Some experiences having just tried moving my main application to Cocoa
without upgrading to Catalina. The results look very promising, and my
application looks usable, though I didn't try running 64 bit Lazarus. i
can make the following observations:
1. For 32 bit compilation you need to avoid upgrading to the latest
xcode; 10.3 looks like the last one that has the required 32 bit
components. Older versions of xcode can be downloaded from the Apple
developer site, and at least some co-existence is possible. (I ended up
with 10.3 installed in my home directory.)
2. I typically compile with all range checks on, and this triggered some
range checks in the widegt set - see
https://bugs.freepascal.org/view.php?id=36171
3. Fixed point fonts can have non-integer spacings; I was using
CarbonWidgetSet.SetTextFractional(Canvas, False) but this does not seem
to be available under Cocoa so I had to specify the spacing in ExtTextOut.
4. Polyline, at least for large numbers of points. seems to be 10 times
slower than under Carbon, which is itself slower than other OS's
5. For compiling trunk FPC I use:
FPC=~/fpc/bootstrap/ppc386 make distclean DEBUG=1 install PREFIX=~/usr
CPU_SOURCE=i386
OPT=-Fl/Users/me/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/lib
to compile a 32 bit compiler to ~/usr starting from a 32 bit compiler and
FPC=~/fpc/bootstrap/ppcx64 make distclean DEBUG=1 install PREFIX=~/usr64
CPU_SOURCE=x86_64
OPT=-Fl/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/lib
to compile a 64 bit compiler to ~/usr64 starting from a 64 bit compiler.
I add symbolic links in the two directories:
for f in usr usr64 ; do
cd ~/$f/bin
if [ ! -L ppc386 ] ; then ln -s ~/usr/lib/fpc/$VER/ppc386 ; fi
if [ ! -L ppcx64 ] ; then ln -s ~/usr64/lib/fpc/$VER/ppcx64 ; fi
done
and with this setup lazarus can pick up the two compilers.
Colin
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