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View Full Version : Android, FPC and lazarus corss-compilation



code_glitch
19-01-2012, 11:11 PM
Yup, its come this... The article for PGD gamer has taken a turn for the worse. The wiki instructions worked once and once only - I got one APK out and the next F8 key later it was crash this, error that... Of course, I tried trawling over the darn pages again and again, but a human can only hit his head against a wall so many times before going insane, so here's where I'm at (where I think I know it all works well):

Setup:
Virtual machine of x86 Linux Mint 11 (its 100% ubuntu compatible so no problems there, just better performance :) )
A copy of the Android NDK and SDK (its possible the NDK is a little iffy but the emulator and what not works)
A copy of freepascal 2.6.0 for x86 from the freepascal.org deb files
A copy of the Sun java 6 sdk from the APT repo

What doesn't seem to work:
The scripts detailed on this page: http://wiki.lazarus.freepascal.org/Setup_Cross_Compile_For_ARM seem to be a little dated. I had a go at fixing up the paths and running through it manually but I get hangs during compilations, random errors from code and missing files... Reminds one of the DLL hell you could get from windows 95....

Anyone here have a detailed procedure on their setup with FPC (or lazarus) for cross compiling to android they'd be willing to share by any chance? I'm in a state of denial about surrendering my article to the trash can because FPC is playing hard to get - as am I about publishing faulty instructions!

Frustration.... >:(

Andru
20-01-2012, 04:43 PM
For FreePascal 2.6.0 I use this script to build crosscompiler and install it into /opt/fpc:


export PPCBIN=/usr/lib/fpc/2.6.0/ppcx64
export ANDROID_BIN=$ANDROID_NDK/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/arm-linux-androideabi/bin

if [ -d ./fixes_2_6 ]; then
svn update ./fixes_2_6
else
svn co http://svn.freepascal.org/svn/fpc/branches/fixes_2_6 ./fixes_2_6
fi

svn export ./fixes_2_6 /tmp/fixes_2_6

cd /tmp/fixes_2_6

make distclean
make FPC=$PPCBIN build OS_TARGET=linux CPU_TARGET=arm OPT="-dFPC_ARMEL" CROSSBINDIR=$ANDROID_BIN
sudo make FPC=`pwd`/compiler/ppcrossarm PREFIX=/opt/fpc crossinstall OS_TARGET=linux CPU_TARGET=arm OPT="-dFPC_ARMEL" CROSSBINDIR=$ANDROID_BIN
rm -Rf /tmp/fixes_2_6

Instead of $ANDROID_NDK you should put your own path, because this variable available only in ArchLinux. Also don't forget to change ppcx64 to ppc386 if you use 32-bit system.

code_glitch
20-01-2012, 05:01 PM
Andru: Thanks a ton for that... I have to admit its not quite what I'd expected (maybe the wikis have a tendency for overcomplication?)

I'll give this a spin right as soon as my virtualbox loads up :)

code_glitch
20-01-2012, 05:04 PM
Oo ??

Just went to run that script, ran a mkdir FPC_Try2 and out of space... I woooonder...... Oh, well, script time since its simpler than the wiki approach :) Have to admit, arch seems like a very tempting OS, slim, extra variables by default...

code_glitch
20-01-2012, 05:47 PM
Hmm... Now lets see if it works; It seems theres no ppcarm so I wonder if fpc xyz.pas goes straight to arm then?

Edit:
!? WHAAA!!!??

Ran the sript through, a few error 2s but I find them quite common and nothing serious occured. Seems to have worked anyway. So I ran a 'sudo find / -name ppcrossarm' and I get /usr/lib/fpc/2.7.1/ppcrossarm spat back at me.

