Error while building gmake on SUN Solaris

[Manan . Thakkar]

I am trying to build the gmake version 3.79 and getting errors.

orion:sont:DEV> uname -X
System = SunOS
Node = orion
Release = 5.6
KernelID = Generic_105181-05
Machine = sun4u
BusType = <unknown>
Serial = <unknown>
Users = <unknown>
OEM# = 0
Origin# = 1
NumCPU = 1

/usr/imports/gnu/lib/gcc-lib/sparc-sun-solaris2.5/2.7.2.2/include/sys/proc.h:213
: parse error before `p0'
/usr/imports/gnu/lib/gcc-lib/sparc-sun-solaris2.5/2.7.2.2/include/sys/proc.h:213
: warning: data definition has no type or
storage class
In file included from /usr/include/kstat.h:11,
                 from getloadavg.c:425:
/usr/include/sys/kstat.h:373: parse error before `int64_t'
/usr/include/sys/kstat.h:373: warning: no semicolon at end of struct or union
/usr/include/sys/kstat.h:373: warning: no semicolon at end of struct or union
/usr/include/sys/kstat.h:374: warning: data definition has no type or storage
class
/usr/include/sys/kstat.h:380: parse error before `ll'
/usr/include/sys/kstat.h:380: warning: data definition has no type or storage
class
/usr/include/sys/kstat.h:381: parse error before `ull'
/usr/include/sys/kstat.h:381: warning: data definition has no type or storage
class
/usr/include/sys/kstat.h:384: parse error before `}'
/usr/include/sys/kstat.h:384: warning: data definition has no type or storage
class
/usr/include/sys/kstat.h:385: parse error before `}'
/usr/include/sys/kstat.h:385: warning: data definition has no type or storage
class
getloadavg.c: In function `getloadavg':
getloadavg.c:570: `kn' undeclared (first use this function)
getloadavg.c:570: (Each undeclared identifier is reported only once
getloadavg.c:570: for each function it appears in.)
*** Error code 1
make: Fatal error: Command failed for target `getloadavg.o'
Current working directory /cm/builds/DEV/nti/tcms/sdks/make-3.79
*** Error code 1
make: Fatal error: Command failed for target `all-recursive'
Current working directory /cm/builds/DEV/nti/tcms/sdks/make-3.79
*** Error code 1
make: Fatal error: Command failed for target `all-recursive-am'

Error while tring to compile the gmake 3.79

Please provide some help with this problem

Thanks

__Manan__