А то пишет следующее :

# make
make -C doc all
make[1]: Entering directory `/opt/install/sources/postgresql-7.4.2/doc'
gzip -d -c man.tar.gz | /usr/sbin/tar xf -
for file in man1/*.1; do \
mv $file $file.bak && \
sed -e 's/\\fR(l)/\\fR(5)/' $file.bak >$file && \
rm -f $file.bak || exit; \
done
/bin/sh ../config/mkinstalldirs man5
mkdir man5
for file in manl/*.l; do \
sed -e '/^\.TH/s/"l"/"5sql"/' \
-e 's/\\fR(l)/\\fR(5)/' \
$file >man5/`basename $file | sed 's/.l$/.5sql/'` || exit; \
done
make[1]: Leaving directory `/opt/install/sources/postgresql-7.4.2/doc'
make -C src all
make[1]: Entering directory `/opt/install/sources/postgresql-7.4.2/src'
make -C port all
make[2]: Entering directory `/opt/install/sources/postgresql-7.4.2/src/port'
gcc -O2 -fno-strict-aliasing -Wall -Wmissing-prototypes -Wmissing-declarations -I../../src/include -c -o isinf.o isinf.c
gcc -O2 -fno-strict-aliasing -Wall -Wmissing-prototypes -Wmissing-declarations -I../../src/include -c -o getopt_long.o getopt_long.c
gcc -O2 -fno-strict-aliasing -Wall -Wmissing-prototypes -Wmissing-declarations -I../../src/include -c -o qsort.o qsort.c
gcc -O2 -fno-strict-aliasing -Wall -Wmissing-prototypes -Wmissing-declarations -I../../src/include -c -o path.o path.c
gcc -O2 -fno-strict-aliasing -Wall -Wmissing-prototypes -Wmissing-declarations -I../../src/include -c -o sprompt.o sprompt.c
gcc -O2 -fno-strict-aliasing -Wall -Wmissing-prototypes -Wmissing-declarations -I../../src/include -c thread.c
ar crs libpgport.a isinf.o getopt_long.o qsort.o path.o sprompt.o thread.o
make[2]: ar: Command not found
make[2]: *** [libpgport.a] Error 127
make[2]: Leaving directory `/opt/install/sources/postgresql-7.4.2/src/port'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/opt/install/sources/postgresql-7.4.2/src'
make: *** [all] Error 2
#

Спасибо, про ar я не знал...
Аналоги binutils в соляре есть, как оказалось, лежат в /usr/ccs/bin
На www.sunfreeware.com советуют ставить гнутый вариант.
Ща скачаю, поставлю...
Может действительно поможет.