Philip Yarra <philip@utiba.com> writes:
> I just did a test build on a machine with bison 1.35, and there were no
> complaints regarding its version
You sure? I see in configure's output
...
checking whether it is possible to strip libraries... yes
checking for bison... bison -y
configure: WARNING:
*** The installed version of Bison is too old. PostgreSQL needs
*** Bison version 1.875 or later.
checking for perl... /usr/bin/perl
checking for main in -lbsd... yes
...
which admittedly is easy to miss, but it's there. (The reason it's not
a hard error is that you don't actually need bison unless you don't have
up-to-date copies of the derived files made by bison. This should not
be the case when using a snapshot, only when building from a CVS pull.)
> I assume that a way was found to make
> older versions of bison work
You assume wrong. Not all the .y files need recent bison, but the ones
that do will fail badly. The issues are grammar-size limits for bison
less than about 1.50, and outright bison bugs for versions from there to
1.875. We do not have workarounds.
regards, tom lane