Re: [ECOS] Ecos-Multiple definition of read error

[Jonathan Larmour <jlarmour at redhat dot com>]

> Zaheerabbas Shaukatali Contractor wrote:
> 
> Hello,
> 
> We have got latest ecos from CVS and added NET and common
> NET_ETH_DRIVERS.
> Build the ecos successfully.
> In our application, we are writing socket-based server. In this we are
> using
> read and write calls to communicate through socket.
> However we are getting compilation error for our application as follows:
> 
> /home/zaheer/ecosbuild/build/install/lib/libtarget.a(io_fileio_io.o): In
> function `isatty':
> me/zaheer/ecosbuild/build/install/lib/libtarget.a(io_fileio_io.o): In
> function `isatty':
> /home/zaheer/ecosbuild/ecos/packages/io/fileio/current/src/io.cxx:414:
> multiple definition of `read'
> /home/zaheer/ecosbuild/build/install/lib/libtarget.a(net_tcpip_read.o):/home/zaheer/ecosbuild/ecos/packages/net/tcpip/current/src/lib/read.c:65:
> first defined here
> /usr/bin/ld: Warning: size of symbol `read' changed from 74 to 29 in
> io_fileio_io.o
> /home/zaheer/ecosbuild/build/install/lib/libtarget.a(io_fileio_io.o): In
> function `isatty':
> /home/zaheer/ecosbuild/ecos/packages/io/fileio/current/src/io.cxx:414:
> multiple definition of `write'
> /home/zaheer/ecosbuild/build/install/lib/libtarget.a(net_tcpip_write.o):/home/zaheer/ecosbuild/ecos/packages/net/tcpip/current/src/lib/write.c:65:
> first defined here
> 
> Please let us know what could be the problem.

This could happen if you are using an old version of the net stack sources
which doesn't conditionally build lib/read.c in CYGPKG_NET_API_LOCAL. Look
at the configury for that option. Also do an "ecosconfig check".

Jifl
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