From befef7e52ada1f9382bec74af7226f4b84054c57 Mon Sep 17 00:00:00 2001
From: Sebastian Pipping <sebastian@pipping.org>
Date: Mon, 27 Dec 2021 20:45:04 +0100
Subject: CMake: Add unofficial flag for passing 32bit compile flag -m32

---
 expat/CMakeLists.txt | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/expat/CMakeLists.txt b/expat/CMakeLists.txt
index 7e5b9590..ab3b8d8c 100644
--- a/expat/CMakeLists.txt
+++ b/expat/CMakeLists.txt
@@ -151,6 +151,9 @@ mark_as_advanced(EXPAT_MIN_SIZE)
 if(MSVC OR _EXPAT_HELP)
     set(EXPAT_MSVC_STATIC_CRT OFF CACHE BOOL "Use /MT flag (static CRT) when compiling in MSVC")
 endif()
+if(NOT _EXPAT_HELP)
+    set(_EXPAT_M32 OFF CACHE BOOL "(Unofficial!) Produce 32bit code with -m32")
+endif()
 
 if(EXPAT_BUILD_TESTS)
     # We have to call enable_language() before modifying any CMAKE_CXX_* variables
@@ -322,6 +325,23 @@ if (MSVC)
     endif()
 endif()
 
+if(_EXPAT_M32 AND NOT MSVC)
+    foreach(flag_var
+            CMAKE_CXX_FLAGS_${_EXPAT_BUILD_TYPE_UPPER}
+            CMAKE_CXX_FLAGS_DEBUG
+            CMAKE_CXX_FLAGS_RELEASE
+            CMAKE_CXX_FLAGS_MINSIZEREL
+            CMAKE_CXX_FLAGS_RELWITHDEBINFO
+            CMAKE_C_FLAGS_${_EXPAT_BUILD_TYPE_UPPER}
+            CMAKE_C_FLAGS_DEBUG
+            CMAKE_C_FLAGS_RELEASE
+            CMAKE_C_FLAGS_MINSIZEREL
+            CMAKE_C_FLAGS_RELWITHDEBINFO
+            )
+        set(${flag_var} "${${flag_var}} -m32")
+    endforeach()
+endif()
+
 include_directories(${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/lib)
 if(MSVC)
     add_definitions(-D_CRT_SECURE_NO_WARNINGS -wd4996)
-- 
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