Fix 64bit .lib generation on windows

configure.ac

@@ -85,11 +85,18 @@ AM_CONDITIONAL([STARPU_HAVE_WINDOWS], [test "x$starpu_windows" = "xyes"])
 # on Darwin, GCC targets i386 by default, so we don't have atomic ops
 AC_CHECK_SIZEOF([void *])
 SIZEOF_VOID_P=$ac_cv_sizeof_void_p
-if test x$SIZEOF_VOID_P = x4; then
-	case "$target" in
-	i386-*darwin*) CFLAGS+=" -march=i686 " ;;
-	esac
-fi
+case $SIZEOF_VOID_P in
+	4)
+		case "$target" in
+		i386-*darwin*) CFLAGS+=" -march=i686 " ;;
+		esac
+		STARPU_MS_LIB_ARCH=X86
+		;;
+	8)
+		STARPU_MS_LIB_ARCH=X64
+		;;
+esac
+AC_SUBST(STARPU_MS_LIB_ARCH)
 
 # This will be useful for program which use CUDA (and .cubin files) which need
 # some path to the CUDA code at runtime.

src/Makefile.am

@@ -1,6 +1,6 @@
 # StarPU --- Runtime system for heterogeneous multicore architectures.
 #
-# Copyright (C) 2009, 2010, 2011  Université de Bordeaux 1
+# Copyright (C) 2009-2012  Université de Bordeaux 1
 # Copyright (C) 2010, 2011, 2012  Centre National de la Recherche Scientifique
 #
 # StarPU is free software; you can redistribute it and/or modify
@@ -31,7 +31,7 @@ ldflags += -Xlinker --output-def -Xlinker .libs/libstarpu-@STARPU_EFFECTIVE_VERS
 
 if STARPU_HAVE_MS_LIB
 .libs/libstarpu-@STARPU_EFFECTIVE_VERSION@.lib: libstarpu-@STARPU_EFFECTIVE_VERSION@.la dolib
-	./dolib "$(STARPU_MS_LIB)" X86 .libs/libstarpu-@STARPU_EFFECTIVE_VERSION@.def libstarpu-0 .libs/libstarpu-@STARPU_EFFECTIVE_VERSION@.lib
+	./dolib "$(STARPU_MS_LIB)" $(STARPU_MS_LIB_ARCH) .libs/libstarpu-@STARPU_EFFECTIVE_VERSION@.def libstarpu-0 .libs/libstarpu-@STARPU_EFFECTIVE_VERSION@.lib
 all-local: .libs/libstarpu-@STARPU_EFFECTIVE_VERSION@.lib
 endif STARPU_HAVE_MS_LIB