René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Two copies of `zlib` are linked when using local build of zlib ","articleBody":"### Reproduction steps\r\n```\r\ngit clone https://github.com/libgit2/libgit2.git\r\ncd libgit2\r\nmkdir build\r\ncd build\r\ncmake   -DBUILD_CLAR=OFF -DUSE_HTTPS=OpenSSL -DUSE_SSH=OFF -DWINHTTP=OFF \\\r\n        -DOPENSSL_ROOT_DIR=/Users/dave/build/OpenCOR/src/plugins/thirdParty/OpenSSL/ext \\\r\n        -DOPENSSL_SSL_LIBRARY=/Users/dave/build/OpenCOR/src/plugins/thirdParty/OpenSSL/ext/lib/libssl.1.0.0.dylib \\\r\n        -DOPENSSL_CRYPTO_LIBRARY=/Users/dave/build/OpenCOR/src/plugins/thirdParty/OpenSSL/ext/lib/libcrypto.1.0.0.dylib \\\r\n        -DZLIB_INCLUDE_DIR=/Users/dave/build/OpenCOR/src/plugins/thirdParty/zlib/ext/include \\\r\n        -DZLIB_LIBRARY=/Users/dave/build/OpenCOR/src/plugins/thirdParty/zlib/ext/lib/libz.1.dylib \\\r\n        -G Ninja ..\r\nninja\r\n$ otool -L libgit2.dylib\r\n```\r\n### Expected behavior\r\n```\r\nlibgit2.dylib:\r\n\t@rpath/libgit2.28.dylib (compatibility version 28.0.0, current version 0.28.0)\r\n\t@rpath/libssl.1.0.0.dylib (compatibility version 1.0.0, current version 1.0.0)\r\n\t@rpath/libcrypto.1.0.0.dylib (compatibility version 1.0.0, current version 1.0.0)\r\n\t@rpath/libz.1.dylib (compatibility version 1.0.0, current version 1.2.11)\r\n\t/usr/lib/libiconv.2.dylib (compatibility version 7.0.0, current version 7.0.0)\r\n\t/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1252.250.1)\r\n```\r\n### Actual behavior\r\n```\r\nlibgit2.dylib:\r\n\t@rpath/libgit2.28.dylib (compatibility version 28.0.0, current version 0.28.0)\r\n\t@rpath/libssl.1.0.0.dylib (compatibility version 1.0.0, current version 1.0.0)\r\n\t@rpath/libcrypto.1.0.0.dylib (compatibility version 1.0.0, current version 1.0.0)\r\n\t@rpath/libz.1.dylib (compatibility version 1.0.0, current version 1.2.11)\r\n\t/usr/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.11)\r\n\t/usr/lib/libiconv.2.dylib (compatibility version 7.0.0, current version 7.0.0)\r\n\t/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1252.250.1)\r\n```\r\nNote the two references to `libz`.\r\n\r\n### Version of libgit2 (release number or SHA1)\r\n\r\n`master`\r\n\r\n### Operating system(s) tested\r\n\r\nmacOS\r\n","author":{"url":"https://github.com/dbrnz","@type":"Person","name":"dbrnz"},"datePublished":"2019-05-21T03:40:32.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/5079/libgit2/issues/5079"}