newlib/acinclude.m4

   1 dnl This provides configure definitions used by all the newlib
   2 dnl configure.in files.
   3
   4 AC_DEFUN([DEF_NEWLIB_VERSION],
   5 m4_define([NEWLIB_VERSION],[1.16.0]))
   6
   7 dnl Basic newlib configury.  This calls basic introductory stuff,
   8 dnl including AM_INIT_AUTOMAKE and AC_CANONICAL_HOST.  It also runs
   9 dnl configure.host.  The only argument is the relative path to the top
  10 dnl newlib directory.
  11
  12 AC_DEFUN([NEWLIB_CONFIGURE],
  13 [AC_REQUIRE([DEF_NEWLIB_VERSION])
  14 dnl Default to --enable-multilib
  15 AC_ARG_ENABLE(multilib,
  16 [  --enable-multilib         build many library versions (default)],
  17 [case "${enableval}" in
  18   yes) multilib=yes ;;
  19   no)  multilib=no ;;
  20   *)   AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
  21  esac], [multilib=yes])dnl
  22
  23 dnl Support --enable-target-optspace
  24 AC_ARG_ENABLE(target-optspace,
  25 [  --enable-target-optspace  optimize for space],
  26 [case "${enableval}" in
  27   yes) target_optspace=yes ;;
  28   no)  target_optspace=no ;;
  29   *)   AC_MSG_ERROR(bad value ${enableval} for target-optspace option) ;;
  30  esac], [target_optspace=])dnl
  31
  32 dnl Support --enable-malloc-debugging - currently only supported for Cygwin
  33 AC_ARG_ENABLE(malloc-debugging,
  34 [  --enable-malloc-debugging indicate malloc debugging requested],
  35 [case "${enableval}" in
  36   yes) malloc_debugging=yes ;;
  37   no)  malloc_debugging=no ;;
  38   *)   AC_MSG_ERROR(bad value ${enableval} for malloc-debugging option) ;;
  39  esac], [malloc_debugging=])dnl
  40
  41 dnl Support --enable-newlib-multithread
  42 AC_ARG_ENABLE(newlib-multithread,
  43 [  --enable-newlib-multithread        enable support for multiple threads],
  44 [case "${enableval}" in
  45   yes) newlib_multithread=yes ;;
  46   no)  newlib_multithread=no ;;
  47   *)   AC_MSG_ERROR(bad value ${enableval} for newlib-multithread option) ;;
  48  esac], [newlib_multithread=yes])dnl
  49
  50 dnl Support --enable-newlib-iconv
  51 AC_ARG_ENABLE(newlib-iconv,
  52 [  --enable-newlib-iconv     enable iconv library support],
  53 [if test "${newlib_iconv+set}" != set; then
  54    case "${enableval}" in
  55      yes) newlib_iconv=yes ;;
  56      no)  newlib_iconv=no ;;
  57      *)   AC_MSG_ERROR(bad value ${enableval} for newlib-iconv option) ;;
  58    esac
  59  fi], [newlib_iconv=${newlib_iconv}])dnl
  60
  61 dnl Support --enable-newlib-elix-level
  62 AC_ARG_ENABLE(newlib-elix-level,
  63 [  --enable-newlib-elix-level         supply desired elix library level (1-4)],
  64 [case "${enableval}" in
  65   0)   newlib_elix_level=0 ;;
  66   1)   newlib_elix_level=1 ;;
  67   2)   newlib_elix_level=2 ;;
  68   3)   newlib_elix_level=3 ;;
  69   4)   newlib_elix_level=4 ;;
  70   *)   AC_MSG_ERROR(bad value ${enableval} for newlib-elix-level option) ;;
  71  esac], [newlib_elix_level=0])dnl
  72
  73 dnl Support --disable-newlib-io-float
  74 AC_ARG_ENABLE(newlib-io-float,
  75 [  --disable-newlib-io-float disable printf/scanf family float support],
  76 [case "${enableval}" in
  77   yes) newlib_io_float=yes ;;
  78   no)  newlib_io_float=no ;;
  79   *)   AC_MSG_ERROR(bad value ${enableval} for newlib-io-float option) ;;
  80  esac], [newlib_io_float=yes])dnl
  81
  82 dnl Support --disable-newlib-supplied-syscalls
  83 AC_ARG_ENABLE(newlib-supplied-syscalls,
  84 [  --disable-newlib-supplied-syscalls disable newlib from supplying syscalls],
  85 [case "${enableval}" in
  86   yes) newlib_may_supply_syscalls=yes ;;
  87   no)  newlib_may_supply_syscalls=no ;;
  88   *)   AC_MSG_ERROR(bad value ${enableval} for newlib-supplied-syscalls option) ;;
  89  esac], [newlib_may_supply_syscalls=yes])dnl
  90
  91 AM_CONDITIONAL(MAY_SUPPLY_SYSCALLS, test x[$]{newlib_may_supply_syscalls} = xyes)
  92
  93 dnl We may get other options which we don't document:
  94 dnl --with-target-subdir, --with-multisrctop, --with-multisubdir
  95
  96 test -z "[$]{with_target_subdir}" && with_target_subdir=.
  97
  98 if test "[$]{srcdir}" = "."; then
  99   if test "[$]{with_target_subdir}" != "."; then
 100     newlib_basedir="[$]{srcdir}/[$]{with_multisrctop}../$1"
 101   else
 102     newlib_basedir="[$]{srcdir}/[$]{with_multisrctop}$1"
 103   fi
 104 else
 105   newlib_basedir="[$]{srcdir}/$1"
 106 fi
 107 AC_SUBST(newlib_basedir)
 108
 109 AC_CANONICAL_HOST
 110
 111 AM_INIT_AUTOMAKE([cygnus no-define 1.9.5])
 112
 113 # FIXME: We temporarily define our own version of AC_PROG_CC.  This is
 114 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS.  We
 115 # are probably using a cross compiler, which will not be able to fully
 116 # link an executable.  This should really be fixed in autoconf
 117 # itself.
