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: Arne Babenhauserheide <Arne_Bab <at> web.de>
Subject: bug#63572: closed (Re: bug#63572: [PATCH] Re: bug#63572:
 htmlcxx-0.87 fails to build)
Date: Wed, 24 May 2023 08:44:05 +0000

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Your bug report

#63572: htmlcxx-0.87 fails to build

which was filed against the guix package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 63572 <at> debbugs.gnu.org.

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

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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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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

[a9zh5fn26ds9jzq80c9x9rrxzfkmi9-htmlcxx-0.87.log (text/x-log, attachment)]

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