GitHub pull request #3642 of commit e3e181583bd417d981fa65b365db9ccfdde2174e, no merge conflicts.sha1origin/pr/3642/mergeghprbActualCommite3e181583bd417d981fa65b365db9ccfdde2174eghprbActualCommitAuthorghprbActualCommitAuthorEmailghprbAuthorRepoGitUrlhttps://github.com/shunghsiyu/bcc.gitghprbTriggerAuthorDave MarchevskyghprbTriggerAuthorEmaildavemarchevsky@gmail.comghprbTriggerAuthorLogindavemarchevskyghprbTriggerAuthorLoginMention@davemarchevskyghprbPullId3642ghprbTargetBranchmasterghprbSourceBranchfix_linking_when_disable_usdtGIT_BRANCHfix_linking_when_disable_usdtghprbPullAuthorEmailghprbPullAuthorLoginshunghsiyughprbPullAuthorLoginMention@shunghsiyughprbPullDescriptionGitHub pull request #3642 of commit e3e181583bd417d981fa65b365db9ccfdde2174e, no merge conflicts.ghprbPullTitleDo not export USDT function when ENABLE_USDT is OFFghprbPullLinkhttps://github.com/iovisor/bcc/pull/3642ghprbPullLongDescriptionHere's a rather naive attempt to fix #3641 ...\r\n\r\n---\r\n\r\nWhen compiling with CMAKE_USE_LIBBPF_PACKAGE=yes and ENABLE_USDT=OFF, linking of test_static will fail due to undefined references to `bcc_usdt_new_frompath`, `bcc_usdt_close` and `bcc_usdt_new_frompid`. The reference comes from link_all.cc which references those functions irrespective of ENABLE_USDT.\r\n\r\nAs a fix, introduce EXPORT_USDT and wrap references to USDT functions inside link_all.cc within #ifdef.ghprbCommentBody[buildbot, ok to test]ghprbGhRepositoryiovisor/bccghprbCredentialsId6d3daf13-69b8-48b1-9c8f-ec5353264113false<a title="Do not export USDT function when ENABLE_USDT is OFF" href="https://github.com/iovisor/bcc/pull/3642">PR #3642</a>: Do not export USDT function...#116613099427460664bcc-pr #11661166false11669337SUCCESS1633022860241https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/1166/git1166https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=fc25/1166/1166https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=fc26/1166/1166https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=fc27/1166/1166https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=fc28/1166/1166https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=ubuntu1604/1166/1166https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=ubuntu1710/1166/1166https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=ubuntu1804/1166/