 118
 119 AC_DEFUN([LIB_AC_PROG_CC_GNU],
 120 [AC_CACHE_CHECK(whether we are using GNU C, ac_cv_prog_gcc,
 121 [dnl The semicolon is to pacify NeXT's syntax-checking cpp.
 122 cat > conftest.c <<EOF
 123 #ifdef __GNUC__
 124   yes;
 125 #endif
 126 EOF
 127 if AC_TRY_COMMAND(${CC-cc} -E conftest.c) | egrep yes >/dev/null 2>&1; then
 128   ac_cv_prog_gcc=yes
 129 else
 130   ac_cv_prog_gcc=no
 131 fi])])
 132
 133 AC_DEFUN([LIB_AM_PROG_AS],
 134 [# By default we simply use the C compiler to build assembly code.
 135 AC_REQUIRE([LIB_AC_PROG_CC])
 136 test "${CCAS+set}" = set || CCAS=$CC
 137 test "${CCASFLAGS+set}" = set || CCASFLAGS=$CFLAGS
 138 AC_ARG_VAR([CCAS],      [assembler compiler command (defaults to CC)])
 139 AC_ARG_VAR([CCASFLAGS], [assembler compiler flags (defaults to CFLAGS)])
 140 ])
 141
 142 AC_DEFUN([LIB_AC_PROG_CC],
 143 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
 144 AC_CHECK_PROG(CC, gcc, gcc)
 145 _AM_DEPENDENCIES(CC)
 146 if test -z "$CC"; then
 147   AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
 148   test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
 149 fi
 150
 151 LIB_AC_PROG_CC_GNU
 152
 153 if test $ac_cv_prog_gcc = yes; then
 154   GCC=yes
 155 dnl Check whether -g works, even if CFLAGS is set, in case the package
 156 dnl plays around with CFLAGS (such as to build both debugging and
 157 dnl normal versions of a library), tasteless as that idea is.
 158   ac_test_CFLAGS="${CFLAGS+set}"
 159   ac_save_CFLAGS="$CFLAGS"
 160   CFLAGS=
 161   _AC_PROG_CC_G
 162   if test "$ac_test_CFLAGS" = set; then
 163     CFLAGS="$ac_save_CFLAGS"
 164   elif test $ac_cv_prog_cc_g = yes; then
 165     CFLAGS="-g -O2"
 166   else
 167     CFLAGS="-O2"
 168   fi
 169 else
 170   GCC=
 171   test "${CFLAGS+set}" = set || CFLAGS="-g"
 172 fi
 173 ])
 174
 175 LIB_AC_PROG_CC
 176
 177 AC_CHECK_TOOL(AS, as)
 178 AC_CHECK_TOOL(AR, ar)
 179 AC_CHECK_TOOL(RANLIB, ranlib, :)
 180 AC_CHECK_TOOL(READELF, readelf, :)
 181
 182 AC_PROG_INSTALL
 183
 184 # Hack to ensure that INSTALL won't be set to "../" with autoconf 2.13.  */
 185 ac_given_INSTALL=$INSTALL
 186
 187 AM_MAINTAINER_MODE
 188 LIB_AM_PROG_AS
 189
 190 # We need AC_EXEEXT to keep automake happy in cygnus mode.  However,
 191 # at least currently, we never actually build a program, so we never
 192 # need to use $(EXEEXT).  Moreover, the test for EXEEXT normally
 193 # fails, because we are probably configuring with a cross compiler
 194 # which can't create executables.  So we include AC_EXEEXT to keep
 195 # automake happy, but we don't execute it, since we don't care about
 196 # the result.
 197 if false; then
 198   AC_EXEEXT
 199   dummy_var=1
 200 fi
 201
 202 . [$]{newlib_basedir}/configure.host
 203
 204 newlib_cflags="[$]{newlib_cflags} -fno-builtin"
 205
 206 NEWLIB_CFLAGS=${newlib_cflags}
 207 AC_SUBST(NEWLIB_CFLAGS)
 208
 209 LDFLAGS=${ldflags}
 210 AC_SUBST(LDFLAGS)
 211
 212 AM_CONDITIONAL(ELIX_LEVEL_0, test x[$]{newlib_elix_level} = x0)
 213 AM_CONDITIONAL(ELIX_LEVEL_1, test x[$]{newlib_elix_level} = x1)
 214 AM_CONDITIONAL(ELIX_LEVEL_2, test x[$]{newlib_elix_level} = x2)
 215 AM_CONDITIONAL(ELIX_LEVEL_3, test x[$]{newlib_elix_level} = x3)
 216 AM_CONDITIONAL(ELIX_LEVEL_4, test x[$]{newlib_elix_level} = x4)
 217
 218 AM_CONDITIONAL(USE_LIBTOOL, test x[$]{use_libtool} = xyes)
 219
 220 # Hard-code OBJEXT.  Normally it is set by AC_OBJEXT, but we
 221 # use oext, which is set in configure.host based on the target platform.
 222 OBJEXT=${oext}
 223
 224 AC_SUBST(OBJEXT)
 225 AC_SUBST(oext)
 226 AC_SUBST(aext)
 227 AC_SUBST(lpfx)
 228
 229 AC_SUBST(libm_machine_dir)
 230 AC_SUBST(machine_dir)
 231 AC_SUBST(sys_dir)
 232 ])