Load plugins in interactive session
[ghc.git] / aclocal.m4
index c5fdd1e..87b7e85 100644 (file)
@@ -217,7 +217,7 @@ AC_DEFUN([FPTOOLS_SET_HASKELL_PLATFORM_VARS],
         mipsel)
             test -z "[$]2" || eval "[$]2=ArchMipsel"
             ;;
-        hppa|hppa1_1|ia64|m68k|rs6000|s390|s390x|sh4|vax)
+        hppa|hppa1_1|ia64|m68k|nios2|rs6000|s390|s390x|sh4|vax)
             test -z "[$]2" || eval "[$]2=ArchUnknown"
             ;;
         *)
@@ -242,7 +242,7 @@ AC_DEFUN([FPTOOLS_SET_HASKELL_PLATFORM_VARS],
         linux|linux-android)
             test -z "[$]2" || eval "[$]2=OSLinux"
             ;;
-        darwin|ios)
+        darwin|ios|watchos|tvos)
             test -z "[$]2" || eval "[$]2=OSDarwin"
             ;;
         solaris2)
@@ -272,12 +272,15 @@ AC_DEFUN([FPTOOLS_SET_HASKELL_PLATFORM_VARS],
         nto-qnx)
             test -z "[$]2" || eval "[$]2=OSQNXNTO"
             ;;
-        dragonfly|hpux|linuxaout|freebsd2|gnu|nextstep2|nextstep3|sunos4|ultrix)
+        dragonfly|hpux|linuxaout|freebsd2|nextstep2|nextstep3|sunos4|ultrix)
             test -z "[$]2" || eval "[$]2=OSUnknown"
             ;;
         aix)
             test -z "[$]2" || eval "[$]2=OSAIX"
             ;;
+        gnu)
+            test -z "[$]2" || eval "[$]2=OSHurd"
+            ;;
         *)
             echo "Unknown OS '[$]1'"
             exit 1
@@ -467,15 +470,15 @@ AC_DEFUN([FP_SETTINGS],
     if test "$windows" = YES -a "$EnableDistroToolchain" = "NO"
     then
         mingw_bin_prefix=mingw/bin/
-        SettingsCCompilerCommand="\$topdir/../${mingw_bin_prefix}gcc.exe"
-        SettingsHaskellCPPCommand="\$topdir/../${mingw_bin_prefix}gcc.exe"
+       SettingsCCompilerCommand="\$tooldir/${mingw_bin_prefix}gcc.exe"
+       SettingsHaskellCPPCommand="\$tooldir/${mingw_bin_prefix}gcc.exe"
         SettingsHaskellCPPFlags="$HaskellCPPArgs"
-        SettingsLdCommand="\$topdir/../${mingw_bin_prefix}ld.exe"
-        SettingsArCommand="\$topdir/../${mingw_bin_prefix}ar.exe"
-        SettingsRanlibCommand="\$topdir/../${mingw_bin_prefix}ranlib.exe"
-        SettingsPerlCommand='$topdir/../perl/perl.exe'
-        SettingsDllWrapCommand="\$topdir/../${mingw_bin_prefix}dllwrap.exe"
-        SettingsWindresCommand="\$topdir/../${mingw_bin_prefix}windres.exe"
+       SettingsLdCommand="\$tooldir/${mingw_bin_prefix}ld.exe"
+       SettingsArCommand="\$tooldir/${mingw_bin_prefix}ar.exe"
+       SettingsRanlibCommand="\$tooldir/${mingw_bin_prefix}ranlib.exe"
+       SettingsPerlCommand='$tooldir/perl/perl.exe'
+       SettingsDllWrapCommand="\$tooldir/${mingw_bin_prefix}dllwrap.exe"
+       SettingsWindresCommand="\$tooldir/${mingw_bin_prefix}windres.exe"
         SettingsTouchCommand='$topdir/bin/touchy.exe'
     elif test "$EnableDistroToolchain" = "YES"
     then
@@ -648,6 +651,14 @@ AC_DEFUN([FPTOOLS_SET_C_LD_FLAGS],
         $3="$$3 -D_HPUX_SOURCE"
         $5="$$5 -D_HPUX_SOURCE"
         ;;
+
+    arm*freebsd*)
+        # On arm/freebsd, tell gcc to generate Arm
+        # instructions (ie not Thumb).
+        $2="$$2 -marm"
+        $3="$$3 -Wl,-z,noexecstack"
+        $4="$$4 -z noexecstack"
+        ;;
     arm*linux*)
         # On arm/linux and arm/android, tell gcc to generate Arm
         # instructions (ie not Thumb).
@@ -656,6 +667,10 @@ AC_DEFUN([FPTOOLS_SET_C_LD_FLAGS],
         $4="$$4 -z noexecstack"
         ;;
 
