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This is one of the final remaining TODOs for the LLVM backend.
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* make the setting in the linker backend be non-optional; by this time
all defaults are supposed to be resolved.
* integrate with `zig cc`
* change the CLI parsing to match C compiler parsing, allowing
`--compress-debug-sections` alone to choose a default encoding of
zlib.
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Clang accepts `-weak-lx`, `-weak_library x` and `-weak_framework x`.
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* rename `entry` to `entry_symbol_name` for the zig build API
* integrate with `zig cc` command line options
* integrate with COFF linking with LLD
* integrate with self-hosted ELF linker
* don't put it in the hash for MachO since it is ignored
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Prior to this change, even if the use specified the sysroot on the
compiler line like so
```
zig cc --sysroot=/path/to/sdk
```
it would only be used as a prefix to include paths and not as a prefix
for `zig ld` linker.
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closes #9196
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Closes #6290
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Also update to latest LLVM 13 command line options.
See #6290
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closes #6425
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This is a bug fix.
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* stage1 backend allows configuring the uwtables function attr
via a flag rather than its own logic.
* stage2 defaults to enabling uwtable attr when
linking libunwind, or always on windows
* stage2 makes link_eh_frame_hdr true automatically if uwtable
attr is set to be on for zig functions
* CLI: add -funwind-tables and -fno-unwind-tables to allow the user to
override the defaults.
* hook it up to `zig cc`
closes #9046
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Signed-off-by: Takeshi Yoneda <takeshi@tetrate.io>
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fix drivers: zig {cc,c++}
- `-dynamiclib` is an alias to `-shared`
- associate `-dynamiclib` with zig `.shared` semantics
fix drivers: zig {cc,c++,build-lib,build-exe}
- use `-dynamic` for {exe,dylib}
- for dylib this fixes a regression
- for exe this replaces incorrect use of `-static`
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Syncing with master branch because I want to re-run
update_clang_options.zig in the llvm12 branch.
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Clang docs say:
> Like -MMD, but also implies -E and writes to stdout by default.
Previously, Zig handled this option by forwarding it directly to Clang,
and disabling depfiles. However this did not adhere to Clang's documented
behavior of these flags.
Now, in addition to being forwarded directly to Clang, `-MM` also
sets c_out_mode = .preprocessor, just like `-E`.
Another issue I noticed is that Zig did not recognize the aliases for
-MG, -MM, or -MMD. The aliases are now recognized.
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Conflicts:
* src/clang.zig
* src/llvm.zig
- this file got moved to src/llvm/bindings.zig in master branch so I
had to put the new LLVM arch/os enum tags into it.
* lib/std/target.zig, src/stage1/target.cpp
- haiku had an inconsistency with its default target ABI, gnu vs
eabi. In this commit we make it gnu in both places to match the
latest changes by @hoanga.
* src/translate_c.zig
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The CLI gains -flto and -fno-lto options to override the default.
However, the cool thing about this is that the defaults are great! In
general when you use build-exe in release mode, Zig will enable LTO if
it would work and it would help.
zig cc supports detecting and honoring the -flto and -fno-lto flags as
well. The linkWithLld functions are improved to all be the same with
regards to copying the artifact instead of trying to pass single objects
through LLD with -r. There is possibly a future improvement here as
well; see the respective TODOs.
stage1 is updated to support outputting LLVM bitcode instead of machine
code when lto is enabled. This allows LLVM to optimize across the Zig and
C/C++ code boundary.
closes #2845
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* CLI: change to -mred-zone and -mno-red-zone to match gcc/clang.
* build.zig: remove the double negative and make it an optional bool.
This follows precedent from other flags, allowing the compiler CLI to
be the decider of what is default instead of duplicating the default
value into the build system code.
* Compilation: make it an optional `want_red_zone` instead of a
`no_red_zone` bool. The default is decided by a call to
`target_util.hasRedZone`.
* When creating a Clang command line, put -mred-zone on the command
line if we are forcing it to be enabled.
* Update update_clang_options.zig with respect to the recent {s}/{} format changes.
* `zig cc` integration with red zone preference.
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llvm commit b2851aea80e5a8f0cfd6c3c5a56a6b00fb28c6b6
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This is the part of #3960 that has to be rewritten to apply to latest
master branch code.
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* 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>
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Conflicts:
src/clang.zig
Master branch renamed an enum; this branch gave it an explicit tag type
and explicitly initialized values. This commit combines the changes
together.
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Closes #6091
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The changes to install_files.h needed to put into src/libcxx.zig
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This cleans up how the CLI parses and handles -E, -S, and -c.
Compilation explicitly acknowledges when it is being used to do C
preprocessing.
-S is properly translated to -fno-emit-bin -femit-asm but Compilation
does not yet handle -femit-asm.
There is not yet a mechanism for skipping the linking step when there is
only a single object file, and so to make this work we have to do a file
copy in link.flush() to copy the file from zig-cache into the output
directory.
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