gcc -Wall -W -fPIC -shared -o library.so test.c -lc -Wl,-e,my_main
This is a workable approach, but my_main must act as the entry
point of
the program. The entry point is not called with argc and argv.
Take a
look at crt1.o on your system to see what the entry point must do.
Or look at http://git.infradead.org/users/segher/profall.git .
[ This thing runs its first command line arg, but LD_PRELOADs itself to
it (and anything it forks). It makes each of those exacutables write
gmon.out files, whether they were linked with -pg or not. ]
Segher
