'-print-prog-name' does not work on Vista OS

["Siddharth Sengupta" <Siddharth.Sengupta@kpitcummins.com>]

Hi,

We have built a MinGW H8 toolchain using gcc-4.2-20080402,
binutils-2.18.50 and 
newlib-1.16.0. 

The following command did not give the expected output on Vista OS for 
this toolchain,
Command: h8300-elf-gcc -print-prog-name=cc1
Output: cc1
Expected Result:
$(TCINSTALL)/h8300-elf/bin/../libexec/gcc/h8300-elf/4.2-
		GNUH8_v0802/cc1.exe
where, $(TCINSTALL) is the toolchain installation directory.

The same command when run on WinXP, gave the correct path,
Command: h8300-elf-gcc -print-prog-name=cc1
Output:
$(TCINSTALL)/h8300-elf/bin/../libexec/gcc/h8300-elf/4.2-GNUH8_v0802/
	cc1.exe
Expected Result: Same as Output
where, $(TCINSTALL) is the toolchain installation directory.

Additional Information:

The sources used for building the GNU H8 MinGW toolchain are 
gcc-core-3.4.5-20060117-3.tar.gz,
gcc-g++-3.4.5-20060117-3.tar.gz, binutils-2.17.50-20060824-1.tar.gz, 
mingw-runtime-3.12.tar.gz and w32api-3.9.tar.gz.

We also downloaded "MinGW-5.1.4.exe" from the official MinGW website and
found
that the command works as expected on Vista OS.
This used the following versions: 
gcc-core-3.4.5-20060117-3.tar.gz,
gcc-g++-3.4.5-20060117-3.tar.gz, binutils-2.17.50-20060824-1.tar.gz,
mingw-runtime-3.14.tar.gz and w32api-3.11.tar.gz. 

Command: gcc -print-prog-name=cc1
Output: C:/MinGW/bin/../libexec/gcc/mingw32/3.4.5/cc1.exe
Expected Result: Same as Output 

To confirm whether the difference in MinGW versions resulted in this
behaviour,
we built MinGW GNU H8 toolchain using the above versions. 
However, the '-print-prog-name' command still gave the same problem.
The same command when run on WinXP, worked correctly.

Can somebody please tell where the problem exactly lies?

Regards
Siddharth Sengupta