Hi,
The cross-compilation capacity of CT is very very interesting but be careful with the configuration of FPC, Typhon and the Widget.
I've made some research on to cross-compile the same project with multi-target widget (x86/x64 + QT4/5 or GTK).
The first problem I was confronted with the last release of CT is the configuration of fpc.cfg.
Because directory inclusion is not correct for my own system. I'm on Linux Mint 18.2 x64. And I use by default the gcc/g++ 7 stable release.
Compilation of FPC, typhon64/32 working correctly but fpc.cfg was not configured exactly as needed for cross compilation. It's the same with release 6 or 5 of gcc/g++. So be careful with your own configuration of gcc/g++. And check installation, the default release...
So I've configured the search libraries with that on fpc.cfg :
-Fl/usr/lib64
-Fl/usr/lib/x86_64-linux-gnu
-Fl/usr/lib/gcc/x86_64-linux-gnu/5
-Fl/usr/lib/gcc/x86_64-linux-gnu/6
-Fl/usr/lib/gcc/x86_64-linux-gnu/7
-Fl/usr/local/codetyphon/fpc/fpc64/units/$fpctarget
-Fl/usr/local/codetyphon/qt4pas/$fpctarget
-Fl/usr/local/codetyphon/qt5pas/$fpctarget
-Fl/usr/local/codetyphon/binLibraries/$fpctarget
and for have a correct cross-compilation for linux x86 :
# binutils prefix for cross compiling
#IFDEF FPC_CROSSCOMPILING
#IFDEF cpui386
-Fl/usr/lib/i386-linux-gnu
-Fl/usr/lib/gcc/x86_64-linux-gnu/5/32
-Fl/usr/lib/gcc/x86_64-linux-gnu/6/32
-Fl/usr/lib/gcc/x86_64-linux-gnu/7/32
-Fl/usr/local/codetyphon/fpc/fpc64/units/$fpctarget
-Fl/usr/local/codetyphon/qt4pas/$fpctarget
-Fl/usr/local/codetyphon/qt5pas/$fpctarget
-Fl/usr/local/codetyphon/binLibraries/$fpctarget
-FL/usr/local/codetyphon/binLibraries/$fpctarget/ld-linux-so.2
#ENDIF
#ENDIF
Note that I've remove the -XP$fpctarget- that it wasn't useful for me.
At start I said that I've made some tests for QT4/5 and GTK3 compilation/cross-compilation, because some projects of mind need that. I have saw that for CodeTyphon project (*.ctpr) it's not possible to have multi-widget configuration (QT4/5+GTK).
The best way is to a multi-project with a dedicated project for a specific widget add main.pas and other in all projects after. There's no difficulties with Windows target.
