1 files changed, 35 insertions, 0 deletions
diff --git a/src/lib9/goos.c b/src/lib9/goos.c
new file mode 100644
index 000000000..668dc1941
--- /dev/null
+++ b/src/lib9/goos.c
@@ -0,0 +1,35 @@
+// Copyright 2010 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include <u.h>
+#include <libc.h>
+
+static char*
+defgetenv(char *name, char *def)
+{
+	char *p;
+	
+	p = getenv(name);
+	if(p == nil || p[0] == '\0')
+		p = def;
+	return p;
+}
+
+char*
+getgoos(void)
+{
+	return defgetenv("GOOS", GOOS);
+}
+
+char*
+getgoarch(void)
+{
+	return defgetenv("GOARCH", GOARCH);
+}
+
+char*
+getgoroot(void)
+{
+	return defgetenv("GOROOT", GOROOT);
+}