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($ctype_include_dir/bits/ctype_noninline.h, \
  82         include/bits/ctype_noninline.h)
  83
  84         AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
  85         AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
  86         ;;
  87     *)
  88         # We assume newlib.  This lets us hard-code the functions we know
  89         # we'll have.
  90         AC_DEFINE(HAVE_FINITE)
  91         AC_DEFINE(HAVE_ISNAN)
  92         AC_DEFINE(HAVE_ISNANF)
  93         AC_DEFINE(HAVE_ISINF)
  94         AC_DEFINE(HAVE_ISINFF)
  95
  96         ctype_include_dir="config/os/newlib"
  97         AC_LINK_FILES($ctype_include_dir/bits/ctype_base.h,
  98         include/bits/ctype_base.h)
  99         AC_LINK_FILES($ctype_include_dir/bits/ctype_inline.h, \
 100         include/bits/ctype_inline.h)
 101         AC_LINK_FILES($ctype_include_dir/bits/ctype_noninline.h, \
 102         include/bits/ctype_noninline.h)
 103
 104         AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
 105         AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
 106         # need to check for faster f versions of math functions, ie sinf?
 107         ;;
 108   esac
 109 else
 110
 111   # We are being configured natively. We can do more elaborate tests
 112   # that include AC_TRY_COMPILE now, as the linker is assumed to be
 113   # working.
 114
 115   xcompiling=0
 116   NATIVE=yes
 117   CANADIAN=no
 118   NULL_TARGET=no
 119
 120   # Check for available headers.
 121   AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
 122   machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h])
 123
 124   GLIBCPP_CHECK_COMPILER_FEATURES
 125   GLIBCPP_CHECK_LINKER_FEATURES
 126   GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
 127   GLIBCPP_CHECK_MATH_SUPPORT
 128   GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
 129   GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
 130   GLIBCPP_CHECK_WCHAR_T_SUPPORT
 131   GLIBCPP_CHECK_CTYPE_SUPPORT
 132   GLIBCPP_CHECK_STDLIB_SUPPORT
 133
 134   AC_FUNC_MMAP
 135 fi
 136
 137 AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
 138 AM_CONDITIONAL(NULL_TARGET, test "$NULL_TARGET" = yes)
 139 AM_CONDITIONAL(NATIVE, test "$NATIVE" = yes || test "$NULL_TARGET" = yes)
 140 AM_CONDITIONAL(USE_LIBDIR, test -z "$with_cross_host")
 141
 142 AC_CACHE_SAVE
 143 AC_LC_MESSAGES
 144
 145 if test "${multilib}" = "yes"; then
 146   multilib_arg="--enable-multilib"
 147 else
 148   multilib_arg=
 149 fi
 150
 151
 152 # Generate the various Makefiles, include files, and scripts.
 153
 154 # This helps subvert libstdcxx_interface, as calculated by devo/config.if
 155 # Needed so that g++ can find the correct include subdir automatically.
 156 INTERFACE=v3
 157
 158 # Check for the interface version number for specifying where header
 159 # files are installed, if a version number is provided.
 160 AC_MSG_CHECKING([for interface version number])
 161 libstdcxx_interface=$INTERFACE
 162 AC_MSG_RESULT($libstdcxx_interface)
 163 AC_SUBST(libstdcxx_interface)
 164
 165 # Process the option --with-gxx-include-dir=<path to include-files directory>
 166 AC_MSG_CHECKING([for --with-gxx-include-dir])
 167 AC_ARG_WITH(gxx-include-dir,
 168 [ --with-gxx-include-dir  the installation directory for include files],
 169 [case "${withval}" in
 170   yes)
 171     AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
 172     gxx_include_dir=no
 173     ;;
 174   no)
 175     gxx_include_dir=no
 176     ;;
 177   *)
 178     gxx_include_dir=${withval}
 179     ;;
 180 esac], [gxx_include_dir=no])
 181 AC_MSG_RESULT($gxx_include_dir)
 182 AC_SUBST(gxx_include_dir)
 183 AM_CONDITIONAL(GXX_INCLUDE_DIR, test x${gxx_include_dir} != xno)
 184
 185 # Process the option "--enable-version-specific-runtime-libs"
 186 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
 187 AC_ARG_ENABLE(version-specific-runtime-libs,
 188 [  --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory ],
 189 [  version_specific_libs=yes
 190 # Need the gcc compiler version to know where to install libraries
 191 # and header files if --enable-version-specific-runtime-libs option
 192 # is selected.
