From 4c79ee82ac0ad995414529350bc952a400109d1a Mon Sep 17 00:00:00 2001
From: Stenzek <stenzek@gmail.com>
Date: Wed, 31 Dec 2025 17:30:02 +1000
Subject: [PATCH] CMake: Adjust fmt build macros

Set on the library, not globally.
---
 CMakeLists.txt          | 3 ---
 dep/CMakeLists.txt      | 8 +++++++-
 dep/fmt/fmt.vcxproj     | 6 +++---
 src/common/common.props | 2 +-
 4 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b0dbfaf27..862a521fb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -116,9 +116,6 @@ if(BUILD_TESTS)
   enable_testing()
 endif()
 
-# Prevent fmt from being built with exceptions, or being thrown at call sites.
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DFMT_EXCEPTIONS=0")
-
 # Recursively include the source tree.
 add_subdirectory(dep)
 add_subdirectory(src)
diff --git a/dep/CMakeLists.txt b/dep/CMakeLists.txt
index 633267c66..dc7372747 100644
--- a/dep/CMakeLists.txt
+++ b/dep/CMakeLists.txt
@@ -1,9 +1,15 @@
 set(_saved_CMAKE_MESSAGE_LOG_LEVEL ${CMAKE_MESSAGE_LOG_LEVEL})
 set(CMAKE_MESSAGE_LOG_LEVEL NOTICE)
 
-set(FMT_INSTALL OFF CACHE BOOL "")
 add_subdirectory(fmt EXCLUDE_FROM_ALL)
 disable_compiler_warnings_for_target(fmt)
+# Prevent fmt from being built with exceptions, or being thrown at call sites.
+target_compile_definitions(fmt PUBLIC
+  "FMT_EXCEPTIONS=0"
+  "FMT_USE_RTTI=0"
+  "FMT_CPP_LIB_FILESYSTEM=0"
+)
+
 add_subdirectory(minizip EXCLUDE_FROM_ALL)
 disable_compiler_warnings_for_target(minizip)
 add_subdirectory(lzma EXCLUDE_FROM_ALL)
diff --git a/dep/fmt/fmt.vcxproj b/dep/fmt/fmt.vcxproj
index 4a0156e9b..bcd0fa536 100644
--- a/dep/fmt/fmt.vcxproj
+++ b/dep/fmt/fmt.vcxproj
@@ -28,9 +28,9 @@
   <ItemDefinitionGroup>
     <ClCompile>
       <WarningLevel>TurnOffAllWarnings</WarningLevel>
-      <AdditionalIncludeDirectories>$(SolutionDir)dep\fmt\include;$(ProjectDir)include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>FMT_EXCEPTIONS=0;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(ProjectDir)include</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>%(PreprocessorDefinitions);FMT_EXCEPTIONS=0;FMT_USE_RTTI=0;FMT_CPP_LIB_FILESYSTEM=0</PreprocessorDefinitions>
     </ClCompile>
   </ItemDefinitionGroup>
   <Import Project="..\msvc\vsprops\Targets.props" />
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/common/common.props b/src/common/common.props
index ea9990faa..7b7eddb33 100644
--- a/src/common/common.props
+++ b/src/common/common.props
@@ -3,7 +3,7 @@
   <ItemDefinitionGroup>
     <ClCompile>
       <AdditionalIncludeDirectories>$(SolutionDir)src;%(AdditionalIncludeDirectories);$(SolutionDir)dep\fast_float\include;$(SolutionDir)dep\fmt\include</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>%(PreprocessorDefinitions);FMT_EXCEPTIONS=0</PreprocessorDefinitions>
+      <PreprocessorDefinitions>%(PreprocessorDefinitions);FMT_EXCEPTIONS=0;FMT_USE_RTTI=0;FMT_CPP_LIB_FILESYSTEM=0</PreprocessorDefinitions>
     </ClCompile>
   </ItemDefinitionGroup>