NetBSD 8.0 VAX: Building Bash shell from pkgsrc

Building the bash shell on NetBSD 8.0 VAX port needs some little tweaks and workarounds.

The gcc 5.5.0 compiler included with NetBSD/VAX 8.0 crashes with the default make command when invoked in the pkgsrc/shells/bash source directory, saying:

gcc -DHAVE_CONFIG_H -I. -I. -DHOST=\"vax--netbsdelf\" -DVERSION=\"20180917\"  -O2 -D_FORTIFY_SOURCE=2 -c blake2b.c -o blake2b.o
blake2b.c: In function 'blake2b_compress':
blake2b.c:171:1: internal compiler error: in cselib_invalidate_regno, at cselib.c:2169
 }
 ^
no stack trace because unwind library not available
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://www.NetBSD.org/support/send-pr.html> for instructions.
*** Error code 1

Based on a response to my problem report to NetBSD, there is a quick work-around: turn the compiler's optimizer completely off by adding the following line to /etc/mk.conf:

CFLAGS+=-O0

Subsequently, "make clean" and "make install" go through fine, producing a perfectly usable bash shell.

But, "make install" does not install any useful default common bash profile in /etc/profile. A great set of bash startup files by James Robertson and modified by Dagmar d'Surreal is available at Beyond Linux From Scratch. Just their /etc/profile file by itself is sufficient for most purposes; no need to get the other bash completion, color scheme etc. related files to get by.

I was able to build and install bash successfully, and am using it as the default shell for my user-account on NetBSD/VAX.

Logging in as root produces an ignorable error from the default "sh" shell trying to process  /etc/profile, not a big deal.