Need help! To build geos-3.0.x lib using Sun Studio 12 compiler [conflict in file ConvexHull.cpp]

Hi there,

We are trying to build the PostGIS (1.3.5) extension to PostgreSQL (8.3) on
Solaris 10 Update 5 on an amd64 platform (Sun Fire X4100).

We are unable to build the geos (3.0.3) library on the same using Sun Studio
12 compiler. We have included the patches as mentioned in
http://trac.osgeo.org/geos/changeset/2131?format=diff&new=2131 to fix the
name space issue. However the following issue still persists :

------------------------------------------------------------------
CC: Warning: Option -Wall passed to ld, if ld is invoked, ignored otherwise
CC: Warning: Option -ansi passed to ld, if ld is invoked, ignored otherwise
CC: Warning: Option -pedantic passed to ld, if ld is invoked, ignored
otherwise
CC: Warning: Option -Wno-long-long passed to ld, if ld is invoked, ignored
otherwise
"../../source/headers/geos/platform.h", line 59: Warning: #warning "Could
not find 64bit integer definition!".
"../../source/headers/geos/geom/Coordinate.inl", line 140: Warning: Shift
count is too large.
"ConvexHull.cpp", line 122: Warning: inputPts hides
geos::algorithm::ConvexHull::inputPts.
"ConvexHull.cpp", line 161: Warning: inputPts hides
geos::algorithm::ConvexHull::inputPts.
"ConvexHull.cpp", line 210: Error: Could not find a match for
std::vector<const geos::geom::Coordinate*>::assign(__rwstd::__rb_tree<const
geos::geom::Coordinate*, const geos::geom::Coordinate*,
__rwstd::__ident<const geos::geom::Coordinate*, const
geos::geom::Coordinate*>, geos::geom::CoordinateLessThen,
std::allocator<const geos::geom::Coordinate*>>::const_iterator,
__rwstd::__rb_tree<const geos::geom::Coordinate*, const
geos::geom::Coordinate*, __rwstd::__ident<const geos::geom::Coordinate*,
const geos::geom::Coordinate*>, geos::geom::CoordinateLessThen,
std::allocator<const geos::geom::Coordinate*>>::const_iterator) needed in
geos::algorithm::ConvexHull::reduce(std::vector<const
geos::geom::Coordinate*>&).
1 Error(s) and 4 Warning(s) detected.
*** Error code 1
make: Fatal error: Command failed for target `ConvexHull.lo'
------------------------------------------------------------------

Any suggestion enabling us to build it successfully would be very helpful.

Thank you and warm regards
--Satya