* configure.ac: Fix --enable-languages=all.
[gcc.git] / configure.ac
index f6ab734a18ee57fe726d019d897ab38234c82b44..9bee624ec1c8ffd238207b79e3850d42d160d70d 100644 (file)
@@ -28,6 +28,7 @@ m4_include([ltoptions.m4])
 m4_include([ltsugar.m4])
 m4_include([ltversion.m4])
 m4_include([lt~obsolete.m4])
+m4_include([config/isl.m4])
 m4_include([config/cloog.m4])
 
 AC_INIT(move-if-change)
@@ -132,7 +133,7 @@ build_tools="build-texinfo build-flex build-bison build-m4 build-fixincludes"
 
 # these libraries are used by various programs built for the host environment
 #
-host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libcpp libdecnumber gmp mpfr mpc ppl cloog libelf libiconv"
+host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libcpp libdecnumber gmp mpfr mpc isl cloog libelf libiconv"
 
 # these tools are built for the host environment
 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
@@ -154,6 +155,7 @@ target_libraries="target-libgcc \
                target-libgloss \
                target-newlib \
                target-libgomp \
+               target-libatomic \
                target-libitm \
                target-libstdc++-v3 \
                target-libmudflap \
@@ -483,7 +485,7 @@ if test x$enable_libgomp = x ; then
        ;;
     *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
        ;;
-    *-*-solaris2* | *-*-irix6* | *-*-hpux11*)
+    *-*-solaris2* | *-*-hpux11*)
        ;;
     *-*-darwin* | *-*-aix*)
        ;;
@@ -493,6 +495,22 @@ if test x$enable_libgomp = x ; then
     esac
 fi
 
+# Disable libatomic on unsupported systems.
+if test -d ${srcdir}/libatomic; then
+    if test x$enable_libatomic = x; then
+       AC_MSG_CHECKING([for libatomic support])
+       if (srcdir=${srcdir}/libatomic; \
+               . ${srcdir}/configure.tgt; \
+               test -n "$UNSUPPORTED")
+       then
+           AC_MSG_RESULT([no])
+           noconfigdirs="$noconfigdirs target-libatomic"
+       else
+           AC_MSG_RESULT([yes])
+       fi
+    fi
+fi
+
 # Disable libitm on unsupported systems.
 if test -d ${srcdir}/libitm; then
     if test x$enable_libitm = x; then
@@ -526,6 +544,13 @@ case "${target}" in
     ;;
 esac
 
+# Disable libquadmath for some systems.
+case "${target}" in
+  avr-*-*)
+    noconfigdirs="$noconfigdirs target-libquadmath"
+    ;;
+esac
+
 # Disable libstdc++-v3 for some systems.
 case "${target}" in
   *-*-vxworks*)
@@ -571,7 +596,7 @@ case "${target}" in
     ;;
   m68k-*-*)
     ;;
-  mips-sgi-irix6.* | mips*-*-rtems*)
+  mips*-*-rtems*)
     ;;
   mips*-*-linux*)
     ;;
@@ -687,13 +712,6 @@ case "${target}" in
   rs6000-*-aix*)
     noconfigdirs="$noconfigdirs ${libgcj}"
     ;;
-  mips*-*-irix6*)
-    # Linking libjava exceeds command-line length limits on at least
-    # IRIX 6.2, but not on IRIX 6.5.
-    # Also, boehm-gc won't build on IRIX 6.5, according to Jeffrey Oldham
-    # <oldham@codesourcery.com>
-    noconfigdirs="$noconfigdirs ${libgcj}"
-    ;;
   *-*-lynxos*)
     noconfigdirs="$noconfigdirs ${libgcj}"
     ;; 
@@ -1193,20 +1211,6 @@ case "$have_compiler:$host:$target:$enable_bootstrap" in
     ;;
 esac
 
-# See if we are building gcc with C++.
-AC_ARG_ENABLE(build-with-cxx,
-[AS_HELP_STRING([--enable-build-with-cxx],
-               [build with C++ compiler instead of C compiler])],
-ENABLE_BUILD_WITH_CXX=$enableval,
-ENABLE_BUILD_WITH_CXX=no)
-
-# Build stage1 with C and build stages 2 and 3 with C++.
-AC_ARG_ENABLE(build-poststage1-with-cxx,
-[AS_HELP_STRING([--enable-build-poststage1-with-cxx],
-               [build stages 2 and 3 with C++, not C])],
-ENABLE_BUILD_POSTSTAGE1_WITH_CXX=$enableval,
-ENABLE_BUILD_POSTSTAGE1_WITH_CXX=yes)
-
 # Used for setting $lt_cv_objdir
 _LT_CHECK_OBJDIR
 
