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wscript: add more infos, pass HAVE_AUBIO_DOUBLE in compiler arguments

--- a/wscript

+++ b/wscript

@@ -195,15 +195,19 @@

             mandatory = False):

         ctx.define('HAVE_C99_VARARGS_MACROS', 1)

-    # double precision mode

+    # show a message about enable_double status

     if (ctx.options.enable_double == True):

-        ctx.define('HAVE_AUBIO_DOUBLE', 1)

+        ctx.msg('Checking for size of smpl_t', 'double')

+        ctx.msg('Checking for size of lsmp_t', 'long double')

     else:

-        ctx.define('HAVE_AUBIO_DOUBLE', 0)

+        ctx.msg('Checking for size of smpl_t', 'float')

+        ctx.msg('Checking for size of lsmp_t', 'double')

     # optionally use complex.h

     if (ctx.options.enable_complex == True):

         ctx.check(header_name='complex.h')

+    else:

+        ctx.msg('Checking if complex.h is enabled', 'no')

     # check for fftw3

     if (ctx.options.enable_fftw3 != False or ctx.options.enable_fftw3f != False):

@@ -293,9 +297,16 @@

     # write configuration header

     ctx.write_config_header('src/config.h')

+    # the following defines will be passed as arguments to the compiler

+    # instead of being written to src/config.h

+

     # add some defines used in examples

     ctx.define('AUBIO_PREFIX', ctx.env['PREFIX'])

     ctx.define('PACKAGE', APPNAME)

+

+    # double precision mode

+    if (ctx.options.enable_double == True):

+        ctx.define('HAVE_AUBIO_DOUBLE', 1)

     if (ctx.options.enable_docs != False):

         # check if txt2man is installed, optional