aclocal.m4

   1 dnl We define the macro GLIBC_PROVIDES to do an AC_PROVIDE for each macro
   2 dnl which appears in configure.in before the sysdep configure scripts are run.
   3 dnl Each sysdep configure.in does GLIBC_PROVIDES first, to avoid any
   4 dnl AC_REQUIREs or AC_BEFOREs duplicating their code.
   5 dnl
   6 define([GLIBC_PROVIDES], [dnl
   7 AC_PROVIDE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
   8 AC_PROVIDE([AC_CONFIG_SUBDIRS])dnl
   9 AC_PROVIDE([_AS_ECHO_N_PREPARE])dnl
  10 AC_PROVIDE([_AS_ECHO_PREPARE])dnl
  11 AC_PROVIDE([_AS_CR_PREPARE])dnl
  12 AC_PROVIDE([_AS_TR_SH_PREPARE])dnl
  13 AC_PROVIDE([AC_PROG_INSTALL])dnl
  14 AC_PROVIDE([AC_PROG_CC])dnl
  15 AC_PROVIDE([AC_PROG_CPP])dnl
  16 AC_PROVIDE([_AS_PATH_SEPARATOR_PREPARE])dnl
  17 AC_PROVIDE([_AS_TEST_PREPARE])dnl
  18 define([AS_MESSAGE_LOG_FD],5)dnl
  19 define([AS_MESSAGE_FD],6)dnl
  20 dnl Ripped out of AS_INIT, which does more cruft we do not want.
  21 m4_wrap([m4_divert_pop([BODY])[]])
  22 m4_divert_push([BODY])[]dnl
  23 dnl End of ripped out of AS_INIT.
  24 # This file is generated from configure.in by Autoconf.  DO NOT EDIT!
  25 define([_AC_LANG], [C])dnl
  26 ])dnl
  27 dnl
  28 dnl Check for a symbol
  29 dnl
  30 AC_DEFUN([AC_CHECK_SYMBOL], [dnl
  31 AC_MSG_CHECKING(for $1)
  32 AC_CACHE_VAL(ac_cv_check_symbol_$1, [dnl
  33 AC_TRY_LINK(,
  34 changequote(,)dnl
  35 extern char *$1[]; puts(*$1);,
  36 changequote([,])dnl
  37             ac_cv_check_symbol_$1=yes, ac_cv_check_symbol_$1=no)])
  38 if test "$ac_cv_check_symbol_$1" = yes; then
  39 changequote(,)dnl
  40   ac_tr_symbol=`echo $1 | tr '[a-z]' '[A-Z]'`
  41 changequote([,])dnl
  42   AC_DEFINE_UNQUOTED(HAVE_${ac_tr_symbol})
  43 fi
  44 AC_MSG_RESULT($ac_cv_check_symbol_$1)])dnl
  45 dnl
  46
  47 dnl Locate a program and check that its version is acceptable.
  48 dnl AC_PROG_CHECK_VER(var, namelist, version-switch,
  49 dnl                   [version-extract-regexp], version-glob [, do-if-fail])
  50 AC_DEFUN([AC_CHECK_PROG_VER],
  51 [AC_CHECK_PROGS([$1], [$2])
  52 if test -z "[$]$1"; then
  53   ac_verc_fail=yes
  54 else
  55   # Found it, now check the version.
  56   AC_MSG_CHECKING([version of [$]$1])
  57 changequote(<<,>>)dnl
  58   ac_prog_version=`<<$>>$1 $3 2>&1 ifelse(<<$4>>,,,
  59                    <<| sed -n 's/^.*patsubst(<<$4>>,/,\/).*$/\1/p'>>)`
  60   case $ac_prog_version in
  61     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
  62     <<$5>>)
  63 changequote([,])dnl
  64        ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
  65     *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
  66
  67   esac
  68   AC_MSG_RESULT([$ac_prog_version])
  69 fi
  70 ifelse([$6],,,
  71 [if test $ac_verc_fail = yes; then
  72   $6
  73 fi])
  74 ])
  75
  76 dnl These modifications are to allow for an empty cross compiler tree.
  77 define([_AC_COMPILER_EXEEXT], [EXEEXT=
  78 ])
  79
  80 AC_DEFUN([LIBC_PROG_FOO_GNU],
  81 [# Most GNU programs take a -v and spit out some text including
  82 # the word 'GNU'.  Some try to read stdin, so give them /dev/null.
  83 if $1 -o conftest -v </dev/null 2>&1 | grep GNU > /dev/null 2>&1; then
  84   $2
  85 else
  86   $3
  87 fi
  88 rm -fr contest*])
  89
  90 AC_DEFUN([LIBC_PROG_BINUTILS],
  91 [# Was a --with-binutils option given?
  92 if test -n "$path_binutils"; then
  93     # Make absolute; ensure a single trailing slash.
  94     path_binutils=`(cd $path_binutils; pwd) | sed 's%/*$%/%'`
  95     CC="$CC -B$path_binutils"
  96 fi
  97 AS=`$CC -print-prog-name=as`
  98 LD=`$CC -print-prog-name=ld`
  99 AR=`$CC -print-prog-name=ar`
 100 AC_SUBST(AR)
 101 OBJDUMP=`$CC -print-prog-name=objdump`
 102 AC_SUBST(OBJDUMP)
 103 OBJCOPY=`$CC -print-prog-name=objcopy`
 104 AC_SUBST(OBJCOPY)
 105
 106 # Determine whether we are using GNU binutils.
 107 AC_CACHE_CHECK(whether $AS is GNU as, libc_cv_prog_as_gnu,
 108 [LIBC_PROG_FOO_GNU($AS, libc_cv_prog_as_gnu=yes, libc_cv_prog_as_gnu=no)])
 109 rm -f a.out
 110 gnu_as=$libc_cv_prog_as_gnu
 111
 112 AC_CACHE_CHECK(whether $LD is GNU ld, libc_cv_prog_ld_gnu,
 113 [LIBC_PROG_FOO_GNU($LD, libc_cv_prog_ld_gnu=yes, libc_cv_prog_ld_gnu=no)])
 114 gnu_ld=$libc_cv_prog_ld_gnu
 115 ])
 116
 117 dnl Run a static link test with -nostdlib -nostartfiles.
 118 dnl LIBC_TRY_LINK_STATIC([code], [action-if-true], [action-if-false])
 119 AC_DEFUN([LIBC_TRY_LINK_STATIC],
 120 [cat > conftest.c <<EOF
 121 int _start (void) { return 0; }
 122 int __start (void) { return 0; }
 123 $1
 124 EOF
 125 AS_IF([AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest
 126                        conftest.c -static -nostartfiles -nostdlib
 127                        1>&AS_MESSAGE_LOG_FD])],
 128       [$2], [$3])
 129 rm -f conftest*])