update submodules for GHC.HetMet.GArrow -> Control.GArrow renaming
[ghc-hetmet.git] / configure.ac
index a08c269..b634bbf 100644 (file)
@@ -13,7 +13,7 @@ dnl
 # see what flags are available. (Better yet, read the documentation!)
 #
 
-AC_INIT([The Glorious Glasgow Haskell Compilation System], [6.13], [glasgow-haskell-bugs@haskell.org], [ghc])
+AC_INIT([The Glorious Glasgow Haskell Compilation System], [7.1], [glasgow-haskell-bugs@haskell.org], [ghc])
 
 # Set this to YES for a released version, otherwise NO
 : ${RELEASE=NO}
@@ -27,7 +27,7 @@ AC_INIT([The Glorious Glasgow Haskell Compilation System], [6.13], [glasgow-hask
 # when the source distribution was created.
 
 if test ! -f mk/config.h.in; then
-   echo "mk/config.h.in doesn't exist: perhaps you haven't run 'sh boot'?"
+   echo "mk/config.h.in doesn't exist: perhaps you haven't run 'perl boot'?"
    exit 1
 fi
 
@@ -89,6 +89,11 @@ AC_ARG_WITH([ghc],
   fi
   WithGhc="$GHC"])
 
+
+dnl ** Tell the make system which OS we are using
+dnl $OSTYPE is set by the operating system to "msys" or "cygwin" or something 
+AC_SUBST(OSTYPE)
+
 dnl ** Booting from .hc files?
 dnl --------------------------------------------------------------
 AC_ARG_ENABLE(hc-boot,
@@ -125,22 +130,22 @@ if test "$WithGhc" != ""; then
   AC_SUBST(GhcPatchLevel)dnl
   GhcMinVersion2=`echo "$GhcMinVersion" | sed 's/^\\(.\\)$/0\\1/'`
   GhcCanonVersion="$GhcMajVersion$GhcMinVersion2"
-  if test $GhcCanonVersion -ge 609; then ghc_ge_609=YES; else ghc_ge_609=NO; fi
-  FP_COMPARE_VERSIONS($GhcVersion,[-ge],[6.10.2],
-                      [ghc_ge_6102=YES], [ghc_ge_6102=NO])
-  if test $GhcCanonVersion -ge 611; then ghc_ge_611=YES; else ghc_ge_611=NO; fi
-  AC_SUBST(ghc_ge_609)dnl
-  AC_SUBST(ghc_ge_6102)dnl
-  AC_SUBST(ghc_ge_611)dnl
+  if test $GhcCanonVersion -ge 613; then ghc_ge_613=YES; else ghc_ge_613=NO; fi
+  AC_SUBST(ghc_ge_613)dnl
+
+  BOOTSTRAPPING_GHC_INFO_FIELD([CC_STAGE0],[C compiler command],['$(CC)'])
+  BOOTSTRAPPING_GHC_INFO_FIELD([AR_STAGE0],[ar command],['$(AR)'])
+  BOOTSTRAPPING_GHC_INFO_FIELD([AR_OPTS_STAGE0],[ar flags],['$(AR_OPTS)'])
+  BOOTSTRAPPING_GHC_INFO_FIELD([ArSupportsAtFile_STAGE0],[ar supports at file],['$(ArSupportsAtFile)'])
 fi
 
 dnl ** Must have GHC to build GHC, unless --enable-hc-boot is on
-if test "$BootingFromHc" = "NO" -a -d "$srcdir/compiler"; then
+if test "$BootingFromHc" = "NO"; then
   if test "$WithGhc" = ""; then
      AC_MSG_ERROR([GHC is required unless bootstrapping from .hc files.])
   fi
-  FP_COMPARE_VERSIONS([$GhcVersion],[-lt],[6.8],
-    [AC_MSG_ERROR([GHC version 6.8 or later is required to compile GHC.])])dnl
+  FP_COMPARE_VERSIONS([$GhcVersion],[-lt],[6.12],
+    [AC_MSG_ERROR([GHC version 6.12 or later is required to compile GHC.])])dnl
 
   if test `expr $GhcMinVersion % 2` = "1"; then
      if test "$EnableBootstrapWithDevelSnaphost" = "NO"; then
@@ -156,7 +161,7 @@ fi;
 # GHC is passed to Cabal, so we need a native path
 if test "${WithGhc}" != ""
 then
-    ghc_host=`${WithGhc} +RTS --info | grep 'Host platform' | sed -e 's/.*, "//' -e 's/")//'`
+    ghc_host=`"${WithGhc}" +RTS --info | grep 'Host platform' | sed -e 's/.*, "//' -e 's/")//'`
 
