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 # Runs configure.host and configure.target. Have to run this before
  19 # the GLIBCPP_ENABLE_* macros below.
  20 GLIBCPP_CONFIGURE(.)
  21
  22 AC_LIBTOOL_DLOPEN
  23 AM_PROG_LIBTOOL
  24 AC_SUBST(enable_shared)
  25 AC_SUBST(enable_static)
  26 GLIBCPP_CHECK_GNU_MAKE
  27   if test "x$_cv_gnu_make_command" = "x"; then
  28     AC_MSG_ERROR([GNU make not found. Please install it or correct your path.])
  29   fi
  30 AM_CONFIG_HEADER(config.h)
  31
  32 # Check for c++ or library specific bits that don't require linking.
  33 GLIBCPP_CHECK_COMPILER_VERSION
  34
  35 # Enable all the crazy c++ stuff.  C_MBCHAR must come early.
  36 GLIBCPP_ENABLE_DEBUG($USE_MAINTAINER_MODE)
  37 GLIBCPP_ENABLE_CSTDIO
  38 GLIBCPP_ENABLE_C_MBCHAR([yes])
  39 GLIBCPP_ENABLE_LONG_LONG([yes])
  40 GLIBCPP_ENABLE_SHADOW([no])
  41 GLIBCPP_ENABLE_THREADS
  42 GLIBCPP_ENABLE_ATOMICITY
  43 GLIBCPP_ENABLE_CXX_FLAGS([none])
  44
  45
  46 if test -n "$with_cross_host"; then
  47
  48   # We are being configured with a cross compiler.  AC_REPLACE_FUNCS
  49   # may not work correctly, because the compiler may not be able to
  50   # link executables.
  51
  52   xcompiling=1
  53   NATIVE=no
  54   # If Canadian cross, then don't pick up tools from the build
  55   # directory.
  56   if test "$build" != "$with_cross_host"; then
  57     CANADIAN=yes
  58     NULL_TARGET=yes
  59   else
  60     CANADIAN=no
  61     NULL_TARGET=no
  62   fi
  63
  64   case "$target_alias" in
  65     *-wince-*)
  66         # Configure for Microsoft Windows CE, or whatever they are
  67         # currently calling it.
  68         AC_DEFINE(HAVE_FLOAT_H)
  69
  70         AC_DEFINE(HAVE__FINITE)
  71         AC_DEFINE(HAVE__ISNAN)
  72         AC_DEFINE(HAVE__COPYSIGN)
  73         AC_DEFINE(HAVE__FPCLASS)
  74         AC_DEFINE(HAVE_MODF)
  75
  76         ctype_include_dir="config/os/wince"
  77         AC_LINK_FILES($ctype_include_dir/bits/ctype_base.h,
  78         include/bits/ctype_base.h)
  79         AC_LINK_FILES($ctype_include_dir/bits/ctype_inline.h, \
  80         include/bits/ctype_inline.h)
  81         AC_LINK_FILES($ctype_include_dir/bits/ctype_noninline.h, \
  82         include/bits/ctype_noninline.h)
  83
  84
  85         AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
  86
  87         AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
  88         AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
  89         ;;
  90     *)
  91         # We assume newlib.  This lets us hard-code the functions we know
  92         # we'll have.
  93         AC_DEFINE(HAVE_FINITE)
  94         AC_DEFINE(HAVE_ISNAN)
  95         AC_DEFINE(HAVE_ISNANF)
  96         AC_DEFINE(HAVE_ISINF)
  97         AC_DEFINE(HAVE_ISINFF)
  98
  99         ctype_include_dir="config/os/newlib"
 100         AC_LINK_FILES($ctype_include_dir/bits/ctype_base.h,
 101         include/bits/ctype_base.h)
 102         AC_LINK_FILES($ctype_include_dir/bits/ctype_inline.h, \
 103         include/bits/ctype_inline.h)
 104         AC_LINK_FILES($ctype_include_dir/bits/ctype_noninline.h, \
 105         include/bits/ctype_noninline.h)
 106
 107         AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
 108
 109         AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
 110         AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
 111         # need to check for faster f versions of math functions, ie sinf?
 112         ;;
 113   esac
 114 else
 115
 116   # We are being configured natively. We can do more elaborate tests
 117   # that include AC_TRY_COMPILE now, as the linker is assumed to be
 118   # working.
 119
 120   xcompiling=0
 121   NATIVE=yes
 122   CANADIAN=no
 123   NULL_TARGET=no
 124
 125   # Check for available headers.
 126   AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
 127   machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h])
 128
 129   GLIBCPP_CHECK_COMPILER_FEATURES
 130   GLIBCPP_CHECK_LINKER_FEATURES
 131   GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
 132   GLIBCPP_CHECK_MATH_SUPPORT
 133   GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
 134   GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
 135   GLIBCPP_CHECK_WCHAR_T_SUPPORT
 136   GLIBCPP_CHECK_CTYPE_SUPPORT
 137   GLIBCPP_CHECK_STDLIB_SUPPORT
 138
 139   AC_FUNC_MMAP
 140 fi
 141
 142 AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
 143 AM_CONDITIONAL(NULL_TARGET, test "$NULL_TARGET" = yes)
 144 AM_CONDITIONAL(NATIVE, test "$NATIVE" = yes || test "$NULL_TARGET" = yes)
 145 AM_CONDITIONAL(USE_LIBDIR, test -z "$with_cross_host")
 146
 147 AC_CACHE_SAVE
 148 AC_LC_MESSAGES
 149
 150 if test "${multilib}" = "yes"; then
 151   multilib_arg="--enable-multilib"
 152 else
 153   multilib_arg=
 154 fi
 155
 156
 157 # Generate the various Makefiles, include files, and scripts.
