GNU APL now requires bash shell and in-tree builds

[Callahan, Brian Robert]

Hello --

In fixing Alexander's issue, I found these lines in the GNU APL Makefile I have never seen before:

buildtag.hh: Makefile buildtag.sh

        source ${top_srcdir}/buildtag.sh

        touch $@

The source command is a bash built-in and won't work on other shells, like OpenBSD ksh.

Additionally, even with bash, this command does not work if doing an out-of-tree build, which is the way I have always built GNU APL and which autotools are supposed to make easy to do.

Thanks.

~Brian

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Brian Robert Callahan, Ph.D.

Lecturer, ITWS@RPI

Office: Lally 304