     if test "$ghc_host" = "i386-unknown-mingw32"
     then
@@ -165,7 +170,7 @@ then
             WithGhc=`echo "${WithGhc}" | sed "s#^/\([a-zA-Z]\)/#\1:/#"`
         else
             # Canonicalise to <drive>:/path/to/ghc
-            WithGhc=`cygpath -m ${WithGhc}`
+            WithGhc=`cygpath -m "${WithGhc}"`
         fi
         echo "GHC path canonicalised to: ${WithGhc}"
     fi
@@ -175,74 +180,32 @@ AC_SUBST([WithGhc])
 dnl ** Without optimization some INLINE trickery fails for GHCi
 SRC_CC_OPTS="-O"
 
-dnl Allow to specify iconv options to the toplevel configure script
-dnl so they can be properly passed to sub-builds.
-dnl Note: ICONV_LIB_DIRS and ICONV_INCLUDE_DIRS are not predefined
-dnl to the empty string to allow them to be overridden from the
-dnl environment.
-
-AC_ARG_WITH([iconv-includes],
-  [AC_HELP_STRING([--with-iconv-includes],
-    [directory containing iconv.h])],
-    [ICONV_INCLUDE_DIRS=$withval])
-
-AC_ARG_WITH([iconv-libraries],
-  [AC_HELP_STRING([--with-iconv-libraries],
-    [directory containing iconv library])],
-    [ICONV_LIB_DIRS=$withval])
-
-AC_SUBST(ICONV_INCLUDE_DIRS)
-AC_SUBST(ICONV_LIB_DIRS)
+FP_ICONV
+FP_GMP
 
 dnl--------------------------------------------------------------------
 dnl * Choose host(/target/build) platform
 dnl--------------------------------------------------------------------
-dnl We don't use the standard autoconf macros for this, but instead
-dnl ask the bootstrapping compiler what platform it is for
-
-dnl Guess host/target/build platform(s) if necessary.
-m4_divert_once([HELP_CANON],
-[[
-System types:
-  --build=BUILD     configure for building on BUILD [guessed]
-  --host=HOST       cross-compile to build programs to run on HOST [guessed]
-  --target=TARGET   configure for building compilers for TARGET [guessed]]])dnl
-
-if test "$build" = ""
-then
-    if test "${WithGhc}" != ""
-    then
-        build=`${WithGhc} +RTS --info | grep '^ ,("Target platform"' | sed -e 's/.*, "//' -e 's/")//' | tr -d '\r'`
-        echo "Build platform inferred as: $build"
-    else
-        echo "Can't work out build platform"
-        exit 1
-    fi
-fi
+dnl If we aren't explicitly told what values to use with configure flags,
+dnl we ask the bootstrapping compiler what platform it is for
 
-if test "$host" = ""
+if test "${WithGhc}" != ""
 then
-    if test "${WithGhc}" != ""
-    then
-        host=`${WithGhc} +RTS --info | grep '^ ,("Target platform"' | sed -e 's/.*, "//' -e 's/")//' | tr -d '\r'`
-        echo "Host platform inferred as: $host"
-    else
-        echo "Can't work out host platform"
-        exit 1
-    fi
+        bootstrap_host=`"${WithGhc}" +RTS --info | grep '^ ,("Host platform"' | sed -e 's/.*, "//' -e 's/")//' | tr -d '\r'`
+        bootstrap_target=`"${WithGhc}" +RTS --info | grep '^ ,("Target platform"' | sed -e 's/.*, "//' -e 's/")//' | tr -d '\r'`
+        if test "$bootstrap_host" != "$bootstrap_target"
+        then
+                echo "Bootstrapping GHC is a cross compiler. This probably isn't going to work"
+        fi
 fi
 
-if test "$target" = ""
-then
-    if test "${WithGhc}" != ""
-    then
-        target=`${WithGhc} +RTS --info | grep '^ ,("Target platform"' | sed -e 's/.*, "//' -e 's/")//' | tr -d '\r'`
-        echo "Target platform inferred as: $target"
-    else
-        echo "Can't work out target platform"
-        exit 1
-    fi
-fi
+# We have to run these unconditionally, but we may discard their
+# results in the following code
+AC_CANONICAL_BUILD
+AC_CANONICAL_HOST
+AC_CANONICAL_TARGET
+
+FPTOOLS_SET_PLATFORM_VARS
 
