cmd/gc: document -pack flag

R=golang-codereviews, r
CC=golang-codereviews
https://golang.org/cl/55140044

diff --git a/src/cmd/gc/doc.go b/src/cmd/gc/doc.go
index 791967708c81a81a6aaa3185d2874be2b98a7dbb..ce9ebcfb2a6ca8593e30138287d8372cd621054c 100644 (file)
--- a/src/cmd/gc/doc.go
+++ b/src/cmd/gc/doc.go
@@ -37,6 +37,8 @@ Substitute 6g with 8g or 5g where appropriate.
 Flags:
        -o file
                output file, default file.6 for 6g, etc.
+       -pack
+               write a package file rather than an object file
        -e
                normally the compiler quits after 10 errors; -e prints all errors
        -p path