From c38801e6486ea9d5b4916451a5ea2442100d17b6 Mon Sep 17 00:00:00 2001
From: Matt Blair <blair1618@gmail.com>
Date: Sun, 4 Oct 2020 23:08:46 -0400
Subject: [PATCH] Apply compiler flags from Harfbuzz CMake config

---
 CMakeLists.txt | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8578a43..445a482 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -363,14 +363,17 @@ set(HARFBUZZ_LIBRARIES
     CACHE INTERNAL "Harfbuzz libraries" FORCE)
 
 if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
-  target_compile_options(harfbuzz PRIVATE -utf-8 -wd4996 -wd4267 -wd4244)
+    target_compile_options(harfbuzz PRIVATE -utf-8 -wd4996 -wd4267 -wd4244)
 endif()
 
-if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-  target_compile_options(harfbuzz
-    PRIVATE
-    -Wno-vla-extension
-    -Wno-extended-offsetof)
+if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+    # Apply compiler flags from Harfbuzz CMake config.
+    target_compile_options(harfbuzz
+        PRIVATE
+        -fno-rtti
+        -fno-exceptions
+        -fno-threadsafe-statics
+    )
 endif()
 
 target_compile_definitions(harfbuzz PUBLIC