GNU bug report logs - #63572
htmlcxx-0.87 fails to build

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Efraim Flashner <efraim <at> flashner.co.il>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#63572: closed (htmlcxx-0.87 fails to build)
Date: Wed, 24 May 2023 08:44:05 +0000

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Your message dated Wed, 24 May 2023 11:43:33 +0300
with message-id <ZG3ONXCPRfMqHCt4 <at> 3900XT>
and subject line Re: bug#63572: [PATCH] Re: bug#63572: htmlcxx-0.87 fails to build
has caused the debbugs.gnu.org bug report #63572,
regarding htmlcxx-0.87 fails to build
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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63572: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=63572
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Contact help-debbugs <at> gnu.org with problems

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From: Arne Babenhauserheide <Arne_Bab <at> web.de>
To: bug-guix <at> gnu.org
Subject: htmlcxx-0.87 fails to build
Date: Thu, 18 May 2023 17:17:48 +0200

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Hi,

To reproduce: guix build htmlcxx — it blocks several dependents.

The relevant part of the error:

In file included from CharsetConverter.cc:5:
CharsetConverter.h:20:90: error: ISO C++17 does not allow dynamic exception specifications
   20 |                         CharsetConverter(const std::string &from, const std::string &to) throw (Exception);

These were deprecated in C++11 and removed in C++17: https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0003r5.html

So this may just need compiler parameters to set C++11 instead of C++17
as target.

A first step towards the fix might be

diff --git a/gnu/packages/web.scm b/gnu/packages/web.scm
index 6e79fe99b8..9c1319f3af 100644
--- a/gnu/packages/web.scm
+++ b/gnu/packages/web.scm
@@ -8130,6 +8130,9 @@ (define-public htmlcxx
        (sha256
         (base32 "1j3mzjlczjrk4ahc43s6kzpvzypzjmqz4sillnca5yadrwwgjf2x"))))
     (build-system gnu-build-system)
+    (arguments
+     ;; ISO C++17 does not allow dynamic exception specifications
+     `(#:configure-flags '("CXXFLAGS=-std=c++11")))
     (home-page "https://htmlcxx.sourceforge.net/")
     (synopsis "Simple non-validating CSS1 and HTML parser for C++")
     (description "htmlcxx is a simple non-validating CSS1 and HTML parser for


The complete log is attached.

Best wishes,
Arne

-- 
unpolitisch sein
heißt politisch sein, 
ohne es zu merken. 
- ArneBab

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From: Efraim Flashner <efraim <at> flashner.co.il>
To: "Dr. Arne Babenhauserheide" <arne_bab <at> web.de>
Cc: 63572-done <at> debbugs.gnu.org, Bruno Victal <mirai <at> makinata.eu>
Subject: Re: bug#63572: [PATCH] Re: bug#63572: htmlcxx-0.87 fails to build
Date: Wed, 24 May 2023 11:43:33 +0300

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On Sat, May 20, 2023 at 11:43:46PM +0200, Dr. Arne Babenhauserheide wrote:
> Hi Bruno,
> 
> Bruno Victal <mirai <at> makinata.eu> writes:
> >> So this may just need compiler parameters to set C++11 instead of C++17
> >> as target.
> >
> > Looking at the README file from <https://sourceforge.net/p/htmlcxx/code/ci/master/tree/>,
> > it looks to me that upstream has moved to <https://github.com/bonitao/htmlcxx>. (judging by the name of the repo owner)
> > Can you try asking upstream for a new release? The last commit (<https://github.com/bonitao/htmlcxx/commit/0ffa3e90b7dc3944f199fd80ab47c2a82589209a>)
> > has the message 'Fix c+11 compilation'.
> 
> I tried to build from the latest commit, but it did not build.
> 
> But I could now test adding the std argument and that works.

Thanks for checking.

> $ ./pre-inst-env guix build htmlcxx
> /gnu/store/3bqrqs2zzx1gy4xc1g9i59z8nnhwv2rs-htmlcxx-0.87
> 
> A patch is attached.

I didn't see any dependant packages. Patch pushed! Thanks.


-- 
Efraim Flashner   <efraim <at> flashner.co.il>   רנשלפ םירפא
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