breaking changes to zig build API and improved caching

 * in Zig build scripts, getOutputPath() is no longer a valid function
   to call, unless setOutputDir() was used, or within a custom make()
   function. Instead there is more convenient API to use which takes
   advantage of the caching system. Search this commit diff for
   `exe.run()` for an example.
 * Zig build by default enables caching. All build artifacts will go
   into zig-cache. If you want to access build artifacts in a convenient
   location, it is recommended to add an `install` step. Otherwise
   you can use the `run()` API mentioned above to execute programs
   directly from their location in the cache. Closes #330.
   `addSystemCommand` is available for programs not built with Zig
   build.
 * Please note that Zig does no cache evicting yet. You may have to
   manually delete zig-cache directories periodically to keep disk
   usage down. It's planned for this to be a simple Least Recently
   Used eviction system eventually.
 * `--output`, `--output-lib`, and `--output-h` are removed. Instead,
   use `--output-dir` which defaults to the current working directory.
   Or take advantage of `--cache on`, which will print the main output
   path to stdout, and the other artifacts will be in the same directory
   with predictable file names. `--disable-gen-h` is available when
   one wants to prevent .h file generation.
 * `@cImport` is always independently cached now. Closes #2015.
   It always writes the generated Zig code to disk which makes debug
   info and compile errors better. No more "TODO: remember C source
   location to display here"
 * Fix .d file parsing. (Fixes the MacOS CI failure)
 * Zig no longer creates "temporary files" other than inside a
   zig-cache directory.

This breaks the CLI API that Godbolt uses. The suggested new invocation
can be found in this commit diff, in the changes to `test/cli.zig`.

1 files changed, 3 insertions, 2 deletions

diff --git a/src/analyze.hpp b/src/analyze.hpp
index aa94f0c2c5..22e44ebd3f 100644
--- a/src/analyze.hpp
+++ b/src/analyze.hpp
@@ -31,8 +31,6 @@ ZigType *get_array_type(CodeGen *g, ZigType *child_type, uint64_t array_size);
 ZigType *get_slice_type(CodeGen *g, ZigType *ptr_type);
 ZigType *get_partial_container_type(CodeGen *g, Scope *scope, ContainerKind kind,
         AstNode *decl_node, const char *full_name, Buf *bare_name, ContainerLayout layout);
-ZigType *get_root_container_type(CodeGen *g, const char *full_name, Buf *bare_name,
-        RootStruct *root_struct);
 ZigType *get_smallest_unsigned_int_type(CodeGen *g, uint64_t x);
 ZigType *get_error_union_type(CodeGen *g, ZigType *err_set_type, ZigType *payload_type);
 ZigType *get_bound_fn_type(CodeGen *g, ZigFn *fn_entry);
@@ -53,6 +51,7 @@ enum SourceKind {
     SourceKindRoot,
     SourceKindPkgMain,
     SourceKindNonRoot,
+    SourceKindCImport,
 };
 ZigType *add_source_file(CodeGen *g, ZigPackage *package, Buf *abs_full_path, Buf *source_code,
         SourceKind source_kind);
@@ -242,4 +241,6 @@ Error ensure_const_val_repr(IrAnalyze *ira, CodeGen *codegen, AstNode *source_no
 void typecheck_panic_fn(CodeGen *g, TldFn *tld_fn, ZigFn *panic_fn);
 Buf *type_bare_name(ZigType *t);
 Buf *type_h_name(ZigType *t);
+Error create_c_object_cache(CodeGen *g, CacheHash **out_cache_hash, bool verbose);
+
 #endif