dllwrap.exe error when compiling pgsql

Hi Guys,
I got an error related with dllwrap.exe when compiling postgresql source. I am using MYS1.0.10(MINGW32) and gcc40-20051104 compiler.
Anybody know how to solve this please let me know. I have attached the error messages below.

dllwrap -o libascii_and_mic.dll --dllname libascii_and_mic.dll --def ascii_and_mic.def ascii_and_mic.o -L../../../../../../src/backend -L../../../../../../src/port -lpostgres
d:\PostgreSQL\Tools\GCC\gcc40-20051104\thisiscool-gcc\gcc-4.0\i686-pc-mingw32\bin\dllwrap.exe: _spawnvp: Invalid argument
make[3]: *** [libascii_and_mic.dll] Error 1
make[3]: Leaving directory `/d/PostgreSQL/Source Snapshot/postgresql-snapshot/postgresql-snapshot/src/backend/utils/mb/conversion_procs/ascii_and_mic'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/d/PostgreSQL/Source Snapshot/postgresql-snapshot/postgresql-snapshot/src/backend/utils/mb/conversion_procs'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/d/PostgreSQL/Source Snapshot/postgresql-snapshot/postgresql-snapshot/src'
make: *** [all] Error 2

Thanks in advance.
Regards,
ganes