 exeext=''
 soext='.so'
@@ -258,20 +221,27 @@ case $host in
     ;;
 i386-apple-darwin|powerpc-apple-darwin)
     soext='.dylib'
-    CFLAGS="$CFLAGS -m32"
-    LDFLAGS="$LDFLAGS -m32"
-    CONF_CC_OPTS="$CONF_CC_OPTS -m32"
-    CONF_LD_OPTS="$CONF_LD_OPTS -m32"
     ;;
 x86_64-apple-darwin)
     soext='.dylib'
-    CFLAGS="$CFLAGS -m64"
-    LDFLAGS="$LDFLAGS -m64"
-    CONF_CC_OPTS="$CONF_CC_OPTS -m64"
-    CONF_LD_OPTS="$CONF_LD_OPTS -m64"
     ;;
 esac
 
+# Testing if we shall enable shared libs support on Solaris.
+# Anything older than SunOS 5.11 aka Solaris 11 (Express) is broken.
+
+SOLARIS_BROKEN_SHLD=NO
+
+case $host in
+     i386-*-solaris2)
+     # here we go with the test
+     MINOR=`uname -r|cut -d '.' -f 2-`
+     if test "$MINOR" -lt "11"; then
+       SOLARIS_BROKEN_SHLD=YES
+     fi
+     ;;
+esac
+
 checkArch() {
     case $1 in
     alpha|arm|hppa|hppa1_1|i386|ia64|m68k|mips|mipseb|mipsel|powerpc|powerpc64|rs6000|s390|sparc|sparc64|vax|x86_64)
@@ -296,7 +266,7 @@ checkVendor() {
 
 checkOS() {
     case $1 in
-    linux|freebsd|netbsd|openbsd|osf1|osf3|hpux|linuxaout|kfreebsdgnu|freebsd2|solaris2|cygwin32|mingw32|darwin|gnu|nextstep2|nextstep3|sunos4|ultrix|irix|aix)
+    linux|freebsd|netbsd|openbsd|dragonfly|osf1|osf3|hpux|linuxaout|kfreebsdgnu|freebsd2|solaris2|cygwin32|mingw32|darwin|gnu|nextstep2|nextstep3|sunos4|ultrix|irix|aix|haiku)
         ;;
     *)
         echo "Unknown OS '$1'"
@@ -305,10 +275,7 @@ checkOS() {
     esac
 }
 
-BuildPlatform=$build
-BuildArch=`echo "$build" | sed 's/-.*//'`
-BuildVendor=`echo "$build" | sed -e 's/.*-\(.*\)-.*/\1/'`
-BuildOS=`echo "$build" | sed 's/.*-//'`
+BuildPlatform="$BuildArch-$BuildVendor-$BuildOS"
 BuildPlatform_CPP=`echo "$BuildPlatform" | sed -e 's/\./_/g' -e 's/-/_/g'`
 BuildArch_CPP=`    echo "$BuildArch"     | sed -e 's/\./_/g' -e 's/-/_/g'`
 BuildVendor_CPP=`  echo "$BuildVendor"   | sed -e 's/\./_/g' -e 's/-/_/g'`
@@ -318,10 +285,7 @@ checkArch "$BuildArch"
 checkVendor "$BuildVendor"
 checkOS "$BuildOS"
 
-HostPlatform=$host
-HostArch=`echo "$host" | sed 's/-.*//'`
-HostVendor=`echo "$host" | sed -e 's/.*-\(.*\)-.*/\1/'`
-HostOS=`echo "$host" | sed 's/.*-//'`
+HostPlatform="$HostArch-$HostVendor-$HostOS"
 HostPlatform_CPP=`echo "$HostPlatform" | sed -e 's/\./_/g' -e 's/-/_/g'`
 HostArch_CPP=`    echo "$HostArch"     | sed -e 's/\./_/g' -e 's/-/_/g'`
 HostVendor_CPP=`  echo "$HostVendor"   | sed -e 's/\./_/g' -e 's/-/_/g'`
@@ -331,10 +295,7 @@ checkArch "$HostArch"
 checkVendor "$HostVendor"
 checkOS "$HostOS"
 
