How can I correct the proble when compile tex

[Zhang Xiangsun]

When I use cygwin32_b19 and egcs1.1 to compile tex: web2c from
CTAN/web2c/
configure is successful, so as compile the binaries program such as
tex.exe,
gftopk.exe, etc. but when it compile the latex.fmt, errors occured.
it said: in latex.ltx, 
\ifx\@currdir\@undefined
  \IfFileExists{./texsys.aux}{\gdef\@currdir{./}}%
    {\IfFileExists{[]texsys.aux}{\gdef\@currdir{[]}}%
 !\inaccessible
how to correct this problem?
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