| author |  Zach Cheung <zach.cheung@uber.com> 2023-03-23 17:16:39-07:00 |
| committer |  Andrew Kelley <andrew@ziglang.org> 2023-04-07 09:09:38-04:00 |
| log | 1fdea551b22726783356c5bed90bce63706b550f |
| tree | 22b8bd9b92578d7d03e38be8ece7d29662a640bf |
| parent | 086639630800fc52bd727163e85d174ec1ac1103 |
add linker -wrap flag
4 files changed, 30 insertions(+), 0 deletions(-)
src/Compilation.zig+3
| ... | ... | @@ -494,6 +494,7 @@ pub const InitOptions = struct { |
| 494 | 494 | clang_argv: []const []const u8 = &[0][]const u8{}, |
| 495 | 495 | lib_dirs: []const []const u8 = &[0][]const u8{}, |
| 496 | 496 | rpath_list: []const []const u8 = &[0][]const u8{}, |
| 497 | wrap_list: []const []const u8 = &[0][]const u8{}, | |
| 497 | 498 | c_source_files: []const CSourceFile = &[0]CSourceFile{}, |
| 498 | 499 | link_objects: []LinkObject = &[0]LinkObject{}, |
| 499 | 500 | framework_dirs: []const []const u8 = &[0][]const u8{}, |
| ... | ... | @@ -1438,6 +1439,7 @@ pub fn create(gpa: Allocator, options: InitOptions) !*Compilation { |
| 1438 | 1439 | .wasi_emulated_libs = options.wasi_emulated_libs, |
| 1439 | 1440 | .lib_dirs = options.lib_dirs, |
| 1440 | 1441 | .rpath_list = options.rpath_list, |
| 1442 | .wrap_list = options.wrap_list, | |
| 1441 | 1443 | .strip = strip, |
| 1442 | 1444 | .is_native_os = options.is_native_os, |
| 1443 | 1445 | .is_native_abi = options.is_native_abi, |
| ... | ... | @@ -2259,6 +2261,7 @@ fn addNonIncrementalStuffToCacheManifest(comp: *Compilation, man: *Cache.Manifes |
| 2259 | 2261 | man.hash.add(comp.bin_file.options.rdynamic); |
| 2260 | 2262 | man.hash.addListOfBytes(comp.bin_file.options.lib_dirs); |
| 2261 | 2263 | man.hash.addListOfBytes(comp.bin_file.options.rpath_list); |
| 2264 | man.hash.addListOfBytes(comp.bin_file.options.wrap_list); | |
| 2262 | 2265 | man.hash.add(comp.bin_file.options.each_lib_rpath); |
| 2263 | 2266 | man.hash.add(comp.bin_file.options.build_id); |
| 2264 | 2267 | man.hash.add(comp.bin_file.options.skip_linker_dependencies); |
src/link.zig+1
| ... | ... | @@ -183,6 +183,7 @@ pub const Options = struct { |
| 183 | 183 | wasi_emulated_libs: []const wasi_libc.CRTFile, |
| 184 | 184 | lib_dirs: []const []const u8, |
| 185 | 185 | rpath_list: []const []const u8, |
| 186 | wrap_list: []const []const u8, | |
| 186 | 187 | |
| 187 | 188 | /// List of symbols forced as undefined in the symbol table |
| 188 | 189 | /// thus forcing their resolution by the linker. |
src/link/Elf.zig+12
| ... | ... | @@ -1386,6 +1386,7 @@ fn linkWithLLD(self: *Elf, comp: *Compilation, prog_node: *std.Progress.Node) !v |
| 1386 | 1386 | man.hash.add(stack_size); |
| 1387 | 1387 | man.hash.add(self.base.options.build_id); |
| 1388 | 1388 | } |
| 1389 | man.hash.addListOfBytes(self.base.options.wrap_list); | |
| 1389 | 1390 | man.hash.add(self.base.options.skip_linker_dependencies); |
| 1390 | 1391 | man.hash.add(self.base.options.z_nodelete); |
| 1391 | 1392 | man.hash.add(self.base.options.z_notext); |
| ... | ... | @@ -1665,6 +1666,17 @@ fn linkWithLLD(self: *Elf, comp: *Compilation, prog_node: *std.Progress.Node) !v |
| 1665 | 1666 | try argv.append(rpath); |
| 1666 | 1667 | } |
| 1667 | 1668 | } |
| 1669 | ||
| 1670 | // wrap | |
