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<p class="MsoNormal"><span style="font-size:11.0pt">AIX supports two types of shared libraries, AIX-style, and System 5 (SYSV) compatibility libraries. CMake is currently set up to exclusively work with SYSV-style (read the ld man pages for -brtl).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">To do this I’m attempting to set the commands to override linking shared libraries. The default setup forces generating an exports list, which also gives me problems because I explicitly provide one (that
is then overridden by the generated list, which comes out empty in my case). The set commands below almost work, one of the problems is that I can’t see any way to pass flags to commands like “/bin/ar”. Under AIX, tools like ar, nm, etc. have a strict “object
file mode” that can be altered with the -X command line argument. I couldn’t find any place to pass -X64 or -X32 to /bin/ar, and setting CMAKE_AR with a space in it results in CMAKE_AR==”/bin/ar;-X64” which is not what I want. Adding double quotes fails
because they aren’t escaped, so the command ends up being sent with argv[0]==”/bin/ar -X64” which fails. Escaping the space like you see below results in the same behavior. I don’t have any static archives in the project, but I’m pretty sure there would
be problems with them. I want to create the output of the first command to look like the target filename but with a file extension of “so” rather than “a” but I don’t see any way to do that.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "AIX")<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> if(${CMAKE_CXX_COMPILER_ID} STREQUAL "XL")<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> if(CMAKE_SIZEOF_VOID_P MATCHES "8")<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> set(CMAKE_AR /bin/ar\ -X64)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> else()<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> set(CMAKE_AR /bin/ar\ -X32)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> endif()<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> # override the broken commands cmake uses to build shared libs on AIX with XLC<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> set(CMAKE_SHARED_LIBRARY_SUFFIX ".a")<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "")<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> set(CMAKE_SHARED_LINKER_FLAGS_INIT "")<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> set(CMAKE_EXTRA_SHARED_LIBRARY_SUFFIXES ".so")<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> set(CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS "-bM:SRE -bnoentry")<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> set(CMAKE_CXX_CREATE_SHARED_LIBRARY<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> "<CMAKE_CXX_COMPILER> <CMAKE_SHARED_LIBRARY_CXX_FLAGS> <LANGUAGE_COMPILE_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> <SONAME_FLAG><TARGET_SONAME> -o <OBJECT_DIR>/shr.so <OBJECTS>
<LINK_LIBRARIES>;<CMAKE_AR> -cru <TARGET> <OBJECT_DIR>/shr.so"<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> )<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<span style="font-size:11.0pt"><img width="87" height="87" style="width:.9062in;height:.9062in" id="Picture_x0020_1" src="cid:image001.png@01D49622.98B4FEC0" alt="cid:image002.png@01D3D0E3.DCFE6710"><o:p></o:p></span></p>
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<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#E83C21">Rob Boehne</span></b><span style="font-size:11.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Senior Software Architect | Datalogics, Inc.</span><span style="font-size:11.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:11.0pt"><a href="tel:(312)%20853-8351"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#0B4CB4">+1.312.853.8351</span></a></span><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> | <a href="mailto:robb@datalogics.com"><span style="color:#0B4CB4">robb@datalogics.com</span></a></span><span style="font-size:11.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:11.0pt"><a href="http://www.datalogics.com/"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#0B4CB4">datalogics.com</span></a></span><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> | <a href="http://blogs.datalogics.com/"><span style="color:#0B4CB4">blogs.datalogics.com</span></a></span><span style="font-size:11.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Connect with us: <a href="https://www.facebook.com/DatalogicsInc"><span style="color:#0B4CB4">Facebook</span></a> | <a href="https://twitter.com/DatalogicsInc"><span style="color:#0B4CB4">Twitter</span></a> | <a href="https://www.linkedin.com/company/datalogics?actionToken=p=p%3Dbiz-company-login%26c%3D3217e65a-bdc2-4b38-8f9c-13c982e8c529%26m%3Dcompany_feed%26n%3D0&t=a%3DisFolloweeOfPoster%253Dfalse%2526distanceFromActor%253D-1%2526actorType%253D%2526likedByUser%253Dfalse%2526targetId%253D%2526recentCommentUrns%253D%2526targetType%253D%2526sponsoredFlag%253DORGANIC%2526verbType%253Dlinkedin%25253Ashare%2526objectType%253Dlinkedin%25253Aarticle%2526totalShares%253D0%2526activityId%253Durn%25253Ali%25253Aactivity%25253A6263731876121362433%2526recentLikerUrns%253D%2526actorId%253Durn%25253Ali%25253Acompany%25253A14000%2526totalComments%253D0%2526relevanceScore%253D0.0%2526recentCommenterUrns%253D%2526isPublic%253Dtrue%2526time%253D-1%2526totalLikes%253D0%2526objectId%253Durn%25253Ali%25253Aarticle%25253A7793179909183391510%2526distanceFromNestedActor%253D-1%26s%3DORG"><span style="color:#0B4CB4">LinkedIn</span></a> | <a href="https://www.youtube.com/user/Datalogics"><span style="color:#0B4CB4">YouTube</span></a></span><span style="font-size:11.0pt"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial",sans-serif"> </span><span style="font-size:11.0pt"><o:p></o:p></span></p>
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