[Bug c++/39884] New: undefined reference

["nilesh dot barange at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

hi 
I am getting following error.
Can any one knows why it is?

[clususer@vlsiserver mod_lbm1]$ g++  -o testmain testmain.cpp
/tmp/ccQqRHb8.o(.text+0x17c): In function `main':
: undefined reference to `Preprocess(int&, int&, int&, Input*, char*)'
/tmp/ccQqRHb8.o(.text+0x18d): In function `main':
: undefined reference to `DisplayInputArray(Input*, int&)'
/tmp/ccQqRHb8.o(.text+0x1d3): In function `main':
: undefined reference to `Domain::Domain(int&, int&, int&, int, double&,
double)'
/tmp/ccQqRHb8.o(.text+0x20c): In function `main':
: undefined reference to `Domain::InitializeDomain(Input*, int&)'
/tmp/ccQqRHb8.o(.text+0x215): In function `main':
: undefined reference to `Domain::DisplayDomain()'
/tmp/ccQqRHb8.o(.text+0x22d): In function `main':
: undefined reference to `Domain::SimulateDomain()'
/tmp/ccQqRHb8.o(.text+0x236): In function `main':
: undefined reference to `Domain::DisplayDomain()'
/tmp/ccQqRHb8.o(.text+0x269): In function `main':
: undefined reference to `Domain::DisplayDomain()'
collect2: ld returned 1 exit status


-- 
           Summary: undefined reference
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: nilesh dot barange at gmail dot com
 GCC build triplet: undefined reference


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39884