In the ALSA plugin I get the following error with gcc 2.95:

gcc -DHAVE_CONFIG_H -I. -I. -I../.. -I../../gst-libs -D_LARGEFILE_SOURCE
-D_FILE_OFFSET_BITS=64 -pthread -I/opt/gnome2/include/gstreamer-0.8
-I/opt/gnome2/include/glib-2.0 -I/opt/gnome2/lib/glib-2.0/include
-I/usr/include/libxml2 -DGST_DISABLE_DEPRECATED -Wall -I/usr/include/alsa -O2
-march=i686 -c gstalsaplugin.c  -fPIC -DPIC -o .libs/libgstalsa_la-gstalsaplugin.o
In file included from /opt/gnome2/include/gstreamer-0.8/gst/gst.h:43,
                 from gstalsa.h:31,
                 from gstalsamixer.h:22,
                 from gstalsasink.h:25,
                 from gstalsaplugin.c:26:
/opt/gnome2/include/gstreamer-0.8/gst/gstinfo.h:601: warning: ignoring pragma:
gst_debug_log
/opt/gnome2/include/gstreamer-0.8/gst/gstinfo.h:602: warning: ignoring pragma:
gst_debug_log_valist
/opt/gnome2/include/gstreamer-0.8/gst/gstinfo.h:603: warning: ignoring pragma:
_gst_debug_category_new
In file included from /opt/gnome2/include/gstreamer-0.8/gst/gst.h:56,
                 from gstalsa.h:31,
                 from gstalsamixer.h:22,
                 from gstalsasink.h:25,
                 from gstalsaplugin.c:26:
/opt/gnome2/include/gstreamer-0.8/gst/gsttrace.h:136: warning: ignoring pragma:
gst_trace_new
/opt/gnome2/include/gstreamer-0.8/gst/gsttrace.h:137: warning: ignoring pragma:
gst_trace_destroy
/opt/gnome2/include/gstreamer-0.8/gst/gsttrace.h:138: warning: ignoring pragma:
gst_trace_flush
/opt/gnome2/include/gstreamer-0.8/gst/gsttrace.h:139: warning: ignoring pragma:
gst_trace_text_flush
/opt/gnome2/include/gstreamer-0.8/gst/gsttrace.h:140: warning: ignoring pragma:
gst_trace_get_size
/opt/gnome2/include/gstreamer-0.8/gst/gsttrace.h:141: warning: ignoring pragma:
gst_trace_get_offset
/opt/gnome2/include/gstreamer-0.8/gst/gsttrace.h:142: warning: ignoring pragma:
gst_trace_get_remaining
/opt/gnome2/include/gstreamer-0.8/gst/gsttrace.h:143: warning: ignoring pragma:
gst_trace_set_default
/opt/gnome2/include/gstreamer-0.8/gst/gsttrace.h:144: warning: ignoring pragma:
_gst_trace_add_entry
/opt/gnome2/include/gstreamer-0.8/gst/gsttrace.h:145: warning: ignoring pragma:
gst_trace_read_tsc
/opt/gnome2/include/gstreamer-0.8/gst/gsttrace.h:146: warning: ignoring pragma:
gst_trace_add_entry
gstalsaplugin.c: In function `gst_alsa_error_wrapper':
gstalsaplugin.c:46: warning: implicit declaration of function `gst_debug_log'
gstalsaplugin.c:46: `alsa_debug' undeclared (first use in this function)
gstalsaplugin.c:46: (Each undeclared identifier is reported only once
gstalsaplugin.c:46: for each function it appears in.)
make[3]: *** [libgstalsa_la-gstalsaplugin.lo] Error 1
make[3]: Leaving directory `/usr/src/packages/BUILD/gst-plugins-0.8.2/ext/alsa'