support version-specific dlb file

There was a post-3.6.2 discussion on a forum where someone had
tried to copy the NetHack 3.6.2 exe file overtop of an
existing NetHack 3.6.0 playground, and then try to run it.

We have never suggested trying that, nor do we attempt to
provide any backward or forward compatibility between the
supporting files found in nhdat that would allow that. Any
particular version of NetHack expects to have matching
support files designed and matched to that version.

This adds optional support for helping to prevent the
opening of nhdat containing support files from an
unmatched version of NetHack.

If you #define VERSION_IN_DLB_FILENAME in your
platform's include/*conf.h file, it will use a
name such as nhdat362, instead of plain nhdat, and
will exit more gracefully than the fault/crash
mentioned in the discussion if it doesn't find the
file it is looking for.

Developers - please note that if you do
to cause NetHack to look for an nhdat* file with
the version info appended to the name, you will likely
have to modify your build/clean/spotless mechanics
beyond the C compile itself to properly deal with the
new generated file name.

include/dlb.h

@@ -37,7 +37,15 @@ typedef struct dlb_library {
 
 /* library definitions */
 #ifndef DLBFILE
+#ifndef VERSION_IN_DLB_FILENAME
 #define DLBFILE "nhdat" /* name of library */
+#else
+#define MAX_DLB_FILENAME 256
+#define DLBFILE dlbfilename
+#define DLBBASENAME "nhdat"
+extern char dlbfilename[MAX_DLB_FILENAME];
+extern char *FDECL(build_dlb_filename, (const char *));
+#endif
 #endif
 #ifndef FILENAME_CMP
 #define FILENAME_CMP strcmp /* case sensitive */

include/ntconf.h

@@ -43,6 +43,8 @@
 /* #define SHORT_FILENAMES */ /* All NT filesystems support long names now
  */
 
+#define VERSION_IN_DLB_FILENAME     /* Append version digits to nhdat */
+
 #ifdef MICRO
 #undef MICRO /* never define this! */
 #endif

src/dlb.c

@@ -4,6 +4,9 @@
 
 #include "config.h"
 #include "dlb.h"
+#if defined(VERSION_IN_DLB_FILENAME)
+#include "patchlevel.h"
+#endif
 
 #ifdef __DJGPP__
 #include <string.h>
@@ -38,6 +41,10 @@ typedef struct dlb_procs {
     long FDECL((*dlb_ftell_proc), (DLB_P));
 } dlb_procs_t;
 
+#if defined(VERSION_IN_DLB_FILENAME)
+char dlbfilename[MAX_DLB_FILENAME];
+#endif
+
 /* without extern.h via hack.h, these haven't been declared for us */
 extern FILE *FDECL(fopen_datafile, (const char *, const char *, int));
 
@@ -240,7 +247,9 @@ lib_dlb_init(VOID_ARGS)
 {
     /* zero out array */
     (void) memset((char *) &dlb_libs[0], 0, sizeof(dlb_libs));
-
+#ifdef VERSION_IN_DLB_FILENAME
+    build_dlb_filename((const char *) 0);
+#endif
     /* To open more than one library, add open library calls here. */
     if (!open_library(DLBFILE, &dlb_libs[0]))
         return FALSE;
@@ -263,6 +272,17 @@ lib_dlb_cleanup(VOID_ARGS)
         close_library(&dlb_libs[i]);
 }
 
+#ifdef VERSION_IN_DLB_FILENAME
+char *
+build_dlb_filename(lf)
+const char *lf;
+{
+    Sprintf(dlbfilename, "%s%d%d%d",
+            lf ? lf : DLBBASENAME, VERSION_MAJOR, VERSION_MINOR, PATCHLEVEL);
+    return dlbfilename;
+}
+#endif
+
 /*ARGSUSED*/
 STATIC_OVL boolean
 lib_dlb_fopen(dp, name, mode)

