libuv i386 build failure

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

Working on pkgsrc on someonelse(tm)'s system, which has:

netbsd# echo $SHELL
/bin/csh

Building libuv on this -current/i386 system fails with:

===> Configuring for libuv-1.14.1                                               
Unescaped left brace in regex is illegal here in regex; marked by <-- HERE in m/\${ <-- HERE ([^ \t=:+{}]+)}/ at /usr/pkgsrc/devel/libuv/work.i386/.tools/bin/au
tomake line 3936.
test: : bad number
test: : bad number
+ libtoolize --copy
+ aclocal -I m4
+ autoconf
+ automake --add-missing --copy
Unescaped left brace in regex is illegal here in regex; marked by <-- HERE in m/\${ <-- HERE ([^ \t=:+{}]+)}/ at /usr/pkgsrc/devel/libuv/work.i386/.tools/bin/au
tomake line 3936.
*** Error code 255

Stop.
make[1]: stopped in /usr/pkgsrc/devel/libuv
*** Error code 1


No "test" in sight in the automake bit (line 3936 is the regex):

# substitute_ac_subst_variables ($TEXT)
# -------------------------------------
# Replace any occurrence of ${FOO} in $TEXT by @FOO@ if FOO is an AC_SUBST
# variable.
sub substitute_ac_subst_variables
{
  my ($text) = @_;
  $text =~ s/\${([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge;
  return $text;
}

This is perl 5, version 26, subversion 0 (v5.26.0) built for i386-netbsd-thread-multi

Didn't get as far as running configure, which is where I would have
expected loads of "if test"...

Thoughts?

Cheers,

Patrick