--- host/libhackrf/CMakeLists.txt.orig	2020-10-13 21:46:30 UTC
+++ host/libhackrf/CMakeLists.txt
@@ -37,7 +37,7 @@ if(MSVC)
 	set(THREADS_USE_PTHREADS_WIN32 true)
 else()
 	add_definitions(-Wall)
-	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu90")
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
 
 	INCLUDE(TestBigEndian)
 	TEST_BIG_ENDIAN(BIGENDIAN)