-TargetPlatform=$target
-TargetArch=`echo "$target" | sed 's/-.*//'`
-TargetVendor=`echo "$target" | sed -e 's/.*-\(.*\)-.*/\1/'`
-TargetOS=`echo "$target" | sed 's/.*-//'`
+TargetPlatform="$TargetArch-$TargetVendor-$TargetOS"
 TargetPlatform_CPP=`echo "$TargetPlatform" | sed -e 's/\./_/g' -e 's/-/_/g'`
 TargetArch_CPP=`    echo "$TargetArch"     | sed -e 's/\./_/g' -e 's/-/_/g'`
 TargetVendor_CPP=`  echo "$TargetVendor"   | sed -e 's/\./_/g' -e 's/-/_/g'`
@@ -344,6 +305,23 @@ checkArch "$TargetArch"
 checkVendor "$TargetVendor"
 checkOS "$TargetOS"
 
+# Verify that the installed (bootstrap) GHC is capable of generating
+# code for the requested build platform.
+if test "$BootingFromHc" = "NO"
+then
+    if test "$BuildPlatform" != "$bootstrap_target"
+    then
+        echo "This GHC (${WithGhc}) does not generate code for the build platform"
+        echo "   GHC target platform    : $bootstrap_target"
+        echo "   Desired build platform : $BuildPlatform"
+        exit 1
+    fi
+fi
+
+echo "GHC build  : $BuildPlatform"
+echo "GHC host   : $HostPlatform"
+echo "GHC target : $TargetPlatform"
+
 AC_SUBST(BuildPlatform)
 AC_SUBST(HostPlatform)
 AC_SUBST(TargetPlatform)
@@ -366,6 +344,8 @@ AC_SUBST(TargetVendor_CPP)
 AC_SUBST(exeext)
 AC_SUBST(soext)
 
+AC_SUBST(SOLARIS_BROKEN_SHLD)
+
 AC_ARG_WITH(hc,
 [AC_HELP_STRING([--with-hc=ARG],
         [Use ARG as the path to the compiler for compiling ordinary
@@ -375,50 +355,127 @@ AC_ARG_WITH(hc,
 )
 AC_SUBST(WithHc)
 
-AC_PATH_PROGS(NHC,nhc nhc98)
-AC_PATH_PROG(HBC,hbc)
+# This uses GHC, so put it after the "GHC is required" check above:
+FP_INTREE_GHC_PWD
+FP_FIND_ROOT
+
+if test "$HostOS" = "mingw32"
+then
+    test -d inplace || mkdir inplace
+
+    CC="$hardtop/inplace/mingw/bin/gcc.exe"
+    LD="$hardtop/inplace/mingw/bin/ld.exe"
+    NM="$hardtop/inplace/mingw/bin/nm.exe"
+    fp_prog_ar_raw="$hardtop/inplace/mingw/bin/ar.exe"
+
+    # NB. If you update the tarbballs to a new version of gcc, don't
+    # forget to tweak the paths in driver/gcc/gcc.c.
+    if ! test -d inplace/mingw ||
+         test inplace/mingw -ot ghc-tarballs/mingw/binutils*.tar.lzma  ||
+         test inplace/mingw -ot ghc-tarballs/mingw/gcc-core*.tar.lzma  ||
+         test inplace/mingw -ot ghc-tarballs/mingw/gcc-c++*.tar.lzma   ||
+         test inplace/mingw -ot ghc-tarballs/mingw/libgcc*.tar.gz      ||
+         test inplace/mingw -ot ghc-tarballs/mingw/libgmp*.tar.gz      ||
+         test inplace/mingw -ot ghc-tarballs/mingw/libmpc*.tar.gz      ||
+         test inplace/mingw -ot ghc-tarballs/mingw/libmpfr*.tar.gz     ||
+         test inplace/mingw -ot ghc-tarballs/mingw/libstdc*.tar.lzma   ||
+         test inplace/mingw -ot ghc-tarballs/mingw/mingwrt*-dev.tar.gz ||
+         test inplace/mingw -ot ghc-tarballs/mingw/mingwrt*-dll.tar.gz ||
+         test inplace/mingw -ot ghc-tarballs/mingw/w32api*.tar.lzma
+    then
+        AC_MSG_NOTICE([Making in-tree mingw tree])
+        rm -rf inplace/mingw
+        mkdir inplace/mingw
+        (
+            cd inplace/mingw &&
+            tar --lzma -xf ../../ghc-tarballs/mingw/binutils*.tar.lzma  &&
+            tar --lzma -xf ../../ghc-tarballs/mingw/gcc-core*.tar.lzma  &&
+            tar --lzma -xf ../../ghc-tarballs/mingw/gcc-c++*.tar.lzma   &&
+            tar --lzma -xf ../../ghc-tarballs/mingw/libgcc*.tar.lzma    &&
+            tar --lzma -xf ../../ghc-tarballs/mingw/libgmp*.tar.lzma    &&
+            tar --lzma -xf ../../ghc-tarballs/mingw/libmpc*.tar.lzma    &&
+            tar --lzma -xf ../../ghc-tarballs/mingw/libmpfr*.tar.lzma   &&
+            tar --lzma -xf ../../ghc-tarballs/mingw/libstdc*.tar.lzma   &&
+            tar -z     -xf ../../ghc-tarballs/mingw/mingwrt*-dev.tar.gz &&
+            tar -z     -xf ../../ghc-tarballs/mingw/mingwrt*-dll.tar.gz &&
+            tar --lzma -xf ../../ghc-tarballs/mingw/w32api*.tar.lzma    &&
+            mv bin/gcc.exe bin/realgcc.exe
+        )
+        PATH=`pwd`/inplace/mingw/bin:$PATH inplace/mingw/bin/realgcc.exe driver/gcc/gcc.c driver/utils/cwrapper.c driver/utils/getLocation.c -Idriver/utils -o inplace/mingw/bin/gcc.exe
+        if ! test -e inplace/mingw/bin/gcc.exe
+        then
+            AC_MSG_ERROR([GHC is required unless bootstrapping from .hc files.])
+        fi
+        AC_MSG_NOTICE([In-tree mingw tree created])
+    fi
+    if ! test -d inplace/perl ||
+         test inplace/perl -ot ghc-tarballs/perl/ghc-perl*.tar.gz
+    then
+        AC_MSG_NOTICE([Making in-tree perl tree])
+        rm -rf inplace/perl
+        mkdir inplace
+        mkdir inplace/perl
+        (
+            cd inplace/perl &&
+            tar -zxf ../../ghc-tarballs/perl/ghc-perl*.tar.gz
+        )
+        AC_MSG_NOTICE([In-tree perl tree created])
+    fi
+fi
 
