Fix compile error caused by inline instructions

Issue: https://github.com/AlexandreRouma/SDRPlusPlus/issues/82
Fix: https://stackoverflow.com/questions/54654290/error-inlining-failed-to-call-always-inline

falcon9_decoder/CMakeLists.txt

@@ -12,6 +12,8 @@ file(GLOB_RECURSE SRC "src/*.cpp" "src/*.c")
 include_directories("src/")
 include_directories("src/libcorrect/")
 
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -march=native")
+
 add_library(falcon9_decoder SHARED ${SRC})
 target_link_libraries(falcon9_decoder PRIVATE sdrpp_core)
 set_target_properties(falcon9_decoder PROPERTIES PREFIX "")