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<p class="MsoNormal">I can't speak to the rest, but -framework *is* supported by the Darwin linker (ld64), so I would expect that option to be passed through to the linker at least on Darwin.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">cfe-dev <cfe-dev-bounces@lists.llvm.org> on behalf of cfe-dev <cfe-dev@lists.llvm.org><br>
<b>Reply-To: </b>David Greene <dag@cray.com><br>
<b>Date: </b>Tuesday, March 5, 2019 at 7:29 AM<br>
<b>To: </b>cfe-dev <cfe-dev@lists.llvm.org><br>
<b>Subject: </b>[cfe-dev] Understanding Options.td<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">I am looking at adding an option that should only be passed by the user<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">at link time. The option affects how clang behaves and does not get<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">passed to the linker itself. Clang should warn if the option is given<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">in a non-linking context.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Looking at Driver/Options.td, I see a couple of definitions that might<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">be relevant:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">// LinkerInput - The option is a linker input.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">def LinkerInput : OptionFlag;<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">def Link_Group : OptionGroup<"<T/e/s/t/u group>">, DocName<"Linker flags">,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"> DocBrief<[{Flags that are passed on to the linker}]>;<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">I also see some uses of these:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">def hip_device_lib_path_EQ : Joined<["--"], "hip-device-lib-path=">, Group<Link_Group>,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"> HelpText<"HIP device library path">;<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">def hip_device_lib_EQ : Joined<["--"], "hip-device-lib=">, Group<Link_Group>,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"> HelpText<"HIP device library">;<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">def framework : Separate<["-"], "framework">, Flags<[LinkerInput]>;<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">I am not sure how to interpret this. On the one hand, I imagine the HIP<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">options are options that affect how clang behaves but do not get passed<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">to the linker, so Link_Group seems like the right things to use. On the<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">other hand, I don't think linkers support a -framework option so maybe<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">LinkerInput is what I should use. I don't know what "linker input"<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">means, nor what "passed on to the linker" means given what I am seeing<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">in Options.td.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Is there some guidance on the use of Flags and Group for options? What<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">is the right incantation for my needs?<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Thanks!<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"> -David<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">_______________________________________________<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">cfe-dev mailing list<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><a href="mailto:cfe-dev@lists.llvm.org">cfe-dev@lists.llvm.org</a><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.llvm.org_cgi-2Dbin_mailman_listinfo_cfe-2Ddev&d=DwIGaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=o3kDXzdBUE3ljQXKeTWOMw&m=Io4QkBpxp1wDg8XQBEa_B8jelhDU4NFA2N2taFfCSl0&s=cYHtM_PBjOiwFgXfkO7YurK6hddMsJTvfGEIB0jW2jQ&e=">https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.llvm.org_cgi-2Dbin_mailman_listinfo_cfe-2Ddev&d=DwIGaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=o3kDXzdBUE3ljQXKeTWOMw&m=Io4QkBpxp1wDg8XQBEa_B8jelhDU4NFA2N2taFfCSl0&s=cYHtM_PBjOiwFgXfkO7YurK6hddMsJTvfGEIB0jW2jQ&e=</a><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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