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This patch replaces the OS-specific detection mechanism by one that solely
relies on environment variables. This has the benefit that said environment
variables can be used as search paths in Guix.
diff --git a/lib/std/zig/system/NativePaths.zig b/lib/std/zig/system/NativePaths.zig
index 8e3e46e48..1ed9d3206 100644
--- a/lib/std/zig/system/NativePaths.zig
+++ b/lib/std/zig/system/NativePaths.zig
@@ -26,73 +26,42 @@ pub fn detect(allocator: Allocator, native_info: NativeTargetInfo) !NativePaths
};
errdefer self.deinit();
- var is_nix = false;
- if (process.getEnvVarOwned(allocator, "NIX_CFLAGS_COMPILE")) |nix_cflags_compile| {
- defer allocator.free(nix_cflags_compile);
-
- is_nix = true;
- var it = mem.tokenize(u8, nix_cflags_compile, " ");
+ // TODO: Support cross-compile paths?
+ if (process.getEnvVarOwned(allocator, "C_INCLUDE_PATH")) |c_include_path| {
+ defer allocator.free(c_include_path);
+ var it = mem.tokenize(u8, c_include_path, ":");
while (true) {
- const word = it.next() orelse break;
- if (mem.eql(u8, word, "-isystem")) {
- const include_path = it.next() orelse {
- try self.addWarning("Expected argument after -isystem in NIX_CFLAGS_COMPILE");
- break;
- };
- try self.addIncludeDir(include_path);
- } else {
- if (mem.startsWith(u8, word, "-frandom-seed=")) {
- continue;
- }
- try self.addWarningFmt("Unrecognized C flag from NIX_CFLAGS_COMPILE: {s}", .{word});
- }
+ const dir = it.next() orelse break;
+ try self.addIncludeDir(dir);
}
} else |err| switch (err) {
error.InvalidUtf8 => {},
error.EnvironmentVariableNotFound => {},
error.OutOfMemory => |e| return e,
}
- if (process.getEnvVarOwned(allocator, "NIX_LDFLAGS")) |nix_ldflags| {
- defer allocator.free(nix_ldflags);
-
- is_nix = true;
- var it = mem.tokenize(u8, nix_ldflags, " ");
+ if (process.getEnvVarOwned(allocator, "CPLUS_INCLUDE_PATH")) |cplus_include_path| {
+ defer allocator.free(cplus_include_path);
+ var it = mem.tokenize(u8, cplus_include_path, ":");
while (true) {
- const word = it.next() orelse break;
- if (mem.eql(u8, word, "-rpath")) {
- const rpath = it.next() orelse {
- try self.addWarning("Expected argument after -rpath in NIX_LDFLAGS");
- break;
- };
- try self.addRPath(rpath);
- } else if (word.len > 2 and word[0] == '-' and word[1] == 'L') {
- const lib_path = word[2..];
- try self.addLibDir(lib_path);
- } else {
- try self.addWarningFmt("Unrecognized C flag from NIX_LDFLAGS: {s}", .{word});
- break;
- }
+ const dir = it.next() orelse break;
+ try self.addIncludeDir(dir);
}
} else |err| switch (err) {
error.InvalidUtf8 => {},
error.EnvironmentVariableNotFound => {},
error.OutOfMemory => |e| return e,
}
- if (is_nix) {
- return self;
- }
-
- if (comptime builtin.target.isDarwin()) {
- try self.addIncludeDir("/usr/include");
- try self.addIncludeDir("/usr/local/include");
-
- try self.addLibDir("/usr/lib");
- try self.addLibDir("/usr/local/lib");
-
- try self.addFrameworkDir("/Library/Frameworks");
- try self.addFrameworkDir("/System/Library/Frameworks");
-
- return self;
+ if (process.getEnvVarOwned(allocator, "LIBRARY_PATH")) |library_path| {
+ defer allocator.free(library_path);
+ var it = mem.tokenize(u8, library_path, ":");
+ while (true) {
+ const dir = it.next() orelse break;
+ try self.addLibDir(dir);
+ }
+ } else |err| switch (err) {
+ error.InvalidUtf8 => {},
+ error.EnvironmentVariableNotFound => {},
+ error.OutOfMemory => |e| return e,
}
if (comptime native_target.os.tag == .solaris) {
@@ -106,32 +75,17 @@ pub fn detect(allocator: Allocator, native_info: NativeTargetInfo) !NativePaths
return self;
}
- if (native_target.os.tag != .windows) {
- const triple = try native_target.linuxTriple(allocator);
- const qual = native_target.cpu.arch.ptrBitWidth();
-
- // TODO: $ ld --verbose | grep SEARCH_DIR
- // the output contains some paths that end with lib64, maybe include them too?
- // TODO: what is the best possible order of things?
- // TODO: some of these are suspect and should only be added on some systems. audit needed.
-
- try self.addIncludeDir("/usr/local/include");
- try self.addLibDirFmt("/usr/local/lib{d}", .{qual});
- try self.addLibDir("/usr/local/lib");
-
- try self.addIncludeDirFmt("/usr/include/{s}", .{triple});
- try self.addLibDirFmt("/usr/lib/{s}", .{triple});
-
- try self.addIncludeDir("/usr/include");
- try self.addLibDirFmt("/lib{d}", .{qual});
- try self.addLibDir("/lib");
- try self.addLibDirFmt("/usr/lib{d}", .{qual});
- try self.addLibDir("/usr/lib");
-
- // example: on a 64-bit debian-based linux distro, with zlib installed from apt:
- // zlib.h is in /usr/include (added above)
- // libz.so.1 is in /lib/x86_64-linux-gnu (added here)
- try self.addLibDirFmt("/lib/{s}", .{triple});
+ if (process.getEnvVarOwned(allocator, "DYLD_FRAMEWORK_PATH")) |dyld_framework_path| {
+ defer allocator.free(dyld_framework_path);
+ var it = mem.tokenize(u8, dyld_framework_path, ":");
+ while (true) {
+ const dir = it.next() orelse break;
+ try self.addFrameworkDir(dir);
+ }
+ } else |err| switch (err) {
+ error.InvalidUtf8 => {},
+ error.EnvironmentVariableNotFound => {},
+ error.OutOfMemory => |e| return e,
}
return self;
|