+    aarch64*freebsd*)
+        $3="$$3 -Wl,-z,noexecstack"
+        $4="$$4 -z noexecstack"
+        ;;
     aarch64*linux*)
         $3="$$3 -Wl,-z,noexecstack"
         $4="$$4 -z noexecstack"
@@ -858,8 +873,12 @@ char **argv;
 esac]);
 AC_SUBST([LeadingUnderscore], [`echo $fptools_cv_leading_underscore | sed 'y/yesno/YESNO/'`])
 if test x"$fptools_cv_leading_underscore" = xyes; then
+   AC_SUBST([CabalLeadingUnderscore],[True])
    AC_DEFINE([LEADING_UNDERSCORE], [1], [Define to 1 if C symbols have a leading underscore added by the compiler.])
-fi])# FP_LEADING_UNDERSCORE
+else
+   AC_SUBST([CabalLeadingUnderscore],[False])
+fi
+])# FP_LEADING_UNDERSCORE
 
 
 # FP_COMPARE_VERSIONS(VERSION1, TEST, VERSION2, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
@@ -1149,11 +1168,15 @@ if test $fp_prog_ar_is_gnu = yes; then
   fp_cv_prog_ar_args="q"
 else
   touch conftest.dummy
-  for fp_var in clqsZ clqs cqs clq cq ; do
+  for fp_var in qclsZ qcls qcs qcl qc ; do
      rm -f conftest.a
-     if "$fp_prog_ar" $fp_var conftest.a conftest.dummy > /dev/null 2> /dev/null; then
-        fp_cv_prog_ar_args=$fp_var
-        break
+     if "$fp_prog_ar" $fp_var conftest.a conftest.dummy > /dev/null 2> /dev/null ; then
+       # Also check that a result was created; it seems some llvm-ar versions
+       # exit with code zero even if they fail to parse the command line.
+       if test -f conftest.a ; then
+         fp_cv_prog_ar_args=$fp_var
+         break
+       fi
      fi
   done
   rm -f conftest*
@@ -1229,15 +1252,18 @@ if test -z "$CC"
 then
   AC_MSG_ERROR([gcc is required])
 fi
+GccLT46=NO
 AC_CACHE_CHECK([version of gcc], [fp_cv_gcc_version],
 [
     # Be sure only to look at the first occurrence of the "version " string;
     # Some Apple compilers emit multiple messages containing this string.
     fp_cv_gcc_version="`$CC -v 2>&1 | sed -n -e '1,/version /s/.*version [[^0-9]]*\([[0-9.]]*\).*/\1/p'`"
-    FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-lt], [4.7],
-                        [AC_MSG_ERROR([Need at least gcc version 4.7])])
+    FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-lt], [4.4],
+                        [AC_MSG_ERROR([Need at least gcc version 4.4 (4.7+ recommended)])])
+    FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-lt], [4.6], GccLT46=YES)
 ])
 AC_SUBST([GccVersion], [$fp_cv_gcc_version])
+AC_SUBST(GccLT46)
 ])# FP_GCC_VERSION
 
 dnl Check to see if the C compiler is clang or llvm-gcc
@@ -1280,7 +1306,7 @@ AC_DEFUN([FP_GCC_SUPPORTS_NO_PIE],
    AC_MSG_CHECKING([whether GCC supports -no-pie])
    echo 'int main() { return 0; }' > conftest.c
    # Some GCC versions only warn when passed an unrecognized flag.
-   if $CC -no-pie -x c /dev/null -dM -E > conftest.txt 2>&1 && ! grep -i unrecognized conftest.txt > /dev/null 2>&1; then
+   if $CC -no-pie -Werror -x c /dev/null -dM -E > conftest.txt 2>&1 && ! grep -i unrecognized conftest.txt > /dev/null 2>&1; then
        CONF_GCC_SUPPORTS_NO_PIE=YES
        AC_MSG_RESULT([yes])
    else
@@ -1520,7 +1546,7 @@ if test "$RELEASE" = "NO"; then
 fi
 
