All the instructions I can find on building a cross compiler say to pas
CPU_TARGET and OS_TARGET as makefile parameters.
(According to:
http://wiki.lazarus.freepascal.org/Cross_compiling
http://wiki.freepascal.org/WinCE_port
etc)
But when I use this notation, the make fails because it can't find the
to-be-build binary already built:
make clean all CPU_TARGET=arm OS_TARGET=OS_TARGET
Makefile:129: *** Compiler ppcrossarm not found. Stop.
Of course it can't find ppcrossarm, it's supposed to be building ppcrossarm!
It doesn't matter if I use make target crossall or pass CROSSCOMPILE=1
it still complains
When I look in the makefile, it is built like that:
ifndef FPC
FPCPROG:=$(strip $(wildcard $(addsuffix /fpc$(SRCEXEEXT),$(SEARCHPATH))))
ifneq ($(FPCPROG),)
FPCPROG:=$(firstword $(FPCPROG))
ifneq ($(CPU_TARGET),)
FPC:=$(shell $(FPCPROG) -P$(CPU_TARGET) -PB)
else
FPC:=$(shell $(FPCPROG) -PB)
endif
So if I specify CPU_TARGET I must also specify FPC, but the makefile
seems very devoted to working out what FPC should be, so I hate to
override it like that.
Perhaps this is only problem when building the compiler itself?
But this still doesn't seem to compile arm; the build output shows
things like:
# make --debug=vij crossall CPU_TARGET=arm OS_TARGET=wince
FPC=/usr/bin/ppc386
...
...
/tmp/fpc_patchdir/fpc/compiler/ppc -Ur -Ur -Xs -O2 -n -Fi../inc
-Fi../i386 -Fi../unix -Fii386 -FE.
-FU/tmp/fpc_patchdir/fpc/rtl/units/i386-linux -di386 -dRELEASE
../objpas/fmtbcd.pp
I guess my invocation is supposed to be for building the rtl and such
like, not actually building a cross compiler.
Which doesn't explain all the wiki pages using this notation to build
the cross compiler....
How should one tell the makefile to build a cross compiler, i.e. that
runs on the native CPU/OS but compiles code for the new CPU/OS
Sam
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