 193 changequote(,)dnl
 194 gcc_tmp=`grep version_string ${srcdir}/../gcc/version.c | awk '{print $6}'`
 195 gcc_num=`echo ${gcc_tmp} | sed 's/\"//g'`
 196 #gcc_date=`grep version_string ${srcdir}/../gcc/version.c | awk '{print $7}'`
 197 #gcc_version=$gcc_num-$gcc_date
 198 gcc_version=$gcc_num
 199 changequote([,])dnl
 200 AC_SUBST(gcc_version)
 201 ],version_specific_libs=no)
 202 AC_MSG_RESULT($version_specific_libs)
 203 if test x${version_specific_libs} = xyes; then
 204   AM_CONDITIONAL(VERSION_SPECIFIC_LIBS, test x${version_specific_libs} = xyes)
 205   AC_MSG_WARN(version specific directory is: $gcc_version)
 206 fi
 207
 208
 209
 210 # Export all the include and flag information to makefiles.
 211 GLIBCPP_EXPORT_INCLUDES
 212 GLIBCPP_EXPORT_FLAGS
 213
 214 # This should be done by mkincludedir, but hack around it now.
 215 blddir=`pwd`
 216 echo "checking for $blddir/include"
 217
 218 if test ! -d "$blddir/include"; then
 219   mkdir "$blddir/include"
 220 fi
 221
 222 # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am
 223 # so that multilib installs will end up installed in the correct
 224 # place. To work around this not being passed down from config-ml.in
 225 # -> top_srcdir/Makefile.am -> top_srcdir/src/Makefile.am, manually
 226 # append it here.
 227 AC_OUTPUT(tests_flags mkcheck Makefile src/Makefile libmath/Makefile libio/Makefile libsupc++/Makefile,
 228 [if test -n "$CONFIG_FILES"; then
 229   ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
 230   grep '^MULTISUBDIR =' Makefile >> src/Makefile
 231 fi
 232 chmod +x tests_flags
 233 chmod +x mkcheck
 234 ],
 235 srcdir=${srcdir}
 236 host=${host}
 237 target=${target}
 238 with_multisubdir=${with_multisubdir}
 239 ac_configure_args="${multilib_arg} ${ac_configure_args}"
 240 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
 241 glibcpp_basedir=${glibcpp_basedir}
 242 CC="${CC}"
 243 CXX="${CXX}"
 244 )
 245
 246
 247 # Generate bits/c++config.h
 248 # NB: This must be the first generated file as others include it. . .
 249 $srcdir/mkc++config $blddir $srcdir
 250
 251 # Generate bits/std_limits.h and src/limitsMEMBERS.cc
 252 if test ! -f stamp-limits; then
 253   $srcdir/mknumeric_limits $blddir $srcdir $xcompiling
 254   touch stamp-limits
 255 fi
 256
 257
 258 # Sanity checking & User-visible messages.
 259 # Checks down here, otherwise they get scrolled off before
 260 # the user will notice.
 261
 262 # Trying to get more people to read documentation.  Possibly remove
 263 # check and warn all the time. There is no "informational" AC_MSG_
 264 # macro, so these are going to be printed even when --quiet/--silent
 265 # is given.
 266 if test ! -f stamp-sanity-warned; then
 267   touch stamp-sanity-warned
 268   echo ""
 269   echo "Please make certain that you read the installation information here:"
 270   echo "  faster => ${srcdir}/docs/install.html"
 271   echo "  slower => <URL:http://sources.redhat.com/libstdc++/install.html>"
 272   echo ""
 273   echo "and the configuration information here:"
 274   echo "  faster => ${srcdir}/docs/configopts.html"
 275   echo "  slower => <URL:http://sources.redhat.com/libstdc++/configopts.html>"
 276   echo ""
 277   echo "before proceeding with ${_cv_gnu_make_command}."
 278   echo ""
 279 fi