libstdc++-v3/configure.in

   1 # Process this file with autoconf to produce a configure script, like so:
   2 # aclocal -I m4, 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 AM_CONFIG_HEADER(config.h)
  22
  23 # Check for c++ or library specific bits that don't require linking.
  24 GLIBCPP_CHECK_COMPILER_VERSION
  25 GLIBCPP_CHECK_CPU
  26
  27 # Enable all the crazy c++ stuff.
  28 GLIBCPP_ENABLE_DEBUG
  29 GLIBCPP_ENABLE_CSTDIO
  30 GLIBCPP_ENABLE_LONG_LONG
  31 GLIBCPP_ENABLE_THREADS
  32 #GLIBCPP_ENABLE_RELIBGCC([../..])
  33 GLIBCPP_ENABLE_CXX_FLAGS([none])
  34
  35
  36 if test -n "$with_cross_host"; then
  37
  38   # We are being configured with a cross compiler.  AC_REPLACE_FUNCS
  39   # may not work correctly, because the compiler may not be able to
  40   # link executables.
  41
  42   xcompiling=1
  43   NATIVE=no
  44   # If Canadian cross, then don't pick up tools from the build
  45   # directory.
  46   if test "$build" != "$with_cross_host"; then
  47     CANADIAN=yes
  48     NULL_TARGET=yes
  49   else
  50     CANADIAN=no
  51     NULL_TARGET=no
  52   fi
  53
  54   case "$target_alias" in
  55     *-wince-*)
  56         # Configure for Microsoft Windows CE, or whatever they are
  57         # currently calling it.
  58         AC_DEFINE(HAVE_FLOAT_H)
  59
  60         AC_DEFINE(HAVE__FINITE)
  61         AC_DEFINE(HAVE__ISNAN)
  62         AC_DEFINE(HAVE__COPYSIGN)
  63         AC_DEFINE(HAVE__FPCLASS)
  64         AC_DEFINE(HAVE_MODF)
  65
  66         ctype_include_dir="config/wince"
  67         AC_SUBST(ctype_include_dir)
  68
  69         AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
  70
  71         AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
  72         AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
  73         ;;
  74     *)
  75         # We assume newlib.  This lets us hard-code the functions we know
  76         # we'll have.
  77         AC_DEFINE(HAVE_FINITE)
  78         AC_DEFINE(HAVE_ISNAN)
  79         AC_DEFINE(HAVE_ISNANF)
  80         AC_DEFINE(HAVE_ISINF)
  81         AC_DEFINE(HAVE_ISINFF)
  82
  83         ctype_include_dir="config/newlib"
  84         AC_SUBST(ctype_include_dir)
  85
  86         AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
  87
  88         AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
  89         AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
  90         # need to ceck for faster f versions of math functions, ie sinf?
  91         ;;
  92   esac
  93 else
  94
  95   # We are being configured natively. We can do more elaborate tests
  96   # that include AC_TRY_COMPILE now, as the linker is assumed to be
  97   # working.
  98
  99   xcompiling=0
 100   NATIVE=yes
 101   CANADIAN=no
 102   NULL_TARGET=no
 103
 104   # Check for available headers.
 105   AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
 106   machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h])
 107
 108   GLIBCPP_CHECK_COMPLEX_SUPPORT
 109   GLIBCPP_CHECK_COMPLEX_FLOAT_SUPPORT
 110   GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
 111   GLIBCPP_CHECK_MATH_SUPPORT
 112   GLIBCPP_CHECK_WCHAR_T_SUPPORT
 113   GLIBCPP_CHECK_CTYPE
 114
 115   AC_FUNC_MMAP
 116 fi
 117
 118 AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
 119 AM_CONDITIONAL(NULL_TARGET, test "$NULL_TARGET" = yes)
 120 AM_CONDITIONAL(NATIVE, test "$NATIVE" = yes || test "$NULL_TARGET" = yes)
 121 AM_CONDITIONAL(USE_LIBDIR, test -z "$with_cross_host")
 122
 123 AC_LC_MESSAGES
 124
 125
 126 # Sanity checking & User-visible messages.
 127 # Checks down here, otherwise they get scrolled off before
 128 # the user will notice.
 129 if test "$enable_namespaces" = "yes" && test "$enable_libgcc_rebuild" = "no"
 130 then
 131   AC_MSG_WARN([libgcc.a will not match mangled symbols unless it is rebuilt])
 132 fi
 133 if test "$enable_namespaces" = "no" && test "$enable_libgcc_rebuild" != "no"
 134 then
 135   # Other things besides namespaces can make this true as well, but none
 136   # of them are done automatically... yet
 137   AC_MSG_WARN([no point in rebuilding libgcc.a if namespaces aren't used])
 138 fi
 139
 140
 141 if test "${multilib}" = "yes"; then
 142   multilib_arg="--enable-multilib"
 143 else
 144   multilib_arg=
 145 fi
 146
 147
 148 # Generate the various Makefiles, include files, and scripts.
 149
 150 # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am
 151 # so that multilib installs will end up installed in the correct
 152 # place. To work around this not being passed down from config-ml.in
 153 # -> top_srcdir/Makefile.am -> top_srcdir/src/Makefile.am, manually
 154 # append it here.
 155
 156 AC_OUTPUT(mkcheck Makefile src/Makefile math/Makefile libio/Makefile,
 157 [if test -n "$CONFIG_FILES"; then
 158   ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
 159   grep '^MULTISUBDIR =' Makefile >> src/Makefile
 160 fi],
 161 srcdir=${srcdir}
 162 host=${host}
 163 target=${target}
 164 with_multisubdir=${with_multisubdir}
 165 ac_configure_args="${multilib_arg} ${ac_configure_args}"
 166 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
 167 glibcpp_basedir=${glibcpp_basedir}
 168 CC="${CC}"
 169 CXX="${CXX}"
 170 )
 171
 172
 173 blddir=`pwd`
 174 # Generate mkcheck having execute privs
 175 AC_OUTPUT_COMMANDS([chmod +x $blddir/mkcheck])
 176
 177 # Generate bits/c++config.h
 178 # NB: This must be the first generated file as others include it. . .
 179 AC_OUTPUT_COMMANDS([$srcdir/mkc++config $blddir $srcdir])
 180
 181 # Generate bits/std_limits.h and src/limitsMEMBERS.cc
 182 AC_OUTPUT_COMMANDS([$srcdir/mknumeric_limits $blddir $srcdir $xcompiling])
 183
 184 # Generate bits/c++threads.h
 185 AC_OUTPUT_COMMANDS([cp $srcdir/config/$THREADH $blddir/bits/c++threads.h])
 186
 187 # Generate bits/c++io.h and src/c++io.cc
 188 AC_OUTPUT_COMMANDS([cp $srcdir/config/$CSTDIO_H $blddir/bits/c++io.h])
 189 AC_OUTPUT_COMMANDS([cp $srcdir/config/$CSTDIO_CC $blddir/src/c++io.cc])
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