FX

Looking at this commit https://github.com/gnuplot/gnuplot/commit/098cd3883416e7c1617b719ac9dfa8277c5c3000#diff-49473dca262eeab3b4a43002adb08b4db31020d190caaad1594b47f1d5daa810R1013 you can see that configure.ac was made to set UIC=uic-qt6, even if it was defined by user, which should not be the case.

Hi, other Homebrew maintainer here. Qt6 does not ship pkgconfig files, so we run configure with explicit paths to the right binaries set in MOC, UIC and RCC. This is working with gnuplot 5.4.8 and fails with 5.4.9. Somehow how UIC value is not obeyed. Our full configure line is: ./configure --disable-dependency-tracking --disable-silent-rules --prefix=/opt/homebrew/Cellar/gnuplot/5.4.9 --with-readline=/opt/homebrew/opt/readline --disable-wxwidgets --with-qt --without-x --without-latex MOC=/opt/homebrew/opt/qt/share/qt/libexec/moc...

Hi, other Homebrew maintainer here. Qt6 does not ship pkgconfig files, so we run configure with explicit paths to the right binaries set in MOC, UIC and RCC. This is working with gnuplot 5.4.8 and fails with 5.4.9. Somehow how UIC value is not obeyed.

If you look at the latest comments in https://bugreports.qt.io/browse/QTBUG-86080 you will see that it was only restored on some platforms. pkg-config files are not generated when Qt is built with static libraries, or when building for macOS.

Hi, I backported the commit at https://sourceforge.net/p/gnuplot/gnuplot-main/ci/e458b88e481e8af4ef2d97c9af79fdf40e40ed81/ to 5.4.8 and it did not compile. The build is done with: ./configure --disable-dependency-tracking --disable-silent-rules --prefix=/opt/homebrew/Cellar/gnuplot/5.4.8_1 --with-readline=/opt/homebrew/opt/readline --without-tutorial --disable-wxwidgets --with-qt --without-x --without-latex but it fails with: checking Checking for Qt6 support libraries... checking for QT... configure:...

OK, so Qt 6 is not always shipping pkg-config style .pc files. In particular, it's not shipping them on macOS, where it is built as a series of frameworks. https://bugreports.qt.io/browse/QTBUG-86080

OK, using QT_LIBS and QT_CFLAGS and UIC as environment varibales, I can proceed further with the build. Another error is this: qtterminal/QtGnuplotItems.cpp:114:17: error: no member named 'width' in 'QFontMetricsF' return metrics.width(m_text); ~~~~~~~ ^ I think horizontalAdvance() should be used instead?

Replacing width() with horizontalAdvance() above, this is what I obtain. Is the text issue (blue box in the middle) expected? Otherwise, seems to work well.