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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Build failure when building against zxing-cpp 3.0.0+","articleBody":"Previously building feather would trigger the following warning:\n\n```\n[ 94%] Building CXX object src/CMakeFiles/feather.dir/qrcode/utils/QrCodeUtils.cpp.o\ncd /build/reproducible-path/feather-wallet-2.8.1+dfsg/obj-x86_64-linux-gnu/src \u0026\u0026 /usr/bin/c++ -DFEATHER_TARGET_TRIPLET=\\\"\\\" -DFEATHER_VERSION=\\\"2.8.1\\\" -DHAS_WEBSOCKET=1 -DQT_CORE_LIB -DQT_GUI_LIB -DQT_MULTIMEDIAWIDGETS_LIB -DQT_MULTIMEDIA_LIB -DQT_NETWORK_LIB -DQT_NO_DEBUG -DQT_NO_DEBUG=1 -DQT_SVGWIDGETS_LIB -DQT_SVG_LIB -DQT_WAYLANDCLIENT_LIB -DQT_WEBSOCKETS_LIB -DQT_WIDGETS_LIB -DTOR_VERSION=\\\"\\\" -DWITH_SCANNER=1 -I/build/reproducible-path/feather-wallet-2.8.1+dfsg/obj-x86_64-linux-gnu/src/feather_autogen/include -I/build/reproducible-path/feather-wallet-2.8.1+dfsg/monero/include -I/build/reproducible-path/feather-wallet-2.8.1+dfsg/monero/src -I/build/reproducible-path/feather-wallet-2.8.1+dfsg/monero/external -I/build/reproducible-path/feather-wallet-2.8.1+dfsg/monero/external/easylogging++ -I/build/reproducible-path/feather-wallet-2.8.1+dfsg/monero/contrib/epee/include -I/build/reproducible-path/feather-wallet-2.8.1+dfsg/src -I/build/reproducible-path/feather-wallet-2.8.1+dfsg/src/libwalletqt -I/build/reproducible-path/feather-wallet-2.8.1+dfsg/src/model -I/build/reproducible-path/feather-wallet-2.8.1+dfsg/src/utils -I/build/reproducible-path/feather-wallet-2.8.1+dfsg/src/qrcode -I/build/reproducible-path/feather-wallet-2.8.1+dfsg/monero/contrib/epee/src/../include -isystem /usr/include/x86_64-linux-gnu/qt6/QtCore -isystem /usr/include/x86_64-linux-gnu/qt6 -isystem /usr/lib/x86_64-linux-gnu/qt6/mkspecs/linux-g++ -isystem /usr/include/x86_64-linux-gnu/qt6/QtWidgets -isystem /usr/include/x86_64-linux-gnu/qt6/QtGui -isystem /usr/include/x86_64-linux-gnu/qt6/QtNetwork -isystem /usr/include/x86_64-linux-gnu/qt6/QtSvg -isystem /usr/include/x86_64-linux-gnu/qt6/QtWebSockets -isystem /usr/include/x86_64-linux-gnu/qt6/QtSvgWidgets -isystem /usr/include/x86_64-linux-gnu/qt6/QtMultimedia -isystem /usr/include/x86_64-linux-gnu/qt6/QtMultimediaWidgets -isystem /usr/include/x86_64-linux-gnu/qt6/QtWaylandClient -g -O2 -ffile-prefix-map=/build/reproducible-path/feather-wallet-2.8.1+dfsg=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wdate-time -D_FORTIFY_SOURCE=2 -Wdate-time -D_FORTIFY_SOURCE=2   -Wformat -Wformat-security -fstack-protector -fstack-protector-strong -fcf-protection=full -fstack-clash-protection -fPIC -Dcryptonote=MWYSUTPAXIBT -std=gnu++17 -MD -MT src/CMakeFiles/feather.dir/qrcode/utils/QrCodeUtils.cpp.o -MF CMakeFiles/feather.dir/qrcode/utils/QrCodeUtils.cpp.o.d -o CMakeFiles/feather.dir/qrcode/utils/QrCodeUtils.cpp.o -c /build/reproducible-path/feather-wallet-2.8.1+dfsg/src/qrcode/utils/QrCodeUtils.cpp\nIn file included from /build/reproducible-path/feather-wallet-2.8.1+dfsg/src/qrcode/utils/QrCodeUtils.cpp:4:\n/build/reproducible-path/feather-wallet-2.8.1+dfsg/src/qrcode/utils/QrCodeUtils.h:30:87: warning: ‘using ZXing::DecodeHints = class ZXing::ReaderOptions’ is deprecated [-Wdeprecated-declarations]\n   30 |     static Result ReadBarcode(const QImage\u0026 img, const ZXing::DecodeHints\u0026 