From d3ecbbebd33fffc2e283d0c6524c3647c894fa1b Mon Sep 17 00:00:00 2001
From: Isaac Freund <ifreund@ifreund.xyz>
Date: Fri, 1 Jan 2021 22:56:43 +0100
Subject: std/build: assert that install paths are relative

If absolute paths are passed they will work unless $DESTDIR is set,
which causes subtly broken build.zig's.
---
 lib/std/build.zig | 1 +
 1 file changed, 1 insertion(+)

(limited to 'lib/std/build.zig')

diff --git a/lib/std/build.zig b/lib/std/build.zig
index da14ce84e6..3b6f8815bc 100644
--- a/lib/std/build.zig
+++ b/lib/std/build.zig
@@ -1100,6 +1100,7 @@ pub const Builder = struct {
     }
 
     pub fn getInstallPath(self: *Builder, dir: InstallDir, dest_rel_path: []const u8) []const u8 {
+        assert(!fs.path.isAbsolute(dest_rel_path)); // Install paths must be relative to the prefix
         const base_dir = switch (dir) {
             .Prefix => self.install_path,
             .Bin => self.exe_dir,
-- 
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