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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Failure to find SIP on macOS","articleBody":"When testing ROS 2 Galactic (actually rolling since we haven't forked yet) on macOS Mojave, packages downstream of `python_qt_binding` fail to find SIP like this:\r\n\r\n```\r\nStarting \u003e\u003e\u003e qt_gui_cpp\r\n--- stderr: qt_gui_cpp                                                          \r\nCMake Warning at /Users/william/ros2_rolling/install/python_qt_binding/share/python_qt_binding/cmake/sip_helper.cmake:27 (message):\r\n  SIP binding generator NOT available.\r\nCall Stack (most recent call first):\r\n  src/qt_gui_cpp_sip/CMakeLists.txt:56 (include)\r\n\r\n\r\nCMake Error at src/CMakeLists.txt:10 (message):\r\n  No Python binding generator found.\r\n\r\n\r\n---\r\nFailed   \u003c\u003c\u003c qt_gui_cpp [2.72s, exited with code 1]\r\n```\r\n\r\nThis is the version of SIP that is installed by default (as of writing) on a fresh macOS machine:\r\n\r\n```\r\nmacos-10:ros2_rolling william$ brew info sip\r\nsip: stable 6.0.3 (bottled), HEAD\r\nTool to create Python bindings for C and C++ libraries\r\nhttps://www.riverbankcomputing.com/software/sip/intro\r\n/usr/local/Cellar/sip/6.0.3_1 (708 files, 10.7MB) *\r\n  Poured from bottle on 2021-04-14 at 16:26:19\r\nFrom: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/sip.rb\r\nLicense: GPL-2.0-only or GPL-3.0-only\r\n==\u003e Dependencies\r\nRequired: python@3.9 ✔\r\n==\u003e Options\r\n--HEAD\r\n\tInstall HEAD version\r\n==\u003e Analytics\r\ninstall: 31,588 (30 days), 79,774 (90 days), 258,068 (365 days)\r\ninstall-on-request: 7,641 (30 days), 12,754 (90 days), 32,176 (365 days)\r\nbuild-error: 0 (30 days)\r\nmacos-10:ros2_rolling william$ brew search sip\r\n==\u003e Formulae\r\nbaresip    libexosip  libosip    sip ✔      sipcalc    sipp       sipsak     sofia-sip\r\n==\u003e Casks\r\nhomebrew/cask/sip\r\n```\r\n\r\nI'm not sure if it is because we just need something like https://github.com/ros-visualization/python_qt_binding/pull/94 to be merged, or if SIP\u003e=6 is supposed to be used with Qt 6 (we're still using Qt 5 as `qt@5` on macOS, but there's no equivalent for sip that I can find in homebrew).","author":{"url":"https://github.com/wjwwood","@type":"Person","name":"wjwwood"},"datePublished":"2021-04-15T19:44:26.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":15},"url":"https://github.com/103/python_qt_binding/issues/103"}