From 35acaa90c5ca7b868950301d7f601120e7018136 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Mon, 24 Feb 2020 12:10:07 -0500
Subject: bzip2: Add compilation flags to disable warnings in third-party code

---
 Utilities/cmbzip2/CMakeLists.txt | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Utilities/cmbzip2/CMakeLists.txt b/Utilities/cmbzip2/CMakeLists.txt
index 2aff69c..cb4a038 100644
--- a/Utilities/cmbzip2/CMakeLists.txt
+++ b/Utilities/cmbzip2/CMakeLists.txt
@@ -1,4 +1,13 @@
 project(bzip2)
+
+# Disable warnings to avoid changing 3rd party code.
+if(CMAKE_C_COMPILER_ID MATCHES
+    "^(GNU|Clang|AppleClang|XLClang|XL|VisualAge|SunPro|HP|Intel)$")
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w")
+elseif(CMAKE_C_COMPILER_ID STREQUAL "PathScale")
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -woffall")
+endif()
+
 add_definitions(-D_FILE_OFFSET_BITS=64)
 add_library(cmbzip2
   blocksort.c huffman.c crctable.c randtable.c compress.c decompress.c bzlib.c)
-- 
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