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closes #2024
there's a new cli option `--main-pkg-path` which you can use to choose
a different root package directory besides the one inferred from the
root source file
and a corresponding build.zig API:
foo.setMainPkgPath(path)
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* CLI: `-target [name]` instead of `--target-*` args.
This matches clang's API.
* `builtin.Environ` renamed to `builtin.Abi`
- likewise `builtin.environ` renamed to `builtin.abi`
* stop hiding the concept of sub-arch. closes #1526
* `zig targets` only shows available targets. closes #438
* include all targets in readme, even those that don't
print with `zig targets` but note they are Tier 4
* refactor target.cpp and make the naming conventions
more consistent
* introduce the concept of a "default C ABI" for a given
OS/Arch combo. As a rule of thumb, if the system compiler
is clang or gcc then the default C ABI is the gnu ABI.
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closes #2011
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* better libc detection
This introduces a new command `zig libc` which prints
the various paths of libc files. It outputs them to stdout
in a simple text file format that it is capable of parsing.
You can use `zig libc libc.txt` to validate a file.
These arguments are gone:
--libc-lib-dir [path] directory where libc crt1.o resides
--libc-static-lib-dir [path] directory where libc crtbegin.o resides
--msvc-lib-dir [path] (windows) directory where vcruntime.lib resides
--kernel32-lib-dir [path] (windows) directory where kernel32.lib resides
Instead we have this argument:
--libc [file] Provide a file which specifies libc paths
This is used to pass a libc text file (which can be generated with
`zig libc`). So it is easier to manage multiple cross compilation
environments.
`--cache on` now works when linking against libc.
`ZigTarget` now has a bool field `is_native`
Better error messaging when you try to link against libc or use
`@cImport` but the various paths cannot be found. It should also be
faster.
* save native_libc.txt in zig-cache
This avoids having to detect libc at runtime on every invocation.
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with this change, when you assign undefined, zig emits a few
assembly instructions to tell valgrind that the memory is undefined
it's on by default for debug builds, and disabled otherwise. only
support for linux, darwin, solaris, mingw on x86_64 is currently
implemented.
--disable-valgrind turns it off even in debug mode.
--enable-valgrind turns it on even in release modes.
It's always disabled for compiler_rt.a and builtin.a.
Adds `@import("builtin").valgrind_support` which lets code know
at comptime whether valgrind client requests are enabled.
See #1989
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See #896
Zig 0.3.0+ and Valgrind 3.14+ do not need the workaround.
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* also fix extern variables with initialiaztion values to generate runtime code
* remove the workaround in example/shared_library/mathtest.zig
* introduce the ability for global variables to have Weak and LinkOnce
linkage
* fix `@export` to work for non-functions. this code needs to be
audited though.
* fix comptime ptrcast not keeping bigger alignment
* fix linker warnings when targeting darwin
closes #1903
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Mostly picking the same paths as FreeBSD.
We need a little special handling for crt files, as netbsd uses its
own (and not GCC's) for those, with slightly different names.
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this should actually improve CI times a bit too
See the description at the top of std/os/startup.zig (deleted in this
commit) for a more detailed understanding of what this commit does.
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* add a --system-linker-hack command line parameter to work around
poor LLD macho code. See #1535
* build.zig correctly handles static as well as dynamic dependencies
when building the self hosted compiler.
- no more unnecessary libxml2 dependency
- a static build on macos produces a completely static self-hosted
compiler for macos (except for libSystem as intended).
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Closes #553.
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...whether they will be linked with libc
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* introduce --disable-pic option which can generally be allowed to be
the default. compiler_rt.a and builtin.a get this option when you
build a static executable.
* compiler_rt and builtin libraries are not built for build-lib
--static
* posix_spawn instead of fork/execv
* disable the error limit on LLD. Fixes the blank lines printed
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closes #1493
closes #54
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Pass --no-entry instead of --relocatable to lld. Both stop a reference
to the _start() entry point from being emitted but --relocatable also
prevents public symbols from being exported when creating an executable.
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fixes test failures
See #157
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* build: only do codegen_link when emitting an actual binary. Fixes #1371
* build: only output C header file when explicitely asked to
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...zig run, zig build, compiler_rt.a, and builtin.a
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* add almost all the input parameter state to the hash
- missing items are the detected MSVC installation on Windows
and detected libc installation on POSIX
- also missing are C files and .h files that libclang finds
* artifacts are created in global cache directory instead of
zig-cache.
- exception: builtin.zig is still in zig-cache
* zig run uses the new cache correctly
* zig run uses execv on posix systems
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See #1416
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sometimes libgcc is missing things we need, so we always link
compiler_rt and rely on weak linkage to allow libgcc to override.
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this is going to only work for very basic libraries;
I plan to slowly add more features over time to support more
complicated libraries
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Add wasm32 support to the build-obj, build-exe and build-lib commands
of the stage 1 compiler. Wasm64 should work transparently once it's
supported in upstream LLVM.
To export a function:
// lib.zig - for exposition, not necessary for this example
pub use @import("add.zig");
// add.zig
export fn add(a: i32, b: i32) i32 {
return a + b;
}
To import a function:
// cube.zig
extern fn square(x: i32) i32;
export fn cube(x: i32) i32 {
return x * square(x);
}
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this provides a workaround for #896
until valgrind adds support for clang/LLD
(equivalent to gcc/gold -rosegment)
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this removes the following configure options:
* ZIG_LIBC_LIB_DIR
* ZIG_LIBC_STATIC_LIB_DIR
* ZIG_LIBC_INCLUDE_DIR
* ZIG_DYNAMIC_LINKER
* ZIG_EACH_LIB_RPATH
* zig's reliance on CMAKE_INSTALL_PREFIX
these options are still available as command line options, however,
the default will attempt to execute the system's C compiler to
collect system defaults for these values.
closes #870
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