qtwidgets compilation fails (emerge world -ev) because it does not depend on dev-libs/double-conversion which it needs. From compilation log: xcb-xlib.cpp:47:23: warning: unused variable ‘connection’ [-Wunused-variable] xcb_connection_t *connection = XGetXCBConnection(dpy); ^ x86_64-pc-linux-gnu-g++ -Wl,-O1 -Wl,--as-needed -Wl,-O1 -o xcb-xlib xcb-xlib.o -lxcb-sync -lxcb-xfixes -lxcb-randr -lxcb-image -lxcb-shm -lxcb-keysyms -lxcb-icccm -lxcb-shape -lxcb -lX11 -lX11-xcb xcb-xlib enabled. Warning: Disabling Linux Accessibility Bridge: DBus is missing. checking for DoubleConversion... x86_64-pc-linux-gnu-g++ -c -O2 -pipe -march=native -O2 -Wall -W -fPIC -I. -I/var/tmp/portage/dev-qt/qtwidgets-5.7.1/work/qtbase-opensource-src-5.7.1/mkspecs/linux-g++ -o doubleconversion.o doubleconversion.cpp doubleconversion.cpp:40:49: fatal error: double-conversion/double-conversion.h: No such file or directory compilation terminated. gmake: *** [Makefile:165: doubleconversion.o] Error 1 DoubleConversion disabled. No system libdouble-conversion found. * ERROR: dev-qt/qtwidgets-5.7.1::gentoo failed (configure phase): * configure failed * * Call stack: * ebuild.sh, line 115: Called src_configure * environment, line 2754: Called qt5-build_src_configure * environment, line 2363: Called qt5_base_configure * environment, line 2476: Called die * The specific snippet of code: * "${S}"/configure "${conf[@]}" || die "configure failed"; * * If you need support, post the output of `emerge --info '=dev-qt/qtwidgets-5.7.1::gentoo'`, * the complete build log and the output of `emerge -pqv '=dev-qt/qtwidgets-5.7.1::gentoo'`. * The complete build log is located at '/var/tmp/portage/dev-qt/qtwidgets-5.7.1/temp/build.log'. * The ebuild environment file is located at '/var/tmp/portage/dev-qt/qtwidgets-5.7.1/temp/environment'. * Working directory: '/var/tmp/portage/dev-qt/qtwidgets-5.7.1/work/qtbase-opensource-src-5.7.1' * S: '/var/tmp/portage/dev-qt/qtwidgets-5.7.1/work/qtbase-opensource-src-5.7.1' >>> Failed to emerge dev-qt/qtwidgets-5.7.1, Log file: >>> '/var/tmp/portage/dev-qt/qtwidgets-5.7.1/temp/build.log'
*** This bug has been marked as a duplicate of bug 613102 ***