 dnl ** Which gcc to use?
 dnl --------------------------------------------------------------
-AC_ARG_WITH(gcc,
-[AC_HELP_STRING([--with-gcc=ARG],
-        [Use ARG as the path to GCC  [default=autodetect]])],
-[WhatGccIsCalled="$withval"
- if test "x$HostPlatform"  = "xi386-unknown-mingw32" && \
-    test "${OSTYPE}"      != "msys"                  && \
-    test "${withval}"     != ""
- then
-     # Canonicalise to <drive>:/path/to/gcc
-     withval=`cygpath -m ${withval}`
- fi;
- CC="$withval"
- export CC
- ],
-[WhatGccIsCalled="gcc"]
-)
+FP_ARG_WITH_PATH_GNU_PROG([CC], [gcc])
+export CC
+WhatGccIsCalled="$CC"
 AC_SUBST(WhatGccIsCalled)
 
 dnl ** Which ld to use?
 dnl --------------------------------------------------------------
-AC_ARG_WITH(ld,
-[AC_HELP_STRING([--with-ld=ARG],
-        [Use ARG as the path to LD  [default=autodetect]])],
-[if test "x$HostPlatform"  = "xi386-unknown-mingw32" && \
-    test "${OSTYPE}"      != "msys"                  && \
-    test "${withval}"     != ""
- then
-     # Canonicalise to <drive>:/path/to/ld
-     withval=`cygpath -m ${withval}`
- fi;
- LD=$withval
- FP_PROG_LD([$LD])
- ],
- [FP_PROG_LD()]
-)
+FP_ARG_WITH_PATH_GNU_PROG([LD], [ld])
+LdCmd="$LD"
+AC_SUBST([LdCmd])
 
-# This uses GHC, so put it after the "GHC is required" check above:
-FP_FIND_ROOT
+dnl ** Which nm to use?
+dnl --------------------------------------------------------------
+FP_ARG_WITH_PATH_GNU_PROG([NM], [nm])
+NmCmd="$NM"
+AC_SUBST([NmCmd])
 