 158
 159 # This helps subvert libstdcxx_interface, as calculated by devo/config.if
 160 # Needed so that g++ can find the correct include subdir automatically.
 161 INTERFACE=v3
 162
 163 # Check for the interface version number for specifying where header
 164 # files are installed, if a version number is provided.
 165 AC_MSG_CHECKING([for interface version number])
 166 libstdcxx_interface=$INTERFACE
 167 AC_MSG_RESULT($libstdcxx_interface)
 168 AC_SUBST(libstdcxx_interface)
 169
 170 # Process the option --with-gxx-include-dir=<path to include-files directory>
 171 AC_MSG_CHECKING([for --with-gxx-include-dir])
 172 AC_ARG_WITH(gxx-include-dir,
 173 [ --with-gxx-include-dir  the installation directory for include files],
 174 [case "${withval}" in
 175   yes)
 176     AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
 177     gxx_include_dir=no
 178     ;;
 179   no)
 180     gxx_include_dir=no
 181     ;;
 182   *)
 183     gxx_include_dir=${withval}
 184     ;;
 185 esac], [gxx_include_dir=no])
 186 AC_MSG_RESULT($gxx_include_dir)
 187 AC_SUBST(gxx_include_dir)
 188 AM_CONDITIONAL(GXX_INCLUDE_DIR, test x${gxx_include_dir} != xno)
 189
 190 # Process the option "--enable-version-specific-runtime-libs"
 191 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
 192 AC_ARG_ENABLE(version-specific-runtime-libs,
 193 [  --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory ],
 194 [  version_specific_libs=yes
 195 # Need the gcc compiler version to know where to install libraries
 196 # and header files if --enable-version-specific-runtime-libs option
 197 # is selected.
 198 changequote(,)dnl
 199 gcc_tmp=`grep version_string ${srcdir}/../gcc/version.c | awk '{print $6}'`
 200 gcc_num=`echo ${gcc_tmp} | sed 's/\"//g'`
 201 #gcc_date=`grep version_string ${srcdir}/../gcc/version.c | awk '{print $7}'`
 202 #gcc_version=$gcc_num-$gcc_date
 203 gcc_version=$gcc_num
 204 changequote([,])dnl
 205 AC_SUBST(gcc_version)
 206 ],version_specific_libs=no)
 207 AC_MSG_RESULT($version_specific_libs)
 208 if test x${version_specific_libs} = xyes; then
 209   AM_CONDITIONAL(VERSION_SPECIFIC_LIBS, test x${version_specific_libs} = xyes)
 210   AC_MSG_WARN(version specific directory is: $gcc_version)
 211 fi
 212
 213
 214
 215 # Export all the include and flag information to makefiles.
 216 GLIBCPP_EXPORT_INCLUDES
 217 GLIBCPP_EXPORT_FLAGS
 218
 219 # This should be done by mkincludedir, but hack around it now.
 220 blddir=`pwd`
 221 echo "checking for $blddir/include"
 222
 223 if test ! -d "$blddir/include"; then
 224   mkdir "$blddir/include"
 225 fi
 226
 227 # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am
 228 # so that multilib installs will end up installed in the correct
 229 # place. To work around this not being passed down from config-ml.in
 230 # -> top_srcdir/Makefile.am -> top_srcdir/src/Makefile.am, manually
 231 # append it here.
 232 AC_OUTPUT(tests_flags mkcheck Makefile src/Makefile libmath/Makefile libio/Makefile libsupc++/Makefile,
 233 [if test -n "$CONFIG_FILES"; then
 234   ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
 235   grep '^MULTISUBDIR =' Makefile >> src/Makefile
 236 fi
 237 chmod +x tests_flags
 238 chmod +x mkcheck
 239 ],
 240 srcdir=${srcdir}
 241 host=${host}
 242 target=${target}
 243 with_multisubdir=${with_multisubdir}
 244 ac_configure_args="${multilib_arg} ${ac_configure_args}"
 245 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
 246 glibcpp_basedir=${glibcpp_basedir}
 247 CC="${CC}"
 248 CXX="${CXX}"
 249 )
 250
 251
 252 # Generate bits/c++config.h
 253 # NB: This must be the first generated file as others include it. . .
 254 $srcdir/mkc++config $blddir $srcdir
 255
 256 # Generate bits/std_limits.h and src/limitsMEMBERS.cc
 257 if test ! -f stamp-limits; then
 258   $srcdir/mknumeric_limits $blddir $srcdir $xcompiling
 259   touch stamp-limits
 260 fi
 261
 262
 263 # Sanity checking & User-visible messages.
 264 # Checks down here, otherwise they get scrolled off before
 265 # the user will notice.
 266
 267 # Trying to get more people to read documentation.  Possibly remove
 268 # check and warn all the time. There is no "informational" AC_MSG_
 269 # macro, so these are going to be printed even when --quiet/--silent
 270 # is given.
 271 if test ! -f stamp-sanity-warned; then
 272   touch stamp-sanity-warned
 273   echo ""
 274   echo "Please make certain that you read the installation information here:"
 275   echo "  faster => ${srcdir}/docs/install.html"
 276   echo "  slower => <URL:http://sources.redhat.com/libstdc++/install.html>"
 277   echo ""
 278   echo "and the configuration information here:"
 279   echo "  faster => ${srcdir}/docs/configopts.html"
 280   echo "  slower => <URL:http://sources.redhat.com/libstdc++/configopts.html>"
 281   echo ""
 282   echo "before proceeding with ${_cv_gnu_make_command}."
 283   echo ""
 284 fi