Add Coercion.lhs
[ghc-hetmet.git] / configure.ac
index a35ad81..3b6cc97 100644 (file)
@@ -15,6 +15,11 @@ dnl
 
 AC_INIT([The Glorious Glasgow Haskell Compilation System], [6.5], [glasgow-haskell-bugs@haskell.org], [ghc])
 
+if test ! -f mk/config.h.in; then
+   echo "mk/config.h.in doesn't exist: perhaps you haven't run 'autoreconf'?"
+   exit 1
+fi
+
 FP_SETUP_PROJECT_VERSION
 
 # Hmmm, we fix the RPM release number to 1 here... Is this convenient?
@@ -77,73 +82,73 @@ exeext=''
 # separately.
 case $HostPlatform in
 alpha*-dec-osf[[12]]*)
-       HostPlatform=alpha-dec-osf1   # canonicalise for our purposes
-       TargetPlatform=alpha-dec-osf1 # this will work for now... (hack)
-       BuildPlatform=alpha-dec-osf1  # hack
+        HostPlatform=alpha-dec-osf1   # canonicalise for our purposes
+        TargetPlatform=alpha-dec-osf1 # this will work for now... (hack)
+        BuildPlatform=alpha-dec-osf1  # hack
         HostPlatform_CPP='alpha_dec_osf1'
         HostArch_CPP='alpha'
         HostVendor_CPP='dec'
         HostOS_CPP='osf1'
         ;;
 alpha*-dec-osf[[345]]*)
-       HostPlatform=alpha-dec-osf3   # canonicalise for our purposes
-       TargetPlatform=alpha-dec-osf3 # this will work for now... (hack)
-       BuildPlatform=alpha-dec-osf3  # hack
+        HostPlatform=alpha-dec-osf3   # canonicalise for our purposes
+        TargetPlatform=alpha-dec-osf3 # this will work for now... (hack)
+        BuildPlatform=alpha-dec-osf3  # hack
         HostPlatform_CPP='alpha_dec_osf3'
         HostArch_CPP='alpha'
         HostVendor_CPP='dec'
         HostOS_CPP='osf3'
         ;;
 alpha*-unknown-linux*)
-       HostPlatform=alpha-unknown-linux
-       TargetPlatform=alpha-unknown-linux
-       BuildPlatform=alpha-unknown-linux
+        HostPlatform=alpha-unknown-linux
+        TargetPlatform=alpha-unknown-linux
+        BuildPlatform=alpha-unknown-linux
         HostPlatform_CPP='alpha_unknown_linux'
         HostArch_CPP='alpha'
         HostVendor_CPP='unknown'
         HostOS_CPP='linux'
         ;;
 alpha*-unknown-freebsd*)
-       HostPlatform=alpha-unknown-freebsd
-       TargetPlatform=alpha-unknown-freebsd
-       BuildPlatform=alpha-unknown-freebsd
+        HostPlatform=alpha-unknown-freebsd
+        TargetPlatform=alpha-unknown-freebsd
+        BuildPlatform=alpha-unknown-freebsd
         HostPlatform_CPP='alpha_unknown_freebsd'
         HostArch_CPP='alpha'
         HostVendor_CPP='unknown'
         HostOS_CPP='freebsd'
         ;;
 alpha*-unknown-openbsd*)
-       HostPlatform=alpha-unknown-openbsd
-       TargetPlatform=alpha-unknown-openbsd
-       BuildPlatform=alpha-unknown-openbsd
+        HostPlatform=alpha-unknown-openbsd
+        TargetPlatform=alpha-unknown-openbsd
+        BuildPlatform=alpha-unknown-openbsd
         HostPlatform_CPP='alpha_unknown_openbsd'
         HostArch_CPP='alpha'
         HostVendor_CPP='unknown'
         HostOS_CPP='openbsd'
         ;;
 amd64-*-openbsd*|x86_64-*-openbsd*)
-       HostPlatform=x86_64-unknown-openbsd
-       TargetPlatform=x86_64-unknown-openbsd
-       BuildPlatform=x86_64-unknown-openbsd
+        HostPlatform=x86_64-unknown-openbsd
+        TargetPlatform=x86_64-unknown-openbsd
+        BuildPlatform=x86_64-unknown-openbsd
         HostPlatform_CPP='x86_64_unknown_openbsd'
         HostArch_CPP='x86_64'
         HostVendor_CPP='unknown'
         HostOS_CPP='openbsd'
         ;;
 amd64-*-freebsd*)
-       HostPlatform=x86_64-unknown-freebsd
-       TargetPlatform=x86_64-unknown-freebsd
-       BuildPlatform=x86_64-unknown-freebsd
-       HostPlatform_CPP='x86_64_unknown_freebsd'
-       HostArch_CPP='x86_64'
-       HostVendor_CPP='unknown'
-       HostOS_CPP='freebsd'
-       ;;
+        HostPlatform=x86_64-unknown-freebsd
+        TargetPlatform=x86_64-unknown-freebsd
+        BuildPlatform=x86_64-unknown-freebsd
+        HostPlatform_CPP='x86_64_unknown_freebsd'
+        HostArch_CPP='x86_64'
+        HostVendor_CPP='unknown'
+        HostOS_CPP='freebsd'
+        ;;
 arm*-linux*)
         HostPlatform=arm-unknown-linux # hack again
         TargetPlatform=arm-unknown-linux
         BuildPlatform=arm-unknown-linux
-        HostPlatform_CPP='arm_unknown_linux'                 
+        HostPlatform_CPP='arm_unknown_linux'
         HostArch_CPP='arm'
         HostVendor_CPP='unknown'
         HostOS_CPP='linux'
@@ -152,7 +157,7 @@ arm*-openbsd*)
         HostPlatform=arm-unknown-openbsd
         TargetPlatform=arm-unknown-openbsd
         BuildPlatform=arm-unknown-openbsd
-        HostPlatform_CPP='arm_unknown_openbsd'                 
