Fix warnings in deSugar/DsListComp.lhs
[ghc.git] / configure.ac
index b281cd8..c80c32c 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], [7.1], [glasgow-haskell-bugs@haskell.org], [ghc])
+AC_INIT([The Glorious Glasgow Haskell Compilation System], [7.3], [glasgow-haskell-bugs@haskell.org], [ghc])
 
 # Set this to YES for a released version, otherwise NO
 : ${RELEASE=NO}
@@ -89,6 +89,11 @@ AC_ARG_WITH([ghc],
   fi
   WithGhc="$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"
-  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
   if test $GhcCanonVersion -ge 613; then ghc_ge_613=YES; else ghc_ge_613=NO; fi
-  AC_SUBST(ghc_ge_6102)dnl
-  AC_SUBST(ghc_ge_611)dnl
   AC_SUBST(ghc_ge_613)dnl
+
+  BOOTSTRAPPING_GHC_INFO_FIELD([CC_STAGE0],[C compiler command],['$(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([$GhcVersion],[-lt],[6.10],
-    [AC_MSG_ERROR([GHC version 6.10 or later is required to compile GHC.])])dnl
+  FP_COMPARE_VERSIONS([$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
@@ -175,40 +180,8 @@ 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)
-
-dnl Allow to specify gmp options to the toplevel configure script
-dnl so they can be properly passed to sub-builds.
-
-AC_ARG_WITH([gmp-includes],
-  [AC_HELP_STRING([--with-gmp-includes],
-    [directory containing gmp.h])],
-    [GMP_INCLUDE_DIRS=$withval])
-
-AC_ARG_WITH([gmp-libraries],
-  [AC_HELP_STRING([--with-gmp-libraries],
-    [directory containing gmp library])],
-    [GMP_LIB_DIRS=$withval])
-
-AC_SUBST(GMP_INCLUDE_DIRS)
-AC_SUBST(GMP_LIB_DIRS)
+FP_ICONV
+FP_GMP
 
 dnl--------------------------------------------------------------------
 dnl * Choose host(/target/build) platform
@@ -232,177 +205,37 @@ AC_CANONICAL_BUILD
 AC_CANONICAL_HOST
 AC_CANONICAL_TARGET
 
-# If no argument was given for a configuration variable, then discard
-# the guessed canonical system and use the configuration of the
-# bootstrapping ghc. If an argument was given, map it from gnu format
-# to ghc format.
-#
-# For why we do it this way, see: #3637, #1717, #2951
-
-if test "$build_alias" = ""
-then
-    if test "${WithGhc}" != ""
-    then
-        build=$bootstrap_target
-        echo "Build platform inferred as: $build"
-    else
-        echo "Can't work out build platform"
-        exit 1
-    fi
-
-    BuildArch=`echo "$build" | sed 's/-.*//'`
-    BuildVendor=`echo "$build" | sed -e 's/.*-\(.*\)-.*/\1/'`
-    BuildOS=`echo "$build" | sed 's/.*-//'`
-else
-    GHC_CONVERT_CPU([$build_cpu], [BuildArch])
-    GHC_CONVERT_VENDOR([$build_vendor], [BuildVendor])
-    GHC_CONVERT_OS([$build_os], [BuildOS])
-fi
+FPTOOLS_SET_PLATFORM_VARS
 
-if test "$host_alias" = ""
+# Verify that the installed (bootstrap) GHC is capable of generating
+# code for the requested build platform.
+if test "$BootingFromHc" = "NO"
 then
-    if test "${WithGhc}" != ""
+    if test "$BuildPlatform" != "$bootstrap_target"
     then
-        host=$bootstrap_target
-        echo "Host platform inferred as: $host"
-    else
-        echo "Can't work out host platform"
+        echo "This GHC (${WithGhc}) does not generate code for the build platform"
+        echo "   GHC target platform    : $bootstrap_target"
+        echo "   Desired build platform : $BuildPlatform"
         exit 1
     fi
-
-    HostArch=`echo "$host" | sed 's/-.*//'`
-    HostVendor=`echo "$host" | sed -e 's/.*-\(.*\)-.*/\1/'`
-    HostOS=`echo "$host" | sed 's/.*-//'`
-else
-    GHC_CONVERT_CPU([$host_cpu], [HostArch])
-    GHC_CONVERT_VENDOR([$host_vendor], [HostVendor])
-    GHC_CONVERT_OS([$host_os], [HostOS])
 fi
 
-if test "$target_alias" = ""
-then
-    if test "${WithGhc}" != ""
-    then
-        target=$bootstrap_target
-        echo "Target platform inferred as: $target"
-    else
-        echo "Can't work out target platform"
-        exit 1
-    fi
+# Testing if we shall enable shared libs support on Solaris.
+# Anything older than SunOS 5.11 aka Solaris 11 (Express) is broken.
 
