[GHC] #5240: help GNU ld to use less memory when linking libraries compiled with -split-objs.

[GHC]

#5240: help GNU ld to use less memory when linking libraries compiled with -split-
objs.
-------------------------------+--------------------------------------------
  Reporter:  int-e             |          Owner:  igloo           
      Type:  feature request   |         Status:  infoneeded      
  Priority:  high              |      Milestone:  7.4.1           
 Component:  Compiler          |        Version:  7.0.3           
Resolution:                    |       Keywords:                  
        Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
   Failure:  None/Unknown      |     Difficulty:  Unknown         
  Testcase:                    |      Blockedby:                  
  Blocking:                    |        Related:                  
-------------------------------+--------------------------------------------

Comment(by pgj):

 Replying to [comment:14 igloo]:
 > Can you show me the output with -v please?

 Sure.  Here it is:

 {{{
 > /usr/local/ghc-7.4.2/bin/ghc -v -c j.c
 Glasgow Haskell Compiler, Version 7.4.2, stage 2 booted by GHC version
 7.0.4
 Using binary package database:
 /usr/local/ghc-7.4.2/lib/ghc-7.4.2/package.conf.d/package.cache
 wired-in package ghc-prim mapped to ghc-
 prim-0.2.0.0-7d3c2c69a5e8257a04b2c679c40e2fa7
 wired-in package integer-gmp mapped to integer-
 gmp-0.4.0.0-af3a28fdc4138858e0c7c5ecc2a64f43
 wired-in package base mapped to
 base-4.5.1.0-ac318071cf9dcba0758e9123955468c5
 wired-in package rts mapped to builtin_rts
 wired-in package template-haskell mapped to template-
 haskell-2.7.0.0-d08d077053eac454ce08e17f2c95c5c8
 wired-in package dph-seq not found.
 wired-in package dph-par not found.
 Hsc static flags: -static
 Created temporary directory: /tmp/ghc33022_0
 *** C Compiler:
 '/usr/bin/gcc' '-fno-stack-protector' '-Wl,--hash-size=31' '-Wl,--reduce-
 memory-overheads' '-x' 'c' 'j.c' '-o' '/tmp/ghc33022_0/ghc33022_0.s' '-S'
 '-Wimplicit' '-O' '-D__GLASGOW_HASKELL__=704' '-DTABLES_NEXT_TO_CODE' '-I'
 '/usr/local/include' '-I'
 '/usr/local/ghc-7.4.2/lib/ghc-7.4.2/base-4.5.1.0/include' '-I'
 '/usr/local/ghc-7.4.2/lib/ghc-7.4.2/include'
 gcc: --hash-size=31: linker input file unused because linking not done
 gcc: --reduce-memory-overheads: linker input file unused because linking
 not done
 *** Assembler:
 '/usr/bin/gcc' '-fno-stack-protector' '-Wl,--hash-size=31' '-Wl,--reduce-
 memory-overheads' '-c' '/tmp/ghc33022_0/ghc33022_0.s' '-o' 'j.o'
 gcc: --hash-size=31: linker input file unused because linking not done
 gcc: --reduce-memory-overheads: linker input file unused because linking
 not done
 *** Deleting temp files:
 Deleting: /tmp/ghc33022_0/ghc33022_0.s
 *** Deleting temp dirs:
 Deleting: /tmp/ghc33022_0
 }}}

 > And can you also clarify whether your ld supports those flags please?

 Well, perhaps the version numbers can tell, but I looked it up in the
 manual page, and ld(1) definitely support these flags.

 So:

 {{{
 > ld -v
 GNU ld 2.17.50 [FreeBSD] 2007-07-03

 > ld --help | grep -E "(hash-size|reduce)"
   --hash-size=<NUMBER>        Set default hash table size close to
 <NUMBER>
   --reduce-memory-overheads   Reduce memory overheads, possibly taking
 much longer
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5240#comment:15>
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