@@ -1279,9 +1283,16 @@ if test "x$with_mpfr_lib" != x; then
   gmplibs="-L$with_mpfr_lib $gmplibs"
 fi
 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
-  gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir $gmplibs"
-  gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr -I$$s/mpfr '"$gmpinc"
-  extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir"
+  # MPFR v3.1.0 moved the sources into a src sub-directory.
+  if test -d ${srcdir}/mpfr/src; then
+    gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
+    gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
+    extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
+  else
+    gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir $gmplibs"
+    gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr -I$$s/mpfr '"$gmpinc"
+    extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir"
+  fi
   # Do not test the mpfr version.  Assume that it is sufficient, since
   # it is in the source tree, and the library has not been built yet
   # but it would be included on the link line in the version check below
@@ -1323,6 +1334,7 @@ if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp;
   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
+  extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
   # Do not test the gmp version.  Assume that it is sufficient, since
   # it is in the source tree, and the library has not been built yet
   # but it would be included on the link line in the version check below
@@ -1357,7 +1369,7 @@ if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
     AC_MSG_CHECKING([for the correct version of mpfr.h])
     AC_TRY_COMPILE([#include <gmp.h>
     #include <mpfr.h>],[
-    #if MPFR_VERSION < MPFR_VERSION_NUM(2,3,1)
+    #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
     choke me
     #endif
     ], [AC_TRY_COMPILE([#include <gmp.h>
@@ -1417,7 +1429,7 @@ if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
 # The library versions listed in the error message below should match
 # the HARD-minimums enforced above.
   if test x$have_gmp != xyes; then
-    AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.3.1+ and MPC 0.8.0+.
+    AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
 their locations.  Source code for these libraries can be found at
 their respective hosting sites as well as at
@@ -1435,6 +1447,7 @@ AC_SUBST(gmpinc)
 AC_SUBST(extra_mpfr_configure_flags)
 AC_SUBST(extra_mpc_gmp_configure_flags)
 AC_SUBST(extra_mpc_mpfr_configure_flags)
+AC_SUBST(extra_isl_gmp_configure_flags)
 
 # Allow host libstdc++ to be specified for static linking with PPL.
 AC_ARG_WITH(host-libstdcxx,
@@ -1500,119 +1513,71 @@ AC_ARG_WITH(boot-ldflags,
  fi])
 AC_SUBST(poststage1_ldflags)
 
