Hi 

$ ack MY_FORMAT *
Goner2.c
170:        printf(MY_FORMAT, sqrt(2.0));

Goner2.xs
14:        printf(MY_FORMAT, sqrt(2.0));

Makefile
18:#     DEFINE => q["-DMY_FORMAT=\"%.16e\""]
165:DEFINE = "-DMY_FORMAT=\"%.16e\""
315:    PASTHRU_DEFINE="\"-DMY_FORMAT=\\\"%.16e\\\"\" $(PASTHRU_DEFINE
+)"\

Makefile.PL
26:    DEFINE => q{"-DMY_FORMAT=\"%.16e\""},

$ perl -Mblib -MGoner2 -e" Goner2::beGone() "
1.4142135623730951e+000

[download]

ExtUtils::MM_Any 

$ perl -MExtUtils::MakeMaker -
print MM->new->quote_literal('-DMY_FORMAT="%.16e"')
__END__
Warning: Guessing NAME [Goner2] from current directory name.
-DMY_FORMAT=\"%.16e\"

[download]

rt://ExtUtils-MakeMaker?

😳

In reply to Re: Defining an XS symbol in the Makefile.PL (quoting) by Anonymous Monk
in thread Defining an XS symbol in the Makefile.PL by syphilis

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