Any idea what could cause this error.

Sorry - I was assuming that your build (batch) script was passing command line arguments to make.
In that case, the same command line args that worked for dmake (and makefile.mk) would also work for gmake (and GNUmakefile).
But if you're using the batch file to edit the GNUmakefile then you'll need to rewrite your patches.

I recommend that you stop altering the GNUmakefile, and instead start providing your build options via the arguments you provide to gmake.
For example, if you want perl to be installed in C:\my_new_perl and mingw is installed in C:\my_mingw, then instead of altering the INST_TOP and CCHOME settings in GNUmakefile, just run: 
gmake INST_TOP=C:\my_new_perl CCHOME=C:\my_mingw
gmake test INST_TOP=C:\my_new_perl CCHOME=C:\my_mingw
gmake install INST_TOP=C:\my_new_perl CCHOME=C:\my_mingw

[download]
Of course, there maybe other build options that you'll want to add to that argument list.

Do I need nmake here.

No - the GNUmakefile is written specifically for GNU make.
The Makefile is written specifically for nmake, but it supports only Microsoft compilers.

Cheers,
Rob

In reply to Re^2: makefile.mk is missing with Perl 5.34.0 distro. by syphilis
in thread makefile.mk is missing with Perl 5.34.0 distro. by Anonymous Monk

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