I'm on the latest HEAD of dmd (version 2.064). 
Version of VS is Visual Studio 2010 Ultimate. 
I'm building with Build -> Build Solution (F6)
however, building fails with errors: 

Error	1	error C3861: 'strtold': identifier not found	G:\Programs\dmd2\src\dmd\src\expression.c	2985	1	dmd_msc
Error	2	error C3861: 'strtold': identifier not found	G:\Programs\dmd2\src\dmd\src\lexer.c	2356	1	dmd_msc
Error	3	error C3861: 'strtof': identifier not found	G:\Programs\dmd2\src\dmd\src\lexer.c	2367	1	dmd_msc
Error	4	error C3861: 'alloca': identifier not found	G:\Programs\dmd2\src\dmd\src\link.c	719	1	dmd_msc
Warning	5	warning C4805: '!=' : unsafe mix of type 'char' and type 'bool' in operation	G:\Programs\dmd2\src\dmd\src\mars.c	983	1	dmd_msc
Error	6	error C3861: 'alloca': identifier not found	G:\Programs\dmd2\src\dmd\src\tocsym.c	127	1	dmd_msc
Error	7	error C3861: 'alloca': identifier not found	G:\Programs\dmd2\src\dmd\src\tocsym.c	731	1	dmd_msc
Error	8	error C3861: 'alloca': identifier not found	G:\Programs\dmd2\src\dmd\src\tocvdebug.c	304	1	dmd_msc
Error	9	error C3861: 'alloca': identifier not found	G:\Programs\dmd2\src\dmd\src\tocvdebug.c	336	1	dmd_msc
Error	10	error C3861: 'alloca': identifier not found	G:\Programs\dmd2\src\dmd\src\tocvdebug.c	517	1	dmd_msc
Error	11	error C3861: 'alloca': identifier not found	G:\Programs\dmd2\src\dmd\src\tocvdebug.c	744	1	dmd_msc
Warning	12	warning C4715: 'Target::critsecsize' : not all control paths return a value	g:\programs\dmd2\src\dmd\src\target.c	150	1	dmd_msc
Warning	13	warning C4700: uninitialized local variable 'i' used	g:\programs\dmd2\src\dmd\src\backend\cgcod.c	2202	1	dmd_msc
Warning	14	warning C4805: '==' : unsafe mix of type 'bool' and type 'int' in operation	G:\Programs\dmd2\src\dmd\src\backend\divcoeff.c	284	1	dmd_msc
Error	15	error C1083: Cannot open source file: 'root\array.c': No such file or directory	G:\Programs\dmd2\src\dmd\src\c1xx	dmd_msc