libstdc++

[Jon Cast <jcast at ou dot edu>]

To Whom It May Concern:
Please be patient with me, this is my first experience with Free Software
customer support.
I am having trouble compiling C++ under Cygwin v. 1.1.4.  I am using
libstdc++-v3 (2.90.8).
When I attempt to link, I get undefined symbols inside libstdc++.  I believe
these symbols are defined by libio.
The exact symbols are:

/usr/lib/libstdc++.a(c++io.o): In function `_Q23std12__basic_filePv':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:43: undefined reference to
`_IO_init'
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:44: undefined reference to
`_IO_file_init'
/usr/lib/libstdc++.a(c++io.o): In function `$_Q23std12__basic_file':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:55: undefined reference to
`_IO_do_write'
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:60: undefined reference to
`_IO_un_link'
/usr/lib/libstdc++.a(c++io.o): In function `std::__basic_file::sys_open(int,
std::_Ios_Openmode)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:98: undefined reference to
`_IO_link_in'
/usr/lib/libstdc++.a(c++io.o): In function `std::__basic_file::open(char
const *, std::_Ios_Openmode, int)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:166: undefined reference to
`_IO_link_in'
/usr/lib/libstdc++.a(c++io.o): In function `std::__basic_file::close(void)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:178: undefined reference to
`_IO_file_close_it'
/usr/lib/libstdc++.a(c++io.o): In function
`std::__basic_file::overflow(int)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:184: undefined reference to
`_IO_file_overflow'
/usr/lib/libstdc++.a(c++io.o): In function
`std::__basic_file::underflow(void)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:188: undefined reference to
`_IO_file_underflow'
/usr/lib/libstdc++.a(c++io.o): In function `std::__basic_file::uflow(void)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:192: undefined reference to
`_IO_default_uflow'
/usr/lib/libstdc++.a(c++io.o): In function
`std::__basic_file::pbackfail(int)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:197: undefined reference to
`_IO_default_pbackfail'
/usr/lib/libstdc++.a(c++io.o): In function `std::__basic_file::xsputn(char
const *, long)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:201: undefined reference to
`_IO_file_xsputn'
/usr/lib/libstdc++.a(c++io.o): In function `std::__basic_file::xsgetn(char
*, long)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:205: undefined reference to
`_IO_default_xsgetn'
/usr/lib/libstdc++.a(c++io.o): In function `std::__basic_file::seekoff(long,
std::_Ios_Seekdir, std::_Ios_Openmode)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:210: undefined reference to
`_IO_file_seekoff'
/usr/lib/libstdc++.a(c++io.o): In function `std::__basic_file::seekpos(long,
std::_Ios_Openmode)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:214: undefined reference to
`_IO_file_seekoff'
/usr/lib/libstdc++.a(c++io.o): In function `std::__basic_file::setbuf(char
*, int)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:219: undefined reference to
`_IO_file_setbuf'
/usr/lib/libstdc++.a(c++io.o): In function `std::__basic_file::sync(void)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:223: undefined reference to
`_IO_file_sync'
/usr/lib/libstdc++.a(c++io.o): In function
`std::__basic_file::doallocate(void)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:228: undefined reference to
`_IO_file_doallocate'
/usr/lib/libstdc++.a(c++io.o): In function `std::__basic_file::sys_read(char
*, long)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:233: undefined reference to
`_IO_file_read'
/usr/lib/libstdc++.a(c++io.o): In function
`std::__basic_file::sys_write(char const *, long)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:238: undefined reference to
`_IO_file_write'
/usr/lib/libstdc++.a(c++io.o): In function
`std::__basic_file::sys_seek(long, std::_Ios_Seekdir)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:243: undefined reference to
`_IO_file_seek'
/usr/lib/libstdc++.a(c++io.o): In function
`std::__basic_file::sys_close(void)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:247: undefined reference to
`_IO_file_close'
/usr/lib/libstdc++.a(c++io.o): In function `std::__basic_file::sys_stat(void
*)':
/gcc-2.95.2-2/libstdc++-2.90.8/src/c++io.cc:251: undefined reference to
`_IO_file_stat'

If I try supplying –lio to the linker, ld reports that it cannot find the
file.

Any help would be appreciated.

Jon Cast



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