GHC：爲ARM和MIPS處理器靜態鏈接Linux二進制文件

Question

我正在使用Debian/MIPS + QEMU構建MIPS ports of PortFusion（TCP隧道解決方案）。產生的二進制文件與GNU libc鏈接。因此，他們不能被複制和使用在與uclibc，而不是eglibc（似乎與GNU libc二進制兼容）的香草OpenWrt上。

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• 能GHC 7.4沒有靜態鏈接的libc（+ libgmp等）的Linux二進制文件ARM和MIPS處理器？
• 如何查看GHC是否使用完全靜態編譯生成？

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-static忽視了MIPS：

root@debian:~# cat hello.hs 
main = print 2 
root@debian:~# ghc --make hello.hs 
[1 of 1] Compiling Main    (hello.hs, hello.o) 
Linking hello ... 
root@debian:~# ldd ./hello 
    libgmp.so.10 => /usr/lib/mips-linux-gnu/libgmp.so.10 (0x77908000) 
    libffi.so.5 => /usr/lib/mips-linux-gnu/libffi.so.5 (0x778ea000) 
    libm.so.6 => /lib/mips-linux-gnu/libm.so.6 (0x77855000) 
    librt.so.1 => /lib/mips-linux-gnu/librt.so.1 (0x7783c000) 
    libdl.so.2 => /lib/mips-linux-gnu/libdl.so.2 (0x77827000) 
    libc.so.6 => /lib/mips-linux-gnu/libc.so.6 (0x776a0000) 
    libpthread.so.0 => /lib/mips-linux-gnu/libpthread.so.0 (0x77675000) 
    /lib/ld.so.1 (0x55550000) 
root@debian:~# rm hello 
root@debian:~# ghc --make -static hello.hs 
Linking hello ... 
root@debian:~# ldd ./hello 
    libgmp.so.10 => /usr/lib/mips-linux-gnu/libgmp.so.10 (0x76f98000) 
    libffi.so.5 => /usr/lib/mips-linux-gnu/libffi.so.5 (0x76f7a000) 
    libm.so.6 => /lib/mips-linux-gnu/libm.so.6 (0x76ee5000) 
    librt.so.1 => /lib/mips-linux-gnu/librt.so.1 (0x76ecc000) 
    libdl.so.2 => /lib/mips-linux-gnu/libdl.so.2 (0x76eb7000) 
    libc.so.6 => /lib/mips-linux-gnu/libc.so.6 (0x76d30000) 
    libpthread.so.0 => /lib/mips-linux-gnu/libpthread.so.0 (0x76d05000) 
    /lib/ld.so.1 (0x55550000) 

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信息上GHC：

root@debian:~# ghc --info 
[("Project name","The Glorious Glasgow Haskell Compilation System") 
,("GCC extra via C opts"," -fwrapv") 
,("C compiler command","/usr/bin/gcc") 
,("C compiler flags"," -fno-stack-protector -Wl,--hash-size=31 -Wl,--reduce-memory-overheads") 
,("ar command","/usr/bin/ar") 
,("ar flags","q") 
,("ar supports at file","YES") 
,("touch command","touch") 
,("dllwrap command","/bin/false") 
,("windres command","/bin/false") 
,("perl command","/usr/bin/perl") 
,("target os","OSLinux") 
,("target arch","ArchUnknown") 
,("target word size","4") 
,("target has GNU nonexec stack","True") 
,("target has subsections via symbols","False") 
,("Project version","7.4.1") 
,("Booter version","7.4.1") 
,("Stage","2") 
,("Build platform","mips-unknown-linux") 
,("Host platform","mips-unknown-linux") 
,("Target platform","mips-unknown-linux") 
,("Have interpreter","NO") 
,("Object splitting supported","NO") 
,("Have native code generator","NO") 
,("Support SMP","NO") 
,("Unregisterised","YES") 
,("Tables next to code","YES") 
,("RTS ways","l debug ") 
,("Leading underscore","NO") 
,("Debug on","False") 
,("LibDir","/usr/lib/ghc") 
,("Global Package DB","/usr/lib/ghc/package.conf.d") 
,("Gcc Linker flags","[\"-Wl,--hash-size=31\",\"-Wl,--reduce-memory-overheads\"]") 
,("Ld Linker flags","[\"--hash-size=31\",\"--reduce-memory-overheads\"]") 
] 

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參見：Can GHC link binaries against a libc implementation such as uclibc (used in OpenWrt by default)?

Answer 1

In fact，-static標誌只是告訴GHC避免動態鏈接到哈斯克爾庫。要靜態鏈接到C庫，您還需要通過-optl-pthread -optl-static。後者告訴鏈接器靜態鏈接到C庫，而前者是（AFAIK）需要的，因爲鏈接庫的某些排序在執行此操作時會被搞亂。

對於x86上的完全靜態二進制文件，您也需要相同的標誌，因此這不是針對ARM和MIPS的。