This is gentoo specific I believe, installing libffi in Ubuntu with

        apt-get libffi4-dev

gives me

([EMAIL PROTECTED]:~)$ ls /usr/lib/libffi*
/usr/lib/libffi.a   /usr/lib/libffi.so    /usr/lib/libffi.so.4.0.1
/usr/lib/libffi.la  /usr/lib/libffi.so.4

so I guess you need to add it to your LIBRARY_PATH and possibly LD_LIBRARY_PATH :-)


Tom


Isaac wrote:
:) no, adding -lffi to the test doesn't work:

/usr/lib/gcc/powerpc-unknown-linux-gnu/3.4.4/../../../../powerpc-unknown-linux-gnu/bin/ld:
cannot find -lffi
collect2: ld returned 1 exit status

And now that the scons has been fixed up, it gives me, as expected,

Checking for ffi_call() in C library ffi... no
YHC requires LibFFI to be installed and working.

In case the information helps:  the version of libffi (it seemed like) I
installed was 3.4.3, corresponding to the GCC release of that version
number (indeed, using its source code). (Although it's very probably
irrelevant, I'm using GCC 3.4.4 as my C compiler.)

Now looking around, I found /usr/lib/libffi -- it's a directory!
$ ls -lR /usr/lib/libffi/
/usr/lib/libffi/:
total 48
-rw-r--r--  1 root root 19970 Jul  5 17:31 libffi.a
-rwxr-xr-x  1 root root   722 Jul  5 17:31 libffi.la
lrwxrwxrwx  1 root root    15 Jul  5 17:31 libffi.so -> libffi.so.3.0.0
lrwxrwxrwx  1 root root    15 Jul  5 17:31 libffi.so.3 ->libffi.so.3.0.0
-rwxr-xr-x  1 root root 18640 Jul  5 17:31 libffi.so.3.0.0
drwxr-xr-x  2 root root  4096 Jul  5 17:31 nof

/usr/lib/libffi/nof:
total 52
-rw-r--r--  1 root root 21386 Jul  5 17:31 libffi.a
-rwxr-xr-x  1 root root   726 Jul  5 17:31 libffi.la
lrwxrwxrwx  1 root root    15 Jul  5 17:31 libffi.so -> libffi.so.3.0.0
lrwxrwxrwx  1 root root    15 Jul  5 17:31 libffi.so.3 ->libffi.so.3.0.0
-rwxr-xr-x  1 root root 21104 Jul  5 17:31 libffi.so.3.0.0

[a couple spaces deleted to keep the lines from wrapping]

I don't know how much of this setup is Gentoo-specific, though, and I
don't know how libffi would generically be installed (e.g. starting from
the source tarball) in general.


Thomas Shackell wrote:

Isaac wrote:
Yes, I can compile that program "test.c" with gcc -c test.c
Just to test, without darcs-pulling anything, I re-ran scons on yhc, and
it worked to a greater extent than before (then erroring with:
/usr/lib/gcc/powerpc-unknown-linux-gnu/3.4.4/../../../../powerpc-unknown-linux-gnu/bin/ld:

cannot find -lffi
)
There must have been something temporary affecting that (my computer was
rebooted in between).
does gcc test.c -lffi work? :-)

After darcs pull, scons errored:
<snip scons error>

sorry my fault, forgot to add a file to the repo when I made a change.

thanks :-)


Tom


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