[commit: ghc] master: Tweak build rules for libffi (0d72999)

[Ian Lynagh]

Repository : ssh://darcs.haskell.org//srv/darcs/ghc

On branch  : master

http://hackage.haskell.org/trac/ghc/changeset/0d72999279cf583336416a4c76de769bfc839b97

>---------------------------------------------------------------

commit 0d72999279cf583336416a4c76de769bfc839b97
Author: Ian Lynagh <igloo at earth.li>
Date:   Fri Apr 22 12:56:02 2011 +0100

    Tweak build rules for libffi
    
    We were doing
        echo $(HOSTPLATFORM) | sed 's/i[567]86/i486/g'
    but the only x86 value HOSTPLATFORM can have is i386.
    
    We now tell libffi its build platform again, but we now tell it it's
    $(BUILDPLATFORM) rather than $(HOSTPLATFORM).

>---------------------------------------------------------------

 libffi/ghc.mk |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/libffi/ghc.mk b/libffi/ghc.mk
index 2edbc41..1efb8fb 100644
--- a/libffi/ghc.mk
+++ b/libffi/ghc.mk
@@ -34,8 +34,6 @@
 #
 # We use libffi's own configuration stuff.
 
-PLATFORM := $(shell echo $(HOSTPLATFORM) | sed 's/i[567]86/i486/g')
-
 # 2007-07-05
 # Passing
 #     as_ln_s='cp -p'
@@ -125,7 +123,7 @@ $(libffi_STAMP_CONFIGURE):
         "$(SHELL)" configure \
 	          --enable-static=yes \
 	          --enable-shared=$(libffi_EnableShared) \
-	          --host=$(PLATFORM)
+	          --host=$(HOSTPLATFORM) --build=$(BUILDPLATFORM)
 
 	# libffi.so needs to be built with the correct soname.
 	# NOTE: this builds libffi_convience.so with the incorrect