From 9a65ed4ce283beea8128f5c49aa7e0ff4051ceed Mon Sep 17 00:00:00 2001
From: David Ledger <68693576+seppeon@users.noreply.github.com>
Date: Wed, 8 Nov 2023 22:27:56 +1100
Subject: [PATCH] Fix Mingw Compilation (#4675)

---
 CMakeLists.txt     |  2 +-
 docs/CONTRIBUTORS  |  1 +
 src/CMakeLists.txt | 12 +++++++++---
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 642355907..f21ee2782 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -35,7 +35,7 @@ if (NOT WIN32)
     message(WARNING "CMake support on Linux/OSX is experimental.")
 endif()
 
-if (MSVC)
+if (WIN32)
     if (DEFINED ENV{WIN_FLEX_BISON})
         set(WIN_FLEX_BISON "$ENV{WIN_FLEX_BISON}")
     endif()
diff --git a/docs/CONTRIBUTORS b/docs/CONTRIBUTORS
index 44dfd678c..5159b11f5 100644
--- a/docs/CONTRIBUTORS
+++ b/docs/CONTRIBUTORS
@@ -26,6 +26,7 @@ Conor McCullough
 Dan Petrisko
 Daniel Bates
 David Horton
+David Ledger
 David Metz
 David Stanford
 David Turner
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index fdf215082..654419d86 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -466,7 +466,7 @@ set_target_properties(${verilator} PROPERTIES
     #UNITY_BUILD $<IF:$<CONFIG:DEBUG>,FALSE,${CMAKE_UNITY_BUILD}>
     MSVC_RUNTIME_LIBRARY  MultiThreaded$<IF:$<CONFIG:Release>,,DebugDLL>
     #JOB_POOL_LINK         one_job      # Linking takes lots of resources
-    INTERPROCEDURAL_OPTIMIZATION_RELEASE  TRUE
+    INTERPROCEDURAL_OPTIMIZATION_RELEASE  $<IF:MINGW,FALSE,TRUE>
 )
 
 add_dependencies(${verilator}
@@ -501,13 +501,19 @@ target_include_directories(${verilator}
 )
 
 if (WIN32)
-    target_compile_options(${verilator} PRIVATE /bigobj)
+    if(MINGW)
+        target_compile_options(${verilator} PRIVATE -Wa,-mbig-obj)
+        target_link_options(${verilator} PRIVATE -Wl,--stack,10000000 -mconsole -lcomctl32 -DWIN_32_LEAN_AND_MEAN)
+    else()
+        target_compile_options(${verilator} PRIVATE /bigobj)
+        target_link_options(${verilator} PRIVATE /STACK:10000000)
+    endif()
+
     target_compile_definitions(${verilator} PRIVATE
         YY_NO_UNISTD_H
     )
     target_include_directories(${verilator} PRIVATE ../platform/win32)
     target_link_libraries(${verilator} PRIVATE bcrypt psapi)
-    target_link_options(${verilator} PRIVATE /STACK:10000000)
 endif()
 
 install(TARGETS ${verilator})