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From: Ibrahim Shaame <ishaame@gmail.com>
Date: Wed, 21 Jan 2026 09:49:07 +0300
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 <CAJOWwD4d0SWVQiGa61o85AQ9o1F4PtGEBK7c=bHVNQYOCKGjtQ@mail.gmail.com>
Subject: Re: Unable to compile postgresql-18.1
To: Erik Wienhold <ewie@ewie.name>
Cc: pgsql-admin <pgsql-admin@lists.postgresql.org>
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Hello Erik,
Thank you for the response. As for LIBRARY_PATH, I have always manually
compiled postgresql and I don't explicitly mention the LIBRARY_PATH
directory. That's why I am surprised why this time with this subversion
doesn't work just as it worked in the last version.

Thanks
Ibrahim

On Sun, Jan 18, 2026 at 7:29=E2=80=AFPM Erik Wienhold <ewie@ewie.name> wrot=
e:

> On 2026-01-02 19:23 +0100, Ibrahim Shaame wrote:
> > I have tried to compile from source postgresql-18.1 but it fails and I
> get
> > the following error:
> >
> > gcc: fatal error: cannot read spec file =E2=80=98./specs=E2=80=99: Is a=
 directory
> > compilation terminated.
> > make[2]: *** [<builtin>: isolationtester.o] Error 1
> > make[2]: Leaving directory
> > '/data/dwnlds/dwnld_slack/postgresql-18.1/src/test/isolation'
> > make[1]: *** [Makefile:42: all-test/isolation-recurse] Error 2
> > make[1]: Leaving directory '/data/dwnlds/dwnld_slack/postgresql-18.1/sr=
c'
> > make: *** [GNUmakefile:11: all-src-recurse] Error 2
> >
> > Last compilation of postgresql-18.0 worked perfectly without issue and =
on
> > the same laptop
> > Any suggestions?
> >
> > I am on : Slackware64 Linux 15.0 (Current)
> > Acer E5-771 laptop
>
> What are exact build commands you've executed?
>
> Could be that LIBRARY_PATH contains an empty path.  For example, I can
> reproduce it with:
>
>         export LIBRARY_PATH=3D
>         make clean world-bin
>
> --
> Erik Wienhold
>

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<div dir=3D"ltr"><div>Hello Erik,</div><div>Thank you for the response. As =
for LIBRARY_PATH, I have always manually compiled postgresql and I don&#39;=
t explicitly mention the LIBRARY_PATH directory. That&#39;s why I am surpri=
sed why this time with this subversion doesn&#39;t work just as it worked i=
n the last version.</div><div><br></div><div>Thanks</div><div>Ibrahim<br></=
div></div><br><div class=3D"gmail_quote gmail_quote_container"><div dir=3D"=
ltr" class=3D"gmail_attr">On Sun, Jan 18, 2026 at 7:29=E2=80=AFPM Erik Wien=
hold &lt;<a href=3D"mailto:ewie@ewie.name">ewie@ewie.name</a>&gt; wrote:<br=
></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;=
border-left:1px solid rgb(204,204,204);padding-left:1ex">On 2026-01-02 19:2=
3 +0100, Ibrahim Shaame wrote:<br>
&gt; I have tried to compile from source postgresql-18.1 but it fails and I=
 get<br>
&gt; the following error:<br>
&gt; <br>
&gt; gcc: fatal error: cannot read spec file =E2=80=98./specs=E2=80=99: Is =
a directory<br>
&gt; compilation terminated.<br>
&gt; make[2]: *** [&lt;builtin&gt;: isolationtester.o] Error 1<br>
&gt; make[2]: Leaving directory<br>
&gt; &#39;/data/dwnlds/dwnld_slack/postgresql-18.1/src/test/isolation&#39;<=
br>
&gt; make[1]: *** [Makefile:42: all-test/isolation-recurse] Error 2<br>
&gt; make[1]: Leaving directory &#39;/data/dwnlds/dwnld_slack/postgresql-18=
.1/src&#39;<br>
&gt; make: *** [GNUmakefile:11: all-src-recurse] Error 2<br>
&gt; <br>
&gt; Last compilation of postgresql-18.0 worked perfectly without issue and=
 on<br>
&gt; the same laptop<br>
&gt; Any suggestions?<br>
&gt; <br>
&gt; I am on : Slackware64 Linux 15.0 (Current)<br>
&gt; Acer E5-771 laptop<br>
<br>
What are exact build commands you&#39;ve executed?<br>
<br>
Could be that LIBRARY_PATH contains an empty path.=C2=A0 For example, I can=
<br>
reproduce it with:<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 export LIBRARY_PATH=3D<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 make clean world-bin<br>
<br>
-- <br>
Erik Wienhold<br>
</blockquote></div>

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