diff --git a/lib/compiler/Maker.zig b/lib/compiler/Maker.zig
index b5db0e68f7597a1e951900e8b741afb20521bcda..ade19eeb33a672846fb80709ff26089cbb883fac 100644
--- a/lib/compiler/Maker.zig
+++ b/lib/compiler/Maker.zig
@@ -242,6 +242,12 @@ pub fn main(init: process.Init.Minimal) !void {
         }
     }
 
+    if (EnvVar.ZIG_BUILD_SUMMARY.get(&graph.environ_map)) |str| {
+        if (stringToEnum(Summary, str)) |value| {
+            summary = value;
+        }
+    }
+
     try configure_argv.ensureUnusedCapacity(arena, 16);
     try cached_passthru_configure.ensureUnusedCapacity(arena, 16);
 
diff --git a/lib/std/zig.zig b/lib/std/zig.zig
index 4c41d56845f7ebd32bb83a51d2ec182b7e4e7154..858fb169439c2cdffa31f200e650e7151a2da991 100644
--- a/lib/std/zig.zig
+++ b/lib/std/zig.zig
@@ -763,6 +763,7 @@ pub const EnvVar = enum {
     ZIG_LIBC,
     ZIG_BUILD_ERROR_STYLE,
     ZIG_BUILD_MULTILINE_ERRORS,
+    ZIG_BUILD_SUMMARY,
     ZIG_VERBOSE_LINK,
     ZIG_VERBOSE_CC,
     ZIG_VERBOSE_CMD,