Does that mean all my faff was for nothing and a previous procedure had worked despite the errors? I guess its test time!

code_glitch
20-01-2012, 06:14 PM
Verdict: no luck...

running fpc -Parm -Tlinux test.pas just gives me a can't run ppcarm error code 127 :(

Andru
20-01-2012, 06:44 PM
I get /usr/lib/fpc/2.7.1/ppcrossarm spat back at me.
My script will build FreePascal 2.6.x from fixes_2_6 branch, so it should be 2.6.x version. And my script install everything to /opt/fpc, not to /usr. So I use some scripts for switching between different versions of FreePascal(this one is for switching to version from fixes_2_6 branch):


sudo ln -sf /opt/fpc/lib/fpc/2.6.1/ppcx64 /usr/bin/ppcx64
sudo ln -sf /opt/fpc/lib/fpc/2.6.1/ppcross386 /usr/bin/ppc386
sudo ln -sf /opt/fpc/lib/fpc/2.6.1/ppcrossarm /usr/bin/ppcarm
mv ~/fpc.cfg ~/.fpc.cfg


Content of mine ~/fpc.cfg:


#
# Config file generated by fpcmkcfg on 9-11-11 - 22:08:31
# Example fpc.cfg for Free Pascal Compiler
#

# ----------------------
# Defines (preprocessor)
# ----------------------

#
# nested #IFNDEF, #IFDEF, #ENDIF, #ELSE, #DEFINE, #UNDEF are allowed
#
# -d is the same as #DEFINE
# -u is the same as #UNDEF
#

#
# Some examples (for switches see below, and the -? helppages)
#
# Try compiling with the -dRELEASE or -dDEBUG on the commandline
#

# For a release compile with optimizes and strip debuginfo
#IFDEF RELEASE
-O2
-Xs
#WRITE Compiling Release Version
#ENDIF

# For a debug version compile with debuginfo and all codegeneration checks on
#IFDEF DEBUG
-glh
-Crtoi
#WRITE Compiling Debug Version
#ENDIF

# ----------------
# Parsing switches
# ----------------

# Pascal language mode
# -Mfpc free pascal dialect (default)
# -Mobjfpc switch some Delphi 2 extensions on
# -Mdelphi tries to be Delphi compatible
# -Mtp tries to be TP/BP 7.0 compatible
# -Mgpc tries to be gpc compatible
# -Mmacpas tries to be compatible to the macintosh pascal dialects
#
# Turn on Object Pascal extensions by default
#-Mobjfpc

# Assembler reader mode
# -Rdefault use default assembler
# -Ratt read AT&T style assembler
# -Rintel read Intel style assembler
#
# All assembler blocks are AT&T styled by default
#-Ratt

# Semantic checking
# -S2 same as -Mobjfpc
# -Sc supports operators like C (*=,+=,/= and -=)
# -Sa include assertion code.
# -Sd same as -Mdelphi
# -Se<x> compiler stops after the <x> errors (default is 1)
# -Sg allow LABEL and GOTO
# -Sh Use ansistrings
# -Si support C++ styled INLINE
# -SI<x> set interface style to <x>
# -SIcomCOM compatible interface (default)
# -SIcorbaCORBA compatible interface
# -Sm support macros like C (global)
# -So same as -Mtp
# -Sp same as -Mgpc
# -Ss constructor name must be init (destructor must be done)
#
# Allow goto, inline, C-operators, C-vars
-Sgic

# ---------------
# Code generation
# ---------------

# Uncomment the next line if you always want static/dynamic units by default
# (can be overruled with -CD, -CS at the commandline)
#-CS
#-CD

# Set the default heapsize to 8Mb
#-Ch8000000

# Set default codegeneration checks (iocheck, overflow, range, stack)
#-Ci
#-Co
#-Cr
#-Ct

# Optimizer switches for i386 compiler
# -Os generate smaller code
# -O1 level 1 optimizations (quick optimizations)
# -O2 level 2 optimizations (-O1 + slower optimizations)
# -O3 level 3 optimizations (same as -O2u)
# -Oa=N set alignment to N
# -OoX switch on optimalization X.
# -OoNOX switch off optimalization X.
# X is one of REGVAR UNCERTAIN STACKFRAME PEEPHOLE ASMCSE LOOPUNROLL
# -OpCPU set target processor.
# CPU is one of 386, PENTIUM, PENTIUM2, PENTIUM3, PENTIUM4, PENTIUMM


