Problems building recent NUT on Solaris 8

[jimklimov]

Following up from mailing list discussion at https://alioth-lists.debian.net/pipermail/nut-upsuser/2022-December/013051.html

• lacking python (so need to disable augeas to run autogen.sh)
• older perl does not support newer open() syntax we use (fixes in helper scripts needed at least to run autogen.sh)
• default shell interpreter issues, and no easy way to choose another for configure script
• after getting something built, NUT clients seem to not actually connect() to a data server

Original issue was reported with a SPARC build of the OS, but many points were reproduced and are being fixed in an x86 (32-bit) VM prepared per mac-65/Solaris_8_x86_VM#1 notes, using an add-on TGCware set of packages for compiler and some modern tools that are absent in default OS installation.

[jimklimov]

Some notes (TODO: bump docs):

• For CONFIG_SHELL, system dtksh seems to support the syntax (unlike /bin/sh), but segfaults during configure tests. Alternatively /usr/tgcware/bin/bash (4.4ish) can be used.
• To run ci_build.sh the shebang should be locally fixed to call /usr/tgcware/bin/bash, or the PATH should point to it as a first hit - which may need a bit of complex setup, e.g. a symlink into a dedicated directory, if we want to primarily use OS-provided tools otherwise; I stuck a symlink to /usr/lib/ccache which has to be first anyway.
• default grep lacks the -E option which was preferred over egrep since Replace "egrep" by "grep -E" in shell code - modern systems frown upon the former #1660 - however starting the PATH with /usr/xpg4/bin fixes the problem

[jimklimov]

For lack of python - can follow the suggestion (tweaked for older shell syntax):

WITHOUT_NUT_AUGEAS=true; export WITHOUT_NUT_AUGEAS; ./autogen.sh

[jimklimov]

So far one problem remains: nutlogtest fails when libc is dumb about printf("%s", NULL) -- this segfaults on Solaris 8 and likely would kill NUT programs if they carelessly log a NULL string variable/method-return value somewhere; but otherwise with this branch NUT can be built and self-tested (including runs of upsd with a dummy driver and client connections talking to it).

Some tweaks were imminent as detailed above:

### bash-2.03$ echo $PATH
### /usr/bin::/usr/dt/bin:/usr/openwin/bin:/bin:/usr/ucb:/usr/tgcware/bin:/usr/tgcware/gnu:/usr/tgcware/gcc42/bin:/usr/tgcware/i386-pc-solaris2.8/bin
### bash-2.03$ echo $LD_LIBRARY_PATH
### /usr/lib:/usr/tgcware/lib:/usr/tgcware/gcc42/lib:/usr/tgcware/i386-pc-solaris2.8/lib

:; git clean -fffdddxxx ; \
    CONFIG_SHELL=/usr/tgcware/bin/bash \
    WITHOUT_NUT_AUGEAS=true \
    PATH="/usr/xpg4/bin:$PATH" \
    /usr/tgcware/bin/bash ./ci_build.sh

[jimklimov]

Builds are fixed by PR above, as far passing configuration, self-tests including NIT, and a make distcheck.

Bugs due to printf handling of NULL as detailed above are still possible, may become focus of a different effort.