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-rw-r--r--CMakeLists.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt
index c40767d20..1fee887e7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -60,6 +60,9 @@ else()
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -std=c++11")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -std=c++11")
endif()
+
+ # We use a signed char (fixes #640 on RasPi)
+ add_flags_cxx("-fsigned-char")
endif()