[Cmake] [bug] wrong CMAKE_COMMAND (win32)

[ebmiddlecamp@imation.com]

Is your Windows98 system running CYGWIN?  I've used WinNT+Cygwin without
any problems on this front..






Sebastien BARRE <sebastien at barre . nom . fr>@public.kitware.com on 08/31/2001
11:00:33 AM

Sent by:  cmake-admin at public . kitware . com


To:   cmake at public . kitware . com
cc:   Bill Hoffman <bill . hoffman at kitware . com>

Subject:  [Cmake] [bug] wrong CMAKE_COMMAND (win32)


Hi

First of all, I do apologize, I'm using Windows 98. I have to. I'm stuck
with it until I get a new computer at my new job :)

Anyway, I still have some work and while trying to reinstall all my
framework within Win98, I found the following problem, preventing me from
compiling VTK :

In cmake.cxx :

// at the end of this CMAKE_ROOT and CMAKE_COMMAND should be added to the
cache
void cmake::AddCMakePaths(const std::vector<std::string>& args)
{
   // Find our own executable.
   std::string cMakeSelf = args[0];
   cmSystemTools::ConvertToUnixSlashes(cMakeSelf);
[...]
   cmCacheManager::GetInstance()->AddCacheEntry
     ("CMAKE_COMMAND",
      cmSystemTools::EscapeSpaces(cMakeSelf.c_str()).c_str(),
[...]

The CMAKE_COMMAND holds the path to cmake.exe. Could you please remember me
why we need to convert to Unix Slashes ?

The problem is the following :

Once the above code has been run, here is my CMAKE_COMMAND (from the cache)
:

//Path to CMake executable.
CMAKE_COMMAND:INTERNAL="E:/SRC/KITWARE/CMAKE/SOURCE/cmake.exe"

(indeed, among all other .exe found in my cache (TCL_TCLSH, TK_WISH,
VTK_WRAP_TCL_EXE), CMAKE_COMMAND is the only one that was space-escaped).

Now it makes its way to the DSP files, for example :

"vtksbIOTCL.dsp" :  "$(SOURCE)" "$(INTDIR)" "$(OUTDIR)"
     "E:/SRC/KITWARE/CMAKE/SOURCE/cmake.exe"
D:/users/barre/devel/these/c++/vtknew/IO/CMakeLists.txt -DSP
-H"D:/users/barre/devel/these/c++/vtknew"
-S"D:/users/barre/devel/these/c++/vtknew/IO" -O"E:/src/kitware/SB/build/IO"
-B"E:/src/kitware/SB/build"

and msdev put that "custom build" step in a .bat file, which is run. But it
fails, because cmake.exe can not be called like that.

In Windows 98, you can do that :
     E:\SRC\KITWARE\CMAKE\SOURCE\cmake.exe
     "E:\SRC\KITWARE\CMAKE\SOURCE\cmake.exe"

but you can't do that, it fails (at least at home) :
     "E:/SRC/KITWARE/CMAKE/SOURCE/cmake.exe"
     E:/SRC/KITWARE/CMAKE/SOURCE/cmake.exe

I guess we need to escapes spaces, but disabling the conversion to Unix
slashes for this specific var would actually solve the problem. But I guess
this has been done for good reason ?
Another problem is that this conversion to Unix slashes is done twice : the
call to FindProgram use CollapseFullPath which itself use
ConvertToUnixSlashes (why ?). Hence, we are in trouble.

For this specific case, what can we do ? Add a ConvertToWindowsSlashes and
surround it with a #ifdef _WIN32 to convert the path back to Windows syntax
?

What do you think ?


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