zlib/configure.ac

   1 dnl Process this with autoconf to create configure
   2
   3 AC_PREREQ(2.64)
   4 AC_INIT
   5 AC_CONFIG_SRCDIR([zlib.h])
   6
   7 if test -n "${with_target_subdir}"; then
   8   AM_ENABLE_MULTILIB(, ..)
   9 fi
  10
  11 AC_CANONICAL_SYSTEM
  12
  13 # This works around an automake problem.
  14 mkinstalldirs="`cd $ac_aux_dir && ${PWDCMD-pwd}`/mkinstalldirs"
  15 AC_SUBST(mkinstalldirs)
  16
  17 AM_INIT_AUTOMAKE(zlib, 1.1.4)
  18
  19 AM_MAINTAINER_MODE
  20
  21 dnl We use these options to decide which functions to include.
  22 AC_ARG_WITH(target-subdir,
  23 [  --with-target-subdir=SUBDIR
  24                           configuring in a subdirectory])
  25
  26 if test -z "$with_target_subdir" || test "$with_target_subdir" = "."; then
  27    COMPPATH=.
  28 else
  29    COMPPATH=..
  30 fi
  31 AC_SUBST(COMPPATH)
  32
  33 AC_ARG_WITH(cross-host,
  34 [  --with-cross-host=HOST  configuring with a cross compiler])
  35
  36 dnl Default to --enable-multilib
  37 AC_ARG_ENABLE(multilib,
  38 [  --enable-multilib       build many library versions (default)],
  39 [case "${enableval}" in
  40   yes) multilib=yes ;;
  41   no)  multilib=no ;;
  42   *)   AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
  43  esac], [test -z "$with_target_subdir" && multilib=no || multilib=yes])dnl
  44
  45 AC_ARG_WITH(system-zlib,
  46 [  --with-system-zlib      use installed libz])
  47
  48 # Make sure we don't test executables when making cross-tools.
  49 GCC_NO_EXECUTABLES
  50
  51 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
  52 # We must force CC to /not/ be precious variables; otherwise
  53 # the wrong, non-multilib-adjusted value will be used in multilibs.
  54 # As a side effect, we have to subst CFLAGS ourselves.
  55
  56 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
  57 m4_define([_AC_ARG_VAR_PRECIOUS],[])
  58 AC_PROG_CC
  59 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
  60
  61 AC_SUBST(CFLAGS)
  62
  63 AC_PROG_LIBTOOL
  64
  65 # Find CPP now so that any conditional tests below won't do it and
  66 # thereby make the resulting definitions conditional.
  67 AC_PROG_CPP
  68
  69 if test -n "$with_cross_host"; then
  70    # We are being configured with a cross compiler.  AC_REPLACE_FUNCS
  71    # may not work correctly, because the compiler may not be able to
  72    # link executables.
  73
  74    # We assume newlib.  This lets us hard-code the functions we know
  75    # we'll have.
  76    AC_DEFINE(HAVE_MEMCPY)
  77    AC_DEFINE(HAVE_STRERROR)
  78
  79    # We ignore --with-system-zlib in this case.
  80    target_all=libzgcj.la
  81 else
  82    AC_FUNC_MMAP
  83    AC_CHECK_FUNCS(memcpy strerror)
  84
  85    if test "$with_system_zlib" = yes; then
  86       AC_CHECK_LIB(z, deflate, target_all=, target_all=libzgcj.la)
  87    else
  88       target_all=libzgcj.la
  89    fi
  90 fi
  91
  92 AC_SUBST(target_all)
  93
  94 AC_CHECK_HEADERS(unistd.h)
  95
  96 if test -n "$with_cross_host" &&
  97    test x"$with_cross_host" != x"no"; then
  98   toolexecdir='$(exec_prefix)/$(target_alias)'
  99   toolexeclibdir='$(toolexecdir)/lib'
 100 else
 101   toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
 102   toolexeclibdir='$(libdir)'
 103 fi
 104 if test "$GCC" = yes && $CC -print-multi-os-directory > /dev/null 2>&1; then
 105   multiosdir=/`$CC -print-multi-os-directory`
 106   case $multiosdir in
 107     /.) multiosdir= ;; # Avoid trailing /.
 108   esac
 109 else
 110   multiosdir=
 111 fi
 112 toolexeclibdir=${toolexeclibdir}${multiosdir}
 113 AC_SUBST(toolexecdir)
 114 AC_SUBST(toolexeclibdir)
 115
 116 AM_CONDITIONAL(TARGET_LIBRARY, test -n "$with_target_subdir")
 117
 118 if test "${multilib}" = "yes"; then
 119   multilib_arg="--enable-multilib"
 120 else
 121   multilib_arg=
 122 fi
 123
 124 AC_ARG_ENABLE(host-shared,
 125 [AS_HELP_STRING([--enable-host-shared],
 126                 [build host code as shared libraries])],
 127 [PICFLAG=-fPIC], [PICFLAG=])
 128 AC_SUBST(PICFLAG)
 129
 130 AC_CONFIG_FILES([Makefile])
 131 AC_OUTPUT