[Development] [Announce] Qt 5.8.0 RC released

[Tim Blechmann]

>>> cd gui/ && ( test -e Makefile ||
>>> /Users/tim/dev/qt3rd/build-Qt-5.x-dev-macx-clang-static/qtbase/bin/qmake
>>> -o Makefile /Users/tim/dev/qt3rd/qtbase/src/gui/gui.pro -qtconf
>>> /Users/tim/dev/qt3rd/build-Qt-5.x-dev-macx-clang-static/qtbase/bin/qt.con
>>> f -- -qt-zlib -qt-harfbuzz -no-glib -confirm-license -nomake tests -nomake
>>> examples -skip qtwebchannel -skip qtscript -system-libpng -I
>>> /Users/tim/dev/qt3rd/3rdparty-builds/libpng/ -L
>>> /Users/tim/dev/qt3rd/3rdparty-builds/libpng/lib/osx -system-libjpeg -I
>>> /Users/tim/dev/qt3rd/3rdparty-builds/libjpeg/ -L
>>> /Users/tim/dev/qt3rd/3rdparty-builds/libjpeg/lib/osx -system-zlib -I
>>> /Users/tim/dev/qt3rd/3rdparty-builds/zlib/ -L
>>> /Users/tim/dev/qt3rd/3rdparty-builds/zlib/lib/osx -commercial
>>> -debug-and-release -static -prefix
>>> /Users/tim/dev/qt3rd/Qt-5.x-dev-macx-clang-static -platform macx-clang )
>>> && /Applications/Xcode.app/Contents/Developer/usr/bin/make -f Makefile
>>> Project ERROR: Library 'libpng' is not defined.
>>> make: *** [sub-gui-make_first] Error 3
>>
>> any idea how i can get qt-5.8 to compile again?
> 
> Nuke your build dir completely, including and especially hidden files and 
> config.cache.

first thing that i had tried ;)

--

seems the be related to -system-zlib when -system-libpng is used.

steps to reproduce:
* install libpng via homebrew
* configure qt via: ../configure -system-zlib -system-libpng -platform
macx-clang


using's qt-zlib seems to work:
../configure -qt-zlib -system-libpng -platform macx-clang