GHC的-c和-no-link选项有什么区别？

Question

帮助说:

 -c  Do not link

和

 -no-link  Omit linking

据我所知,-c完全阻止了连接部分.但是如果我指定的话有什么区别-no-link？链接阶段实际上除了链接之外还做了什么吗？

更新:有趣的是,-no-link被弃用GHC 6.12,但在GHC 7 undeprecated.

Answer 1

AFAK -c不处理依赖项.例如

Main.hs:

module Main
where

import Test

main :: IO ()
main = test

Test.hs:

module Test
where

test :: IO ()
test = print 123

尝试编译-c:

$ ghc -c Main.hs

Main.hs:5:1:
    Failed to load interface for `Test'
    Use -v to see a list of the files searched for.

用-no-link:

$ ghc -no-link Main.hs
[1 of 2] Compiling Test             ( Test.hs, Test.o )
[2 of 2] Compiling Main             ( Main.hs, Main.o )