From 201c6fe89ea1977aa296277694a6e94314aca0a8 Mon Sep 17 00:00:00 2001
From: Alex Sweet <sweet.giorni@gmail.com>
Date: Mon, 23 Mar 2020 01:59:33 -0700
Subject: [PATCH] Fix ninja-build build error

---
 CMakeLists.txt | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a8f0c4492..89051b7bc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -502,8 +502,14 @@ endif()
 
 if(NOT CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
   # Change __FILE__ to only show the path relative to the project folder
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-builtin-macro-redefined -D'__FILE__=\"$(subst $(realpath ${CMAKE_SOURCE_DIR})/,,$(abspath $<))\"'")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-builtin-macro-redefined -D'__FILE__=\"$(subst $(realpath ${CMAKE_SOURCE_DIR})/,,$(abspath $<))\"'")
+  get_target_property(devilution_SRCS devilution SOURCES)
+  foreach(SOURCE_FILE ${devilution_SRCS} ${devilutionx_SRCS})
+    set_source_files_properties(${SOURCE_FILE} PROPERTIES
+      COMPILE_DEFINITIONS __FILE__="${SOURCE_FILE}"
+    )
+  endforeach(SOURCE_FILE)
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-builtin-macro-redefined")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-builtin-macro-redefined")
 
   if(DEBUG)
     # Note: For Valgrind suppor.