Rick Houkes wrote:
For me the result is for awk --version | head -n1 is: GNU Awk 4.1.1, API:
1.1 (GNU MPFR 3.1.2-p11, GNU MP 6.0.0)
So it looks like I did replace mawk with gawk on the Kubuntu host. However
I did notice mawk is still present on the system,
So I did some more digging I came to conclusion it was mawk after all. It
seems that ncurses prefers to use mawk even when awk points to gawk and
even when there is an awk or gawk earlier in $PATH. The only way to get
ncurses to build without the patch was to ensure there is no mawk in $PATH
what so ever.
However on my fresh LFS build, I did try an ncurses build with mawk in
$PATH. That was no problem was so ever without the patch. Heck it even
compiled with only mawk present an no gawk.
That leaves me puzzling why ncurses is giving issues on a Kubuntu host when
mawk is present next to gawk. Might be there is some 'feature' in the mawk
Kubuntu. On my fresh LFS dev build with gawk next to mawk or pure mawk
seems to make ncurses build regardless. I even retried this with the temp
toolchain within the chroot. The mawk used is the latest from the mawk
website.
After all this I came to the conlusion that is is a host system problem. It
seems to be having mawk present in $PATH on a *ubuntu 15.04 host is giving
issues. If mawk is not present in $PATH on *ubuntu 15.04 ncurses will
compile happily.
Thanks for the research. I note in configure there is:
for ac_prog in mawk gawk nawk awk
do
...
break
done
So we can fix this in several different ways:
1. Remove mawk from the host
2. Use the sed on the source
sed -i 's/.:space:./ \t/g' ncurses/base/MKlib_gen.sh
3. Add AWK=gawk ./configure ...
4. sed s/mawk// configure
I do not know where the mawk comes from in configure. It is not in
configure.in. Perhaps the line:
CF_PROG_AWK
When I run autoconf on ncurses, the order of the search for awk is
changed to
for ac_prog in gawk mawk nawk awk
so upstream is using an old, or at least different, version of autoconf.
I'm inclined to go with option 4 above, but would like other opinions.
-- Bruce
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