From 4d35efd1bc5ecfa67d73bf81e64ba54c08ed5318 Mon Sep 17 00:00:00 2001
From: Dariqq <77271900+Dariqq@users.noreply.github.com>
Date: Tue, 20 Jan 2026 18:10:14 +0000
Subject: [PATCH 1/2] meson: Add option for UNITY_SUPPORT_64

---
 meson.build       | 5 +++++
 meson_options.txt | 1 +
 2 files changed, 6 insertions(+)

diff --git a/meson.build b/meson.build
index f510d857..dd567d53 100644
--- a/meson.build
+++ b/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,
diff --git a/meson_options.txt b/meson_options.txt
index 264480cf..8a5cdd27 100644
--- a/meson_options.txt
+++ b/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.')

From 29451d61b556ae68feb7de4b3d0c0f1eba6917ef Mon Sep 17 00:00:00 2001
From: Dariqq <77271900+Dariqq@users.noreply.github.com>
Date: Tue, 20 Jan 2026 18:10:32 +0000
Subject: [PATCH 2/2] cmake: Add option for UNITY_SUPPORT64

---
 CMakeLists.txt | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f7062199..5d775409 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -44,6 +44,7 @@ project(unity
 # Options to Build With Extras -------------------------------------------------
 option(UNITY_EXTENSION_FIXTURE "Compiles Unity with the \"fixture\" extension." OFF)
 option(UNITY_EXTENSION_MEMORY "Compiles Unity with the \"memory\" extension." OFF)
+option(UNITY_SUPPORT_INT64 "Enable 64bit integer support. OFF means autodetect." OFF)
 
 set(UNITY_EXTENSION_FIXTURE_ENABLED $<BOOL:${UNITY_EXTENSION_FIXTURE}>)
 set(UNITY_EXTENSION_MEMORY_ENABLED $<OR:${UNITY_EXTENSION_FIXTURE_ENABLED},$<BOOL:${UNITY_EXTENSION_MEMORY}>>)
@@ -56,6 +57,10 @@ if(${UNITY_EXTENSION_MEMORY})
     message(STATUS "Unity: Building with the memory extension.")
 endif()
 
+if(${UNITY_SUPPORT_INT64})
+    message(STATUS "Unity: Building with 64bit integer support.")
+endif()
+
 # Main target ------------------------------------------------------------------
 add_library(${PROJECT_NAME} STATIC)
 add_library(${PROJECT_NAME}::framework ALIAS ${PROJECT_NAME})
@@ -89,6 +94,11 @@ set(${PROJECT_NAME}_PUBLIC_HEADERS
         $<$<BOOL:${UNITY_EXTENSION_MEMORY_ENABLED}>:${CMAKE_CURRENT_SOURCE_DIR}/extras/memory/src/unity_memory.h>
 )
 
+target_compile_definitions(${PROJECT_NAME}
+    PUBLIC
+        $<$<BOOL:${UNITY_SUPPORT_INT64}>:UNITY_SUPPORT_64>
+)
+
 set_target_properties(${PROJECT_NAME}
     PROPERTIES 
         C_STANDARD          11