From 89df6720be8c54d56d64cbecd1440945ad6f5e64 Mon Sep 17 00:00:00 2001
From: Campbell Barton <ideasman42@gmail.com>
Date: Thu, 19 May 2016 07:36:32 +1000
Subject: CMake: use signed char for recastnavigation

External libraries may need char to be signed.
---
 build_files/cmake/macros.cmake | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'build_files')

diff --git a/build_files/cmake/macros.cmake b/build_files/cmake/macros.cmake
index 7f19e22c39e..239371c227c 100644
--- a/build_files/cmake/macros.cmake
+++ b/build_files/cmake/macros.cmake
@@ -1050,6 +1050,19 @@ macro(remove_strict_flags_file
 
 endmacro()
 
+# External libs may need 'signed char' to be default.
+macro(remove_cc_flag_unsigned_char)
+	if(CMAKE_C_COMPILER_ID MATCHES "^(GNU|Clang|Intel)$")
+		remove_cc_flag("-funsigned-char")
+	elseif(MSVC)
+		remove_cc_flag("/J")
+	else()
+		message(WARNING
+			"Compiler '${CMAKE_C_COMPILER_ID}' failed to disable 'unsigned char' flag."
+			"Build files need updating."
+		)
+	endif()
+endmacro()
 
 function(ADD_CHECK_C_COMPILER_FLAG
 	_CFLAGS
-- 
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