+        HostPlatform_CPP='arm_unknown_openbsd'
         HostArch_CPP='arm'
         HostVendor_CPP='unknown'
         HostOS_CPP='openbsd'
@@ -161,42 +166,42 @@ hppa*-*-linux*)
         HostPlatform=hppa-unknown-linux # hack again
         TargetPlatform=hppa-unknown-linux
         BuildPlatform=hppa-unknown-linux
-        HostPlatform_CPP='hppa_unknown_linux'                
+        HostPlatform_CPP='hppa_unknown_linux'
         HostArch_CPP='hppa'
-        HostVendor_CPP='unknown'                             
+        HostVendor_CPP='unknown'
         HostOS_CPP='linux'
         ;;
 hppa*-*-openbsd*)
         HostPlatform=hppa-unknown-openbsd # hack again
         TargetPlatform=hppa-unknown-openbsd
         BuildPlatform=hppa-unknown-openbsd
-        HostPlatform_CPP='hppa_unknown_openbsd'                
+        HostPlatform_CPP='hppa_unknown_openbsd'
         HostArch_CPP='hppa'
-        HostVendor_CPP='unknown'                             
+        HostVendor_CPP='unknown'
         HostOS_CPP='openbsd'
         ;;
 hppa1.1-hp-hpux*)
-       HostPlatform=hppa1.1-hp-hpux  # canonicalise for our purposes (hack)
-       TargetPlatform=hppa1.1-hp-hpux
-       BuildPlatform=hppa1.1-hp-hpux
+        HostPlatform=hppa1.1-hp-hpux  # canonicalise for our purposes (hack)
+        TargetPlatform=hppa1.1-hp-hpux
+        BuildPlatform=hppa1.1-hp-hpux
         HostPlatform_CPP='hppa1_1_hp_hpux'
         HostArch_CPP='hppa1_1'
         HostVendor_CPP='hp'
         HostOS_CPP='hpux'
         ;;
 i[[3456]]86-*-linuxaout*)
-       HostPlatform=i386-unknown-linuxaout   # hack again
-       TargetPlatform=i386-unknown-linuxaout
-       BuildPlatform=i386-unknown-linuxaout
+        HostPlatform=i386-unknown-linuxaout   # hack again
+        TargetPlatform=i386-unknown-linuxaout
+        BuildPlatform=i386-unknown-linuxaout
         HostPlatform_CPP='i386_unknown_linuxaout'
         HostArch_CPP='i386'
         HostVendor_CPP='unknown'
         HostOS_CPP='linuxaout'
         ;;
 i[[3456]]86-*-linux*)
-       HostPlatform=i386-unknown-linux # hack again
-       TargetPlatform=i386-unknown-linux
-       BuildPlatform=i386-unknown-linux
+        HostPlatform=i386-unknown-linux # hack again
+        TargetPlatform=i386-unknown-linux
+        BuildPlatform=i386-unknown-linux
         HostPlatform_CPP='i386_unknown_linux'
         HostArch_CPP='i386'
         HostVendor_CPP='unknown'
@@ -212,79 +217,79 @@ i[[3456]]86-*-kfreebsd*-gnu)
         HostOS_CPP='kfreebsdgnu'
         ;;
 i[[3456]]86-*-freebsd[[3-9]]*) # FreeBSD 3.0+ uses ELF
-       HostPlatform=i386-unknown-freebsd # hack again
-       TargetPlatform=i386-unknown-freebsd
-       BuildPlatform=i386-unknown-freebsd
+        HostPlatform=i386-unknown-freebsd # hack again
+        TargetPlatform=i386-unknown-freebsd
+        BuildPlatform=i386-unknown-freebsd
         HostPlatform_CPP='i386_unknown_freebsd'
         HostArch_CPP='i386'
         HostVendor_CPP='unknown'
         HostOS_CPP='freebsd'
         ;;
 i[[3456]]86-*-freebsd2*) # Older FreeBSDs are a.out
-       HostPlatform=i386-unknown-freebsd2 # hack again
-       TargetPlatform=i386-unknown-freebsd2
-       BuildPlatform=i386-unknown-freebsd2
+        HostPlatform=i386-unknown-freebsd2 # hack again
+        TargetPlatform=i386-unknown-freebsd2
+        BuildPlatform=i386-unknown-freebsd2
         HostPlatform_CPP='i386_unknown_freebsd2'
         HostArch_CPP='i386'
         HostVendor_CPP='unknown'
         HostOS_CPP='freebsd2'
         ;;
 i[[3456]]86-*-netbsd*)
-       HostPlatform=i386-unknown-netbsd # hack again
-       TargetPlatform=i386-unknown-netbsd
-       BuildPlatform=i386-unknown-netbsd
+        HostPlatform=i386-unknown-netbsd # hack again
+        TargetPlatform=i386-unknown-netbsd
+        BuildPlatform=i386-unknown-netbsd
         HostPlatform_CPP='i386_unknown_netbsd'
         HostArch_CPP='i386'
         HostVendor_CPP='unknown'
         HostOS_CPP='netbsd'
         ;;
 i[[3456]]86-*-openbsd*)
-       HostPlatform=i386-unknown-openbsd # hack again
-       TargetPlatform=i386-unknown-openbsd
-       BuildPlatform=i386-unknown-openbsd
+        HostPlatform=i386-unknown-openbsd # hack again
+        TargetPlatform=i386-unknown-openbsd
+        BuildPlatform=i386-unknown-openbsd
         HostPlatform_CPP='i386_unknown_openbsd'
         HostArch_CPP='i386'
         HostVendor_CPP='unknown'
         HostOS_CPP='openbsd'
         ;;
 i[[3456]]86-*-solaris2*)
-       HostPlatform=i386-unknown-solaris2 # hack again
-       TargetPlatform=i386-unknown-solaris2
-       BuildPlatform=i386-unknown-solaris2
