dynamic linker question

dynamic linker question

Post by Kelly Yance » Sat, 19 Dec 1998 04:00:00

  When loading a shared library using dlopen(), how would one call a
function in the main executable from the shared library (if it is
possible at all). So for example, the main executable would call
dlopen() to load the shared library; the shared library's _init()
routine is called in which it calls one or more routines provided my the
main executable.
  The only way I can figure to go it is to have the shared library
export a function which the main program invokes via dlsym() and passes
it pointers to the necessary functions so that the shared library's
routines can call them later. I guess what I am hoping is that there is
a cleaner solution, though.

  Thanks in advance,


Kelly Yancey                "Bill Gates is only a white Persian cat and

                             James Bond movie" - comedian Dennis Miller


1. BUG IN DYNAMIC LINKER .."bad dynamic tag".


while compilling Mysql-3.22.32 and PHP4.0.2 under Linux 2.2.16,
libc-2.1.3-163,libelf-0.7.0-131, glib-1.2.8-57, glibdev-1.2.8-57 I'm
getting following error:
make[2]: Entering directory
rm -f libreadline.a
ar cru libreadline.a readline.o funmap.o keymaps.o vi_mode.o parens.o
rltty.o complete.o bind.o isearch.o display.o signals.o util.o kill.o
undo.o macro.o input.o callback.o terminal.o xmalloc.o history.o
histsearch.o histexpand.o histfile.o nls.o search.o shell.o tilde.o
BUG IN DYNAMIC LINKER ld.so: dynamic-link.h: 57: elf_get_dynamic_info:
Assertion `! "bad dynamic tag"' failed!
make[2]: *** [libreadline.a] Error 127

Can you point me to the right direction?
Thanks for any help

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