EXCEPTION')
+
     if opt.universal:
         if not Options.options.nocarbon:
             conf.env.append_value('CFLAGS', ["-arch", "i386", "-arch", "ppc"])
@@ -387,6 +393,8 @@ def options(opt):
                     help='Build with debugging for the STL')
     opt.add_option('--rt-alloc-debug', action='store_true', default=False, dest='rt_alloc_debug',
                     help='Build with debugging for memory allocation in the real-time thread')
+    opt.add_option('--denormal-exception', action='store_true', default=False, dest='denormal_exception',
+                    help='Raise a floating point exception if a denormal is detected')
     opt.add_option('--test', action='store_true', default=False, dest='build_tests',
                     help="Build unit tests")
     opt.add_option('--tranzport', action='store_true', default=False, dest='tranzport',
@@ -582,6 +590,10 @@ def configure(conf):
     conf.env['PROGRAM_NAME'] = opts.program_name
     if opts.rt_alloc_debug:
         conf.define('DEBUG_RT_ALLOC', 1)
+        conf.env['DEBUG_RT_ALLOC'] = True
+    if opts.denormal_exception:
+        conf.define('DEBUG_DENORMAL_EXCEPTION', 1)
+        conf.env['DEBUG_DENORMAL_EXCEPTION'] = True
     if not conf.is_defined('HAVE_CPPUNIT'):
         conf.env['BUILD_TESTS'] = False
 
@@ -610,6 +622,8 @@ const char* const ardour_config_info = "\\n\\
     write_config_text('AU state support',      conf.is_defined('AU_STATE_SUPPORT'))
     write_config_text('Build target',          conf.env['build_target'])
     write_config_text('CoreAudio',             conf.is_defined('HAVE_COREAUDIO'))
+    write_config_text('Debug RT allocations',  conf.is_defined('DEBUG_RT_ALLOC'))
+    write_config_text('Denormal exceptions',   conf.is_defined('DEBUG_DENORMAL_EXCEPTION'))
     write_config_text('FLAC',                  conf.is_defined('HAVE_FLAC'))
     write_config_text('FPU optimization',      opts.fpu_optimization)
     write_config_text('Freedesktop files',     opts.freedesktop)