sys/winnt/Makefile.msc

@@ -671,7 +671,7 @@ install: $(O)envchk.tag $(O)obj.tag $(O)utility.tag $(GAMEDIR)\NetHack.exe $(GAM
 $(O)install.tag: 	$(DAT)\data	$(DAT)\rumors	 $(DAT)\dungeon \
 	 	$(DAT)\oracles	$(DAT)\quest.dat $(O)sp_lev.tag $(DLB)
 ! IF ("$(USE_DLB)"=="Y")
-	copy nhdat                $(GAMEDIR)
+	copy nhdat*               $(GAMEDIR)
 	copy $(DAT)\license       $(GAMEDIR)
 	copy $(DAT)\opthelp       $(GAMEDIR)
 ! ELSE
@@ -1279,7 +1279,7 @@ spotless: clean
 	if exist $(GAMEDIR)\nhraykey.dll del $(GAMEDIR)\nhraykey.dll
 	if exist $(GAMEDIR)\NetHack.exe  del $(GAMEDIR)\NetHack.exe
 	if exist $(GAMEDIR)\NetHack.pdb  del $(GAMEDIR)\NetHack.pdb
-	if exist $(GAMEDIR)\nhdat        del $(GAMEDIR)\nhdat
+	if exist $(GAMEDIR)\nhdat*       del $(GAMEDIR)\nhdat*
 ! ENDIF
 	if exist $(INCL)\date.h          del $(INCL)\date.h
 	if exist $(INCL)\onames.h        del $(INCL)\onames.h
@@ -1332,7 +1332,7 @@ spotless: clean
 	if exist $(DAT)\porthelp	 del $(DAT)\porthelp
 	if exist $(O)sp_lev.tag	         del $(O)sp_lev.tag
 	if exist $(SRC)\vis_tab.c        del $(SRC)\vis_tab.c
-	if exist nhdat.			 del nhdat.
+	if exist nhdat*.	         del nhdat*.
 	if exist $(O)obj.tag             del $(O)obj.tag
 	if exist $(O)gamedir.tag         del $(O)gamedir.tag
 	if exist $(O)nh*key.lib          del $(O)nh*key.lib

util/dlb_main.c

@@ -198,6 +198,9 @@ char **argv;
             if (ap == argc)
                 usage();
             library_file = argv[ap++];
+#ifdef VERSION_IN_DLB_FILENAME
+            library_file = build_dlb_filename(library_file);
+#endif
             if (fseen)
                 printf("Warning: multiple f options.  Previous ignored.\n");
             fseen = 1;

win/win32/vs2017/NetHack.sln

@@ -80,6 +80,11 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "nhraykey", "nhraykey.vcxpro
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "PDCurses", "PDCurses.vcxproj", "{BAA70D0F-3EC7-4D10-91F0-974F1F49308B}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{477BF231-48E0-4312-AA12-9D8576215489}"
+	ProjectSection(SolutionItems) = preProject
+		NetHackProperties.props = NetHackProperties.props
+	EndProjectSection
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Win32 = Debug|Win32
@@ -204,4 +209,7 @@ Global
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {6DF8F690-552A-4329-8FAB-DD447071A473}
+	EndGlobalSection
 EndGlobal

win/win32/vs2017/NetHack.vcxproj

@@ -9,6 +9,18 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
   <Import Project="console.props" />
   <Import Project="common.props" />
   <Import Project="dirs.props" />
@@ -19,12 +31,12 @@
   <ItemDefinitionGroup Condition="Exists('$(PDCURSES)')">
     <ClCompile>
       <AdditionalIncludeDirectories>$(PDCURSES);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-	  <PreprocessorDefinitions>CURSES_GRAPHICS;CHTYPE_32;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>CURSES_GRAPHICS;CHTYPE_32;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
-	<Link>
+    <Link>
       <AdditionalLibraryDirectories>$(ToolsDir)</AdditionalLibraryDirectories>
       <AdditionalDependencies>PDCurses.lib;%(AdditionalDependencies)</AdditionalDependencies>
-	  </Link>
+    </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup>
     <ClCompile>

