Add dev directory during setup

installer/install.iss

@@ -117,6 +117,9 @@ Source: {#SourcePath}\NOTICE.txt; DestDir: {app}; Flags: replacesameversion; Aft
 Source: {#SourcePath}\..\edit-git-bash.exe; Flags: dontcopy
 
 [Dirs]
+Name: "{app}\dev"
+Name: "{app}\dev\mqueue"
+Name: "{app}\dev\shm"
 Name: "{app}\tmp"
 
 [Icons]
@@ -2318,6 +2321,52 @@ begin
         LogError(ExpandConstant('Line {#__LINE__}: Unable to remove the Git for Windows updater (output: '+ReadFileAsString(LogPath)+', errors: '+ReadFileAsString(ErrPath)+').'));
 end;
 
+{
+    Create Cygwin's idea of a symbolic link:
+    - a system file
+    - starting with the prefix `!<symlink>\xff\xfe`
+    - followed by the symlink target, in UTF-16
+    - ending in two NUL bytes (reflecting a UTF-16 NUL)
+}
+
+function GetFileAttributes(Path:PAnsiChar):DWORD;
+ external '[email protected] stdcall';
+
+function SetFileAttributes(Path:PAnsiChar;dwFileAttributes:DWORD):BOOL;
+external '[email protected] stdcall';
+
+function CreateCygwinSymlink(SymlinkPath,TargetPath:String):Boolean;
+var
+    Attribute:DWord;
+    i:Integer;
+begin
+    Result:=True;
+
+    // assuming that the target is actually all-ASCII, convert to UTF-16
+    for i:=Length(TargetPath) downto 1 do
+        TargetPath:=Copy(TargetPath,1,i)+#0+Copy(TargetPath,i+1,Length(TargetPath)-i);
+
+    // insert `!<symlink>\xff\xfe` prefix, and append `\0\0`
+    TargetPath:='!<symlink>'+#255+#254+TargetPath+#0+#0;
+
+    // write the file
+    if not SaveStringToFile(SymlinkPath,TargetPath,False) then begin
+        LogError('Could not write "'+SymlinkPath+'"');
+        Result:=False;
+    end;
+
+    // Set system bit (required for Cygwin to interpret this as a symlink)
+    Attribute:=GetFileAttributes(SymlinkPath);
+    if (Attribute and 4) = 0  then
+    begin
+        Attribute:=Attribute or 4;
+        if not SetFileAttributes(SymlinkPath,Attribute) then begin
+            LogError('Could not mark "'+SymlinkPath+'" as system file');
+            Result:=False;
+        end;
+    end;
+end;
+
 procedure CurStepChanged(CurStep:TSetupStep);
 var
     ProgramData,DllPath,FileName,Cmd,Msg,Ico:String;
@@ -2361,6 +2410,15 @@ begin
 
     MaybeHardlinkDLLFiles();
 
+    {
+        Create the symlinks in `/dev/`
+    }
+
+    CreateCygwinSymlink(AppDir+'\dev\fd','/proc/self/fd');
+    CreateCygwinSymlink(AppDir+'\dev\stdin','/proc/self/fd/0');
+    CreateCygwinSymlink(AppDir+'\dev\stdout','/proc/self/fd/1');
+    CreateCygwinSymlink(AppDir+'\dev\stderr','/proc/self/fd/2');
+
     {
         Create the built-ins
     }

installer/release.sh

@@ -39,6 +39,7 @@ do
 			exit 1
 		fi
 		inno_defines="$inno_defines$LF#define DEBUG_WIZARD_PAGE '$page'$LF#define OUTPUT_TO_TEMP ''"
+		inno_defines="$inno_defines$LF[Code]${LF}function SetSystemConfigDefaults():Boolean;${LF}begin${LF}    Result:=True;${LF}end;${LF}${LF}"
 		skip_files=t
 		;;
 	--output=*)

nuget/GitForWindows.nuspec.in

@@ -23,6 +23,9 @@
     <file src="$buildextra$\ReleaseNotes.css" target="content" />
     <file src="$buildextra$\nuget\Install.ps1" target="tools" />
     <file src="$buildextra$\post-install.bat" target="tools" />
+    <file src="$buildextra$\emptydir" target="tools\dev" />
+    <file src="$buildextra$\emptydir" target="tools\dev\mqueue" />
+    <file src="$buildextra$\emptydir" target="tools\dev\shm" />
     <file src="$buildextra$\nuget\package-versions.txt" target="tools\etc" />
     @@FILELIST@@
   </files>

nuget/release.sh

@@ -91,6 +91,9 @@ sed -e "s/@@VERSION@@/$VERSION/g" -e "s/@@AUTHOR@@/$AUTHOR/g" \
 	-e "s/@@VERSIONTAG@@/$VERSIONTAG/g" \
 	-e "s/@@ID@@/$ID/g" -e '/@@FILELIST@@/,$d' <"$SPECIN" >"$SPEC"
 
+mkdir -p "$BUILDEXTRA/emptydir" ||
+die "Could not generate empty directory."
+
 # Make a list of files to include
 LIST="$(ARCH=$ARCH BITNESS=$BITNESS \
 	PACKAGE_VERSIONS_FILE="$BUILDEXTRA"/nuget/package-versions.txt \

portable/release.sh

@@ -70,6 +70,12 @@ esac
 cp "$SCRIPT_PATH/../LICENSE.txt" "$SCRIPT_PATH/root/" ||
 die "Could not copy license file"
 
+mkdir -p "$SCRIPT_PATH/root/dev/mqueue" ||
+die "Could not make /dev/mqueue directory"
+
+mkdir -p "$SCRIPT_PATH/root/dev/shm" ||
+die "Could not make /dev/shm/ directory"
+
 mkdir -p "$SCRIPT_PATH/root/etc" ||
 die "Could not make etc/ directory"