--- host/hackrf-tools/CMakeLists.txt.orig	2020-10-13 21:46:30 UTC
+++ host/hackrf-tools/CMakeLists.txt
@@ -33,7 +33,7 @@ include_directories(getopt)
 add_definitions(/D _CRT_SECURE_NO_WARNINGS)
 else()
 add_definitions(-Wall)
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu90")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
 endif()
 
 if(NOT libhackrf_SOURCE_DIR)
