PatR acfbf20958 unix/Makefile.top fetch-Lua bit ...

% make spotless
% sh sys/unix/setup.sh sys/unix/hints/macOS.2020
% make fetch-Lua

worked, but the last ended with

|rm include/nhlua.h
|rm: include/nhlua.h: No such file or directory
|make: [fetch-Lua] Error 1 (ignored)

which might frighten skittish users (like me).  Check whether the
constructed header file exists (so is assumed to be for an earlier
Lua version) and only delete it in that case.  No more scary report
of benign failure when it isn't there (after 'make spotless' or for
brand new source setup).

Also, some time ago we came to the conclusion that 'if [ ]' was an
extension for GNU 'bash' and wouldn't work with some older actual
'sh' implementations.  This replaces the one post-3.6 instance of
|if [ ! -d foo ] then bar; fi
in Makefile.top with
|if test -d foo; then true; else bar; fi
Testing was successful but done with bash rather than an old sh. :-}

2021-06-02 17:13:56 -07:00

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