[PATCH setup 2/2] Rename Start Menu folder for 32-bit installs on WoW64

[Jon Turney]

This is not totally straightforward: Since setup can install Cygwin with
either bitness (using the '--arch 32|64' option), we must do the right
thing if this is a 64-bit installer being used to install 32-bit Cygwin,
which will run under WoW, even if the installer isn't...

(Naming things like this makes things consistent with Cygwin-X, which
already names it's Start Menu folder 'Cygwin-X (32-bit)' on WoW64. It
also ensures that there aren't collisions between any setup created
shortcuts for 32-bit and 64-bits.)

The desktop icon is already named 'Cygwin Terminal' or 'Cygwin64
Terminal' so doesn't need attention.

Start menu links made in the 'Cygwin' folder by cygwin-doc, and possibly
other packages will also need adjusting.
---
 desktop.cc | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/desktop.cc b/desktop.cc
index eec8ca9..29dbf63 100644
--- a/desktop.cc
+++ b/desktop.cc
@@ -95,6 +95,14 @@ make_link (const std::string& linkpath,
 	       icon.c_str(), fname.c_str());
 }
 
+static const char *startmenudir()
+{
+  if (!is_64bit && (WowNativeMachine() != IMAGE_FILE_MACHINE_I386))
+    return "/Cygwin (32-bit)";
+  else
+    return "/Cygwin";
+}
+
 static void
 start_menu (const std::string& title, const std::string& target,
 	    const std::string& arg, const std::string& iconpath)
@@ -107,7 +115,7 @@ start_menu (const std::string& title, const std::string& target,
 			      issystem ? CSIDL_COMMON_PROGRAMS :
 			      CSIDL_PROGRAMS, &id);
   SHGetPathFromIDList (id, path);
-  strncat (path, "/Cygwin", MAX_PATH - strlen(path) - 1);
+  strncat (path, startmenudir(), MAX_PATH - strlen(path) - 1);
   LogBabblePrintf ("Program directory for program link: %s", path);
   make_link (path, title, target, arg, iconpath);
 }
@@ -194,7 +202,6 @@ save_icon (std::string &iconpath, const char *resource_name)
 #define TERMINALICON	"/Cygwin-Terminal.ico"
 #define TERMINALTITLE	(is_64bit ? "Cygwin64 Terminal" \
 				  : "Cygwin Terminal")
-#define STARTMENUDIR	"/Cygwin"
 
 static void
 do_desktop_setup ()
@@ -300,7 +307,7 @@ check_startmenu (const std::string title, const std::string target)
 			      CSIDL_PROGRAMS, &id);
   SHGetPathFromIDList (id, path);
   LogBabblePrintf ("Program directory for program link: %s", path);
-  strcat (path, STARTMENUDIR);
+  strcat (path, startmenudir());
   std::string fname = std::string(path) + "/" + title + ".lnk";
 
   if (_access (fname.c_str(), 0) == 0)
-- 
2.21.0