Originally committed as revision 11811 to svn://svn.ffmpeg.org/ffmpeg/trunk
check_cflags -Wredundant-decls
check_cflags -Wno-pointer-sign
check_cflags -Wcast-qual
check_cflags -Wredundant-decls
check_cflags -Wno-pointer-sign
check_cflags -Wcast-qual
-check_cflags -Werror=declaration-after-statement
-check_cflags -Werror=pointer-arith
enabled extra_warnings && check_cflags -Winline
# add some linker flags
enabled extra_warnings && check_cflags -Winline
# add some linker flags