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<a href="https://gitlab.com/dueno">Daiki Ueno</a>
started a new
discussion on <a href="https://gitlab.com/gnutls/gnutls/-/merge_requests/1294#note_369325885">configure.ac</a>:
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<pre style="margin: 0;"> <span id="LC212" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC213" class="line" lang="plaintext">fi</span>
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<pre style="margin: 0;"> <span id="LC214" class="line" lang="plaintext"></span>
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<td class="diff-line-num new old_line" data-linenumber="215" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="diff-line-num new new_line" data-linenumber="215" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC215" class="line" lang="plaintext">AC_MSG_CHECKING([whether the compiler supports __builtin_available()])</span>
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<td class="diff-line-num new new_line" data-linenumber="216" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC216" class="line" lang="plaintext">AC_COMPILE_IFELSE([</span>
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<td class="diff-line-num new new_line" data-linenumber="217" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC217" class="line" lang="plaintext"> AC_LANG_PROGRAM([[</span>
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<td class="diff-line-num new new_line" data-linenumber="218" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC218" class="line" lang="plaintext">#include <stdlib.h></span>
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<pre style="margin: 0;">+<span id="LC219" class="line" lang="plaintext"> ]],[[</span>
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<pre style="margin: 0;">+<span id="LC220" class="line" lang="plaintext"> if (__builtin_available(macOS 10.8, iOS 5.0, *)) {}</span>
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<p dir="auto">Can't this be done sorely in the C file, with <code>#if has_builtin(__builtin_available)</code>?</p>
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