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<a href="https://gitlab.com/pauleggert">Paul Eggert</a> created an issue: <a href="https://gitlab.com/gnutls/gnutls/-/issues/1703">#1703</a>
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<h2 dir="auto" style="margin-top: 0; margin-bottom: 10px;" align="initial">
<a href="#description-of-problem" aria-hidden="true" class="anchor" id="user-content-description-of-problem" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>Description of problem:</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">GNU Emacs cannot be linked to GnuTLS statically, because GnuTLS mistakenly exports the private symbols <code style='font-size: 90%; color: #18171d; word-wrap: break-word; border-radius: .25rem; background-color: #ececef; margin-top: 0; font-weight: inherit; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; white-space: pre-wrap; overflow-wrap: break-word; word-break: keep-all; padding: 0.125rem 0.25rem;'>hash_string</code> and <code style='font-size: 90%; color: #18171d; word-wrap: break-word; border-radius: .25rem; background-color: #ececef; font-weight: inherit; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; white-space: pre-wrap; overflow-wrap: break-word; word-break: keep-all; padding: 0.125rem 0.25rem;'>hash_lookup</code>, and Emacs wants to use these symbols for its own purposes.</p>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">This bug was reported to Emacs as <a href="https://bugs.gnu.org/77476" rel="nofollow noreferrer noopener" target="_blank" style="margin-top: 0;">Bug#77476 [PATCH] Rename various hash functions to avoid clashing with GnuTLS</a> and I installed a <a href="https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=c8eed90eb4d0583dc3463edfad176b9d3f98d11f" rel="nofollow noreferrer noopener" target="_blank">workaround by renaming Emacs functions</a>, but the original problem really should be fixed in GnuTLS.</p>
<h2 dir="auto" style="margin-top: 20px; margin-bottom: 10px;" align="initial">
<a href="#version-of-gnutls-used" aria-hidden="true" class="anchor" id="user-content-version-of-gnutls-used" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>Version of gnutls used:</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">3.8.9</p>
<h2 dir="auto" style="margin-top: 20px; margin-bottom: 10px;" align="initial">
<a href="#distributor-of-gnutls-eg-ubuntu-fedora-rhel" aria-hidden="true" class="anchor" id="user-content-distributor-of-gnutls-eg-ubuntu-fedora-rhel" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>Distributor of gnutls (e.g., Ubuntu, Fedora, RHEL)</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">Fedora 42</p>
<h2 dir="auto" style="margin-top: 20px; margin-bottom: 10px;" align="initial">
<a href="#how-reproducible" aria-hidden="true" class="anchor" id="user-content-how-reproducible" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>How reproducible:</h2>
<div class="gl-relative markdown-code-block js-markdown-code">
<pre class="code highlight js-syntax-highlight language-plaintext" v-pre="true" style='display: block; font-size: 14px; color: #3a383f; line-height: 1.6em; overflow-x: auto; border-radius: .25rem; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; margin: 0 0 1rem; padding: 12px; border: 1px solid #dcdcde;'><code style='font-size: inherit; color: inherit; word-wrap: normal; word-break: keep-all; border-radius: .25rem; background-color: inherit; white-space: pre; margin-top: 0; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; overflow-wrap: normal; padding: unset;'><span id="LC1" class="line" lang="plaintext" style="margin-top: 0;">wget https://www.gnupg.org/ftp/gcrypt/gnutls/v3.8/gnutls-3.8.9.tar.xz</span>
<span id="LC2" class="line" lang="plaintext">xz -d <gnutls-3.8.9.tar.xz | tar xf -</span>
<span id="LC3" class="line" lang="plaintext">(cd gnutls-3.8.9</span>
<span id="LC4" class="line" lang="plaintext"> ./configure --prefix=/tmp/prefix 'CC=gcc -std=gnu17'</span>
<span id="LC5" class="line" lang="plaintext"> make install)</span>
<span id="LC6" class="line" lang="plaintext">wget https://ftp.gnu.org/pub/gnu/emacs/emacs-30.1.tar.xz</span>
<span id="LC7" class="line" lang="plaintext">xz -d <emacs-30.1.tar.xz | tar xf -</span>
<span id="LC8" class="line" lang="plaintext">cd emacs-30.1</span>
<span id="LC9" class="line" lang="plaintext">./configure LIBGNUTLS_LIBS=/tmp/prefix/lib/libgnutls.a</span>
<span id="LC10" class="line" lang="plaintext">make</span></code></pre>
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<h2 dir="auto" style="margin-top: 20px; margin-bottom: 10px;" align="initial">
<a href="#actual-results" aria-hidden="true" class="anchor" id="user-content-actual-results" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>Actual results:</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">The build fails as follows:</p>
<div class="gl-relative markdown-code-block js-markdown-code">
<pre class="code highlight js-syntax-highlight language-plaintext" v-pre="true" style='display: block; font-size: 14px; color: #3a383f; line-height: 1.6em; overflow-x: auto; border-radius: .25rem; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; margin: 0 0 1rem; padding: 12px; border: 1px solid #dcdcde;'><code style='font-size: inherit; color: inherit; word-wrap: normal; word-break: keep-all; border-radius: .25rem; background-color: inherit; white-space: pre; margin-top: 0; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; overflow-wrap: normal; padding: unset;'><span id="LC1" class="line" lang="plaintext" style="margin-top: 0;">...</span>
<span id="LC2" class="line" lang="plaintext"> CCLD temacs </span>
<span id="LC3" class="line" lang="plaintext">/usr/bin/ld: /tmp/prefix/lib/libgnutls.a(libgnu_la-hash.o): in function `hash_lookup':</span>
<span id="LC4" class="line" lang="plaintext">/home/eggert/src/gnu/gnutls/gl/hash.c:243: multiple definition of `hash_lookup'; fns.o:/home/eggert/junk/emacs-30.1/src/fns.c:5109: first defined here</span>
<span id="LC5" class="line" lang="plaintext">/usr/bin/ld: /tmp/prefix/lib/libgnutls.a(libgnu_la-hash.o): in function `hash_string':</span>
<span id="LC6" class="line" lang="plaintext">/home/eggert/src/gnu/gnutls/gl/hash.c:386: multiple definition of `hash_string'; fns.o:/home/eggert/junk/emacs-30.1/src/fns.c:5348: first defined here</span>
<span id="LC7" class="line" lang="plaintext">...</span></code></pre>
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<h2 dir="auto" style="margin-top: 20px; margin-bottom: 10px;" align="initial">
<a href="#expected-results" aria-hidden="true" class="anchor" id="user-content-expected-results" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>Expected results:</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">The build should work.</p>
<p dir="auto" style="color: #3a383f; margin: 0;" align="initial">I suggest that GnuTLS should use <a href="https://www.gnu.org/software/gnulib/manual/html_node/Exported-Symbols-of-Shared-Libraries.html" rel="nofollow noreferrer noopener" target="_blank" style="margin-top: 0;">Gnulib's <code style='font-size: 90%; color: inherit; word-wrap: break-word; border-radius: .25rem; background-color: #ececef; margin-top: 0; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; white-space: pre-wrap; overflow-wrap: break-word; word-break: keep-all; padding: 0.125rem 0.25rem;'>lib-symbol-visibility</code> module</a> to fix the problem.</p>
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