[GAP Forum] GAP 3.4.4 on modern linux

[R Borgo]

Dear all,

I apologize for bothering about GAP 3 but I am forced to use it since I 
need the
CHEVIE package, so I hope that maybe somebody out there found himself in 
my same situation
and tried to install GAP 3 on modern Linux.
I have followed the installation instruction given on the GAP3 website 
but when I try to compile
make ibm-i386-linux-gcc2

I receive the following message:
make[1]: Entering directory `/usr/not-backed-up/GAP/gap3/zoo/gap3r4p4/src'
gcc -DSYS_HAS_IOCTL_PROTO -DSYS_IS_USG -DSYS_HAS_TIME_PROTO 
-DSYS_HAS_SIG_T=void -DSYS_HAS_IOCTL_PROTO -c -o system.o system.c
system.c: In function ‘syAnswerCont’:
system.c:1608: warning: ‘return’ with a value, in function returning void
system.c: In function ‘syAnswerTstp’:
system.c:1619: warning: ‘return’ with a value, in function returning void
system.c: In function ‘syAnswerIntr’:
system.c:2738: warning: ‘return’ with a value, in function returning void
In file included from /usr/include/asm/param.h:4,
from /usr/include/linux/param.h:4,
from /usr/include/sys/param.h:24,
from system.c:3297:
/usr/include/unistd.h: At top level:
/usr/include/unistd.h:325: error: conflicting types for ‘read’
system.c:1593: error: previous declaration of ‘read’ was here
/usr/include/unistd.h:331: error: conflicting types for ‘write’
system.c:1594: error: previous declaration of ‘write’ was here
system.c:4424: error: conflicting types for ‘sbrk’
/usr/include/unistd.h:993: error: previous declaration of ‘sbrk’ was here
make[1]: *** [system.o] Error 1
make[1]: Leaving directory `/usr/not-backed-up/GAP/gap3/zoo/gap3r4p4/src'
make: *** [ibm-i386-linux-gcc2] Error 2

I tried with the COPTS="-DSYS_HAS_IOCTL_PROTO" option
and adding the option directly into the makefile with no result.
My machine has Linux Fedora.
Any suggestion?

Thank you in advance for your help

RB