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<p class="MsoNormal">Hi All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am migrating a build system of an existing project from ‘Object files’ based executable generation to ‘LLVM Bitcode’ files based exe generation and applying OPT pass to LLVM Bitcode. I found out the following 4 step procedure. Please
let me know if this is the right procedure or is there any other easy way of doing it. I need to modify ‘Makefile’ accordingly. I read on some forums about GoldPlugin but I don’t know exactly if it would be useful here:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>Original Makefile- Object Files based Build/Link Steps: <o:p>
</o:p></b></p>
<p class="MsoNormal">clang -g -O2 –o .libs/mergedexe file1.o file2.o file3.o -pthread -Wl,--export-dynamic .libs/lib1.a -lssl –ldl –pthread .libs/lib2.so
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>Proposed Makefile- LLVM Bitcode based Build/Link Steps:<o:p></o:p></b></p>
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>llvm-link -o .libs/mergedbc.bc file1.bc file2.bc file3.bc<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>opt –o optmerged.bc -load /path/to/Mypass.so -mypass < mergedbc.bc<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>llc -o .libs/mergedbc.s .libs/mergedbc.bc<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="mso-list:Ignore">4.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>gcc -g -O2 -o .libs/mergedexe .libs/mergedbc.s -pthread -Wl,--export-dynamic .libs/lib1.a -lssl -lcrypto –ldl –pthread .libs/lib2.so<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Ahmad<o:p></o:p></p>
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