Compute all float data information at compile time, not config time

For multilib configurations which have varying sets of floating point
data definitions that depend on the multilib configuration, don't
attempt to discover any properties at build time. Instead, do all of
that at compile time so that things can vary depending on the compiler
options.

Signed-off-by: Keith Packard <[email protected]>

Author: keith-packard

meson.build

@@ -145,30 +145,6 @@ long double test(void)
 
 have_long_double = cc.compiles(long_double_code, name : 'long double check', args: core_c_args)
 
-have_sizeof_float = cc.get_define('__SIZEOF_FLOAT__') != ''
-have_sizeof_double = cc.get_define('__SIZEOF_DOUBLE__') != ''
-have_sizeof_long_double = have_long_double and cc.get_define('__SIZEOF_LONG_DOUBLE__') != ''
-
-set_double_equals_float = not have_sizeof_float or not have_sizeof_double
-
-if set_double_equals_float
-  float_double_code = '''
-char size_test[sizeof(float) == sizeof(double) ? 1 : -1];
-'''
-  set_double_equals_float = 
-  double_equals_float = cc.compiles(float_double_code, name : 'double same as float', args : core_c_args)
-endif
-
-set_long_double_equals_double = not have_sizeof_double or not have_sizeof_long_double
-
-if set_long_double_equals_double
-  long_double_size_code = '''
-#include <float.h>
-char size_test[sizeof(double) == sizeof(long double) ? 1 : -1];
-'''
-  long_double_equals_double = cc.compiles(long_double_size_code, name : 'long double same as double', args: core_c_args)
-endif
-
 enable_multilib = get_option('multilib')
 multilib_list = get_option('multilib-list')
 enable_picolib = get_option('picolib')
@@ -1259,14 +1235,6 @@ conf_data.set('_HAVE_NO_BUILTIN_ATTRIBUTE',
 
 conf_data.set('_HAVE_LONG_DOUBLE', have_long_double,
 	      description: 'Compiler has long double type')
-if set_double_equals_float
-  conf_data.set('_DBL_EQ_FLT', double_equals_float,
-		description: 'double is the same as float')
-endif
-if set_long_double_equals_double
-  conf_data.set('_LDBL_EQ_DBL', long_double_equals_double,
-		description: 'long double is the same as double')
-endif
 conf_data.set('_HAVE_ALIAS_ATTRIBUTE', have_alias_attribute)
 conf_data.set('_HAVE_FORMAT_ATTRIBUTE', have_format_attribute)
 conf_data.set('_HAVE_WEAK_ATTRIBUTE', have_weak_attribute)