+        HostPlatform=i386-unknown-solaris2 # hack again
+        TargetPlatform=i386-unknown-solaris2
+        BuildPlatform=i386-unknown-solaris2
         HostPlatform_CPP='i386_unknown_solaris2'
         HostArch_CPP='i386'
         HostVendor_CPP='unknown'
         HostOS_CPP='solaris2'
         ;;
 i[[3456]]86-*-cygwin*)
-       HostPlatform=i386-unknown-cygwin32 # hack again
-       TargetPlatform=i386-unknown-cygwin32
-       BuildPlatform=i386-unknown-cygwin32
+        HostPlatform=i386-unknown-cygwin32 # hack again
+        TargetPlatform=i386-unknown-cygwin32
+        BuildPlatform=i386-unknown-cygwin32
         HostPlatform_CPP='i386_unknown_cygwin32'
         HostArch_CPP='i386'
         HostVendor_CPP='unknown'
         HostOS_CPP='cygwin32'
-       exeext='.exe'
+        exeext='.exe'
         ;;
 i[[3456]]86-*-mingw32*)
-       HostPlatform=i386-unknown-mingw32 # hack again
-       TargetPlatform=i386-unknown-mingw32
-       BuildPlatform=i386-unknown-mingw32
+        HostPlatform=i386-unknown-mingw32 # hack again
+        TargetPlatform=i386-unknown-mingw32
+        BuildPlatform=i386-unknown-mingw32
         HostPlatform_CPP='i386_unknown_mingw32'
         HostArch_CPP='i386'
         HostVendor_CPP='unknown'
         HostOS_CPP='mingw32'
-       exeext='.exe'
+        exeext='.exe'
         ;;
 i[[3456]]86-apple-darwin*)
-       HostPlatform=i386-apple-darwin
-       TargetPlatform=i386-apple-darwin #hack
-       BuildPlatform=i386-apple-darwin #hack
-       HostPlatform_CPP='i386_apple_darwin'
-       HostArch_CPP='i386'
-       HostVendor_CPP='apple'
-       HostOS_CPP='darwin'
-       ;;
+        HostPlatform=i386-apple-darwin
+        TargetPlatform=i386-apple-darwin #hack
+        BuildPlatform=i386-apple-darwin #hack
+        HostPlatform_CPP='i386_apple_darwin'
+        HostArch_CPP='i386'
+        HostVendor_CPP='apple'
+        HostOS_CPP='darwin'
+        ;;
 i[[3456]]86-*-gnu*)
         HostPlatform=i386-unknown-gnu
         TargetPlatform=i386-unknown-gnu
@@ -311,10 +316,10 @@ x86_64-*-linux*)
         HostArch_CPP='x86_64'
         HostVendor_CPP='unknown'
         HostOS_CPP='linux'
-       ;;
+        ;;
 m68k-*-linux*)
         HostPlatform=m68k-unknown-linux # hack again
-        TargetPlatform=m68k-unknown-linux                    
+        TargetPlatform=m68k-unknown-linux
         BuildPlatform=m68k-unknown-linux
         HostPlatform_CPP='m68k_unknown_linux'
         HostArch_CPP='m68k'
@@ -334,45 +339,45 @@ m68k-next-nextstep3)
         HostOS_CPP='nextstep3'
         ;;
 i[[3456]]86-next-nextstep3)
-       HostPlatform=i386-next-nextstep3 # hack again
-       TargetPlatform=i386-next-nextstep3
-       BuildPlatform=i386-next-nextstep3
+        HostPlatform=i386-next-nextstep3 # hack again
+        TargetPlatform=i386-next-nextstep3
+        BuildPlatform=i386-next-nextstep3
         HostPlatform_CPP='i386_next_nextstep3'
         HostArch_CPP='i386'
         HostVendor_CPP='next'
         HostOS_CPP='nextstep3'
         ;;
 m68k-*-openbsd*)
-       HostPlatform=m68k-unknown-openbsd
-       TargetPlatform=m68k-unknown-openbsd
-       BuildPlatform=m68k-unknown-openbsd
+        HostPlatform=m68k-unknown-openbsd
+        TargetPlatform=m68k-unknown-openbsd
+        BuildPlatform=m68k-unknown-openbsd
         HostPlatform_CPP='m68k_unknown_openbsd'
         HostArch_CPP='m68k'
         HostVendor_CPP='unknown'
         HostOS_CPP='openbsd'
         ;;
 m68k-*-netbsd*)
-       HostPlatform=m68k-unknown-netbsd
-       TargetPlatform=m68k-unknown-netbsd
-       BuildPlatform=m68k-unknown-netbsd
+        HostPlatform=m68k-unknown-netbsd
+        TargetPlatform=m68k-unknown-netbsd
+        BuildPlatform=m68k-unknown-netbsd
         HostPlatform_CPP='m68k_unknown_netbsd'
         HostArch_CPP='m68k'
         HostVendor_CPP='unknown'
         HostOS_CPP='netbsd'
         ;;
 m68k-sun-sunos4*)
-       HostPlatform=m68k-sun-sunos4
-       TargetPlatform=m68k-sun-sunos4 #hack
-       BuildPlatform=m68k-sun-sunos4 #hack
+        HostPlatform=m68k-sun-sunos4
+        TargetPlatform=m68k-sun-sunos4 #hack
+        BuildPlatform=m68k-sun-sunos4 #hack
         HostPlatform_CPP='m68k_sun_sunos4'
         HostArch_CPP='m68k'
         HostVendor_CPP='sun'
         HostOS_CPP='sunos4'
         ;;
 m88k-*-openbsd*)
-       HostPlatform=m88k-unknown-openbsd
-       TargetPlatform=m88k-unknown-openbsd
-       BuildPlatform=m88k-unknown-openbsd
+        HostPlatform=m88k-unknown-openbsd
+        TargetPlatform=m88k-unknown-openbsd
+        BuildPlatform=m88k-unknown-openbsd
         HostPlatform_CPP='m88k_unknown_openbsd'
