Re: Problem while installing PostgreSQL using make

On 2024-07-04 Th 6:22 AM, Mohab Yaser wrote:
> can you send me a link to download this version on windows as I didn't
> find anything other than the one I already have downloaded
>
> On Thu, Jul 4, 2024 at 1:21 PM Aleksander Alekseev
> <aleksander(at)timescale(dot)com> wrote:
>
> Hi,
>
> > While I was trying to install PostgreSQL from the git repository
> to start contributing I faced this issue. When I try to type
> ./configure it gives me this error
> >
> > checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
> > checking for bison... /c/GnuWin32/bin/bison
> > configure: using bison (GNU Bison) 2.4.1
> > checking for flex... configure: error:
> > *** The installed version of Flex, /c/GnuWin32/bin/flex, is too
> old to use with PostgreSQL.
> > *** Flex version 2.5.35 or later is required, but this is
> C:\GnuWin32\bin\flex.exe version 2.5.4.
> >
> > Look at the last two lines, the error says that the installed
> version of flex is too old and is 2.4 which is correct and not too
> old and should be valid but actually I can't proceed beyond this
> point. And I double checked the version of flex
> >
> > $ flex --version
> > C:\GnuWin32\bin\flex.exe version 2.5.4
> >
> > and made sure that it is properly included in PATH
> >
> > $ which flex
> > /c/GnuWin32/bin/flex
>
> Flex 2.5.4 is ancient. Version 2.5.39 was released in 2020 and I
> didn't look further to figure out the exact release year of 2.5.4
>
> You need something like flex 2.6.4 and bison >= 2.3. That's what I
> use.
>

I assume this configure script is running under Msys2? Just install its
flex and bison (and remove these ancient versions):

   pacman -S bison flex

cheers

andrew

--
Andrew Dunstan
EDB:https://www.enterprisedb.com