-# Check for PPL
-ppllibs=
-pplinc=
-pwllib=
-
-AC_ARG_WITH(ppl,
-[AS_HELP_STRING([--with-ppl=PATH],
-               [specify prefix directory for the installed PPL package.
-                Equivalent to --with-ppl-include=PATH/include
-                plus --with-ppl-lib=PATH/lib])])
-AC_ARG_WITH(ppl-include,
-[AS_HELP_STRING([--with-ppl-include=PATH],
-               [specify directory for installed PPL include files])])
-AC_ARG_WITH(ppl-lib,
-[AS_HELP_STRING([--with-ppl-lib=PATH],
-               [specify directory for the installed PPL library])])
-
-AC_ARG_ENABLE(ppl-version-check,
-[AS_HELP_STRING([--disable-ppl-version-check],
-               [disable check for PPL version])])
-
-case $with_ppl in
-  yes | no | "")
-    ;;
-  *)
-    ppllibs="-L$with_ppl/lib"
-    pplinc="-I$with_ppl/include $pplinc"
-    if test -d "$with_ppl/lib" && test -d "$with_ppl/include"; then
-      with_ppl=yes
-    else
-      AC_MSG_ERROR([cannot find directories "$with_ppl/lib" or "$with_ppl/include"])
-    fi
-    ;;
-esac
-
-if test x"$with_ppl_include" != x; then
-  pplinc="-I$with_ppl_include $pplinc"
-  with_ppl=yes
-fi
-
-if test "x$with_ppl_lib" != x; then
-  ppllibs="-L$with_ppl_lib"
-  with_ppl=yes
-fi
-
-if test x"$with_ppl$with_ppl_include$with_ppl_lib" = x && test -d ${srcdir}/ppl; then
-  if test x"$enable_watchdog" = xyes; then
-    pwllib="-lpwl"
+# GCC GRAPHITE dependences, ISL and CLOOG which in turn requires ISL.
+# Basic setup is inlined here, actual checks are in config/cloog.m4 and
+# config/isl.m4
+
+AC_ARG_WITH(cloog,
+  [AS_HELP_STRING(
+    [--with-cloog=PATH],
+    [Specify prefix directory for the installed CLooG-ISL package.
+     Equivalent to --with-cloog-include=PATH/include
+     plus --with-cloog-lib=PATH/lib])])
+AC_ARG_WITH(isl,
+  [AS_HELP_STRING(
+   [--with-isl=PATH],
+   [Specify prefix directory for the installed ISL package.
+    Equivalent to --with-isl-include=PATH/include
+    plus --with-isl-lib=PATH/lib])])
+
+# Treat either --without-cloog or --without-isl as a request to disable
+# GRAPHITE support and skip all following checks.
+if test "x$with_isl" != "xno" &&
+   test "x$with_cloog" != "xno"; then
+  # Check for ISL
+  dnl Provide configure switches and initialize islinc & isllibs
+  dnl with user input.
+  ISL_INIT_FLAGS
+  dnl The minimal version of ISL required for Graphite.
+  ISL_CHECK_VERSION(0,10)
+  dnl Only execute fail-action, if ISL has been requested.
+  ISL_IF_FAILED([
+    AC_MSG_ERROR([Unable to find a usable ISL.  See config.log for details.])])
+
+  if test "x$gcc_cv_isl" != "xno"; then
+    # Check for CLOOG
+    dnl Provide configure switches and initialize clooginc & clooglibs
+    dnl with user input.
+    CLOOG_INIT_FLAGS
+    dnl The minimal version of CLooG required for Graphite.
+    dnl
+    dnl If we use CLooG-Legacy, the provided version information is
+    dnl ignored.
+    CLOOG_CHECK_VERSION(0,17,0)
+
+    dnl Only execute fail-action, if CLooG has been requested.
+    CLOOG_IF_FAILED([
+      AC_MSG_ERROR([Unable to find a usable CLooG.  See config.log for details.])])
   fi
-  ppllibs='-L$$r/$(HOST_SUBDIR)/ppl/interfaces/C/'"$lt_cv_objdir"' -L$$r/$(HOST_SUBDIR)/ppl/src/'"$lt_cv_objdir"
-  pplinc='-I$$r/$(HOST_SUBDIR)/ppl/src -I$$r/$(HOST_SUBDIR)/ppl/interfaces/C '
-  enable_ppl_version_check=no
-  with_ppl=yes
 fi
 
-if test "x$with_ppl" != xno; then
-  if test "x$pwllib" = x; then
-    saved_LIBS="$LIBS"
-    LIBS="$LIBS $ppllibs -lstdc++ -lm"
-    AC_CHECK_LIB(pwl, PWL_handle_timeout, [pwllib="-lpwl"])
-    LIBS="$saved_LIBS"
-  fi
-
-  ppllibs="$ppllibs -lppl_c -lppl $pwllib -lgmpxx"
-
-  if test "$enable_ppl_version_check" != no; then
-    saved_CFLAGS="$CFLAGS"
-    CFLAGS="$CFLAGS $pplinc $gmpinc"
-    AC_MSG_CHECKING([for version 0.11 (revision 0 or later) of PPL])
-    AC_TRY_COMPILE([#include "ppl_c.h"],[
-    #if PPL_VERSION_MAJOR != 0 || PPL_VERSION_MINOR < 11
-    choke me
-    #endif
-    ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); ppllibs= ; pplinc= ; with_ppl=no ])
-    CFLAGS="$saved_CFLAGS"
-  fi
+# If either the ISL or the CLooG check failed, disable builds of in-tree
+# variants of both
+if test "x$with_isl" = xno ||
+   test "x$with_cloog" = xno ||
+   test "x$gcc_cv_cloog" = xno ||
+   test "x$gcc_cv_isl" = xno; then
+  noconfigdirs="$noconfigdirs cloog isl"
+  islinc=
+  clooginc=
+  clooglibs=
 fi
 
