*** My host is linux ubuntu 18.04 64bit,
*** target is to build linux 64bit , and cross build win32 program
* download and install 3 packages : fpc-src, fpc-laz and lazarus-project
fpc-src_3.2.2-210709_amd64.deb
fpc-laz_3.2.2-210709_amd64.deb
lazarus-project_2.2.4-0_amd64.deb
* install
$ sudo dpkg -i fpc-src_3.2.2-210709_amd64.deb
$ sudo dpkg -i fpc-laz_3.2.2-210709_amd64.deb
$ sudo apt install ./lazarus-project_2.2.4-0_amd64.deb
* check if successful
$ apt-cache policy fpc-src fpc-laz lazarus-project
** not need if you want remove
** $ apt remove fpc-src fpc-laz lazarus-project
* How to build win32 exe file from linux 64bit host
[00.] copy /usr/share/fpcsrc/3.2.2 to your ~/fpcsrc/3.2.2
[01.] cd ~/fpcsrc/3.2.2
[02.] make clean all OS_TARGET=win32 CPU_TARGET=i386
[03.] sudo make crossinstall OS_TARGET=win32 CPU_TARGET=i386 INSTALL_PREFIX=/usr
[04.] sudo ln -sf /usr/lib/fpc/3.2.2/ppcross386 /usr/bin/ppcross386
[05.] launch lazarus ,open a hello project,
project options -- compiler options -- config and target
Target OS(-T) Win32
Target Cpu(-P) i386
Target processor 386/486(-cp80386)
[06.] Run -- clean up and build
*** below is for 64bit host , to gen linux 32bit code
#!/bin/bash
# name this file /usr/bin/i386-linux-ld
ld -A elf32-i386 $@
----^^ and save to disk
----make file i386-linux-as ---
#!/bin/bash
# name this file /usr/bin/i386-linux-as
as --32 $@
----^^
* copy above 2 bash file to /usr/bin/ , and let it as exe file
$ chmod +x i386-linux-as
$ chmod +x i386-linux-ld
01. cd ~/fpcsrc/3.2.2
02. make clean all OS_TARGET=linux CPU_TARGET=i386
03. sudo make crossinstall OS_TARGET=linux CPU_TARGET=i386 INSTALL_PREFIX=/usr