         HostArch_CPP='m88k'
         HostVendor_CPP='unknown'
@@ -387,6 +392,15 @@ mips-*-linux*)
         HostVendor_CPP='unknown'
         HostOS_CPP='linux'
         ;;
+mipsel-*-linux*)
+        HostPlatform=mipsel-unknown-linux # hack again
+        TargetPlatform=mipsel-unknown-linux
+        BuildPlatform=mipsel-unknown-linux
+        HostPlatform_CPP='mipsel_unknown_linux'
+        HostArch_CPP='mipsel'
+        HostVendor_CPP='unknown'
+        HostOS_CPP='linux'
+        ;;
 mips-dec-ultrix*)
         HostPlatform_CPP='mips_dec_ultrix'
         HostArch_CPP='mipsel'   # NB a little different
@@ -394,41 +408,41 @@ mips-dec-ultrix*)
         HostOS_CPP='ultrix'
         ;;
 mips-sgi-irix*)
-       HostPlatform=mips-sgi-irix
-       TargetPlatform=mips-sgi-irix #hack
-       BuildPlatform=mips-sgi-irix #hack
+        HostPlatform=mips-sgi-irix
+        TargetPlatform=mips-sgi-irix #hack
+        BuildPlatform=mips-sgi-irix #hack
         HostPlatform_CPP='mips_sgi_irix'
         HostArch_CPP='mipseb'   # NB a little different
         HostVendor_CPP='sgi'
         HostOS_CPP='irix'
         ;;
 rs6000-ibm-aix*)
-       HostPlatform=rs6000-ibm-aix
-       TargetPlatform=rs6000-ibm-aix #hack
-       BuildPlatform=rs6000-ibm-aix #hack
+        HostPlatform=rs6000-ibm-aix
+        TargetPlatform=rs6000-ibm-aix #hack
+        BuildPlatform=rs6000-ibm-aix #hack
         HostPlatform_CPP='rs6000_ibm_aix'
         HostArch_CPP='rs6000'
         HostVendor_CPP='ibm'
         HostOS_CPP='aix'
         ;;
 powerpc-ibm-aix*)
-       HostPlatform=powerpc-ibm-aix
-       TargetPlatform=powerpc-ibm-aix #hack
-       BuildPlatform=powerpc-ibm-aix #hack
+        HostPlatform=powerpc-ibm-aix
+        TargetPlatform=powerpc-ibm-aix #hack
+        BuildPlatform=powerpc-ibm-aix #hack
         HostPlatform_CPP='powerpc_ibm_aix'
         HostArch_CPP='powerpc'
         HostVendor_CPP='ibm'
         HostOS_CPP='aix'
         ;;
 powerpc-apple-darwin*)
-       HostPlatform=powerpc-apple-darwin
-       TargetPlatform=powerpc-apple-darwin #hack
-       BuildPlatform=powerpc-apple-darwin #hack
-       HostPlatform_CPP='powerpc_apple_darwin'
-       HostArch_CPP='powerpc'
-       HostVendor_CPP='apple'
-       HostOS_CPP='darwin'
-       ;;
+        HostPlatform=powerpc-apple-darwin
+        TargetPlatform=powerpc-apple-darwin #hack
+        BuildPlatform=powerpc-apple-darwin #hack
+        HostPlatform_CPP='powerpc_apple_darwin'
+        HostArch_CPP='powerpc'
+        HostVendor_CPP='apple'
+        HostOS_CPP='darwin'
+        ;;
 powerpc-unknown-linux*)
         HostPlatform=powerpc-unknown-linux
         TargetPlatform=powerpc-unknown-linux
@@ -448,15 +462,15 @@ powerpc-unknown-openbsd*)
         HostOS_CPP='openbsd'
         ;;
 powerpc64-unknown-linux*)
-       HostPlatform=powerpc64-unknown-linux
-       TargetPlatform=powerpc64-unknown-linux
-       BuildPlatform=powerpc64-unknown-linux
-       HostPlatform_CPP='powerpc64_unknown_linux'
-       HostArch_CPP='powerpc64'
+        HostPlatform=powerpc64-unknown-linux
+        TargetPlatform=powerpc64-unknown-linux
+        BuildPlatform=powerpc64-unknown-linux
+        HostPlatform_CPP='powerpc64_unknown_linux'
+        HostArch_CPP='powerpc64'
         HostVendor_CPP='unknown'
-       HostOS_CPP='linux'
-       ;;
-                                                               
+        HostOS_CPP='linux'
+        ;;
+
 s390-ibm-linux*)
        HostPlatform=s390-ibm-linux
        TargetPlatform=s390-ibm-linux #hack
@@ -467,18 +481,18 @@ s390-ibm-linux*)
         HostOS_CPP='linux'
         ;;
 sparc-sun-sunos4*)
-       HostPlatform=sparc-sun-sunos4
-       TargetPlatform=sparc-sun-sunos4 #hack
-       BuildPlatform=sparc-sun-sunos4 #hack
+        HostPlatform=sparc-sun-sunos4
+        TargetPlatform=sparc-sun-sunos4 #hack
+        BuildPlatform=sparc-sun-sunos4 #hack
         HostPlatform_CPP='sparc_sun_sunos4'
         HostArch_CPP='sparc'
         HostVendor_CPP='sun'
         HostOS_CPP='sunos4'
         ;;
 sparc-sun-solaris2*)
-       HostPlatform=sparc-sun-solaris2
-       TargetPlatform=sparc-sun-solaris2 #hack
-       BuildPlatform=sparc-sun-solaris2 #hack
+        HostPlatform=sparc-sun-solaris2
+        TargetPlatform=sparc-sun-solaris2 #hack
+        BuildPlatform=sparc-sun-solaris2 #hack
         HostPlatform_CPP='sparc_sun_solaris2'
         HostArch_CPP='sparc'
         HostVendor_CPP='sun'
@@ -573,23 +587,28 @@ dnl Remove common automounter nonsense
 dnl
 hardtop=`echo $hardtop | sed 's|^/tmp_mnt.*\(/local/.*\)$|\1|' | sed 's|^/tmp_mnt/|/|' | sed 's|^//\(.\)/|\1:/|' `
 
