[CMake] cmake for cygwin at 64bit

[marco atzeri]

Dear Bill,

we are starting to port packages on cygwin at 64 bit
http://cygwin.com/ml/cygwin-apps/2013-03/msg00070.html

Of course a cmake version for that platform will be helpful;
I tried to build the current source and the first obstacle is that
the deprecated "cygwin_conv_to_win32_path" function is not
available anymore.

I tried to replace it with "cygwin_conv_path" but it seems I am missing 
something as on both 64 and 32 bit versions the outcome is:

CMake Error: CMake executable cannot be found at /cmake.exe
CMake Error: Error executing cmake::LoadCache(). Aborting.


I added two printf, to check my changes;
the conversion seems right

  posix path /pub/devel/cmake/cmake-2.8.9/.build/Bootstrap.cmk/cmake.com
  win32 path 
E:\cygwin\pub\devel\cmake\cmake-2.8.9\.build\Bootstrap.cmk\cmake.com
  posix path /pub/devel/cmake/cmake-2.8.9/.build/Bootstrap.cmk/cmake.exe
  win32 path 
E:\cygwin\pub\devel\cmake\cmake-2.8.9\.build\Bootstrap.cmk\cmake.exe
  posix path /pub/devel/cmake/cmake-2.8.9/.build/Bootstrap.cmk/cmake
  win32 path 
E:\cygwin\pub\devel\cmake\cmake-2.8.9\.build\Bootstrap.cmk\cmake

file is there

$ ls -l /pub/devel/cmake/cmake-2.8.9/.build/Bootstrap.cmk/cmake.exe
-rwxr-xr-x 1 marco Administrators 5733380 Mar 15 09:34 
/pub/devel/cmake/cmake-2.8.9/.build/Bootstrap.cmk/cmake.exe

and it is a working binary, as direct execution gives :
$ /pub/devel/cmake/cmake-2.8.9/.build/Bootstrap.cmk/cmake.exe
Bootstrap CMake should not be used outside CMake build process.


So I am clearly missing something else .
Any idea ?

Marco

-------------- next part --------------
--- orig/cmake-2.8.9/Source/kwsys/SystemTools.cxx	2012-08-15 21:28:03.000000000 +0200
+++ cmake-2.8.9/Source/kwsys/SystemTools.cxx	2013-03-15 09:33:39.928041000 +0100
@@ -85,7 +85,8 @@
 #endif
 
 #ifdef __CYGWIN__
-extern "C" void cygwin_conv_to_win32_path(const char *path, char *win32_path);
+#include <sys/cygwin.h>
+extern "C" ssize_t cygwin_conv_path( cygwin_conv_path_t what, const void * from, void * to, size_t size );	 
 #endif
 
 // getpwnam doesn't exist on Windows and Cray Xt3/Catamount
@@ -1123,7 +1124,20 @@
     }
   else
     {
-    cygwin_conv_to_win32_path(path, win32_path);
+    ssize_t size;
+    size=cygwin_conv_path(CCP_POSIX_TO_WIN_A, path, NULL, 0 );
+    if (size < 0)
+      perror ("cygwin_conv_path");
+    else
+      {
+        win32_path= (char *) malloc (size);
+        if (cygwin_conv_path(CCP_POSIX_TO_WIN_A, path, win32_path, size ))
+             perror ("cygwin_conv_path");
+      }
+
+    printf(" posix path %s\n", path);
+    printf(" win32 path %s\n", win32_path);
+
     SystemToolsTranslationMap::value_type entry(path, win32_path);
     SystemTools::Cyg2Win32Map->insert(entry);
     }