-    TargetArch=`echo "$target" | sed 's/-.*//'`
-    TargetVendor=`echo "$target" | sed -e 's/.*-\(.*\)-.*/\1/'`
-    TargetOS=`echo "$target" | sed 's/.*-//'`
-else
-    GHC_CONVERT_CPU([$target_cpu], [TargetArch])
-    GHC_CONVERT_VENDOR([$target_vendor], [TargetVendor])
-    GHC_CONVERT_OS([$target_os], [TargetOS])
-fi
+SOLARIS_BROKEN_SHLD=NO
 
-exeext=''
-soext='.so'
 case $host in
-*-unknown-cygwin32)
-    AC_MSG_WARN([GHC does not support the Cygwin target at the moment])
-    AC_MSG_WARN([I'm assuming you wanted to build for i386-unknown-mingw32])
-    exit 1
-    ;;
-*-unknown-mingw32)
-    exeext='.exe'
-    soext='.dll'
-    ;;
-i386-apple-darwin|powerpc-apple-darwin)
-    soext='.dylib'
-    ;;
-x86_64-apple-darwin)
-    soext='.dylib'
-    ;;
+     i386-*-solaris2)
+     # here we go with the test
+     MINOR=`uname -r|cut -d '.' -f 2-`
+     if test "$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)
-        ;;
-    *)
-        echo "Unknown arch $1"
-        exit 1
-        ;;
-    esac
-}
-
-checkVendor() {
-    case $1 in
-    dec|unknown|hp|apple|next|sun|sgi|ibm)
-        ;;
-    *)
-        echo "Unknown vendor $1"
-        exit 1
-        ;;
-    esac
-}
-
-checkOS() {
-    case $1 in
-    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 '$1'"
-        exit 1
-        ;;
-    esac
-}
-
-BuildPlatform="$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 "$BuildVendor"   | sed -e 's/\./_/g' -e 's/-/_/g'`
-BuildOS_CPP=`      echo "$BuildOS"       | sed -e 's/\./_/g' -e 's/-/_/g'`
-
-checkArch "$BuildArch"
-checkVendor "$BuildVendor"
-checkOS "$BuildOS"
-
-HostPlatform="$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 "$HostVendor"   | sed -e 's/\./_/g' -e 's/-/_/g'`
-HostOS_CPP=`      echo "$HostOS"       | sed -e 's/\./_/g' -e 's/-/_/g'`
-
-checkArch "$HostArch"
-checkVendor "$HostVendor"
-checkOS "$HostOS"
-
-TargetPlatform="$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 "$TargetVendor"   | sed -e 's/\./_/g' -e 's/-/_/g'`
-TargetOS_CPP=`      echo "$TargetOS"       | sed -e 's/\./_/g' -e 's/-/_/g'`
-
-checkArch "$TargetArch"
-checkVendor "$TargetVendor"
-checkOS "$TargetOS"
-
-AC_SUBST(BuildPlatform)
-AC_SUBST(HostPlatform)
-AC_SUBST(TargetPlatform)
-AC_SUBST(HostPlatform_CPP)
-AC_SUBST(BuildPlatform_CPP)
-AC_SUBST(TargetPlatform_CPP)
-
-AC_SUBST(HostArch_CPP)
-AC_SUBST(BuildArch_CPP)
-AC_SUBST(TargetArch_CPP)
-
-AC_SUBST(HostOS_CPP)
-AC_SUBST(BuildOS_CPP)
-AC_SUBST(TargetOS_CPP)
-
-AC_SUBST(HostVendor_CPP)
-AC_SUBST(BuildVendor_CPP)
-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],
@@ -413,41 +246,47 @@ 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
-        test -d inplace || mkdir inplace
         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    &&
@@ -475,12 +314,30 @@ then
     fi
 fi
 
+XCODE_VERSION()
+
+SplitObjsBroken=NO
+if test "$TargetOS_CPP" = "darwin"
+then
+    # Split objects is broken (#4013) with XCode < 3.2
+    if test "$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
+AC_SUBST([SplitObjsBroken])
+
 dnl ** Which gcc to use?
 dnl --------------------------------------------------------------
-FP_ARG_WITH_PATH_GNU_PROG([CC], [gcc])
-export CC
-WhatGccIsCalled="$CC"
-AC_SUBST(WhatGccIsCalled)
+FIND_GCC()
 
 dnl ** Which ld to use?
 dnl --------------------------------------------------------------
@@ -533,26 +390,22 @@ 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...)
@@ -565,13 +418,13 @@ 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_GCC_VERSION
 
