OMakeCFLAGS

open configure/Configure

CheckCFlag(flag) =
	CFLAGS += $(flag)
	program = $'int main(void) { return 0; }'
	return $(TryCompileC $(program))

static. =
	section
		DEVCFLAGS=$(EMPTY)
		Add_flags(flags)=
			CC=$(OCAMLC_CC)
			CFLAGS= $(OCAMLC_CC_CFLAGS) $(CFLAGS)
			foreach(f, $(flags))
				if $(CheckCFlag $(DEVCFLAGS) $(f))
					export
					DEVCFLAGS+= $(f)
				export
			export
		if $(not $(or $(equal $(getenv DEBUG_MY_CODE, $(EMPTY)), $(EMPTY)), $(or $(equal $(OCAMLC_SYSTEM),win32), $(equal $(OCAMLC_SYSTEM),win64))))
			Add_flags(-Wall -Wextra -O2 -g -Waggregate-return -Wbad-function-cast -Wdate-time -Wendif-labels -Werror=overflow -Wfloat-equal -Wformat=2 -Wformat-security -Wformat-nonliteral -Winit-self -Wlogical-op -Wmissing-declarations -Wmissing-include-dirs -Wmissing-prototypes -Wnested-externs -Wold-style-definition -Wpointer-arith -Wredundant-decls -Wshadow -Wsign-compare -Wstrict-prototypes -Wsuggest-attribute=noreturn -Wundef -Wuninitialized  -Wunused  -Wunused-macros -Wwrite-strings)
			CC=$(OCAMLC_CC)
			CFLAGS= $(OCAMLC_CC_CFLAGS) $(CFLAGS)
			if $(CheckCFlag $(DEVCFLAGS) -std=gnu11)
				DEVCFLAGS+= -std=gnu11
				export
			elseif $(CheckCFlag $(DEVCFLAGS) -std=gnu99)
				DEVCFLAGS+= -std=gnu99
				export
			export DEVCFLAGS
		export DEVCFLAGS

#DEVCFLAGS+=-DNDEBUG=1