+SplitObjsBroken=NO
+if test "$TargetOS_CPP" = "darwin"
+then
+    AC_MSG_CHECKING(XCode version)
+    XCodeVersion=`xcodebuild -version | grep Xcode | sed "s/Xcode //"`
+    # Old XCode versions don't actually give the XCode version
+    if test "$XCodeVersion" = ""
+    then
+        AC_MSG_RESULT(not found (too old?))
+        SplitObjsBroken=YES
+    else
+        AC_MSG_RESULT($XCodeVersion)
+        XCodeVersion1=`echo "$XCodeVersion" | sed 's/\..*//'`
+changequote(, )dnl
+        XCodeVersion2=`echo "$XCodeVersion" | sed 's/[^.]*\.\([^.]*\).*/\1/'`
+changequote([, ])dnl
+        AC_MSG_NOTICE(XCode version component 1: $XCodeVersion1)
+        AC_MSG_NOTICE(XCode version component 2: $XCodeVersion2)
+        # Split objects is broken (#4013) with XCode < 3.2
+        if test "$XCodeVersion1" -lt 3
+        then
+            SplitObjsBroken=YES
+        else
+            if test "$XCodeVersion1" -eq 3
+            then
+                if test "$XCodeVersion2" -lt 2
+                then
+                    SplitObjsBroken=YES
+                fi
+            fi
+        fi
+    fi
+fi
+AC_SUBST([SplitObjsBroken])
 
 dnl ** Mac OS X: explicit deployment target
 dnl --------------------------------------------------------------
@@ -459,26 +516,22 @@ AC_SUBST([GhcLibsWithUnix])
 dnl ** does #! work?
 AC_SYS_INTERPRETER()
 
-dnl ** look for `perl', but only in /bin on Windows
+dnl ** look for `perl'
 case $HostOS_CPP in
 cygwin32|mingw32)
-      AC_CHECK_PROG(PerlCmd,perl,/bin/perl,,/bin)
-      if test -z "$PerlCmd"; then
-         echo "You must install the version of Perl shipped with GHC"
-         echo "(or a compatible one) in /bin."
-         exit 1
-      fi
-   ;;
+    PerlCmd=$hardtop/inplace/perl/perl
+    ;;
 *)
-   AC_PATH_PROG(PerlCmd,perl)
-   if test -z "$PerlCmd"; then
-      echo "You must install perl before you can continue"
-      echo "Perhaps it is already installed, but not in your PATH?"
-      exit 1
-   else
-   FPTOOLS_CHECK_PERL_VERSION
-   fi
-   ;;
+    AC_PATH_PROG(PerlCmd,perl)
+    if test -z "$PerlCmd"
+    then
+        echo "You must install perl before you can continue"
+        echo "Perhaps it is already installed, but not in your PATH?"
+        exit 1
+    else
+        FPTOOLS_CHECK_PERL_VERSION
+    fi
+    ;;
 esac
 
 dnl ** does #! path/to/perl work? (sometimes it's too long...)
@@ -491,15 +544,31 @@ dnl ** look for GCC and find out which version
 dnl     Figure out which C compiler to use.  Gcc is preferred.
 dnl     If gcc, make sure it's at least 2.1
 dnl
-FP_HAVE_GCC
-FP_MINGW_GCC
+FP_GCC_VERSION
+
+FPTOOLS_SET_C_LD_FLAGS([target],[CFLAGS],[LDFLAGS],[IGNORE_LINKER_LD_FLAGS],[CPPFLAGS])
+FPTOOLS_SET_C_LD_FLAGS([build],[CONF_CC_OPTS_STAGE0],[CONF_GCC_LINKER_OPTS_STAGE0],[CONF_LD_LINKER_OPTS_STAGE0],[CONF_CPP_OPTS_STAGE0])
+FPTOOLS_SET_C_LD_FLAGS([target],[CONF_CC_OPTS_STAGE1],[CONF_GCC_LINKER_OPTS_STAGE1],[CONF_LD_LINKER_OPTS_STAGE1],[CONF_CPP_OPTS_STAGE1])
+# Stage 3 won't be supported by cross-compilation
+FPTOOLS_SET_C_LD_FLAGS([target],[CONF_CC_OPTS_STAGE2],[CONF_GCC_LINKER_OPTS_STAGE2],[CONF_LD_LINKER_OPTS_STAGE2],[CONF_CPP_OPTS_STAGE2])
+
 FP_GCC_EXTRA_FLAGS
 
 dnl ** figure out how to invoke cpp directly (gcc -E is no good)
 AC_PROG_CPP
 
-AC_SUBST(CONF_CC_OPTS)
-AC_SUBST(CONF_LD_OPTS)
+AC_SUBST(CONF_CC_OPTS_STAGE0)
+AC_SUBST(CONF_CC_OPTS_STAGE1)
+AC_SUBST(CONF_CC_OPTS_STAGE2)
+AC_SUBST(CONF_GCC_LINKER_OPTS_STAGE0)
+AC_SUBST(CONF_GCC_LINKER_OPTS_STAGE1)
+AC_SUBST(CONF_GCC_LINKER_OPTS_STAGE2)
+AC_SUBST(CONF_LD_LINKER_OPTS_STAGE0)
+AC_SUBST(CONF_LD_LINKER_OPTS_STAGE1)
+AC_SUBST(CONF_LD_LINKER_OPTS_STAGE2)
+AC_SUBST(CONF_CPP_OPTS_STAGE0)
+AC_SUBST(CONF_CPP_OPTS_STAGE1)
+AC_SUBST(CONF_CPP_OPTS_STAGE2)
 
