From d7d5e314dbf728217a877b426480552b585e2961 Mon Sep 17 00:00:00 2001
From: 500-internal-server-error
 <76838083+500-internal-server-error@users.noreply.github.com>
Date: Wed, 19 Feb 2025 20:24:57 +0700
Subject: [PATCH] Fix building with (mostly) default flags on Windows MinGW

It's already being done for Cygwin, presumably for the same reasons.
Clang auto-applies `-mbig-obj` as needed it seems:
https://reviews.llvm.org/D102419

Tests against `std::filesystem` remain broken, though, and building
with MinGW still requires disabling them manually with
`-DGHC_FILESYSTEM_BUILD_STD_TESTING=NO`:
https://github.com/gulrak/filesystem/issues/189#issuecomment-2571334165
---
 cmake/GhcHelper.cmake | 4 ++--
 test/CMakeLists.txt   | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/cmake/GhcHelper.cmake b/cmake/GhcHelper.cmake
index 4d9e5a0..ad72fd2 100644
--- a/cmake/GhcHelper.cmake
+++ b/cmake/GhcHelper.cmake
@@ -40,7 +40,7 @@ if (CMAKE_COMPILER_IS_GNUCXX AND (CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 8.0 O
     if(${CMAKE_SYSTEM_NAME} MATCHES "Haiku")
         target_link_libraries(${targetName} network)
     endif()
-    target_compile_options(${targetName} PRIVATE $<$<BOOL:${CYGWIN}>:-Wa,-mbig-obj>)
+    target_compile_options(${targetName} PRIVATE $<$<OR:$<BOOL:${CYGWIN}>,$<BOOL:${MINGW}>>:-Wa,-mbig-obj>)
     target_compile_definitions(${targetName} PRIVATE USE_STD_FS)
 endif()
 
@@ -69,7 +69,7 @@ macro(AddTestExecutableWithStdCpp cppStd)
             $<$<OR:$<CXX_COMPILER_ID:Clang>,$<CXX_COMPILER_ID:AppleClang>>:-Wall -Wextra -Wshadow -Wconversion -Wsign-conversion -Wpedantic -Werror -Wno-error=deprecated-declarations>
             $<$<CXX_COMPILER_ID:GNU>:-Wall -Wextra -Wshadow -Wconversion -Wsign-conversion -Wpedantic -Wno-psabi -Werror -Wno-error=deprecated-declarations>
             $<$<CXX_COMPILER_ID:MSVC>:/WX /wd4996>
-            $<$<BOOL:${CYGWIN}>:-Wa,-mbig-obj>
+            $<$<OR:$<BOOL:${CYGWIN}>,$<BOOL:${MINGW}>>:-Wa,-mbig-obj>
             $<$<BOOL:${GHC_COVERAGE}>:--coverage>)
     if(CMAKE_CXX_COMPILER_ID MATCHES MSVC)
         target_compile_definitions(filesystem_test_cpp${cppStd} PRIVATE _CRT_SECURE_NO_WARNINGS)
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 1401ef0..5a529a2 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -14,7 +14,7 @@ function(SetTestCompileOptions target_name)
         $<$<OR:$<CXX_COMPILER_ID:Clang>,$<CXX_COMPILER_ID:AppleClang>>:-Wall -Wextra -Wshadow -Wconversion -Wsign-conversion -Wpedantic -Werror -Wno-deprecated-declarations>
         $<$<CXX_COMPILER_ID:GNU>:-Wall -Wextra -Wshadow -Wconversion -Wsign-conversion -Wpedantic -Wno-psabi -Werror -Wno-deprecated-declarations>
         $<$<CXX_COMPILER_ID:MSVC>:/WX /wd4996>
-        $<$<BOOL:${CYGWIN}>:-Wa,-mbig-obj>)
+        $<$<OR:$<BOOL:${CYGWIN}>,$<BOOL:${MINGW}>>:-Wa,-mbig-obj>)
 endfunction()
 
 if(GHC_COVERAGE)