-dnl Find 'hardtop_plat', the native format for 'hardtop' 
-dnl (i.e., right kind of \dnl slashes on a Win32 box, but with b-slashes being escaped).
+dnl Find 'hardtop_plat', the native format for 'hardtop'
+dnl (i.e., right kind of \dnl slashes on a Win32 box, but with b-slashes
+dnl being escaped).
 dnl
-dnl Note OSTYPE: On Cygwin we need to use 'cygpath' to convert /cygdrive/c/foo to c:/foo
-dnl             but we must not do that if we aren't building using Cygwin (notably msys), 
-dnl             because cygpath doesn't exist.  It seems that 'bash' sets OSTYPE to 'cygwin' 
-dnl             or 'msys' respectively, but cygwin's 'sh' does not.  So we hackily assume
-dnl             that if the shell hasn't set it to 'msys' then we must be in Cygwin.  Sigh.
+dnl Note OSTYPE: On Cygwin we need to use 'cygpath' to convert
+dnl              /cygdrive/c/foo to c:/foo but we must not do that if we
+dnl              aren't building using Cygwin (notably msys), because
+dnl              cygpath doesn't exist.  It seems that 'bash' sets
+dnl              OSTYPE to 'cygwin' or 'msys' respectively, but cygwin's
+dnl              'sh' does not.  So we hackily assume that if the shell
+dnl              hasn't set it to 'msys' then we must be in Cygwin.
+dnl              Sigh.
 dnl
-dnl             The Right Thing is probably to test $BuildPlatform instead, but we are sloppy 
-dnl             about setting that correctly at the moment, so we just work around for now.
+dnl              The Right Thing is probably to test $BuildPlatform
+dnl              instead, but we are sloppy about setting that correctly
+dnl              at the moment, so we just work around for now.
 dnl
-dnl             The quotes round "$(OSTYPE)" are essential, for the Cygwin-sh case where OSTYPE
-dnl             is not set.
+dnl              The quotes round "$(OSTYPE)" are essential, for the
+dnl              Cygwin-sh case where OSTYPE is not set.
 case $HostPlatform in
   i386-unknown-mingw32 | i386-unknown-cygwin32)
-        if test "${OSTYPE}" != "msys" 
+        if test "${OSTYPE}" != "msys"
           then
             # convert $hardtop to a path that mingw will understand too
             cyghardtop=${hardtop}
@@ -600,8 +619,8 @@ case $HostPlatform in
         fi
         ;;
   *)
-       hardtop_plat=${hardtop}
-       ;;
+        hardtop_plat=${hardtop}
+        ;;
 esac
 AC_SUBST(hardtop)
 AC_SUBST(hardtop_plat)
@@ -640,7 +659,7 @@ AC_SUBST([WithGhc])
 AC_ARG_WITH(hc,
 [AC_HELP_STRING([--with-hc=ARG],
         [Use ARG as the path to the compiler for compiling ordinary
-        Haskell code  (default= value of --with-ghc)])],
+         Haskell code  (default= value of --with-ghc)])],
 [WithHc="$withval"],
 [WithHc=$WithGhc]
 )
@@ -688,9 +707,9 @@ AC_ARG_ENABLE(hc-boot,
 [Boot the Glasgow Haskell Compiler from intermediate .hc files.
  (This option is mostly of interest to porters.) [default=no]])],
 [ if test x"$enableval" = x"yes"; then
-       BootingFromHc=YES
+        BootingFromHc=YES
   else
-       BootingFromHc=NO
+        BootingFromHc=NO
   fi
 ],
 [BootingFromHc=NO]
@@ -705,9 +724,9 @@ AC_ARG_ENABLE(hc-boot-unregisterised,
  unregisterised rather than registerised code.
  (This option is mostly of interest to porters.) [default=no]])],
 [ if test x"$enableval" = x"yes"; then
-       BootingFromUnregisterisedHc=YES
+        BootingFromUnregisterisedHc=YES
   else
-       BootingFromUnregisterisedHc=NO
+        BootingFromUnregisterisedHc=NO
   fi
 ],
 [BootingFromUnregisterisedHc=NO]
@@ -721,7 +740,7 @@ fi;
 fi;
 
