This commit addresses comments suggesting a cleaner approach
at converting an `extern` struct to its byte representation using
`mem.asBytes`, and to use `meta.eql` in place of more fragile
`mem.eql(u8, ...)` for comparison of two `extern` structs.
Thanks LemonBoy!
* it is now -fcompiler-rt and -fno-compiler-rt to override the (quite
reasonable) default of bundling compiler-rt only for executables and
dynamic libraries.
- the build.zig API is still called bundle_compiler_rt however it is
now an optional bool instead of a bool. leaving it as `null` means
to use the compiler default.
* renamed some internal identifiers to make the source more readable
* additionally support -fcompiler-rt when doing build-obj for ELF files
since that target already supports linking multiple objects into one.
- includes an error message when attempting this for non-ELF. in the
future this could additionally be supported with a more advanced
implementation that does not rely on the linker.
* properly populate the linker cache hash
Before this commit, the branch regressed this case:
zig build-lib foo.zig -dynamic
readelf -d libfoo.so
x000000000000000e (SONAME) Library soname: [libfoo.so]
Now it works again, but it preserves the property that using `zig cc`
has the SONAME off by default to match C compilers.
As discussed with LemonBoy, it makes more sense to have the `-soname`
an opt-in option rather than opt-out, which is especially true if
we are to align `zig cc` with `cc` to a greater degree.
* stage2: Make zig cc more verbose
Make `zig cc` print more info from Clang itself and from our own linker
invocation, this is needed for CMake to properly discover all the
include directories and library search paths.
Closes#7110
* Update `update_clang_options`
* Typo fixes
Co-authored-by: Jakub Konka <kubkon@jakubkonka.com>