     AC_MSG_CHECKING([for GHC Git commit id])
-    if test -d .git; then
+    if test -e .git; then
         git_commit_id=`git rev-parse HEAD`
         if test -n "$git_commit_id" 2>&1 >/dev/null; then true; else
             AC_MSG_ERROR([failed to detect revision: check that git is in your path])
@@ -1840,6 +1866,9 @@ case "$1" in
   mips*)
     $2="mips"
     ;;
+  nios2)
+    $2="nios2"
+    ;;
   powerpc64le*)
     $2="powerpc64le"
     ;;
@@ -1885,6 +1914,10 @@ case "$1" in
 # converts the canonicalized target into someting llvm can understand
 AC_DEFUN([GHC_LLVM_TARGET], [
   case "$2-$3" in
+    *-freebsd*-gnueabihf)
+      llvm_target_vendor="unknown"
+      llvm_target_os="freebsd-gnueabihf"
+      ;;
     hardfloat-*eabi)
       llvm_target_vendor="unknown"
       llvm_target_os="$3""hf"
@@ -1936,6 +1969,9 @@ AC_DEFUN([GHC_CONVERT_VENDOR],[
 # converts os from gnu to ghc naming, and assigns the result to $target_var
 AC_DEFUN([GHC_CONVERT_OS],[
     case "$1" in
+      gnu*) # e.g. i686-unknown-gnu0.9
+        $3="gnu"
+        ;;
       # watchos and tvos are ios variants as of May 2017.
       ios|watchos|tvos)
         $3="ios"
@@ -1946,16 +1982,25 @@ AC_DEFUN([GHC_CONVERT_OS],[
       linux-*|linux)
         $3="linux"
         ;;
+      openbsd*)
+        $3="openbsd"
+        ;;
       # As far as I'm aware, none of these have relevant variants
-      freebsd|netbsd|openbsd|dragonfly|hpux|linuxaout|kfreebsdgnu|freebsd2|solaris2|mingw32|darwin|gnu|nextstep2|nextstep3|sunos4|ultrix|haiku)
+      freebsd|netbsd|dragonfly|hpux|linuxaout|kfreebsdgnu|freebsd2|mingw32|darwin|nextstep2|nextstep3|sunos4|ultrix|haiku)
         $3="$1"
         ;;
+      msys)
+        AC_MSG_ERROR([Building GHC using the msys toolchain is not supported; please use mingw instead. Perhaps you need to set 'MSYSTEM=MINGW64 or MINGW32?'])
+        ;;
       aix*) # e.g. powerpc-ibm-aix7.1.3.0
         $3="aix"
         ;;
       darwin*) # e.g. aarch64-apple-darwin14
         $3="darwin"
         ;;
+      solaris2*)
+        $3="solaris2"
+        ;;
       freebsd*) # like i686-gentoo-freebsd7
                 #      i686-gentoo-freebsd8
                 #      i686-gentoo-freebsd8.2
@@ -2239,6 +2284,7 @@ $2=$HS_CPP_ARGS
 # ----------------------
 # whether to use libbfd for debugging RTS
 AC_DEFUN([FP_BFD_SUPPORT], [
+    AC_SUBST([CabalHaveLibbfd], [False])
     AC_ARG_ENABLE(bfd-debug,
         [AC_HELP_STRING([--enable-bfd-debug],
               [Enable symbol resolution for -debug rts ('+RTS -Di') via binutils' libbfd [default=no]])],
@@ -2276,7 +2322,7 @@ AC_DEFUN([FP_BFD_SUPPORT], [
                                     bfd_get_symbol_info(abfd,symbol_table[0],&info);
                                 }
                         ],
-                        [],dnl bfd seems to work
+                        [AC_SUBST([CabalHaveLibbfd], [True])],dnl bfd seems to work
                         [AC_MSG_ERROR([can't use 'bfd' library])])
             LIBS="$save_LIBS"
         ]
@@ -2325,6 +2371,7 @@ AC_DEFUN([FIND_LD],[
         # Make sure the user didn't specify LD manually.
         if test "z$LD" != "z"; then
             AC_CHECK_TARGET_TOOL([LD], [ld])
+            LD_NO_GOLD=$LD
             return
         fi
 
@@ -2337,10 +2384,16 @@ AC_DEFUN([FIND_LD],[
             if test "x$TmpLd" = "x"; then continue; fi
 
             out=`$TmpLd --version`
+            LD_NO_GOLD=$TmpLd
             case $out in
-              "GNU ld"*)   FP_CC_LINKER_FLAG_TRY(bfd, $2) ;;
-              "GNU gold"*) FP_CC_LINKER_FLAG_TRY(gold, $2) ;;
-              "LLD"*)      FP_CC_LINKER_FLAG_TRY(lld, $2) ;;
+              "GNU ld"*)
+                   FP_CC_LINKER_FLAG_TRY(bfd, $2) ;;
+              "GNU gold"*)
+                   FP_CC_LINKER_FLAG_TRY(gold, $2)
+                   LD_NO_GOLD=ld
+                   ;;
+              "LLD"*)
+                   FP_CC_LINKER_FLAG_TRY(lld, $2) ;;
               *) AC_MSG_NOTICE([unknown linker version $out]) ;;
             esac
             if test "z$$2" = "z"; then
@@ -2357,12 +2410,16 @@ AC_DEFUN([FIND_LD],[
 
         # Fallback
         AC_CHECK_TARGET_TOOL([LD], [ld])
+        # This isn't entirely safe since $LD may have been discovered to be
+        $ ld.gold, but what else can we do?
+        if test "x$LD_NO_GOLD" = "x"; then LD_NO_GOLD=$LD; fi
     }
 
     if test "x$enable_ld_override" = "xyes"; then
         find_ld
     else
         AC_CHECK_TARGET_TOOL([LD], [ld])
+        if test "x$LD_NO_GOLD" = "x"; then LD_NO_GOLD=$LD; fi
     fi
 
     CHECK_LD_COPY_BUG([$1])