Compiling procmail with gcc-lib 2.7.2.1/Sun 5.5.1

    For the first time I have to install procmail to Sun machine.
    Does anyone have a clue what should I check. I've disabled all
    other locking methods but .lock in the config.h. I have't touched
    the default LDFLAGS yet.

    I assume I'm missing some -D flag that sets up the includation of
    header files correctly in Sun (I would know HP better) I tried adding

        _INCLUDE_POSIX_SOURCE

    to the 

        CFLAGS0 = -O -D_INCLUDE_POSIX_SOURCE #$(GCC_WARNINGS) 

    But it gave the same error.

    jari

aalto:~/ftp/bin/procmail-3.11pre7 >uname -a 
SunOS aalto 5.5.1 Generic sun4m sparc SUNW,SPARCstation-10 

aalto:~/ftp/bin/procmail-3.11pre7 >gcc -v 
Reading specs from /opt/GCC2721/lib/gcc-lib/sparc-sun-solaris2.5/2.7.2.1/specs 
gcc version 2.7.2.1 


make[2]: Entering directory `/home/guru/jaalto/ftp/bin/procmail-3.11pre7/src' 
cc -c -O   _autotst.c 
In file included from _autotst.c:2: 
../config.h:22: parse error before string constant 
In file included from /opt/GCC2721/lib/gcc-lib/sparc-sun-solaris2.5/2.7.2.1/inc\
lude/sys/types.h:19, 
                 from _autotst.c:3: 
/usr/include/sys/machtypes.h:28: warning: data definition has no type or storag\
e class 
make[2]: *** [_autotst.o] Error 1 
make[2]: Leaving directory `/home/guru/jaalto/ftp/bin/procmail-3.11pre7/src' 
******************************************************* 
I suggest you take a look at the definition of LDFLAGS* 
in the Makefile before you try make again. 
make[1]: *** [../autoconf.h] Error 1 
make[1]: Leaving directory `/home/guru/jaalto/ftp/bin/procmail-3.11pre7/src' 
make: *** [autoconf.h] Error 2