passthrough mode does not mean always exit - it just means to pass
through stdio and exit if the child process exits, without doing any
special error reporting.
The code is a bit fragile so it was causing CI failures on x86_64-macos.
Also the patch up code is only needed for aarch64-macos, so we were
doing unnecessary work.
This then allows for proper resolution of names via runpath search
path list, i.e., `-rpath @loader_path` will correctly resolve
to `@rpath/libxxx.dylib (...)` in the linked binary.
This commit version-gates appending `-syslibroot` flag to lld. This
is predicated upon the fact that for versions of macOS lower than
11, lld would fail to find and link against frameworks with this
flag specified.
Co-authored-by: Andrew Kelley <andrew@ziglang.org>
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.