 dnl ** figure out how to do context diffs
 FP_PROG_CONTEXT_DIFF
@@ -514,15 +583,15 @@ dnl If you can run configure, you certainly have /bin/sh
 AC_DEFINE([HAVE_BIN_SH], [1], [Define to 1 if you have /bin/sh.])
 
 dnl ** how to invoke `ar' and `ranlib'
+FP_PROG_AR_SUPPORTS_ATFILE
 FP_PROG_AR_NEEDS_RANLIB
-FP_PROG_AR_SUPPORTS_INPUT
 
 dnl ** Check to see whether ln -s works
 AC_PROG_LN_S
 
 
 dnl ** Find the path to sed
-AC_PATH_PROG(SedCmd,sed)
+AC_PATH_PROGS(SedCmd,gsed sed,sed)
 
 
 dnl ** check for time command
@@ -530,12 +599,22 @@ AC_PATH_PROG(TimeCmd,time)
 
 dnl ** check for tar
 dnl   if GNU tar is named gtar, look for it first.
-AC_PATH_PROGS(TarCmd,gtar tar,tar)
+AC_PATH_PROGS(TarCmd,gnutar gtar tar,tar)
 
 dnl ** check for patch
 dnl if GNU patch is named gpatch, look for it first
 AC_PATH_PROGS(PatchCmd,gpatch patch, patch)
 
+dnl ** check for dtrace (currently only implemented for Mac OS X)
+HaveDtrace=NO
+AC_PATH_PROG(DtraceCmd,dtrace)
+if test -n "$DtraceCmd"; then
+  if test "x$TargetOS_CPP-$TargetVendor_CPP" == "xdarwin-apple" -o "x$TargetOS_CPP-$TargetVendor_CPP" == "xsolaris2-unknown"; then
+    HaveDtrace=YES
+  fi
+fi
+AC_SUBST(HaveDtrace)
+
 AC_PATH_PROG(HSCOLOUR,HsColour)
 # HsColour is passed to Cabal, so we need a native path
 if test "x$HostPlatform"  = "xi386-unknown-mingw32" && \
@@ -551,8 +630,6 @@ FP_CHECK_DOCBOOK_DTD
 FP_DOCBOOK_XSL
 FP_PROG_DBLATEX
 
-FP_PROG_HSTAGS
-
 dnl ** check for ghc-pkg command
 FP_PROG_GHC_PKG
 
@@ -584,7 +661,7 @@ dnl    off_t, because it will affect the result of that test.
 AC_SYS_LARGEFILE
 
 dnl ** check for specific header (.h) files that we are interested in
-AC_CHECK_HEADERS([bfd.h ctype.h dirent.h dlfcn.h errno.h fcntl.h grp.h limits.h locale.h nlist.h pthread.h pwd.h signal.h sys/mman.h sys/resource.h sys/time.h sys/timeb.h sys/timers.h sys/times.h sys/utsname.h sys/wait.h termios.h time.h utime.h windows.h winsock.h sched.h])
+AC_CHECK_HEADERS([bfd.h ctype.h dirent.h dlfcn.h errno.h fcntl.h grp.h limits.h locale.h nlist.h pthread.h pwd.h signal.h sys/cpuset.h sys/mman.h sys/resource.h sys/select.h sys/time.h sys/timeb.h sys/timers.h sys/times.h sys/utsname.h sys/wait.h termios.h time.h utime.h windows.h winsock.h sched.h])
 
 dnl ** check if it is safe to include both <time.h> and <sys/time.h>
 AC_HEADER_TIME
@@ -691,17 +768,21 @@ if test $HaveLibMingwEx = YES ; then
   AC_DEFINE([HAVE_MINGWEX], [1], [Define to 1 if you have the mingwex library.])
 fi
 