-# Flags needed for PPL
-AC_SUBST(ppllibs)
-AC_SUBST(pplinc)
+AC_SUBST(islinc)
+AC_SUBST(clooglibs)
+AC_SUBST(clooginc)
 
 
-# Check for CLOOG
-
-dnl Provide configure switches and initialize clooginc & clooglibs
-dnl with user input.
-CLOOG_INIT_FLAGS
-if test "x$with_ppl" = "xno"; then
-  dnl Only execute fail-action, if CLooG has been requested.
-  CLOOG_REQUESTED([graphite_requested=yes], [graphite_requested=no])
-  if test "${graphite_requested}" = yes; then
-    AC_MSG_ERROR([Unable to find a usable PPL.  See config.log for details.])
-  fi
-  with_cloog=no
-fi
-if test "x${with_cloog}" = x && test "x${with_cloog_include}" = x \
-  && test "x${with_cloog_lib}" = x && test -d ${srcdir}/cloog; then
-  clooglibs='-L$$r/$(HOST_SUBDIR)/cloog/'"$lt_cv_objdir"' '
-  clooginc='-I$$r/$(HOST_SUBDIR)/cloog/include -I$$s/cloog/include '
-fi
-if test "x$with_cloog" != "xno"; then
-  dnl The minimal version of CLooG required for Graphite.
-  dnl
-  dnl If we use CLooG-Legacy, the provided version information is
-  dnl ignored.
-  CLOOG_CHECK_VERSION(0,16,1)
-
-  dnl Only execute fail-action, if CLooG has been requested.
-  CLOOG_IF_FAILED([
-    AC_MSG_ERROR([Unable to find a usable CLooG.  See config.log for details.])])
-fi
-
 # Check for LTO support.
 AC_ARG_ENABLE(lto,
 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
@@ -1650,7 +1615,7 @@ ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
 ])
 
 
-# By default, C is the only stage 1 language.
+# By default, C and C++ are the only stage 1 languages.
 stage1_languages=,c,
 
 # Target libraries that we bootstrap.
@@ -1688,15 +1653,14 @@ if test -d ${srcdir}/gcc; then
       ;;
   esac
 
-  # If bootstrapping, then using --enable-build-with-cxx or
-  # --enable-build-poststage1-with-cxx requires enabling C++.
-  case ",$enable_languages,:,$ENABLE_BUILD_WITH_CXX,$ENABLE_BUILD_POSTSTAGE1_WITH_CXX,:$enable_bootstrap" in
-    *,c++,*:*:*) ;;
-    *:*,yes,*:yes)
+  # If bootstrapping, C++ must be enabled.
+  case ",$enable_languages,:$enable_bootstrap" in
+    *,c++,*:*) ;;
+    *:yes)
       if test -f ${srcdir}/gcc/cp/config-lang.in; then
         enable_languages="${enable_languages},c++"
       else
-        AC_MSG_ERROR([bootstrapping with --enable-build-with-cxx or --enable-build-poststage1-with-cxx requires c++ sources])
+        AC_MSG_ERROR([bootstrapping requires c++ sources])
       fi
       ;;
   esac
@@ -1791,23 +1755,23 @@ if test -d ${srcdir}/gcc; then
         fi
 
        if test "$language" = "c++"; then
-         if test "$ENABLE_BUILD_WITH_CXX" = "yes" \
-            || test "$ENABLE_BUILD_POSTSTAGE1_WITH_CXX" = "yes"; then
-           boot_language=yes
-         fi
+         boot_language=yes
        fi
 
+        add_this_lang=no
         case ,${enable_languages}, in
           *,${language},*)
-            # Language was explicitly selected; include it.
-            add_this_lang=yes
+            # Language was explicitly selected; include it
+           # unless it is C, which is enabled by default.
+           if test "$language" != "c"; then
+             add_this_lang=yes
+           fi
             ;;
           *,all,*)
             # 'all' was selected, select it if it is a default language
-            add_this_lang=${build_by_default}
-            ;;
-          *)
-            add_this_lang=no
+           if test "$language" != "c"; then
+             add_this_lang=${build_by_default}
+           fi
             ;;
         esac
 