win/win32/vs2017/NetHackProperties.props

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ImportGroup Label="PropertySheets" />
+  <PropertyGroup Label="UserMacros">
+    <VERSION_MAJOR>3</VERSION_MAJOR>
+    <VERSION_MINOR>6</VERSION_MINOR>
+    <PATCHLEVEL>3</PATCHLEVEL>
+  </PropertyGroup>
+  <PropertyGroup />
+  <ItemDefinitionGroup />
+  <ItemGroup>
+    <BuildMacro Include="VERSION_MAJOR">
+      <Value>$(VERSION_MAJOR)</Value>
+      <EnvironmentVariable>true</EnvironmentVariable>
+    </BuildMacro>
+    <BuildMacro Include="VERSION_MINOR">
+      <Value>$(VERSION_MINOR)</Value>
+      <EnvironmentVariable>true</EnvironmentVariable>
+    </BuildMacro>
+    <BuildMacro Include="PATCHLEVEL">
+      <Value>$(PATCHLEVEL)</Value>
+      <EnvironmentVariable>true</EnvironmentVariable>
+    </BuildMacro>
+  </ItemGroup>
+</Project>

win/win32/vs2017/NetHackW.vcxproj

@@ -8,6 +8,18 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
   <Import Project="common.props" />
   <Import Project="dirs.props" />
   <Import Project="files.props" />

win/win32/vs2017/afterdlb.proj

@@ -3,7 +3,7 @@
   <Import Project="files.props"/>
   <Target Name="Build"
 	Inputs="$(ToolsDir)dlb.exe;@(DlbList);$(SysWinntDir)porthelp"
-	Outputs="$(BinDir)nhdat">
+	Outputs="$(BinDir)nhdat$(VERSION_MAJOR)$(VERSION_MINOR)$(PATCHLEVEL)">
 
  	<Copy SourceFiles="$(SysWinntDir)porthelp" DestinationFolder="$(DatDir)"/>
 	<WriteLinesToFile File="$(DatDir)dlb.lst" Lines="@(DlbList->'%(filename)%(extension)')" Overwrite="true"/>
@@ -12,6 +12,6 @@
 
 	</Target>
   <Target Name="Clean">
-	<Delete Files="$(BinDir)nhdat"/>
+	<Delete Files="$(BinDir)nhdat$(VERSION_MAJOR)$(VERSION_MINOR)$(PATCHLEVEL)"/>
   </Target>
 </Project>

win/win32/vs2017/dgncomp.vcxproj

@@ -7,6 +7,18 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
   <Import Project="console.props" />
   <Import Project="common.props" />
   <Import Project="dirs.props" />

win/win32/vs2017/dlb.vcxproj

@@ -7,6 +7,18 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
   <Import Project="console.props" />
   <Import Project="common.props" />
   <Import Project="dirs.props" />

win/win32/vs2017/levcomp.vcxproj

@@ -7,6 +7,18 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
   <Import Project="console.props" />
   <Import Project="common.props" />
   <Import Project="dirs.props" />

win/win32/vs2017/makedefs.vcxproj

@@ -7,6 +7,18 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
   <Import Project="console.props" />
   <Import Project="common.props" />
   <Import Project="dirs.props" />

win/win32/vs2017/nh340key.vcxproj

@@ -9,6 +9,18 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="default_dll.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
   <Import Project="dll.props" />
   <Import Project="common.props" />
   <Import Project="dirs.props" />

win/win32/vs2017/nhdefkey.vcxproj

@@ -9,6 +9,18 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="default_dll.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
   <Import Project="dll.props" />
   <Import Project="common.props" />
   <Import Project="dirs.props" />

win/win32/vs2017/nhraykey.vcxproj

@@ -9,6 +9,18 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="default_dll.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
   <Import Project="dll.props" />
   <Import Project="common.props" />
   <Import Project="dirs.props" />

win/win32/vs2017/recover.vcxproj

@@ -7,6 +7,18 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
   <Import Project="console.props" />
   <Import Project="common.props" />
   <Import Project="dirs.props" />

win/win32/vs2017/tile2bmp.vcxproj

@@ -7,6 +7,18 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
   <Import Project="console.props" />
   <Import Project="common.props" />
   <Import Project="dirs.props" />

win/win32/vs2017/tilemap.vcxproj

@@ -7,6 +7,18 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
   <Import Project="console.props" />
   <Import Project="common.props" />
   <Import Project="dirs.props" />

win/win32/vs2017/uudecode.vcxproj

@@ -7,6 +7,18 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="NetHackProperties.props" />
+  </ImportGroup>
   <Import Project="console.props" />
   <Import Project="common.props" />
   <Import Project="dirs.props" />