--- ray/platform/Windows_64.cfg	2016/03/10 17:36:18	1.2
+++ ray/platform/Windows_64.cfg	2018/01/08 13:38:37	1.5
@@ -1,4 +1,4 @@
-# platform specific settings for Windows 64 bit (VC 2015)
+# platform specific settings for Windows 64 bit (VC 2017)
 
 # where you want everything
 [install]
@@ -9,15 +9,15 @@ RAD_MANDIR:    share\man
 
 # shouldn't need any changes other than for the Tifflib location
 [build]
-CPPDEFINES: _WIN64 NDEBUG _CONSOLE _MBCS HDSUF=.exe _CRT_SECURE_NO_WARNINGS RT_WINPROC
-CCFLAGS:    /W2 /Gy /O2 /MD /c /EHsc /wd4244 /wd4305
+CPPDEFINES: _WIN64 NDEBUG _CONSOLE _MBCS RT_WINPROC HDSUF=.exe _CRT_SECURE_NO_WARNINGS
+CCFLAGS:   /MD /W2 /Gy /O2 /c /EHsc /wd4244 /wd4305
 LINKFLAGS:  /INCREMENTAL:NO /OPT:REF,ICF
 #TIFFINCLUDE: C:\Users\gm\Downloads\dev\tiff-4.0.6\libtiff
 #TIFFLIB: C:\Users\gm\Downloads\dev\tiff-4.0.6\libtiff
 
 [debug]
-CPPDEFINES: _WIN64 _DEBUG _CONSOLE _MBCS _CRT_SECURE_NO_WARNINGS RT_WINPROC HDSUF=.exe 
-CCFLAGS:    /W2 /Gy /Od /Zi /c /EHsc /wd4244 /wd4305 /Fd"{RAD_BUILDOBJ}\radiance.pdb"
+CPPDEFINES: _WIN64 _DEBUG _CONSOLE _MBCS RT_WINPROC HDSUF=.exe  _CRT_SECURE_NO_WARNINGS
+CCFLAGS:  /MDd /W3 /Gy /Od /Zi /c /EHsc /Fd"{RAD_BUILDOBJ}\radiance.pdb" /wd4244 /wd4305
 LINKFLAGS:  /DEBUG /INCREMENTAL:NO
 #TIFFINCLUDE: C:\Users\gm\Downloads\dev\tiff-4.0.6\libtiff
 #TIFFLIB: C:\Users\gm\Downloads\dev\tiff-4.0.6\libtiff
@@ -25,7 +25,8 @@ LINKFLAGS:  /DEBUG /INCREMENTAL:NO
 # never touch below this
 [code]
 RAD_ARGSCOMPAT: fixargv0.c 
-RAD_MATHCOMPAT: erf.c
+# VC 2015 includes erf() and erfc()
+# RAD_MATHCOMPAT: erf.c
 RAD_NETCOMPAT: win_netproc.c
 RAD_PROCESS: win_process.c win_popen.c
 RAD_PCALLS: raypwin.c