meson: Add option for UNITY_SUPPORT_64

Author: Dariqq

meson.build

@@ -26,6 +26,7 @@ project('unity', 'c',
 build_fixture = get_option('extension_fixture')
 build_memory = get_option('extension_memory')
 support_double = get_option('support_double')
+support_int64 = get_option('support_int64')
 fixture_help_message = get_option('fixture_help_message')
 
 unity_args = []
@@ -51,6 +52,10 @@ if support_double
   unity_args += '-DUNITY_INCLUDE_DOUBLE'
 endif
 
+if support_int64
+  unity_args += '-DUNITY_SUPPORT_64'
+endif
+
 unity_lib = static_library(meson.project_name(),
   sources: unity_src,
   c_args: unity_args,

meson_options.txt

@@ -1,4 +1,5 @@
 option('extension_fixture', type: 'boolean', value: false, description: 'Whether to enable the fixture extension.')
 option('extension_memory', type: 'feature', value: 'auto', description: 'Whether to enable the memory extension. By default this is automatically enabled when extension_fixture is enabled.')
 option('support_double', type: 'boolean', value: false, description: 'Whether to enable double precision floating point assertions.')
+option('support_int64', type: 'boolean', value: false, description: 'Whether to enable support for 64bit integers. false means autodetect.')
 option('fixture_help_message', type: 'string', description: 'If the fixture extension is enabled, this allows a custom help message to be defined.')