-FPTOOLS_SET_C_LD_FLAGS([target],[CFLAGS],[LDFLAGS])
-FPTOOLS_SET_C_LD_FLAGS([build],[CONF_CC_OPTS_STAGE0],[CONF_LD_OPTS_STAGE0])
-FPTOOLS_SET_C_LD_FLAGS([target],[CONF_CC_OPTS_STAGE1],[CONF_LD_OPTS_STAGE1])
+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_LD_OPTS_STAGE2])
+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
 
@@ -581,9 +434,22 @@ AC_PROG_CPP
 AC_SUBST(CONF_CC_OPTS_STAGE0)
 AC_SUBST(CONF_CC_OPTS_STAGE1)
 AC_SUBST(CONF_CC_OPTS_STAGE2)
-AC_SUBST(CONF_LD_OPTS_STAGE0)
-AC_SUBST(CONF_LD_OPTS_STAGE1)
-AC_SUBST(CONF_LD_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 ** Set up the variables for the platform in the settings file.
+dnl May need to use gcc to find platform details.
+dnl --------------------------------------------------------------
+FPTOOLS_SET_HASKELL_PLATFORM_VARS
+
+FP_SETTINGS
 
 dnl ** figure out how to do context diffs
 FP_PROG_CONTEXT_DIFF
@@ -600,7 +466,6 @@ 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
@@ -625,7 +490,7 @@ 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-$TargetVendor_CPP" == "xdarwin-apple"; then
+  if test "x$TargetOS_CPP-$TargetVendor_CPP" == "xdarwin-apple" -o "x$TargetOS_CPP-$TargetVendor_CPP" == "xsolaris2-unknown"; then
     HaveDtrace=YES
   fi
 fi
@@ -646,8 +511,6 @@ FP_CHECK_DOCBOOK_DTD
 FP_DOCBOOK_XSL
 FP_PROG_DBLATEX
 
-FP_PROG_HSTAGS
-
 dnl ** check for ghc-pkg command
 FP_PROG_GHC_PKG
 
@@ -800,7 +663,7 @@ 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)
+AC_CHECK_LIB(bfd,    bfd_uncompress_section_contents)
 
 dnl ################################################################
 dnl Check for libraries
@@ -838,37 +701,10 @@ 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
+FP_PROG_LD_NO_COMPACT_UNWIND
 
-dnl ** check for Apple-style dead-stripping support
-dnl    (.subsections-via-symbols assembler directive)
-
-
-AC_MSG_CHECKING(for .subsections_via_symbols)
-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)])
-
-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="$CFLAGS"
-CFLAGS=
-AC_MSG_CHECKING(for GNU non-executable stack support)
-AC_COMPILE_IFELSE(
-    [AC_LANG_PROGRAM([__asm__ (".section .note.GNU-stack,\"\",@progbits");], [0])],
-    [AC_MSG_RESULT(yes)
-     AC_DEFINE([HAVE_GNU_NONEXEC_STACK],[1],
-               [Define to 1 if GNU non-executable stack notes are supported.])
-    ],
-    [AC_MSG_RESULT(no)])
-CFLAGS="$CFLAGS2"
+FP_VISIBILITY_HIDDEN
 
 dnl ** check for librt
 AC_CHECK_LIB(rt, clock_gettime)
@@ -941,7 +777,7 @@ AC_SUBST(BUILD_DOCBOOK_PS)
 AC_SUBST(BUILD_DOCBOOK_PDF)
 
 LIBRARY_VERSION(base)
-LIBRARY_VERSION(Cabal)
+LIBRARY_VERSION(Cabal, Cabal/Cabal)
 LIBRARY_VERSION(ghc-prim)
 LIBRARY_ghc_VERSION="$ProjectVersion"
 AC_SUBST(LIBRARY_ghc_VERSION)
@@ -950,7 +786,7 @@ 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 utils/runghc/runghc.cabal ghc.spec extra-gcc-opts docs/users_guide/ug-book.xml docs/users_guide/ug-ent.xml docs/index.html libraries/prologue.txt distrib/ghc.iss distrib/configure.ac distrib/MacOS/installer-scripts/create-links])
+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