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From 751da768de9b58126fef8f69c70eea5c4180f739 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 | 56 ++++++++++++++++++++++++-
lib/std/zig/system/NativeTargetInfo.zig | 25 +++++++++--
src/main.zig | 3 +-
3 files changed, 78 insertions(+), 6 deletions(-)
diff --git a/lib/std/zig/system/NativePaths.zig b/lib/std/zig/system/NativePaths.zig
index 8e3e46e481..bb6ac32da6 100644
--- a/lib/std/zig/system/NativePaths.zig
+++ b/lib/std/zig/system/NativePaths.zig
@@ -25,7 +25,53 @@ pub fn detect(allocator: Allocator, native_info: NativeTargetInfo) !NativePaths
.warnings = ArrayList([:0]u8).init(allocator),
};
errdefer self.deinit();
-
+ if (isGuix(allocator)) {
+ const guix_cross_include_paths = [_][]const u8{ "CROSS_C_INCLUDE_PATH", "CROSS_CPLUS_INCLUDE_PATH" };
+ for (guix_cross_include_paths) |env_var| {
+ if (process.getEnvVarOwned(allocator, env_var)) |include_path| {
+ var it = mem.tokenize(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(allocator, "CROSS_LIBRARY_PATH")) |library_path| {
+ var it = mem.tokenize(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(allocator)) {
+ const guix_include_paths = [_][]const u8{ "C_INCLUDE_PATH", "CPLUS_INCLUDE_PATH" };
+ for (guix_include_paths) |env_var| {
+ if (process.getEnvVarOwned(allocator, env_var)) |include_path| {
+ var it = mem.tokenize(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(allocator, "LIBRARY_PATH")) |library_path| {
+ var it = mem.tokenize(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(allocator, "NIX_CFLAGS_COMPILE")) |nix_cflags_compile| {
defer allocator.free(nix_cflags_compile);
@@ -203,3 +249,11 @@ fn appendArray(self: *NativePaths, array: *ArrayList([:0]u8), s: []const u8) !vo
errdefer array.allocator.free(item);
try array.append(item);
}
+
+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 af41fc7905..4ee5ee0b6e 100644
--- a/lib/std/zig/system/NativeTargetInfo.zig
+++ b/lib/std/zig/system/NativeTargetInfo.zig
@@ -784,10 +784,27 @@ 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.tokenize(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 42daa95d3a..1ab9d0f7aa 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -2039,7 +2039,8 @@ fn buildOutputType(
want_native_include_dirs = true;
}
- if (sysroot == null and cross_target.isNativeOs() and (system_libs.count() != 0 or want_native_include_dirs)) {
+ if (std.zig.system.NativePaths.isCrossGuix(arena) or
+ sysroot == null and cross_target.isNativeOs() and (system_libs.count() != 0 or want_native_include_dirs)) {
const paths = std.zig.system.NativePaths.detect(arena, target_info) catch |err| {
fatal("unable to detect native system paths: {s}", .{@errorName(err)});
};
--
2.46.0
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