diff options
Diffstat (limited to 'src/Compilation.zig')
| -rw-r--r-- | src/Compilation.zig | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/Compilation.zig b/src/Compilation.zig index 7903586450..35be4e86cf 100644 --- a/src/Compilation.zig +++ b/src/Compilation.zig @@ -1016,6 +1016,9 @@ pub const InitOptions = struct { /// (Darwin) remove dylibs that are unreachable by the entry point or exported symbols dead_strip_dylibs: bool = false, libcxx_abi_version: libcxx.AbiVersion = libcxx.AbiVersion.default, + /// (Windows) PDB source path prefix to instruct the linker how to resolve relative + /// paths when consolidating CodeView streams into a single PDB file. + pdb_source_path: ?[]const u8 = null, }; fn addPackageTableToCacheHash( @@ -1719,6 +1722,27 @@ pub fn create(gpa: Allocator, options: InitOptions) !*Compilation { }; }; + const pdb_source_path: ?[]const u8 = options.pdb_source_path orelse blk: { + if (builtin.target.os.tag == .windows) { + // PDB requires all file paths to be fully resolved, and it is really the + // linker's responsibility to canonicalize any path extracted from the CodeView + // in the object file. However, LLD-link has some very questionable defaults, and + // in particular, it purposely bakes in path separator of the host system it was + // built on rather than the targets, or just throw an error. Thankfully, they have + // left a backdoor we can use via -PDBSOURCEPATH. + const mod = module orelse break :blk null; + var buffer: [std.fs.MAX_PATH_BYTES]u8 = undefined; + const resolved_path = if (mod.main_pkg.root_src_directory.path) |base_path| p: { + if (std.fs.path.isAbsolute(base_path)) break :blk base_path; + const resolved_path = std.os.realpath(base_path, &buffer) catch break :blk null; + const pos = std.mem.lastIndexOfLinear(u8, resolved_path, base_path) orelse resolved_path.len; + break :p resolved_path[0..pos]; + } else std.os.realpath(".", &buffer) catch break :blk null; + break :blk try arena.dupe(u8, resolved_path); + } + break :blk null; + }; + const implib_emit: ?link.Emit = blk: { const emit_implib = options.emit_implib orelse break :blk null; @@ -1865,6 +1889,7 @@ pub fn create(gpa: Allocator, options: InitOptions) !*Compilation { .headerpad_max_install_names = options.headerpad_max_install_names, .dead_strip_dylibs = options.dead_strip_dylibs, .force_undefined_symbols = .{}, + .pdb_source_path = pdb_source_path, }); errdefer bin_file.destroy(); comp.* = .{ |