[commit: ghc] master: configure.ac: fix NCG support in --target= (cb18447)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/cb18447c75e7673d5f57056fbdaa370d11e4c05e/ghc

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

commit cb18447c75e7673d5f57056fbdaa370d11e4c05e
Author: Sergei Trofimovich <slyfox at gentoo.org>
Date:   Sun Apr 2 19:38:23 2017 +0100

    configure.ac: fix NCG support in --target=
    
    Before this change attempt to build a crosscompiler
    on registerised platform (--host=x86_64-pc-linux-gnu)
    targeting UNREG platform failed:
        $ ./configure --target=ia64-unknown-linux-gnu
    
      utils/genapply/../../includes/stg/MachRegs.h:608:2: error:
         #error Cannot find platform to give register info for
    
    The change is to check --target= for NCG availability,
    not --host=.
    
    Signed-off-by: Sergei Trofimovich <slyfox at gentoo.org>


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

cb18447c75e7673d5f57056fbdaa370d11e4c05e
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index c7eac4a..65430bf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -241,7 +241,7 @@ AC_SUBST(SOLARIS_BROKEN_SHLD)
 
 dnl ** Do an unregisterised build?
 dnl --------------------------------------------------------------
-case "$HostArch" in
+case "$TargetArch" in
     i386|x86_64|powerpc|powerpc64|powerpc64le|arm)
         UnregisterisedDefault=NO
         ;;