zlib/configure.in

   1 dnl Process this with autoconf to create configure
   2
   3 AC_INIT(zlib.h)
   4 AC_CANONICAL_SYSTEM
   5 AM_INIT_AUTOMAKE(zlib, 1.1.3)
   6
   7 AM_MAINTAINER_MODE
   8 AC_EXEEXT
   9
  10 AC_CONFIG_AUX_DIR(..)
  11
  12 dnl We use these options to decide which functions to include.
  13 AC_ARG_WITH(target-subdir,
  14 [  --with-target-subdir=SUBDIR      Configuring in a subdirectory])
  15 AC_ARG_WITH(cross-host,
  16 [  --with-cross-host=HOST           Configuring with a cross compiler])
  17
  18 dnl Default to --enable-multilib
  19 AC_ARG_ENABLE(multilib,
  20 [  --enable-multilib         build many library versions (default)],
  21 [case "${enableval}" in
  22   yes) multilib=yes ;;
  23   no)  multilib=no ;;
  24   *)   AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
  25  esac], [multilib=yes])dnl
  26
  27 dnl We may get other options which we dont document:
  28 dnl --with-target-subdir, --with-multisrctop, --with-multisubdir
  29
  30 if test "[$]{srcdir}" = "."; then
  31   if test "[$]{with_target_subdir}" != "."; then
  32     zlib_basedir="[$]{srcdir}/[$]{with_multisrctop}../"
  33   else
  34     zlib_basedir="[$]{srcdir}/[$]{with_multisrctop}"
  35   fi
  36 else
  37   zlib_basedir="[$]{srcdir}/"
  38 fi
  39 AC_SUBST(zlib_basedir)
  40
  41 LIB_AC_PROG_CC
  42 AM_PROG_LIBTOOL
  43
  44 if test -z "$with_target_subdir" || test "$with_target_subdir" = "."; then
  45    COMPPATH=.
  46 else
  47    COMPPATH=..
  48 fi
  49 AC_SUBST(COMPPATH)
  50
  51
  52 if test -n "$with_cross_host"; then
  53    # We are being configured with a cross compiler.  AC_REPLACE_FUNCS
  54    # may not work correctly, because the compiler may not be able to
  55    # link executables.
  56
  57    # We assume newlib.  This lets us hard-code the functions we know
  58    # we'll have.
  59    AC_DEFINE(HAVE_MEMCPY)
  60    AC_DEFINE(HAVE_STRERROR)
  61 else
  62    AC_FUNC_MMAP
  63    AC_CHECK_FUNCS(memcpy strerror)
  64 fi
  65
  66 AC_CHECK_HEADERS(unistd.h)
  67
  68 if test "${multilib}" = "yes"; then
  69   multilib_arg="--enable-multilib"
  70 else
  71   multilib_arg=
  72 fi
  73
  74 AC_OUTPUT(Makefile,
  75 [if test -n "$CONFIG_FILES"; then
  76   ac_file=Makefile . ${zlib_basedir}/../config-ml.in
  77 fi],
  78 srcdir=${srcdir}
  79 host=${host}
  80 target=${target}
  81 with_multisubdir=${with_multisubdir}
  82 ac_configure_args="${multilib_arg} ${ac_configure_args}"
  83 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
  84 zlib_basedir=${zlib_basedir}
  85 CC="${CC}"
  86 CXX="${CXX}"
  87 )