@@ -2128,11 +2092,11 @@ if test "x$CFLAGS_FOR_TARGET" = x; then
   CFLAGS_FOR_TARGET=$CFLAGS
   case " $CFLAGS " in
     *" -O2 "*) ;;
-    *) CFLAGS_FOR_TARGET="-O2 $CFLAGS" ;;
+    *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
   esac
   case " $CFLAGS " in
     *" -g "* | *" -g3 "*) ;;
-    *) CFLAGS_FOR_TARGET="-g $CFLAGS" ;;
+    *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
   esac
 fi
 AC_SUBST(CFLAGS_FOR_TARGET)
@@ -2141,11 +2105,11 @@ if test "x$CXXFLAGS_FOR_TARGET" = x; then
   CXXFLAGS_FOR_TARGET=$CXXFLAGS
   case " $CXXFLAGS " in
     *" -O2 "*) ;;
-    *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS" ;;
+    *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
   esac
   case " $CXXFLAGS " in
     *" -g "* | *" -g3 "*) ;;
-    *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS" ;;
+    *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
   esac
 fi
 AC_SUBST(CXXFLAGS_FOR_TARGET)
@@ -2331,18 +2295,6 @@ case "${enable_target_optspace}:${target}" in
     ;;
 esac
 
-# Default to using --with-stabs for certain targets.
-if test x${with_stabs} = x ; then
-  case "${target}" in
-  mips*-*-irix[[56]]*)
-    ;;
-  mips*-*-*)
-    with_stabs=yes;
-    extra_host_args="${extra_host_args} --with-stabs"
-    ;;
-  esac
-fi
-
 # Some systems (e.g., one of the i386-aix systems the gas testers are
 # using) don't handle "\$" correctly, so don't use it here.
 tooldir='${exec_prefix}'/${target_noncanonical}
@@ -2676,7 +2628,7 @@ changequote(,)
 changequote([,])
 
     case $lib in
-    mpc | mpfr | gmp | ppl | cloog)
+    mpc | mpfr | gmp | cloog)
       # If we're processing --with-$lib, --with-$lib-include or
       # --with-$lib-lib, for one of the libs above, and target is
       # different from host, don't pass the current argument to any
@@ -3193,26 +3145,6 @@ case $build in
     esac ;;
 esac
 
-# This is aimed to mimic bootstrap with a non-GCC compiler to catch problems.
-if test "$GCC" = yes -a "$ENABLE_BUILD_WITH_CXX" != yes; then
-  saved_CFLAGS="$CFLAGS"
-
-  # Pass -fkeep-inline-functions for stage 1 if the GCC version supports it.
-  CFLAGS="$CFLAGS -fkeep-inline-functions"
-  AC_MSG_CHECKING([whether -fkeep-inline-functions is supported])
-  AC_TRY_COMPILE([
-#if (__GNUC__ < 3) \
-    || (__GNUC__ == 3 && (__GNUC_MINOR__ < 3 \
-                         || (__GNUC_MINOR__ == 3 && __GNUC_PATCHLEVEL__ < 1)))
-#error http://gcc.gnu.org/PR29382
-#endif
-    ],,
-    [AC_MSG_RESULT([yes]); stage1_cflags="$stage1_cflags -fkeep-inline-functions"],
-    [AC_MSG_RESULT([no])])
-
-  CFLAGS="$saved_CFLAGS"
-fi
-
 AC_SUBST(stage1_cflags)
 
 # Enable --enable-checking in stage1 of the compiler.
@@ -3242,15 +3174,6 @@ case ${enable_werror} in
 esac
 AC_SUBST(stage2_werror_flag)
 
-# If using ENABLE_BUILD_POSTSTAGE1_WITH_CXX, pass
-# --enable-build-with-cxx after stage1.
-if test "$ENABLE_BUILD_POSTSTAGE1_WITH_CXX" = "yes"; then
-  POSTSTAGE1_CONFIGURE_FLAGS=--enable-build-with-cxx
-else
-  POSTSTAGE1_CONFIGURE_FLAGS=
-fi
-AC_SUBST(POSTSTAGE1_CONFIGURE_FLAGS)
-
 # Specify what files to not compare during bootstrap.
 
 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
@@ -3258,9 +3181,6 @@ case "$target" in
   hppa*64*-*-hpux*) ;;
   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/*" ;;
 esac
-case " $configdirs " in
-*" ppl "*) compare_exclusions="$compare_exclusions | ppl/src/ppl-config.o" ;;
-esac
 AC_SUBST(compare_exclusions)
 
 AC_CONFIG_FILES([Makefile],