 dnl ** Must have GHC to build GHC, unless --enable-hc-boot is on
-if test "$BootingFromHc" = "NO" -a "$WithGhc" = "" -a -d "$srcdir/ghc"; then
+if test "$BootingFromHc" = "NO" -a "$WithGhc" = "" -a -d "$srcdir/compiler"; then
 AC_MSG_ERROR([GHC is required unless bootstrapping from .hc files.])
 fi;
 
@@ -729,17 +748,17 @@ dnl ** Enable the construction of Win32 DLLs?
 dnl --------------------------------------------------------------
 dnl
 dnl [ The ability to build the RTS and libraries as separate DLLs used
-dnl   to be supported, but isn't currently (updates to the RTS, compiler 
+dnl   to be supported, but isn't currently (updates to the RTS, compiler
 dnl   and build system would be required to bring it back again.)
 dnl   Hence, exposing it as an option is false advertisement, so better
 dnl   disable it to avoid confusion (but leave it commented-out rather
-dnl   than removed in order to remind ourselves to bring back the 
+dnl   than removed in order to remind ourselves to bring back the
 dnl   feature at some stage.) ]
 dnl
 dnl AC_ARG_ENABLE(win32-dlls,
 dnl [  --enable-win32-dlls
 dnl         If on a Win32 platform running mingw32/cygwin, enable the
-dnl    construction of DLLs containing ghc-compiled code.
+dnl         construction of DLLs containing ghc-compiled code.
 dnl ],
 dnl [
 dnl case $HostOS_CPP in
@@ -764,9 +783,9 @@ AC_ARG_ENABLE(objectio,
 [AC_HELP_STRING([--enable-objectio],
 [Build ObjectIO, a portable GUI library for Haskell. [default=no]])],
 [ if test x"$enableval" = x"yes"; then
-       GhcLibsWithObjectIO=YES
+        GhcLibsWithObjectIO=YES
   else
-       GhcLibsWithObjectIO=NO
+        GhcLibsWithObjectIO=NO
   fi
 ],
 [GhcLibsWithObjectIO=NO]
@@ -779,9 +798,9 @@ AC_ARG_ENABLE(dotnet,
 [AC_HELP_STRING([--enable-dotnet],
 [Build .NET interop layer. [default=no]])],
 [ if test x"$enableval" = x"yes"; then
-       DotnetSupport=YES; AC_DEFINE([WANT_DOTNET_SUPPORT], [1], [Define to 1 if you want to include .NET interop support.])
-  else 
-       DotnetSupport=NO
+        DotnetSupport=YES; AC_DEFINE([WANT_DOTNET_SUPPORT], [1], [Define to 1 if you want to include .NET interop support.])
+  else
+        DotnetSupport=NO
   fi],
 [DotnetSupport=NO]
 )
@@ -844,6 +863,7 @@ dnl
 FP_HAVE_GCC
 FP_MINGW_GCC
 FP_GCC_NEEDS_NO_OMIT_LFPTR
+FP_GCC_HAS_NO_UNIT_AT_A_TIME
 
