Adhere to git://bitreich.org/bitreich-style/c/makefile-guideline.txt
71 * $CFLAGS: do not hard-code optimization flags like (-O2) or diagnostic flags
72 such as -Wall, -Wextra, -pedantic. Even more importantly, do not
73 specify unportable compiler flags.
74
75 * $LDFLAGS: do not hard-code linker flags like -s (symbol stripping) or -g,
76 -static or such flags.
Signed-off-by: Christoph Lohmann <20h@r-36.net>