| 1671 | var wrap_table = std.StringHashMap(void).init(self.base.allocator); | |
| 1672 | defer wrap_table.deinit(); | |
| 1673 | for (self.base.options.wrap_list) |wrap| { | |
| 1674 | if ((try wrap_table.fetchPut(wrap, {})) == null) { | |
| 1675 | try argv.append("-wrap"); | |
| 1676 | try argv.append(wrap); | |
| 1677 | } | |
| 1678 | } | |
| 1679 | ||
| 1668 | 1680 | if (self.base.options.each_lib_rpath) { |
| 1669 | 1681 | var test_path = std.ArrayList(u8).init(self.base.allocator); |
| 1670 | 1682 | defer test_path.deinit(); |
src/main.zig+14
| ... | ... | @@ -487,6 +487,7 @@ const usage_build_generic = |
| 487 | 487 | \\ -fno-compiler-rt Prevent including compiler-rt symbols in output |
| 488 | 488 | \\ -rdynamic Add all symbols to the dynamic symbol table |
| 489 | 489 | \\ -rpath [path] Add directory to the runtime library search path |
| 490 | \\ -wrap [symbol] Override the symbol with the wrapped symbol definition | |
| 490 | 491 | \\ -feach-lib-rpath Ensure adding rpath for each used dynamic library |
| 491 | 492 | \\ -fno-each-lib-rpath Prevent adding rpath for each used dynamic library |
| 492 | 493 | \\ -fallow-shlib-undefined Allows undefined symbols in shared libraries |
| ... | ... | @@ -874,6 +875,9 @@ fn buildOutputType( |
| 874 | 875 | var rpath_list = std.ArrayList([]const u8).init(gpa); |
| 875 | 876 | defer rpath_list.deinit(); |
| 876 | 877 | |
| 878 | var wrap_list = std.ArrayList([]const u8).init(gpa); | |
| 879 | defer wrap_list.deinit(); | |
| 880 | ||
| 877 | 881 | var c_source_files = std.ArrayList(Compilation.CSourceFile).init(gpa); |
| 878 | 882 | defer c_source_files.deinit(); |
| 879 | 883 | |
| ... | ... | @@ -1475,6 +1479,9 @@ fn buildOutputType( |
| 1475 | 1479 | try system_libs.put(arg["-needed-l".len..], .{ .needed = true }); |
| 1476 | 1480 | } else if (mem.startsWith(u8, arg, "-weak-l")) { |
| 1477 | 1481 | try system_libs.put(arg["-weak-l".len..], .{ .weak = true }); |
| 1482 | } else if (mem.eql(u8, arg, "-wrap")){ | |
| 1483 | try wrap_list.append(arg); | |
| 1484 | try wrap_list.append(args_iter.nextOrFatal()); | |
| 1478 | 1485 | } else if (mem.startsWith(u8, arg, "-D")) { |
| 1479 | 1486 | try clang_argv.append(arg); |
| 1480 | 1487 | } else if (mem.startsWith(u8, arg, "-I")) { |
| ... | ... | @@ -2155,6 +2162,12 @@ fn buildOutputType( |
| 2155 | 2162 | next_arg, |
| 2156 | 2163 | }); |
| 2157 | 2164 | }; |
| 2165 | } else if (mem.eql(u8, arg, "-wrap")) { | |
| 2166 | i += 1; | |
| 2167 | if (i >= linker_args.items.len) { | |
| 2168 | fatal("expected linker arg after '{s}'", .{arg}); | |
| 2169 | } | |
| 2170 | try wrap_list.append(linker_args.items[i]); | |
| 2158 | 2171 | } else if (mem.startsWith(u8, arg, "/subsystem:")) { |
| 2159 | 2172 | var split_it = mem.splitBackwards(u8, arg, ":"); |
| 2160 | 2173 | subsystem = try parseSubSystem(split_it.first()); |
| ... | ... | @@ -3039,6 +3052,7 @@ fn buildOutputType( |
| 3039 | 3052 | .clang_argv = clang_argv.items, |
| 3040 | 3053 | .lib_dirs = lib_dirs.items, |
| 3041 | 3054 | .rpath_list = rpath_list.items, |
| 3055 | .wrap_list = wrap_list.items, | |
| 3042 | 3056 | .c_source_files = c_source_files.items, |
| 3043 | 3057 | .link_objects = link_objects.items, |
| 3044 | 3058 | .framework_dirs = framework_dirs.items, |