Arch Linux

Description:

Beginning with qt6-base 6.1.0-1, some Qt host binaries are installed under /usr/lib/qt6 rather than /usr/lib/qt6/bin.
However, "qmake6 -query QT_HOST_BINS" still gives "/usr/lib/qt6/bin".
This makes build tools that rely on QT_HOST_BINS (including meson) unable to find the binaries.

If this is an upstream issue rather than a packaging issue, I can report it upstream.

Sample meson output:

Detecting Qt6 tools
qmake found: YES (/usr/bin/qmake6) 6.2.2
Run-time dependency qt6 (modules: Core) found: YES 6.2.2 (qmake)
Program /usr/lib/qt6/bin/moc found: NO
Program moc-qt6 found: NO
Program moc found: NO found 5.15.2 but need: '== 6.2.2' (/usr/bin/moc)
Program /usr/lib/qt6/bin/uic found: NO
Program uic-qt6 found: NO
Program uic found: NO found 5.15.2 but need: '== 6.2.2' (/usr/bin/uic)
Program /usr/lib/qt6/bin/rcc found: NO
Program rcc-qt6 found: NO
Program rcc found: NO found 5.15.2 but need: '== 6.2.2' (/usr/bin/rcc)
Program /usr/lib/qt6/bin/lrelease found: YES 6.2.2 (/usr/lib/qt6/bin/lrelease)

meson.build:47:2: ERROR: RCC sources specified and couldn't find rcc-qt6, please check your qt6 installation


Additional info:
* package version(s)
qt6-base 6.2.2-4
meson 0.60.3-1

Steps to reproduce:

$ tar tf qt6-base-6.0.4-1-x86_64.pkg.tar.zst | grep -E '(rcc|uic|moc)$'
usr/lib/qt6/bin/moc
usr/lib/qt6/bin/rcc
usr/lib/qt6/bin/uic

$ tar tf qt6-base-6.1.0-1-x86_64.pkg.tar.zst | grep -E '(rcc|uic|moc)$'
usr/lib/qt6/moc
usr/lib/qt6/rcc
usr/lib/qt6/uic

$ qmake6 -query QT_HOST_BINS
/usr/lib/qt6/bin