GHC drops -optl flags

This is a regression between GHC 7.10 and GHC 8.0.

Repro script:

GHC_ROOT=$HOME/local/ghc-8.0.1-facebook # built 8.0.1 branch, fails with recent HEAD as well
GHC=$GHC_ROOT/inplace/bin/ghc-stage2
GPP=g++
touch build_info.o # irrelevant
"$GHC" -no-auto-link-packages -pgml"$GPP" -o a.out build_info.o -optl-Xlinker -optl$GHC_ROOT/libraries/ghc-prim/dist-install/build/libHSghc-prim-0.5.0.0.a -optl-Xlinker -optl-u -optl-Xlinker -optlghczmprim_GHCziTypes_Izh_static_info -v

Output from GHC 7.10 (expected):

Glasgow Haskell Compiler, Version 7.10.2, stage 2 booted by GHC version 7.8.4
Using binary package database: /usr/local/haskell/ghc-7.10.2-x86_64/lib/ghc-7.10.2/package.conf.d/package.cache
Using binary package database: /home/bnitka/.ghc/x86_64-linux-7.10.2/package.conf.d/package.cache
wired-in package ghc-prim mapped to ghc-prim-0.4.0.0-af16264bc80979d06e37ac63e3ba9a21
wired-in package integer-gmp mapped to integer-gmp-1.0.0.0-8e0f14d0262184533b417ca1f8b44482
wired-in package base mapped to base-4.8.1.0-4f7206fd964c629946bb89db72c80011
wired-in package rts mapped to builtin_rts
wired-in package template-haskell mapped to template-haskell-2.10.0.0-90e8393d65f4ae44cb2026177a257f28
wired-in package ghc mapped to ghc-7.10.2-787f1a784665fb3ac2a1be1d9d85245b
wired-in package dph-seq not found.
wired-in package dph-par not found.
Hsc static flags:
Created temporary directory: /tmp/ghc2775839_0
*** C Compiler:
/usr/bin/gcc -fno-stack-protector -DTABLES_NEXT_TO_CODE -c /tmp/ghc2775839_0/ghc_1.c -o /tmp/ghc2775839_0/ghc_2.o -I/usr/local/haskell/ghc-7.10.2-x86_64/lib/ghc-7.10.2/include
*** C Compiler:
/usr/bin/gcc -fno-stack-protector -DTABLES_NEXT_TO_CODE -c /tmp/ghc2775839_0/ghc_3.s -o /tmp/ghc2775839_0/ghc_4.o -I/usr/local/haskell/ghc-7.10.2-x86_64/lib/ghc-7.10.2/include
*** Linker:
'g++' '-Wl,--hash-size=31' -Wl,--reduce-memory-overheads -Wl,--no-as-needed -Xlinker /home/bnitka/local/ghc-8.0.1-facebook/libraries/ghc-prim/dist-install/build/libHSghc-prim-0.5.0.0.a -Xlinker -u -Xlinker ghczmprim_GHCziTypes_Izh_static_info -o a.out build_info.o /tmp/ghc2775839_0/ghc_2.o /tmp/ghc2775839_0/ghc_4.o
build_info.o: file not recognized: File truncated
collect2: ld returned 1 exit status
*** Deleting temp files:
Deleting: /tmp/ghc2775839_0/ghc_4.o /tmp/ghc2775839_0/ghc_3.s /tmp/ghc2775839_0/ghc_2.o /tmp/ghc2775839_0/ghc_1.c
*** Deleting temp dirs:
Deleting: /tmp/ghc2775839_0

Output from GHC 8.0:

Glasgow Haskell Compiler, Version 8.0.1.20160729, stage 2 booted by GHC version 7.10.2
Using binary package database: /data/users/bnitka/ghc-8.0.1-facebook/inplace/lib/package.conf.d/package.cache
loading package database /data/users/bnitka/ghc-8.0.1-facebook/inplace/lib/package.conf.d
wired-in package ghc-prim mapped to ghc-prim-0.5.0.0
wired-in package integer-gmp mapped to integer-gmp-1.0.0.1
wired-in package base mapped to base-4.9.0.0
wired-in package rts mapped to rts
wired-in package template-haskell mapped to template-haskell-2.11.0.0
wired-in package ghc mapped to ghc-8.0.1.20160729
wired-in package dph-seq not found.
wired-in package dph-par not found.
Hsc static flags:
Created temporary directory: /tmp/ghc2778573_0
*** C Compiler:
/usr/bin/gcc -fno-stack-protector -DTABLES_NEXT_TO_CODE -c /tmp/ghc2778573_0/ghc_1.c -o /tmp/ghc2778573_0/ghc_2.o -I/data/users/bnitka/ghc-8.0.1-facebook/rts/dist/build -I/data/users/bnitka/ghc-8.0.1-facebook/includes -I/data/users/bnitka/ghc-8.0.1-facebook/includes/dist-derivedconstants/header
*** C Compiler:
/usr/bin/gcc -fno-stack-protector -DTABLES_NEXT_TO_CODE -c /tmp/ghc2778573_0/ghc_4.s -o /tmp/ghc2778573_0/ghc_5.o
*** Linker:
'g++' '-Wl,--hash-size=31' -Wl,--reduce-memory-overheads -Wl,--no-as-needed -Xlinker -Xlinker -u -Xlinker ghczmprim_GHCziTypes_Izh_static_info -o a.out -Wl,--gc-sections build_info.o /tmp/ghc2778573_0/ghc_2.o /tmp/ghc2778573_0/ghc_5.o /home/bnitka/local/ghc-8.0.1-facebook/libraries/ghc-prim/dist-install/build/libHSghc-prim-0.5.0.0.a
g++: ghczmprim_GHCziTypes_Izh_static_info: No such file or directory
*** Deleting temp files:
Deleting: /tmp/ghc2778573_0/ghc_7.rsp /tmp/ghc2778573_0/ghc_6.rsp /tmp/ghc2778573_0/ghc_5.o /tmp/ghc2778573_0/ghc_4.s /tmp/ghc2778573_0/ghc_3.rsp /tmp/ghc2778573_0/ghc_2.o /tmp/ghc2778573_0/ghc_1.c
*** Deleting temp dirs:
Deleting: /tmp/ghc2778573_0
`g++' failed in phase `Linker'. (Exit code: 1)

The relevant difference is in the flags passed to g++.

'g++' '-Wl,--hash-size=31' -Wl,--reduce-memory-overheads -Wl,--no-as-needed -Xlinker /home/bnitka/local/ghc-8.0.1-facebook/libraries/ghc-prim/dist-install/build/libHSghc-prim-0.5.0.0.a -Xlinker -u -Xlinker ghczmprim_GHCziTypes_Izh_static_info -o a.out build_info.o /tmp/ghc2775839_0/ghc_2.o /tmp/ghc2775839_0/ghc_4.o

vs

'g++' '-Wl,--hash-size=31' -Wl,--reduce-memory-overheads -Wl,--no-as-needed -Xlinker -Xlinker -u -Xlinker ghczmprim_GHCziTypes_Izh_static_info -o a.out -Wl,--gc-sections build_info.o /tmp/ghc2778573_0/ghc_2.o /tmp/ghc2778573_0/ghc_5.o /home/bnitka/local/ghc-8.0.1-facebook/libraries/ghc-prim/dist-install/build/libHSghc-prim-0.5.0.0.a

Trac metadata

Trac field	Value
Version	8.0.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	high
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC	ezyang, simonmar
Operating system
Architecture