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From 8b76c88e577fcd6a054ecfee333b2989ec94a3cc Mon Sep 17 00:00:00 2001
From: Hilton Chain <hako@ultrarare.space>
Date: Wed, 27 Nov 2024 11:54:51 +0800
Subject: [PATCH] Use system paths.
Prefer Guix search paths and support Guix cross builds.
---
lib/std/zig/system/NativePaths.zig | 53 +++++++++++++++++++++++++
lib/std/zig/system/NativeTargetInfo.zig | 25 ++++++++++--
src/main.zig | 3 +-
3 files changed, 76 insertions(+), 5 deletions(-)
diff --git a/lib/std/zig/system/NativePaths.zig b/lib/std/zig/system/NativePaths.zig
index 4c8f1286b8..5b4805f6c6 100644
--- a/lib/std/zig/system/NativePaths.zig
+++ b/lib/std/zig/system/NativePaths.zig
@@ -17,6 +17,51 @@ warnings: std.ArrayListUnmanaged([]const u8) = .{},
pub fn detect(arena: Allocator, native_info: NativeTargetInfo) !NativePaths {
const native_target = native_info.target;
var self: NativePaths = .{ .arena = arena };
+ if (isGuix(arena)) {
+ inline for ([_][]const u8{ "CROSS_C_INCLUDE_PATH", "CROSS_CPLUS_INCLUDE_PATH" }) |env_var| {
+ if (process.getEnvVarOwned(arena, env_var)) |include_path| {
+ var it = mem.tokenizeScalar(u8, include_path, ':');
+ while (it.next()) |dir|
+ try self.addIncludeDir(dir);
+ } else |err| switch (err) {
+ error.InvalidUtf8 => {},
+ error.EnvironmentVariableNotFound => {},
+ error.OutOfMemory => |e| return e,
+ }
+ }
+ if (process.getEnvVarOwned(arena, "CROSS_LIBRARY_PATH")) |library_path| {
+ var it = mem.tokenizeScalar(u8, library_path, ':');
+ while (it.next()) |dir|
+ try self.addLibDir(dir);
+ } else |err| switch (err) {
+ error.InvalidUtf8 => {},
+ error.EnvironmentVariableNotFound => {},
+ error.OutOfMemory => |e| return e,
+ }
+ if (!isCrossGuix(arena)) {
+ inline for ([_][]const u8{ "C_INCLUDE_PATH", "CPLUS_INCLUDE_PATH" }) |env_var| {
+ if (process.getEnvVarOwned(arena, env_var)) |include_path| {
+ var it = mem.tokenizeScalar(u8, include_path, ':');
+ while (it.next()) |dir|
+ try self.addIncludeDir(dir);
+ } else |err| switch (err) {
+ error.InvalidUtf8 => {},
+ error.EnvironmentVariableNotFound => {},
+ error.OutOfMemory => |e| return e,
+ }
+ }
+ if (process.getEnvVarOwned(arena, "LIBRARY_PATH")) |library_path| {
+ var it = mem.tokenizeScalar(u8, library_path, ':');
+ while (it.next()) |dir|
+ try self.addLibDir(dir);
+ } else |err| switch (err) {
+ error.InvalidUtf8 => {},
+ error.EnvironmentVariableNotFound => {},
+ error.OutOfMemory => |e| return e,
+ }
+ }
+ return self;
+ }
var is_nix = false;
if (process.getEnvVarOwned(arena, "NIX_CFLAGS_COMPILE")) |nix_cflags_compile| {
is_nix = true;
@@ -196,3 +241,11 @@ pub fn addWarningFmt(self: *NativePaths, comptime fmt: []const u8, args: anytype
pub fn addRPath(self: *NativePaths, s: []const u8) !void {
try self.rpaths.append(self.arena, s);
}
+
+pub fn isCrossGuix(arena: Allocator) bool {
+ return process.hasEnvVar(arena, "CROSS_LIBRARY_PATH") catch false;
+}
+
+pub fn isGuix(arena: Allocator) bool {
+ return isCrossGuix(arena) or process.hasEnvVar(arena, "LIBRARY_PATH") catch false;
+}
diff --git a/lib/std/zig/system/NativeTargetInfo.zig b/lib/std/zig/system/NativeTargetInfo.zig
index 99a1a8f2ef..50d0d9949c 100644
--- a/lib/std/zig/system/NativeTargetInfo.zig
+++ b/lib/std/zig/system/NativeTargetInfo.zig
@@ -923,10 +923,27 @@ fn defaultAbiAndDynamicLinker(cpu: Target.Cpu, os: Target.Os, cross_target: Cros
};
return NativeTargetInfo{
.target = target,
- .dynamic_linker = if (cross_target.dynamic_linker.get() == null)
- target.standardDynamicLinkerPath()
- else
- cross_target.dynamic_linker,
+ .dynamic_linker = if (cross_target.dynamic_linker.get() == null) blk: {
+ var standard_linker = target.standardDynamicLinkerPath();
+ if (standard_linker.get()) |standard_linker_path| {
+ if (builtin.os.tag != .windows and builtin.os.tag != .wasi) {
+ if (std.os.getenv("CROSS_LIBRARY_PATH") orelse std.os.getenv("LIBRARY_PATH")) |library_path| {
+ const linker_basename = fs.path.basename(standard_linker_path);
+ var buffer: [255]u8 = undefined;
+ var it = mem.tokenizeScalar(u8, library_path, ':');
+ while (it.next()) |dir| {
+ const linker_fullpath = std.fmt.bufPrint(&buffer, "{s}{s}{s}", .{ dir, fs.path.sep_str, linker_basename }) catch "";
+ const guix_linker_path = fs.cwd().realpath(linker_fullpath, &buffer) catch "";
+ if (guix_linker_path.len != 0) {
+ standard_linker.set(guix_linker_path);
+ break;
+ }
+ }
+ }
+ }
+ }
+ break :blk standard_linker;
+ } else cross_target.dynamic_linker,
};
}
diff --git a/src/main.zig b/src/main.zig
index 456886c915..e2a97bf244 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -2674,7 +2674,8 @@ fn buildOutputType(
// After this point, external_system_libs is used instead of system_libs.
// Trigger native system library path detection if necessary.
- if (sysroot == null and cross_target.isNativeOs() and cross_target.isNativeAbi() and
+ if (std.zig.system.NativePaths.isCrossGuix(arena) or
+ sysroot == null and cross_target.isNativeOs() and cross_target.isNativeAbi() and
(external_system_libs.len != 0 or want_native_include_dirs))
{
const paths = std.zig.system.NativePaths.detect(arena, target_info) catch |err| {
--
2.46.0
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