 dnl ** figure out how to invoke cpp directly (gcc -E is no good)
 AC_PROG_CPP
@@ -908,51 +928,15 @@ FPTOOLS_GREENCARD(3.00)
 ]
 )
 
-AC_ARG_ENABLE(src-tree-happy,
-[AC_HELP_STRING([--enable-src-tree-happy],
-       [Build and use source tree (fptools/happy) version of Happy. 
-        [default=autodetect]])],
-[ if test x"$enableval" = x"yes"; then
-       UseSrcTreeHappy=YES
-  else
-       UseSrcTreeHappy=NO
-  fi
-],
-[UseSrcTreeHappy=NO]
-)
 dnl ** check for installed happy binary + version
 dnl    (don't do it if we're booting from .hc files though.)
 if test "$BootingFromHc" = "NO"; then
 FPTOOLS_HAPPY
 fi;
 
-AC_ARG_ENABLE(src-tree-haddock,
-[AC_HELP_STRING([--enable-src-tree-haddock],
-        [Build and use source tree (fptools/haddock) version of Haddock.
-        [default=autodetect]])],
-[ if test x"$enableval" = x"yes"; then
-       UseSrcTreeHaddock=YES
-  else
-       UseSrcTreeHaddock=NO
-  fi
-],
-[UseSrcTreeHaddock=NO]
-)
 dnl ** check for installed haddock
 FPTOOLS_HADDOCK
 
-AC_ARG_ENABLE(src-tree-alex,
-[AC_HELP_STRING([--enable-src-tree-alex],
-        [Build and use source tree (fptools/alex) version of Alex.
-        [default=autodetect]])],
-[ if test x"$enableval" = x"yes"; then
-       UseSrcTreeAlex=YES
-  else
-       UseSrcTreeAlex=NO
-  fi
-],
-[UseSrcTreeAlex=NO]
-)
 dnl ** check for installed alex binary + version
 dnl    (don't do it if we're booting from .hc files though.)
 if test "$BootingFromHc" = "NO"; then
@@ -992,12 +976,6 @@ AC_SUBST(GhcLibsWithReadline)
 dnl ** check if it is safe to include both <time.h> and <sys/time.h>
 AC_HEADER_TIME
 
-dnl ** how do we get a timezone name, and UTC offset ?
-AC_STRUCT_TIMEZONE
-
-dnl ** do we have altzone?
-FP_DECL_ALTZONE
-
 dnl ** do we have long longs?
 AC_CHECK_TYPES([long long])
 
@@ -1118,40 +1096,6 @@ dnl    the order of these tests matters: bfd needs liberty
 AC_CHECK_LIB(iberty, xmalloc)
 AC_CHECK_LIB(bfd,    bfd_init)
 
