libstdc++-v3/configure.in

   1 # Process this file with autoconf to produce a configure script, like so:
   2 # aclocal, autoconf, autoheader, automake
   3
   4 AC_PREREQ(2.13)
   5 AC_INIT(src/complex.cc)
   6 AC_CONFIG_AUX_DIR(..)
   7
   8 # Gets and sets build, host, target, *_vendor, *_cpu, *_os, etc.
   9 AC_CANONICAL_SYSTEM
  10
  11 # We use these options to decide which functions to include.
  12 AC_ARG_WITH(target-subdir,
  13 [  --with-target-subdir=SUBDIR
  14                            configuring in a subdirectory])
  15 AC_ARG_WITH(cross-host,
  16 [  --with-cross-host=HOST  configuring with a cross compiler])
  17
  18 GLIBCPP_CONFIGURE(.)
  19 AC_LIBTOOL_DLOPEN
  20 AM_PROG_LIBTOOL
  21 GLIBCPP_CHECK_GNU_MAKE
  22   if test "x$_cv_gnu_make_command" = "x"; then
  23     AC_MSG_ERROR([GNU make not found. Please install it or correct your path.])
  24   fi
  25 AM_CONFIG_HEADER(config.h)
  26
  27 # Check for c++ or library specific bits that don't require linking.
  28 GLIBCPP_CHECK_COMPILER_VERSION
  29 GLIBCPP_CHECK_CPU
  30
  31 # Enable all the crazy c++ stuff.
  32 GLIBCPP_ENABLE_DEBUG
  33 GLIBCPP_ENABLE_CSTDIO
  34 GLIBCPP_ENABLE_LONG_LONG(yes)
  35 GLIBCPP_ENABLE_SHADOW(no)
  36 GLIBCPP_ENABLE_THREADS
  37 #GLIBCPP_ENABLE_RELIBGCC([../..])
  38 GLIBCPP_ENABLE_CXX_FLAGS([none])
  39
  40
  41 if test -n "$with_cross_host"; then
  42
  43   # We are being configured with a cross compiler.  AC_REPLACE_FUNCS
  44   # may not work correctly, because the compiler may not be able to
  45   # link executables.
  46
  47   xcompiling=1
  48   NATIVE=no
  49   # If Canadian cross, then don't pick up tools from the build
  50   # directory.
  51   if test "$build" != "$with_cross_host"; then
  52     CANADIAN=yes
  53     NULL_TARGET=yes
  54   else
  55     CANADIAN=no
  56     NULL_TARGET=no
  57   fi
  58
  59   case "$target_alias" in
  60     *-wince-*)
  61         # Configure for Microsoft Windows CE, or whatever they are
  62         # currently calling it.
  63         AC_DEFINE(HAVE_FLOAT_H)
  64
  65         AC_DEFINE(HAVE__FINITE)
  66         AC_DEFINE(HAVE__ISNAN)
  67         AC_DEFINE(HAVE__COPYSIGN)
  68         AC_DEFINE(HAVE__FPCLASS)
  69         AC_DEFINE(HAVE_MODF)
  70
  71         ctype_include_dir="config/wince"
  72         AC_SUBST(ctype_include_dir)
  73
  74         AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
  75
  76         AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
  77         AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
  78         ;;
  79     *)
  80         # We assume newlib.  This lets us hard-code the functions we know
  81         # we'll have.
  82         AC_DEFINE(HAVE_FINITE)
  83         AC_DEFINE(HAVE_ISNAN)
  84         AC_DEFINE(HAVE_ISNANF)
  85         AC_DEFINE(HAVE_ISINF)
  86         AC_DEFINE(HAVE_ISINFF)
  87
  88         ctype_include_dir="config/newlib"
  89         AC_SUBST(ctype_include_dir)
  90
  91         AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
  92
  93         AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
  94         AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
  95         # need to ceck for faster f versions of math functions, ie sinf?
  96         ;;
  97   esac
  98 else
  99
 100   # We are being configured natively. We can do more elaborate tests
 101   # that include AC_TRY_COMPILE now, as the linker is assumed to be
 102   # working.
 103
 104   xcompiling=0
 105   NATIVE=yes
 106   CANADIAN=no
 107   NULL_TARGET=no
 108
 109   # Check for available headers.
