I have some problems getting disko to work for my ARM board.
Here is my setup:
Host OS: Debian Lenny
Cross Compiler: CodeSourcery arm-none-linux-gnueabi
Target Board: Mini2440 (http://www.friendlyarm.net/products/mini2440)
Disko: actual git repository
I successfully cross compiled all required libraries (alsalib, openssl, ...)
I was also able to cross compile the disko framework.
Here's how I build the disko framework:
| Code: |
scons prefix=/home/user/disko/build debug=true messages=true cross=true graphics=fbdev
scons install
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But now I'm getting errors when trying to build the tutorial applications 01 - 04.
Below is the output when I run 'make' for firststeps application 01.
| Code: |
user@debian:~/disko/disko-tutorials/firststeps$ make
check for disko version >= 1.1.1
make -C 01 all
check for disko version >= 1.1.1
make[1]: Entering directory `/home/user/disko/disko-tutorials/firststeps/01'
/home/user/CodeSourcery/bin/arm-none-linux-gnueabi-g++ -g -D__ENABLE_LOG__ -O0 -g -Wall -D__ENABLE_DEBUG__ -D__HAVE_FBDEV__ -D__HAVE_MMSMEDIA__ -D__HAVE_MIXER__ -D__ENABLE_SQLITE__ -D__HAVE_MMSCRYPT__ -I/home/user/disko/build/include/disko/ -I/home/user/curl/build/include -I/home/user/zlib/build/include -I/home/user/sqlite/build/include -I/home/user/openssl/build/include -I/home/user/libsigc++/build/include/sigc++-2.0 -I/home/user/libsigc++/build/lib/sigc++-2.0/include -I/home/user/libxml2/build/include/libxml2 -I/home/user/libpng/build/include/libpng12 -I/home/user/freetype/build/include/freetype2 -I/home/user/freetype/build/include -I/home/user/alsalib/build/include -I/home/user/alsalib/build/include/alsa main.cpp -L/home/user/disko/build/lib/disko -L/home/user/libsigc++/build/lib -L/home/user/curl/build/lib -L/home/user/zlib/build/lib -L/home/user/libxml2/build/lib -L/home/user/libpng/build/lib -L/home/user/freetype/build/lib -L/home/user/alsalib/build/lib -L/home/user/sqlite/build/lib -L/home/user/openssl/build/lib -lmmsinfo -lmmsconfig -lmmstools -lmmsgui -lmmsinput -lmmsbase -lmmscore -lmmsmedia -lxml2 -lcurl -lsigc-2.0 -lpng12 -lfreetype -lasound -lssl -lcrypto -ldl -lsqlite3 -Wl,-rpath=/home/user/disko/build/lib/disko -Wl,-rpath=/home/user/libsigc++/build/lib -Wl,-rpath=/home/user/curl/build/lib -Wl,-rpath=/home/user/zlib/build/lib -Wl,-rpath=/home/user/libxml2/build/lib -Wl,-rpath=/home/user/libpng/build/lib -Wl,-rpath=/home/user/freetype/build/lib -Wl,-rpath=/home/user/alsalib/build/lib -Wl,-rpath=/home/user/sqlite/build/lib -Wl,-rpath=/home/user/openssl/build/lib -o 01
/home/user/CodeSourcery/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.3/../../../../arm-none-linux-gnueabi/bin/ld: 01: hidden symbol `__dso_handle' in /home/user/CodeSourcery/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.3/crtbegin.o is referenced by DSO
/home/user/CodeSourcery/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.3/../../../../arm-none-linux-gnueabi/bin/ld: final link failed: Nonrepresentable section on output
collect2: ld returned 1 exit status
make[1]: *** [all] Error 1
make[1]: Leaving directory `/home/user/disko/disko-tutorials/firststeps/01'
make: *** [all] Error 2
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It seems to be a problem with __dso_handle.
I googled for a solution and also checked the forum but I can't find a solution.
My suggestion is that building the shared libs of the disko framework is incorrect for my cross-compiling environment.
Doing
| Code: |
file /home/user/disko/build/lib/disko/libmmsbase.so
|
results in
| Code: |
/home/user/disko/build/lib/disko/libmmsbase.so: ELF 32-bit LSB shared object, ARM, version 1 (SYSV), dynamically linked, not stripped
|
This seems to be ok for me.
Doing
| Code: |
/home/user/CodeSourcery/bin/arm-none-linux-gnueabi-nm /home/user/disko/build/lib/disko/libmmsbase.so | grep __dso_handle
|
results in
-> __dso_handle of all disko libs are external references.
For all other cross-compiled libraries the same 'nm' command results in local definitions for __dso_handle (e.g.
| Code: |
000c573c d __dso_handle
|
for libasound.so)
Could this be the problem that linking fails? If yes, what can I do to tell disko to a local definition of __dso_handle. I found hints in google that building shared libraries should be done with
'gplusplus' (sorry, I'm unable to write correct positive signs in this forum
) instead of
ld (
http://rachid.koucha.free.fr/tech_corner/shared_libs_tests.html). How is disko built?
Any help would be greatly appreciated.
Btw: Please replace 'gplusplus' with $(CXX) in the git tree (
git://diskohq.org/disko-tutorials.git) in all Makefiles of the firststeps tutorial applications 01-04. This was already done by 'mah' for the flash tutorial.
