zlib/configure.in

   1 dnl Process this with autoconf to create configure
   2
   3 AC_INIT(zlib.h)
   4
   5 dnl We may get other options which we dont document:
   6 dnl --with-target-subdir, --with-multisrctop, --with-multisubdir
   7
   8 if test "x[$]{with_target_subdir}" != x && \
   9    test "[$]{srcdir}" = "."; then
  10   if test "[$]{with_target_subdir}" != "."; then
  11     zlib_basedir="[$]{srcdir}/[$]{with_multisrctop}../"
  12   else
  13     zlib_basedir="[$]{srcdir}/[$]{with_multisrctop}"
  14   fi
  15 else
  16   zlib_basedir="[$]{srcdir}/"
  17 fi
  18 AC_SUBST(zlib_basedir)
  19 AC_CONFIG_AUX_DIR($zlib_basedir..)
  20 if :; then :; else
  21   # This overrides the previous occurrence for automake, but not for
  22   # autoconf, which is exactly what we want.
  23   AC_CONFIG_AUX_DIR(..)
  24 fi
  25
  26 AC_CANONICAL_SYSTEM
  27 AM_INIT_AUTOMAKE(zlib, 1.1.3)
  28
  29 AM_MAINTAINER_MODE
  30
  31 dnl We use these options to decide which functions to include.
  32 AC_ARG_WITH(target-subdir,
  33 [  --with-target-subdir=SUBDIR
  34                           configuring in a subdirectory])
  35 AC_ARG_WITH(cross-host,
  36 [  --with-cross-host=HOST  configuring with a cross compiler])
  37
  38 dnl Default to --enable-multilib
  39 AC_ARG_ENABLE(multilib,
  40 [  --enable-multilib       build many library versions (default)],
  41 [case "${enableval}" in
  42   yes) multilib=yes ;;
  43   no)  multilib=no ;;
  44   *)   AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
  45  esac], [test -z "$with_target_subdir" && multilib=no || multilib=yes])dnl
  46
  47 AC_ARG_WITH(system-zlib,
  48 [  --with-system-zlib      use installed libz])
  49
  50 LIB_AC_PROG_CC
  51 # We need AC_EXEEXT to keep automake happy in cygnus mode.  However,
  52 # at least currently, we never actually build a program, so we never
  53 # need to use $(EXEEXT).  Moreover, the test for EXEEXT normally
  54 # fails, because we are probably configuring with a cross compiler
  55 # which cant create executables.  So we include AC_EXEEXT to keep
  56 # automake happy, but we dont execute it, since we dont care about
  57 # the result.
  58 if false; then
  59   AC_EXEEXT
  60 fi
  61 AM_PROG_LIBTOOL
  62
  63 if test -z "$with_target_subdir" || test "$with_target_subdir" = "."; then
  64    COMPPATH=.
  65 else
  66    COMPPATH=..
  67 fi
  68 AC_SUBST(COMPPATH)
  69
  70 # Find CPP now so that any conditional tests below won't do it and
  71 # thereby make the resulting definitions conditional.
  72 AC_PROG_CPP
  73
  74 if test -n "$with_cross_host"; then
  75    # We are being configured with a cross compiler.  AC_REPLACE_FUNCS
  76    # may not work correctly, because the compiler may not be able to
  77    # link executables.
  78
  79    # We assume newlib.  This lets us hard-code the functions we know
  80    # we'll have.
  81    AC_DEFINE(HAVE_MEMCPY)
  82    AC_DEFINE(HAVE_STRERROR)
  83
  84    # We ignore --with-system-zlib in this case.
  85    target_all=libzgcj.la
  86 else
  87    AC_FUNC_MMAP
  88    AC_CHECK_FUNCS(memcpy strerror)
  89
  90    if test "$with_system_zlib" = yes; then
  91       AC_CHECK_LIB(z, deflate, target_all=, target_all=libzgcj.la)
  92    else
  93       target_all=libzgcj.la
  94    fi
  95 fi
  96
  97 AC_SUBST(target_all)
  98
  99 AC_CHECK_HEADERS(unistd.h)
 100
 101 AM_CONDITIONAL(USE_LIBDIR, test -z "$with_cross_host")
 102 AM_CONDITIONAL(TARGET_LIBRARY, test -n "$with_target_subdir")
 103
 104 if test "${multilib}" = "yes"; then
 105   multilib_arg="--enable-multilib"
 106 else
 107   multilib_arg=
 108 fi
 109
 110 AC_OUTPUT(Makefile,
 111 [if test -n "$CONFIG_FILES"; then
 112   ac_file=Makefile . ${zlib_basedir}/../config-ml.in
 113 fi],
 114 srcdir=${srcdir}
 115 host=${host}
 116 target=${target}
 117 with_multisubdir=${with_multisubdir}
 118 ac_configure_args="${multilib_arg} ${ac_configure_args}"
 119 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
 120 zlib_basedir=${zlib_basedir}
 121 CC="${CC}"
 122 CXX="${CXX}"
 123 )