- AC_ADD_GCC_CFLAGS([-W])
- AC_ADD_GCC_CFLAGS([-Wshadow -Wpointer-arith -Wbad-function-cast])
- AC_ADD_GCC_CFLAGS([-Wcast-align -Wwrite-strings -Waggregate-return])
- AC_ADD_GCC_CFLAGS([-Wmissing-prototypes -Wstrict-prototypes])
- AC_ADD_GCC_CFLAGS([-pedantic])
- AC_ADD_GCC_CFLAGS([-Wredundant-decls])
-