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From: Ibrahim Shaame <ishaame@gmail.com>
Date: Fri, 2 Jan 2026 21:23:58 +0300
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 <CAJOWwD4dUe-zRw2kd_jJgy5m1Aa8mGNKKwn-_DywSwUDt5ik4g@mail.gmail.com>
Subject: Unable to compile postgresql-18.1
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Hello there
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 dir=
ectory
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/src'
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

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<div dir=3D"ltr"><div>Hello there</div><div>I have tried to compile from so=
urce postgresql-18.1 but it fails and I get the following error:</div><div>=
<br></div><div>gcc: fatal error: cannot read spec file =E2=80=98./specs=E2=
=80=99: Is a directory<br>compilation terminated.<br>make[2]: *** [&lt;buil=
tin&gt;: isolationtester.o] Error 1<br>make[2]: Leaving directory &#39;/dat=
a/dwnlds/dwnld_slack/postgresql-18.1/src/test/isolation&#39;<br>make[1]: **=
* [Makefile:42: all-test/isolation-recurse] Error 2<br>make[1]: Leaving dir=
ectory &#39;/data/dwnlds/dwnld_slack/postgresql-18.1/src&#39;<br>make: *** =
[GNUmakefile:11: all-src-recurse] Error 2</div><div><br></div><div>Last com=
pilation of postgresql-18.0 worked perfectly without issue and on the same =
laptop</div><div>Any suggestions?</div><div><br></div><div>I am on : Slackw=
are64 Linux 15.0 (Current)</div><div>Acer E5-771 laptop<br></div></div>

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