I am looking for an easy way to have all cortex-m compilers available at
the same time to be able to do automated building/testing
Inspired by the -V parameter of fpc I started my journey and ended up
with something different.
My question is now did I go down the correct path or is there a better
way to fulfill my requirements:
- I want to be able to switch between armv6m, armv7m and armv7em without
the need to build the matching compiler/rtl
- I want lazarus to use fpc as start compiler, I want to be able to
configure the whole compiler switching via Project settings.
- I want to be able to use lazbuild so that I can do automated builds of
my lazarus projects.
I found this helpful page:
http://wiki.freepascal.org/FPC_Version_Switcher#Setting_the_fpc_frontend_executable_path
but in the end this approach did not work for me, FPC version switcher
is not available in lazarus svn (or I am too blind to find it) and in
the end I had some issues with using lazbuild when defining the -V
switch in my project settings.
In the end I came up with the following approach:
Build ppcrossarm and make sure that the rtls do end up in those directories:
/usr/local/lib/fpc/3.1.1/units/arm-embedded/armv6m/rtl
/usr/local/lib/fpc/3.1.1/units/arm-embedded/armv7m/rtl
/usr/local/lib/fpc/3.1.1/units/arm-embedded/armv7em/rtl
created a softlink so that the crosscompiler can be caled via
/usr/local/bin/fpc
ln -sf /usr/local/lib/fpc/3.1.1/ppcrossarm /usr/local/bin/ppcarm
added the following to my /etc/fpc.cfg:
#ifdef embedded
-Fu/usr/local/lib/fpc/$fpcversion/units/$fpctarget/$fpcsubarch/rtl
#endif
and then I add the following lines to the user-defined project settings
in Lazarus:
-Cparmv7em
-XP/usr/local/bin/arm-none-eabi-
-Wpnucleof411re
-dnucleof411re
I thought about putting
-Fu/usr/local/lib/fpc/3.1.1/units/arm-embedded/armv7em/rtl
in the project Settings so that I do not need to tweak /etc/fpc.cfg but
I do not like the fact that I have to hardcode paths there, is there a
better way? If yes then I'd prefer that a lot over tweaking /etc/fpc.cfg
Michael
------
Here's how I build the cross-compiler:
SUBARCH=armv6m
#SUBARCH=armv7m
#SUBARCH=armv7em
make clean buildbase CROSSINSTALL=1 OS_TARGET=embedded CPU_TARGET=arm
SUBARCH=$SUBARCH CROSSOPT="$CROSSOPT" BINUTILSPREFIX=arm-none-eabi- ||
exit 1
make installbase CROSSINSTALL=1 OS_TARGET=embedded CPU_TARGET=arm
SUBARCH=$SUBARCH CROSSOPT="$CROSSOPT" BINUTILSPREFIX=arm-none-eabi-
INSTALL_UNITDIR=/usr/local/lib/fpc/3.1.1/units/arm-embedded/$SUBARCH/rtl
|| exit 1
cp /usr/local/lib/fpc/3.1.1/ppcrossarm
/usr/local/lib/fpc/3.1.1/ppcrossarm-$SUBARCH
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