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List:       pykde
Subject:    Re: Install old version PyQt4 on a mac by compiling the source
From:       Giuseppe Corbelli <corbelligiuseppe () mesdan ! it>
Date:       2021-08-30 6:45:20
Message-ID: fa83ccad-d6ed-ab07-db3f-850893c0867e () mesdan ! it
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On 8/8/21 4:54 PM, Felix Voigt wrote:
> Hello Guiseppe,
> Thanks for the  input!
> The header problem is solved by the following.
> terminal command:
> export QMAKESPEC=unsupported/macx-clang-libc++
> and editing configure.py:
> vi configure.py
> replace
> qt_macx_spec = 'macx-llvm'
> by
> qt_macx_spec = 'unsupported/macx-clang-libc++'
> (Helpful hints found at https://www.dazhuanlan.com/designer_jun/topics/1682372, I \
> do not know, if both actions described above are necessary.) 
> Now, giving
> ~/.pyenv/versions/2.7.17/bin/python2.7 configure.py --qmake \
> /usr/local/Cellar/qt@4/4.8.7_6/bin/qmake \
> --sip=/Users/felixvoigt/.pyenv/versions/2.7.17/bin/sip —verbose results in:
> "Determining the layout of your Qt installation...
> /usr/local/Cellar/qt@4/4.8.7_6/bin/qmake -spec unsupported/macx-clang-libc++ -o \
> qtdirs.mk qtdirs.pro make -f qtdirs.mk
> clang++ -c -pipe -stdlib=libc++ -mmacosx-version-min=10.7 -O2 -arch x86_64 -Wall -W \
> -DQT_NO_DEBUG -DQT_CORE_LIB -DQT_SHARED \
> -I/usr/local/etc/qt4/mkspecs/unsupported/macx-clang-libc++ -I. \
> -I/usr/local/Cellar/qt@4/4.8.7_6/lib/QtCore.framework/Versions/4/Headers \
> -I/usr/local/include -I. -F/usr/local/lib -o qtdirs.o qtdirs.cpp clang++ \
> -headerpad_max_install_names -stdlib=libc++ -mmacosx-version-min=10.7 -arch x86_64 \
> -o qtdirs.app/Contents/MacOS/qtdirs qtdirs.o   -F/usr/local/lib -L/usr/local/lib \
> -framework QtCore -L/usr/local/opt/openssl@1.0/lib \
>                 -L/usr/local/Cellar/qt@4/4.8.7_6/lib
> ld: framework not found QtCore
> clang: error: linker command failed with exit code 1 (use -v to see invocation)
> make: *** [qtdirs.app/Contents/MacOS/qtdirs] Error 1
> Error: Failed to determine the layout of your Qt installation. Try again using
> the --verbose flag to see more detail about the problem.
> "
> 
> As far as I see, clang is now used and the libc++ headers are found. But QtCore is \
> not found.

QtCore shared library, yes.

> I tried to include the path to QtCore by adding in the
> ~/.bash_profile  "export PATH=…:$PATH" statements, without success. There must be \
> another way to give the right path to QtCore to the right actor.

clang gets -L/usr/local/Cellar/qt@4/4.8.7_6/lib as the only relevant 
extra library path. I assume Qt libs are to be found there. As the error 
messages says, rerun with -v to get some details.

> Finally I gave up to install PyQt4,
> I decided to use PyQt5 and PyQt6 and use newer code to learn it.

And that's far from being a bad idea.

-- 
Giuseppe Corbelli


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