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Full Discussion: C++ Linking Error: invalid DSO for symbol
Top Forums Programming C++ Linking Error: invalid DSO for symbol Post 302931012 by Corona688 on Friday 9th of January 2015 11:15:15 AM
Old 01-09-2015
Thought it might be missing something.

main() is where your program begins, if that's missing it can't create an executable. Libraries on the other hand don't need a main().

Check that the code which is supposed to define it is getting compiled, and also check that main is being exported properly. If it's being hashed into a C++ overloaded name, the linker might not find it. You could give it a definition to avoid it being name-mangled.

Code:
// Forcing main to export as _main in a C++ program
extern "C" int main(int argc, char *argv[]);

// Actual definition for main
int main(int argc, char *argv[]) {
...
}

Last edited by Corona688; 01-09-2015 at 12:24 PM..
 

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LEARN ABOUT FREEBSD

kldxref

KLDXREF(8)						    BSD System Manager's Manual 						KLDXREF(8)

NAME

     kldxref -- generate hints for the kernel loader

SYNOPSIS

     kldxref [-Rdv] [-f hintsfile] path ...

DESCRIPTION

     The kldxref utility is used to generate hint files which list modules, their version numbers, and the files that contain them.  These hints
     are used by the kernel loader to determine where to find a particular KLD module.

     A separate hint file is generated for each directory listed on the command line that contains modules.  If no hint records are generated for
     a particular directory, no hint file is created, and the preexisting hint file (if there was one in that directory) is removed.

     The following options are available:

     -R      Recurse into subdirectories.

     -d      Do not generate a hint file, but print module metadata on standard output.

     -f hintsfile
	     Specify a different name for the hints files than linker.hints.

     -v      Operate in verbose mode.

EXAMPLES

     To build hint files for both standard and add-on modules:

	   kldxref /boot/kernel /boot/modules

     To build hint files for all installed kernels:

	   kldxref -R /boot

SEE ALSO

     kld(4), kldconfig(8), kldload(8), kldstat(8), kldunload(8)

HISTORY

     The kldxref utility first appeared in FreeBSD 5.0.

AUTHORS

     The kldxref utility was implemented by Boris Popov <bp@FreeBSD.org>.  This manual page was written by Boris Popov <bp@FreeBSD.org> and
     Dag-Erling Smorgrav <des@FreeBSD.org>.

BSD
								  October 9, 2001							       BSD
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