gcc 2.95 under HP-UX11

["Grammes, Carsten" <cg at dialogika dot de>]

I installed the gcc-2.95.3 binary distribution on a HP-UX 11 machine
which previously only had the HP K&R C compiler. In detailed I
downloaded and installed

bison-1.28
flex-2.5.4a
binutils-2.11
gcc-2.95.3

all from the official HP-UX porting site. All packages (*.depot files)
installed w/o problems using the sd installer. However when trying to
use gcc e.g. to build GNU make (similar with other packages) I get
problems which refer to conflicting include files:

# make

        make  all-recursive

Making all in glob

Making all in i18n

        /usr/local/bin/gcc -DALIASPATH=\"/usr/local/share/locale:.\"
-DLOCALEDIR
=\"/usr/local/share/locale\" -DLIBDIR=\"/usr/local/lib\"
-DINCLUDEDIR=\"/usr/loc
al/include\" -DHAVE_CONFIG_H -I. -I. -I./glob  -D__STDC_EXT__  -g -O2
-c ar.c   
In file included from make.h:89,

                 from ar.c:20:

/usr/include/ctype.h:26: warning: `__va__list' redefined

/opt/gcc/lib/gcc-lib/hppa2.0n-hp-hpux11.00/2.95.3/include/stdio.h:30:
warning: t
his is the location of the previous definition

In file included from /usr/include/wchar.h:41,

                 from /usr/include/inttypes.h:509,

                 from make.h:311,

                 from ar.c:20:

/opt/gcc/lib/gcc-lib/hppa2.0n-hp-hpux11.00/2.95.3/include/stdlib.h:112:
conflict
ing types for `free'

make.h:250: previous declaration of `free'

/opt/gcc/lib/gcc-lib/hppa2.0n-hp-hpux11.00/2.95.3/include/stdlib.h:156:
conflict
ing types for `malloc'

make.h:248: previous declaration of `malloc'

/opt/gcc/lib/gcc-lib/hppa2.0n-hp-hpux11.00/2.95.3/include/stdlib.h:157:
conflict
ing types for `realloc'

*** Error exit code 1  
                       
Stop.                  
*** Error exit code 1  
                       
Stop.                  
*** Error exit code 1  
                       
Stop.                  
#                      


What do you think, what went wrong?

Thanks,
Carsten.