+dnl ** check for math library
+dnl    Keep that check as early as possible.
+dnl    as we need to know whether we need libm
+dnl    for math functions or not
+dnl    (see http://hackage.haskell.org/trac/ghc/ticket/3730)
+AC_CHECK_LIB(m, atan, HaveLibM=YES, HaveLibM=NO)
+if test $HaveLibM = YES
+then
+  AC_DEFINE([HAVE_LIBM], [1], [Define to 1 if you need to link with libm])
+fi
+
 dnl ** check whether this machine has BFD and liberty installed (used for debugging)
 dnl    the order of these tests matters: bfd needs liberty
 AC_CHECK_LIB(iberty, xmalloc)
-AC_CHECK_LIB(bfd,    bfd_init)
-
-dnl ** check for math library
-AC_CHECK_FUNC(atan,[fp_libm_not_needed=yes;LIBM=],[fp_libm_not_needed=dunno])
-if test x"$fp_libm_not_needed" = xdunno; then
-   AC_CHECK_LIB([m], [atan], [LIBS="-lm $LIBS"; LIBM="-lm"],[LIBM=])
-fi
-AC_SUBST([LIBM])
+AC_CHECK_LIB(bfd,    bfd_uncompress_section_contents)
 
 dnl ################################################################
 dnl Check for libraries
@@ -739,6 +820,7 @@ FP_LEADING_UNDERSCORE
 dnl ** check for ld, whether it has an -x option, and if it is GNU ld
 FP_PROG_LD_X
 FP_PROG_LD_IS_GNU
+FP_PROG_LD_BUILD_ID
 
 dnl ** check for Apple-style dead-stripping support
 dnl    (.subsections-via-symbols assembler directive)
@@ -756,6 +838,11 @@ AC_COMPILE_IFELSE(
 dnl *** check for GNU non-executable stack note support (ELF only)
 dnl     (.section .note.GNU-stack,"",@progbits)
 
+dnl This test doesn't work with "gcc -g" in gcc 4.4 (GHC trac #3889:
+dnl     Error: can't resolve `.note.GNU-stack' {.note.GNU-stack section} - `.Ltext0' {.text section}
+dnl so we empty CFLAGS while running this test
+CFLAGS2="$CFLAGS"
+CFLAGS=
 AC_MSG_CHECKING(for GNU non-executable stack support)
 AC_COMPILE_IFELSE(
     [AC_LANG_PROGRAM([__asm__ (".section .note.GNU-stack,\"\",@progbits");], [0])],
@@ -764,6 +851,9 @@ AC_COMPILE_IFELSE(
                [Define to 1 if GNU non-executable stack notes are supported.])
     ],
     [AC_MSG_RESULT(no)])
+CFLAGS="$CFLAGS2"
+
+FP_VISIBILITY_HIDDEN
 
 dnl ** check for librt
 AC_CHECK_LIB(rt, clock_gettime)
@@ -784,6 +874,10 @@ AC_TRY_LINK_FUNC(printf\$LDBLStub,
             [Define to 1 if we have printf$LDBLStub (Apple Mac OS >= 10.4, PPC).])
     ])
 
+dnl ** check for eventfd which is needed by the I/O manager
+AC_CHECK_HEADERS([sys/eventfd.h])
+AC_CHECK_FUNCS([eventfd])
+
 # test for GTK+
 AC_PATH_PROGS([GTK_CONFIG], [pkg-config])
 if test -n "$GTK_CONFIG"; then
@@ -831,11 +925,17 @@ fi
 AC_SUBST(BUILD_DOCBOOK_PS)
 AC_SUBST(BUILD_DOCBOOK_PDF)
 
+LIBRARY_VERSION(base)
+LIBRARY_VERSION(Cabal)
+LIBRARY_VERSION(ghc-prim)
+LIBRARY_ghc_VERSION="$ProjectVersion"
+AC_SUBST(LIBRARY_ghc_VERSION)
+
 if grep '      ' compiler/ghc.cabal.in 2>&1 >/dev/null; then
    AC_MSG_ERROR([compiler/ghc.cabal.in contains tab characters; please remove them])
 fi
 
-AC_CONFIG_FILES([mk/config.mk mk/install.mk mk/project.mk compiler/ghc.cabal ghc/ghc-bin.cabal ghc.spec extra-gcc-opts docs/users_guide/ug-book.xml distrib/ghc.iss distrib/configure-bin.ac])
+AC_CONFIG_FILES([mk/config.mk mk/install.mk mk/project.mk compiler/ghc.cabal ghc/ghc-bin.cabal utils/runghc/runghc.cabal ghc.spec settings docs/users_guide/ug-book.xml docs/users_guide/ug-ent.xml docs/index.html libraries/prologue.txt distrib/ghc.iss distrib/configure.ac])
 AC_CONFIG_COMMANDS([mk/stamp-h],[echo timestamp > mk/stamp-h])
 AC_OUTPUT