[Bug c/77464] gcc -no-pie breaks -shared

[balint at balintreczey dot hu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77464

--- Comment #6 from Balint Reczey <balint at balintreczey dot hu> ---
(In reply to Andrew Pinski from comment #5)
> (In reply to Manuel López-Ibáñez from comment #3)
> > Or at least give a clearer error that mentions -fPIC ...
> 
> Actually this is not a driver issue just a binutils issue if that. Why add
> no-pie anyways to the ldflags.

I would like to enable --enable-default-pie in gcc but I would like to default
to not using PIE in the top-level Makefile/configure of some projects.
If "gcc -shared -no-pie foo.c" does not have the same result as "gcc -shared
foo.c" this becomes practically impossible and one need to disable PIE for each
binary one-by-one patching the build system.

Also please note that reversing the parameters works and generates a shared
library as expected:
# gcc -no-pie -shared foo.c
# file a.out 
a.out: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically
linked, BuildID[sha1]=6512dec4e91253fccda6977a39099c0d4d304629, not stripped

One of those must be a valid bug. For practical reasons please consider the
first reported issue as valid.

From gcc's man page:

-no-pie
    Don't produce a position independent executable.

IMO -shared does not produce an executable, thus -no-pie should be silently
handled as a noop without an error.