 110   AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
 111   machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h])
 112
 113   GLIBCPP_CHECK_COMPILER_FEATURES
 114   GLIBCPP_CHECK_LINKER_FEATURES
 115   GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
 116   GLIBCPP_CHECK_MATH_SUPPORT
 117   GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
 118   GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
 119   GLIBCPP_CHECK_WCHAR_T_SUPPORT
 120   GLIBCPP_CHECK_CTYPE
 121
 122   AC_FUNC_MMAP
 123 fi
 124
 125 AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
 126 AM_CONDITIONAL(NULL_TARGET, test "$NULL_TARGET" = yes)
 127 AM_CONDITIONAL(NATIVE, test "$NATIVE" = yes || test "$NULL_TARGET" = yes)
 128 AM_CONDITIONAL(USE_LIBDIR, test -z "$with_cross_host")
 129
 130 AC_LC_MESSAGES
 131
 132
 133 if test "${multilib}" = "yes"; then
 134   multilib_arg="--enable-multilib"
 135 else
 136   multilib_arg=
 137 fi
 138
 139
 140 # Generate the various Makefiles, include files, and scripts.
 141
 142 # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am
 143 # so that multilib installs will end up installed in the correct
 144 # place. To work around this not being passed down from config-ml.in
 145 # -> top_srcdir/Makefile.am -> top_srcdir/src/Makefile.am, manually
 146 # append it here.
 147
 148 AC_OUTPUT(mkcheck Makefile src/Makefile math/Makefile libio/Makefile,
 149 [if test -n "$CONFIG_FILES"; then
 150   ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
 151   grep '^MULTISUBDIR =' Makefile >> src/Makefile
 152 fi],
 153 srcdir=${srcdir}
 154 host=${host}
 155 target=${target}
 156 with_multisubdir=${with_multisubdir}
 157 ac_configure_args="${multilib_arg} ${ac_configure_args}"
 158 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
 159 glibcpp_basedir=${glibcpp_basedir}
 160 CC="${CC}"
 161 CXX="${CXX}"
 162 )
 163
 164
 165 blddir=`pwd`
 166 # Generate bits/c++config.h
 167 # NB: This must be the first generated file as others include it. . .
 168 AC_OUTPUT_COMMANDS([$srcdir/mkc++config $blddir $srcdir])
 169
 170 # Generate bits/std_limits.h and src/limitsMEMBERS.cc
 171 AC_OUTPUT_COMMANDS([$srcdir/mknumeric_limits $blddir $srcdir $xcompiling])
 172
 173
 174 # Sanity checking & User-visible messages.
 175 # Checks down here, otherwise they get scrolled off before
 176 # the user will notice.
 177 if test "$enable_namespaces" = "yes" && test "$enable_libgcc_rebuild" = "no"
 178 then
 179   AC_MSG_WARN([libgcc.a will not match mangled symbols unless it is rebuilt])
 180 fi
 181 if test "$enable_namespaces" = "no" && test "$enable_libgcc_rebuild" != "no"
 182 then
 183   # Other things besides namespaces can make this true as well, but none
 184   # of them are done automatically... yet
 185   AC_MSG_WARN([no point in rebuilding libgcc.a if namespaces aren't used])
 186 fi
 187
 188 # Trying to get more people to read documentation.  Possibly remove
 189 # check and warn all the time. There is no "informational" AC_MSG_
 190 # macro, so these are going to be printed even when --quiet/--silent
 191 # is given.
 192 if test ! -f stamp-sanity-warned; then
 193   touch stamp-sanity-warned
 194   echo ""
 195   echo "Please make certain that you read the installation information here:"
 196   echo "  faster => ${srcdir}/docs/install.html"
 197   echo "  slower => <URL:http://sources.redhat.com/libstdc++/install.html>"
 198   echo ""
 199   echo "and the configuration information here:"
 200   echo "  faster => ${srcdir}/docs/configopts.html"
 201   echo "  slower => <URL:http://sources.redhat.com/libstdc++/configopts.html>"
 202   echo ""
 203   echo "before proceeding with ${_cv_gnu_make_command}."
 204   echo ""
 205 fi
 206
 207