[Bug ld/12768] New: Improve the error message for linking failure

[qiaomuf at gentoo dot org]

http://sourceware.org/bugzilla/show_bug.cgi?id=12768

           Summary: Improve the error message for linking failure
           Product: binutils
           Version: 2.20
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ld
        AssignedTo: address@hidden
        ReportedBy: address@hidden


I'm building a C++ shared library project. When I add "--coverage" to CXXFLAGS,
the project fails to compile because libtool uses --nostdlib. The error message
is not that helpful:

/usr/lib/gcc/x86_64-pc-linux-gnu/4.5.2/../../../../x86_64-pc-linux-gnu/bin/ld:
.libs/variable_printer: hidden symbol `atexit' in
/usr/lib64/libc_nonshared.a(atexit.oS) is referenced by DSO
/usr/lib/gcc/x86_64-pc-linux-gnu/4.5.2/../../../../x86_64-pc-linux-gnu/bin/ld:
final link failed: Nonrepresentable section on output
collect2: ld returned 1 exit status
make[1]: *** [variable_printer] Error 1

The message doesn't tell where the hidden symbol is referenced from. I need to
run readelf to figure what's going on. I wonder if the error output could be
improved to show the information.

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