-dnl ** check for readline, for Hugs and hslibs' Readline
-dnl ncurses supersedes termcap and curses, but for compatibility,
-dnl we have to check for all...
-AC_CHECK_LIB(ncurses, tputs, HaveLibTermcap=YES; LibTermcap=ncurses,
-  AC_CHECK_LIB(termcap, tputs, HaveLibTermcap=YES; LibTermcap=termcap,
-    AC_CHECK_LIB(curses, tputs, HaveLibTermcap=YES; LibTermcap=curses,
-      HaveLibTermcap=NO; LibTermcap=not-installed)))
-
-if test $HaveLibTermcap = YES ; then
-  LIBS="-l$LibTermcap $LIBS"
-  AC_CHECK_LIB(readline, readline, HaveLibReadline=YES, HaveLibReadline=NO)
-fi
-
-if test $HaveLibTermcap = YES && test x"$HaveLibReadline" = xYES ; then
-  AC_DEFINE([HAVE_READLINE_LIBS], [1], [Define to 1 if readline plus any additional libs needed for it exist.])
-  LibsReadline="readline $LibTermcap"
-else
-  AC_DEFINE([HAVE_READLINE_LIBS], [0], [Define to 1 if readline plus any additional libs needed for it exist.])
-  LibsReadline=
-fi
-AC_SUBST(LibsReadline)
-
-if test "$HaveLibReadline"; then
-  AC_CHECK_LIB(readline, rl_erase_empty_line,
-    [AC_DEFINE([HAVE_READLINE_4], [1], [Define to 1 if readline has version >= 4.0.])],
-    [AC_DEFINE([HAVE_READLINE_4], [0], [Define to 1 if readline has version >= 4.0.])])
-  AC_CHECK_LIB(readline, rl_free_undo_list,
-    [AC_DEFINE([HAVE_READLINE_4_2], [1], [Define to 1 if readline has version >= 4.2.])],
-    [AC_DEFINE([HAVE_READLINE_4_2], [0], [Define to 1 if readline has version >= 4.2.])])
-else
-  AC_DEFINE([HAVE_READLINE_4], [0], [Define to 1 if readline has version >= 4.0.])
-  AC_DEFINE([HAVE_READLINE_4_2], [0], [Define to 1 if readline has version >= 4.2.])
-fi
-
 dnl ** check for math library
 AC_CHECK_FUNC(atan,[fp_libm_not_needed=yes;LIBM=],[fp_libm_not_needed=dunno])
 if test x"$fp_libm_not_needed" = xdunno; then
@@ -1165,10 +1109,10 @@ dnl ################################################################
 
 dnl ** check whether we need -ldl to get dlopen()
 
-AC_CHECK_LIB(dl, dlopen, 
+AC_CHECK_LIB(dl, dlopen,
     [HaveLibDL=YES
      AC_DEFINE([HAVE_LIBDL], [1], [Define to 1 if you need -ldl to get dlopen().])
-     LIBS="$LIBS -ldl"], 
+     LIBS="$LIBS -ldl"],
     [HaveLibDL=NO])
 AC_SUBST(HaveLibDL)
 
@@ -1200,17 +1144,25 @@ dnl    (.subsections-via-symbols assembler directive)
 
 
 AC_MSG_CHECKING(for .subsections_via_symbols)
-AC_TRY_COMPILE(,[__asm__ (".subsections_via_symbols");],
-    [
-        AC_MSG_RESULT(yes)
-        AC_DEFINE([HAVE_SUBSECTIONS_VIA_SYMBOLS],[1],
-            [Define to 1 if Apple-style dead-stripping is supported.])
+AC_COMPILE_IFELSE(
+    [AC_LANG_PROGRAM([], [__asm__ (".subsections_via_symbols");])],
+    [AC_MSG_RESULT(yes)
+     AC_DEFINE([HAVE_SUBSECTIONS_VIA_SYMBOLS],[1],
+               [Define to 1 if Apple-style dead-stripping is supported.])
     ],
-    [
-        AC_MSG_RESULT(no)
-        AC_DEFINE([HAVE_SUBSECTIONS_VIA_SYMBOLS],[0],
-            [Define to 1 if Apple-style dead-stripping is supported.])
-    ])
+    [AC_MSG_RESULT(no)])
+
+dnl *** check for GNU non-executable stack note support (ELF only)
+dnl     (.section .note.GNU-stack,"",@progbits)
+
+AC_MSG_CHECKING(for GNU non-executable stack support)
+AC_COMPILE_IFELSE(
+    [AC_LANG_PROGRAM([__asm__ (".section .note.GNU-stack,\"\",@progbits");], [0])],
+    [AC_MSG_RESULT(yes)
+     AC_DEFINE([HAVE_GNU_NONEXEC_STACK],[1],
+               [Define to 1 if GNU non-executable stack notes are supported.])
+    ],
+    [AC_MSG_RESULT(no)])
 
 dnl ** check for librt
 AC_CHECK_LIB(rt, clock_gettime)