<table><tr><td style="">rjvbb added a comment.
</td><a style="text-decoration: none; padding: 4px 8px; margin: 0 8px 8px; float: right; color: #464C5C; font-weight: bold; border-radius: 3px; background-color: #F7F7F9; background-image: linear-gradient(to bottom,#fff,#f1f0f1); display: inline-block; border: 1px solid rgba(71,87,120,.2);" href="https://phabricator.kde.org/D16894">View Revision</a></tr></table><br /><div><div><blockquote style="border-left: 3px solid #8C98B8;
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<div style="font-style: normal;
padding-bottom: 4px;">In <a href="https://phabricator.kde.org/D16894#400949" style="background-color: #e7e7e7;
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color: rgb(107, 116, 140);"><p>This makes sense to me. Just the name "SUPPORTED_IF" is strange, when reading that, one thinks "well, if we know the compiler flag is supported, why are we testing that it is?".</p></div>
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<p>I agree it looks strange, but apparently the combination with the macro name isn't as unambiguous as I hoped.</p>
<p>The idea is: add the given option(s) but only If they are Supported by the compiler ... and they are Supported If the given expression is true.</p>
<blockquote style="border-left: 3px solid #a7b5bf; color: #464c5c; font-style: italic; margin: 4px 0 12px 0; padding: 4px 12px; background-color: #f8f9fc;"><p>I think this should be something like TRY_IF.</p></blockquote>
<p>That reads nicer, but isn't exact either because a priori there will be no more trying if the expression is true...</p>
<p>I'll change the macro name to <tt style="background: #ebebeb; font-size: 13px;">ECM_ADD_<LANG>_FLAGS_CONDITIONALLY</tt> and the parameter name to <tt style="background: #ebebeb; font-size: 13px;">CONDITION</tt>, let's see how that works out.</p>
<blockquote style="border-left: 3px solid #a7b5bf; color: #464c5c; font-style: italic; margin: 4px 0 12px 0; padding: 4px 12px; background-color: #f8f9fc;"><p>Then it's clearer that no harm will occur if we set a too low compiler version after TRY_IF, it's just an optimization to avoid e.g. testing all gcc flags on MSVC and vice-versa.</p></blockquote>
<p>Uhm? That was not the intention. Currently if a TRY_IF condition is present then it is the only criterium used, UNLESS the compiler is Clang/AppleClang on APPLE. In that latter case the compiler is queried; this is also the case when no conditional expression is specified.</p>
<p>I can of course inverse that logic, and make the condition a filter for when to query the compiler. At first sight I'd say that the conditional expressions won't need adapting but I have a feeling it might not be as simple.</p></div></div><br /><div><strong>REPOSITORY</strong><div><div>R240 Extra CMake Modules</div></div></div><br /><div><strong>REVISION DETAIL</strong><div><a href="https://phabricator.kde.org/D16894">https://phabricator.kde.org/D16894</a></div></div><br /><div><strong>To: </strong>rjvbb, Build System, kfunk<br /><strong>Cc: </strong>dfaure, kfunk, apol, kde-frameworks-devel, kde-buildsystem, Build System, michaelh, ngraham, bruns<br /></div>