patch 9.0.0857: selecting MSVC 2017 does not set $PLATFORM
Problem: Selecting MSVC 2017 does not set $PLATFORM.
Solution: Use $VSCMD_ARG_TGT_ARCH. (Ken Takata, closes #11485)
diff --git a/src/Make_mvc.mak b/src/Make_mvc.mak
index 028277a..639ae2f 100644
--- a/src/Make_mvc.mak
+++ b/src/Make_mvc.mak
@@ -222,8 +222,12 @@
! endif
! else # !CPU
CPU = i386
-! if !defined(PLATFORM) && defined(TARGET_CPU)
+! ifndef PLATFORM
+! ifdef TARGET_CPU
PLATFORM = $(TARGET_CPU)
+! elseif defined(VSCMD_ARG_TGT_ARCH)
+PLATFORM = $(VSCMD_ARG_TGT_ARCH)
+! endif
! endif
! ifdef PLATFORM
! if ("$(PLATFORM)" == "x64") || ("$(PLATFORM)" == "X64")
diff --git a/src/version.c b/src/version.c
index 50f6709..19f0692 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
+ 857,
+/**/
856,
/**/
855,