[ooc-compiler] dynamically linking to libgc

[Alan F. <Ala...@gr...>]

Hi,

My thanks to Michael van Acken, Tim Tuelings and Stewart Greenhill for
their response
to my question about intalling the garbage collector so that it is
dynamically linked against by
the oo2c compiler.  Here is what I had to do to get it to work on my
machine, for the benifit
of others:-)

I placed the GC directory at:  /usr/local/gc  (it no longer is a
subdirectory to oo2c)

Since I run RedHat Linux (vs. 7.1 & 7.2) I needed to edit the Makefile,
which I did as follows:

I appended the following compiler flags to CFLAGS
  -fPIC
  -DLINUX_THREADS  -D_REENTRANT
The first flag enables a dynamic library build under linux.  The second
pair of flags enable
the use of linux threads (I have a dual processor machine), see the
README.linux file.

I then built GC via
   make test
   make liblinuxgc.so
and copied the following files
   cp gc.h /usr/local/include/gc.h
   cp gc.a /usr/local/lib/gc.a
   cp libgc.so.0 /usr/local/lib/libgc.so.0
where /usr/local/lib is a line entry in my /etc/ld.so.conf file (used by
libtool).
If this directory (or the directory you copy to) is not in this file,
then edit it
and run ./sbin/ldconfig to place it in the path.

I then created the following symbolic links in the directory
/usr/local/lib
   ln -s gc.a libgc.a
   ln -s libgc.so.0 libgc.so

This completed my installation of GC.

After that, I changed to my oo2c directory and ran
   make distclean
and then reran
   ./configure
   make all
   make install
To test that the garbage collector is dynamically linked against,
execute
   ldd /usr/local/bin/oo2c
and a line like
   libgc.so.0 => /usr/local/lib/libgc.so.0 (0x40064000)
should be present.

Hope this is useful,

Al

--
Alan D. Freed, PhD         email: Ala...@gr...
Polymers Branch, MS 49-3          Fr...@bm...     (tuesdays)
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