add flags

Makefile

-CXXFLAGS=-std=gnu++17 -pipe -Wall -Wextra -Wpedantic -Werror -Wno-overlength-strings -Wno-unused-parameter -Wformat -Wformat-security -Wformat-nonliteral -Wredundant-decls -Wuninitialized -Winit-self -Wcast-qual -Wstrict-overflow -Wmultichar -Wundef -fno-strict-aliasing -fexceptions -fstack-protector-strong -fstack-clash-protection -ffunction-sections -fdata-sections -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-math-errno -O3 -flto -fno-fat-lto-objects -Wshadow -Wconversion -fvisibility=hidden
+CXXFLAGS=-std=gnu++17 -pipe -Wall -Wextra -Wpedantic -Werror -Wno-static-in-inline -Wno-overlength-strings -Wno-unused-parameter -Wformat -Wformat-security -Wformat-nonliteral -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wuninitialized -Winit-self -Wcast-qual -Wstrict-overflow -Wnested-externs -Wmultichar -Wundef -fno-strict-aliasing -fexceptions -fstack-protector-strong -fstack-clash-protection -fcf-protection -ffunction-sections -fdata-sections -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-math-errno -O3 -flto -fno-fat-lto-objects -Wshadow -Wconversion -fvisibility=hidden
 LIBS=-lmavsdk
 
 LIB_NAME := libautopilotwrapper.so