I am building gst-plugins-0.7.4 on SPARC/Solaris-8 using gcc-3.3.1. 
gstreamer-0.7.4 seems to be OK.  I get this error during the compilation:

 gcc -DHAVE_CONFIG_H -I. -I. -I../../.. -I/home/jjones1/usr/include
-I../../../gst-libs -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -threads
-I/home/jjones1/usr/gnome-2.4/include/gstreamer-0.7
-I/home/jjones1/usr/gnome-2.4/include/glib-2.0
-I/home/jjones1/usr/gnome-2.4/lib/glib-2.0/include
-I/home/jjones1/usr/include/libxml2 -DGST_DISABLE_DEPRECATED -Wall -O3
-pipe -mcpu=v9 -mtune=ultrasparc -I/home/jjones1/usr/gnome-2.4/include
-I/home/jjones1/usr/include -MT libgstaudiofilter_la-gstaudiofilter.lo -MD
-MP -MF .deps/libgstaudiofilter_la-gstaudiofilter.Tpo -c gstaudiofilter.c 
-fPIC -DPIC -o .libs/libgstaudiofilter_la-gstaudiofilter.o
/bin/bash ../../../libtool --mode=link gcc  -O3 -pipe -mcpu=v9
-mtune=ultrasparc -I/home/jjones1/usr/gnome-2.4/include
-I/home/jjones1/usr/include  -L/home/jjones1/usr/gnome-2.4/lib
-L/home/jjones1/usr/lib -o libgstaudiofilter.la -rpath
/home/jjones1/usr/gnome-2.4/lib/gstreamer-0.7 -module -avoid-version
libgstaudiofilter_la-gstaudiofilter.lo  
gcc -shared -Wl,-h -Wl,libgstaudiofilter.so -o .libs/libgstaudiofilter.so 
.libs/libgstaudiofilter_la-gstaudiofilter.o 
-L/home/jjones1/usr/gnome-2.4/lib -L/home/jjones1/usr/lib -lc  -mcpu=v9
-mtune=ultrasparc
creating libgstaudiofilter.la
(cd .libs && rm -f libgstaudiofilter.la && ln -s ../libgstaudiofilter.la
libgstaudiofilter.la)
./make_filter AudiofilterExample ./gstaudiofiltertemplate.c
./make_filter: syntax error at line 17: `id=$' unexpected
gmake[4]: *** [gstaudiofilterexample.c] Error 2
gmake[4]: Leaving directory
`/home/jjones1/usr/src/gnome-misc/gst-plugins-0.7.4/gst-libs/gst/audio'
gmake[3]: *** [all-recursive] Error 1
gmake[3]: Leaving directory
`/home/jjones1/usr/src/gnome-misc/gst-plugins-0.7.4/gst-libs/gst'
gmake[2]: *** [all-recursive] Error 1
gmake[2]: Leaving directory
`/home/jjones1/usr/src/gnome-misc/gst-plugins-0.7.4/gst-libs'
gmake[1]: *** [all-recursive] Error 1
gmake[1]: Leaving directory
`/home/jjones1/usr/src/gnome-misc/gst-plugins-0.7.4'
gmake: *** [all] Error 2