The following declaration is not accepted. Compiler complains "Error: basic type expected, not version".
It can be worked around by versioning the entire enum declaration (code duplication) or string mixin (ugly).

enum snd_pcm_format_t
{
	UNKNOWN = -1,
	S8 = 0,
	U8,
	S16_LE,
	S16_BE,
	U16_LE,
	U16_BE,
	S24_LE,
	S24_BE,
	U24_LE,
	U24_BE,
	S32_LE,
	S32_BE,
	U32_LE,
	U32_BE,
	FLOAT_LE,
	FLOAT_BE,
	FLOAT64_LE,
	FLOAT64_BE,
	IEC958_SUBFRAME_LE,
	IEC958_SUBFRAME_BE,
	MU_LAW,
	A_LAW,
	IMA_ADPCM,
	MPEG,
	GSM,
	SPECIAL = 31,
	S24_3LE = 32,
	S24_3BE,
	U24_3LE,
	U24_3BE,
	S20_3LE,
	S20_3BE,
	U20_3LE,
	U20_3BE,
	S18_3LE,
	S18_3BE,
	U18_3LE,
	U18_3BE,
	G723_24,
	G723_24_1B,
	G723_40,
	G723_40_1B,
	DSD_U8,
	DSD_U16_LE,
	LAST = DSD_U16_LE,

	version(LittleEndian)
	{
		S16 = S16_LE,
		U16 = U16_LE,
		S24 = S24_LE,
		U24 = U24_LE,
		S32 = S32_LE,
		U32 = U32_LE,
		FLOAT = FLOAT_LE,
		FLOAT64 = FLOAT64_LE,
		IEC958_SUBFRAME = IEC958_SUBFRAME_LE
	}
	else version(BigEndian)
	{
		S16 = S16_BE,
		U16 = U16_BE,
		S24 = S24_BE,
		U24 = U24_BE,
		S32 = S32_BE,
		U32 = U32_BE,
		FLOAT = FLOAT_BE,
		FLOAT64 = FLOAT64_BE,
		IEC958_SUBFRAME = IEC958_SUBFRAME_BE
	}
	else
	{
		static assert(0, "Unknown endian");
	}
}