From 4151922f7ceb75d450bcd2f73b37ef18f7bbf1ef Mon Sep 17 00:00:00 2001
From: tamasmeszaros <meszaros.q@gmail.com>
Date: Thu, 11 Feb 2021 09:58:04 +0100
Subject: [PATCH] Force signed char on all GCC platforms

---
 CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index cd44e06eb..517561a9a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -102,6 +102,10 @@ if (MINGW)
     add_compile_options(-Wa,-mbig-obj)
 endif ()
 
+if (NOT MSVC)
+    add_compile_options(-fsigned-char)
+endif ()
+
 # Display and check CMAKE_PREFIX_PATH
 message(STATUS "SLIC3R_STATIC: ${SLIC3R_STATIC}")
 if (NOT "${CMAKE_PREFIX_PATH}" STREQUAL "")