# -----------------------
# Set Filenames and Paths
# -----------------------

# Both slashes and backslashes are allowed in paths

# path to the messagefile, not necessary anymore but can be used to override
# the default language
#-Fr/opt/fpc/lib/fpc/$fpcversion/msg/errore.msg
#-Fr/opt/fpc/lib/fpc/$fpcversion/msg/errorn.msg
#-Fr/opt/fpc/lib/fpc/$fpcversion/msg/errores.msg
#-Fr/opt/fpc/lib/fpc/$fpcversion/msg/errord.msg
#-Fr/opt/fpc/lib/fpc/$fpcversion/msg/errorr.msg

# searchpath for units and other system dependent things
-Fu/opt/fpc/lib/fpc/$fpcversion/units/$FPCTARGET/
-Fu/opt/fpc/lib/fpc/$fpcversion/units/$FPCTARGET/*
-Fu/opt/fpc/lib/fpc/$fpcversion/units/$FPCTARGET/rtl

#IFDEF FPCAPACHE_1_13
-Fu/opt/fpc/lib/fpc/$fpcversion/units/$FPCTARGET/httpd13/
#ELSE
#IFDEF FPCAPACHE_2_0
-Fu/opt/fpc/lib/fpc/$fpcversion/units/$FPCTARGET/httpd20
#ELSE
-Fu/opt/fpc/lib/fpc/$fpcversion/units/$FPCTARGET/httpd22
#ENDIF
#ENDIF

# path to the gcclib
#ifdef cpui386
-Fl/usr/lib/gcc/x86_64-unknown-linux-gnu/4.6.2/32
-Fl/usr/lib32
#endif
#ifdef cpux86_64
-Fl/usr/lib/gcc/x86_64-unknown-linux-gnu/4.6.2
#endif

# searchpath for libraries
#-Fl/opt/fpc/lib/fpc/$fpcversion/lib
#-Fl/lib;/usr/lib

# searchpath for tools
-FD/opt/fpc/lib/fpc/$fpcversion/bin/$FPCTARGET

#IFNDEF CPUI386
#IFNDEF CPUAMD64
#DEFINE NEEDCROSSBINUTILS
#ENDIF
#ENDIF

#IFNDEF Linux
#DEFINE NEEDCROSSBINUTILS
#ENDIF

# binutils prefix for cross compiling
#IFDEF FPC_CROSSCOMPILING
#IFDEF NEEDCROSSBINUTILS
-XP$FPCTARGET-
#ENDIF
#ENDIF


# -------------
# Linking
# -------------

# generate always debugging information for GDB (slows down the compiling
# process)
# -gc generate checks for pointers
# -gd use dbx
# -gg use gsym
# -gh use heap trace unit (for memory leak debugging)
# -gl use line info unit to show more info for backtraces
# -gv generates programs tracable with valgrind
# -gw generate dwarf debugging info
#
# Enable debuginfo and use the line info unit by default
#-gl

# always pass an option to the linker
#-k-s

# Always strip debuginfo from the executable
-Xs


# -------------
# Miscellaneous
# -------------

# Write always a nice FPC logo ;)
-l

# Verbosity
# e : Show errors (default) d : Show debug info
# w : Show warnings u : Show unit info
# n : Show notes t : Show tried/used files
# h : Show hints m : Show defined macros
# i : Show general info p : Show compiled procedures
# l : Show linenumbers c : Show conditionals
# a : Show everything 0 : Show nothing (except errors)
# b : Show all procedure r : Rhide/GCC compatibility mode
# declarations if an error x : Executable info (Win32 only)
# occurs
#
# Display Info, Warnings, Notes and Hints
-viwn
# If you don't want so much verbosity use
#-vw


But if you install your FreePascal to /usr/lib/fpc, you should change my script too, otherwise you should use file above in your home directory for correct setting of paths for FreePascal :)

code_glitch
20-01-2012, 08:04 PM
Right. I think I get it now so I'll try another build and hope I get some luck...

chronozphere
27-01-2012, 09:01 AM
Is it really worth the effort to build 2.6 for android? I once tried building 2.7 but I also got problems (they might be unrelated though). So I went back to using the 2.5.1 build, which was specially made for android. I can't find the download link to it anymore :(

I feel that somebody should pre-compile this and make it available again :)

code_glitch
28-01-2012, 06:04 PM
chronozphere: 2.5.1 is actually the one mentioned in a lot of wikis, but like you say it seems the link has dried up in the most part... I'll see what I can delve into...