hints = { });\n      |                                                                                       ^\nIn file included from /usr/include/ZXing/ReadBarcode.h:8,\n                 from /build/reproducible-path/feather-wallet-2.8.1+dfsg/src/qrcode/utils/QrCodeUtils.h:10:\n/usr/include/ZXing/ReaderOptions.h:176:7: note: declared here\n  176 | using DecodeHints [[deprecated]] = ReaderOptions;\n      |       ^~~~~~~~~~~\n/build/reproducible-path/feather-wallet-2.8.1+dfsg/src/qrcode/utils/QrCodeUtils.cpp:6:83: warning: ‘using ZXing::DecodeHints = class ZXing::ReaderOptions’ is deprecated [-Wdeprecated-declarations]\n    6 | Result QrCodeUtils::ReadBarcode(const QImage\u0026 img, const ZXing::DecodeHints\u0026 hints)\n      |                                                                                   ^\n/usr/include/ZXing/ReaderOptions.h:176:7: note: declared here\n  176 | using DecodeHints [[deprecated]] = ReaderOptions;\n      |       ^~~~~~~~~~~\n/build/reproducible-path/feather-wallet-2.8.1+dfsg/src/qrcode/utils/QrCodeUtils.cpp: In lambda function:\n/build/reproducible-path/feather-wallet-2.8.1+dfsg/src/qrcode/utils/QrCodeUtils.cpp:13:44: warning: ‘ZXing::ImageFormat::BGRX’ is deprecated: use BGRA [-Wdeprecated-declarations]\n   13 |                 return ZXing::ImageFormat::BGRX;\n      |                                            ^~~~\nIn file included from /usr/include/ZXing/ReadBarcode.h:9:\n/usr/include/ZXing/ImageView.h:29:9: note: declared here\n   29 |         BGRX [[deprecated(\"use BGRA\")]] = BGRA,\n      |         ^~~~\n/build/reproducible-path/feather-wallet-2.8.1+dfsg/src/qrcode/utils/QrCodeUtils.cpp:24:44: warning: ‘ZXing::ImageFormat::RGBX’ is deprecated: use RGBA [-Wdeprecated-declarations]\n   24 |                 return ZXing::ImageFormat::RGBX;\n      |                                            ^~~~\n/usr/include/ZXing/ImageView.h:27:9: note: declared here\n   27 |         RGBX [[deprecated(\"use RGBA\")]] = RGBA,\n```\n\nThe usage of `DecodeHints` is deprecated, see:\n\nhttps://github.com/feather-wallet/feather/blob/1b1b5f47aecff34037cdb719d566e35530dd6c65/src/qrcode/utils/QrCodeUtils.h#L30\n\nThis interface has been removed in https://github.com/zxing-cpp/zxing-cpp/commit/a9a2b20ffe35593f08ebe69b37ccf270915a894b .\n\nWith zxing-cpp 3.0.0+, the software building would result in errors due to its removal of deprecated interface:\n\n```\nIn file included from /build/reproducible-path/feather-wallet-2.8.1+dfsg/src/widgets/PayToEdit.cpp:16:\n/build/reproducible-path/feather-wallet-2.8.1+dfsg/src/qrcode/utils/QrCodeUtils.h:30:63: error: ‘DecodeHints’ in namespace ‘ZXing’ does not name a type\n   30 |     static Result ReadBarcode(const QImage\u0026 img, const ZXing::DecodeHints\u0026 hints = { });\n      |                                                               ^~~~~~~~~~~\nmake[3]: *** [src/CMakeFiles/feather.dir/build.make:2221: src/CMakeFiles/feather.dir/widgets/PayToEdit.cpp.o] Error 1\n```\n\nPlease consider replacing the usage of deprecated apis and make your software compatible with zxing-cpp 3.0.0+. Thanks!","author":{"url":"https://github.com/hosiet","@type":"Person","name":"hosiet"},"datePublished":"2026-02-07T16:51:07.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/288/feather/issues/288"}