Fix [00189c4afcb9e2586301d711f71383e48817a72d|00189c4afc]: Allow semi-static UCRT build on Windows with VC 14.0

3 files changed, 30 insertions, 2 deletions

diff --git a/generic/tclMain.c b/generic/tclMain.c
index 5e5109b..b2206f8 100644
--- a/generic/tclMain.c
+++ b/generic/tclMain.c
@@ -28,7 +28,10 @@
  * source directory to make their own modified versions).
  */
 
+#if defined _MSC_VER && _MSC_VER < 1900
+/* isatty is always defined on MSVC 14.0, but not necessarily as CRTIMPORT. */
 extern CRTIMPORT int	isatty(int fd);
+#endif
 
 static Tcl_Obj *tclStartupScriptPath = NULL;
 static Tcl_Obj *tclStartupScriptEncoding = NULL;
diff --git a/win/makefile.vc b/win/makefile.vc
index 1f957ea..24a92ba 100644
--- a/win/makefile.vc
+++ b/win/makefile.vc
@@ -70,7 +70,7 @@ the build instructions.
 #		Sets where to install Tcl from the built binaries.

 #		C:\Progra~1\Tcl is assumed when not specified.

 #

-#	OPTS=loimpact,msvcrt,static,staticpkg,symbols,threads,profile,unchecked,none

+#	OPTS=loimpact,msvcrt,static,staticpkg,symbols,threads,profile,unchecked,ucrt,none

 #		Sets special options for the core.  The default is for none.

 #		Any combination of the above may be used (comma separated).

 #		'none' will over-ride everything to nothing.

@@ -94,6 +94,11 @@ the build instructions.
 #		unchecked = Allows a symbols build to not use the debug

 #			   enabled runtime (msvcrt.dll not msvcrtd.dll

 #			   or libcmt.lib not libcmtd.lib).

+#		ucrt= Uses ucrt.lib and libvcruntime.lib, which

+#			   ensures Tcl will run on machines with only the subset

+#			   of the C runtime that is part of the operating system.

+#			   If omitted, builds with VC 14.0 or later will require

+#			   the full C runtime redistributable.

 #

 #	STATS=compdbg,memdbg,none

 #		Sets optional memory and bytecode compiler debugging code added

@@ -438,7 +443,13 @@ cdebug	= -Zi -WX $(DEBUGFLAGS)
 cwarn = $(WARNINGS) -D _CRT_SECURE_NO_DEPRECATE -D _CRT_NONSTDC_NO_DEPRECATE

 cflags = -nologo -c $(COMPILERFLAGS) $(cwarn) -Fp$(TMP_DIR)^\

 

-!if $(MSVCRT)

+!if $(UCRT)

+!if $(DEBUG) && !$(UNCHECKED)

+crt = -MDd

+!else

+crt = -MT

+!endif

+!elseif $(MSVCRT)

 !if $(DEBUG) && !$(UNCHECKED)

 crt = -MDd

 !else

@@ -480,6 +491,10 @@ lflags	= -nologo -machine:$(MACHINE) $(LINKERFLAGS) $(ldebug)
 lflags	= $(lflags) -profile

 !endif

 

+!if $(UCRT) && !($(DEBUG) && !$(UNCHECKED))

+lflags	= $(lflags) -nodefaultlib:libucrt.lib

+!endif

+

 !if $(ALIGN98_HACK) && !$(STATIC_BUILD)

 ### Align sections for PE size savings.

 lflags	= $(lflags) -opt:nowin98

@@ -504,6 +519,9 @@ baselibs   = kernel32.lib user32.lib ws2_32.lib
 baselibs   = $(baselibs) bufferoverflowU.lib

 !endif

 !endif

+!if $(UCRT) && !($(DEBUG) && !$(UNCHECKED))

+baselibs   = $(baselibs) ucrt.lib

+!endif

 

 #---------------------------------------------------------------------

 # TclTest flags

diff --git a/win/rules.vc b/win/rules.vc
index 78a167a..9247c59 100644
--- a/win/rules.vc
+++ b/win/rules.vc
@@ -223,6 +223,7 @@ LOIMPACT	= 0
 TCL_USE_STATIC_PACKAGES	= 0

 USE_THREAD_ALLOC = 0

 UNCHECKED	= 0

+UCRT		= 0

 !else

 !if [nmakehlp -f $(OPTS) "static"]

 !message *** Doing static

@@ -302,6 +303,12 @@ UNCHECKED = 1
 UNCHECKED = 0

 !endif

 !endif

+!if [nmakehlp -f $(OPTS) "ucrt"] && $(VCVERSION) >= 1900

+!message *** Doing UCRT

+UCRT = 1

+!else

+UCRT = 0

+!endif

 

 #----------------------------------------------------------

 # Figure-out how to name our intermediate and output directories.