configure

俄罗斯高人Mamaich的Pocket gcc编译器（运行在PocketPC上）的全部源代码。

# FIXME: We temporarily define our own version of AC_PROG_CC.  This is
# copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS.  We
# are building a library that must be included in all links, so we 
# can't link an executable until this lib is built.
# autoconf should provide a way to do this.



cat >> confdefs.h <<\EOF
#define HAVE_GNU_LD 1
EOF

case "${target}" in
  *-*-cygwin*)
	;;
  a29k-amd-udi)
	;;
  arc-*-*)
	;;
  arm-*-pe)
	;;
  arm-*-*)
	;;
  strongarm-*-*)
	;;
  d10v*)
	;;
  h8300*-*-*)
	;;	
  h8500-*-*)
	;;	
  i345686-*-sco*)
	;;
  m32r-*-*)
	;;
  mn10?00-*-*)
	;;
  powerpcle-*-pe)
	;;
  sh*-*-*)
	;;
  sparc-sun-sunos*)
	;;
  sparc64-*-*)
	;;
  thumb-*-pe)
	;;
  thumb-*-*)
	;;
  v850-*-*)
	;;
  v850e-*-*)
	;;
  v850ea-*-*)
	;;
  w65-*-*)
	;;	
  xstormy16-*-*)
	;;
  z8k-*-*)
	;;
  *)
	cat >> confdefs.h <<\EOF
#define MISSING_SYSCALL_NAMES 1
EOF

	;;
esac

case "${target}" in
  *-*-elf)
        cat >> confdefs.h <<\EOF
#define HAVE_ELF 1
EOF


        echo $ac_n "checking for .previous assembler directive""... $ac_c" 1>&6
echo "configure:811: checking for .previous assembler directive" >&5
if eval "test \"`echo '$''{'libc_cv_asm_previous_directive'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
          cat > conftest.s <<EOF
.section foo_section
.previous
EOF
        if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:819: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
          cat >> confdefs.h <<\EOF
#define HAVE_ASM_PREVIOUS_DIRECTIVE 1
EOF

        fi
        rm -f conftest*
fi

echo "$ac_t""$libc_cv_asm_previous_directive" 1>&6

        echo $ac_n "checking for .popsection assembler directive""... $ac_c" 1>&6
echo "configure:831: checking for .popsection assembler directive" >&5
if eval "test \"`echo '$''{'libc_cv_asm_popsection_directive'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
          cat > conftest.s <<EOF
.pushsection foo_section
.popsection
EOF
        if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:839: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
          cat >> confdefs.h <<\EOF
#define HAVE_ASM_POPSECTION_DIRECTIVE 1
EOF

        fi
        rm -f conftest*
fi

echo "$ac_t""$libc_cv_asm_popsection_directive" 1>&6

        echo $ac_n "checking for section attributes""... $ac_c" 1>&6
echo "configure:851: checking for section attributes" >&5
if eval "test \"`echo '$''{'libc_cv_section_attributes'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
          cat > conftest.c <<EOF
int secttest __attribute__ ((section (".gnu.warning.secttest"))) = 10;
int main() {}
EOF
        if { ac_try='${CC-cc} -c $CFLAGS conftest.c 1>&5'; { (eval echo configure:859: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
          cat >> confdefs.h <<\EOF
#define HAVE_SECTION_ATTRIBUTES 1
EOF

        fi
        rm -f conftest*
fi

echo "$ac_t""$libc_cv_section_attributes" 1>&6
        ;;
esac

echo $ac_n "checking for function prefix""... $ac_c" 1>&6
echo "configure:873: checking for function prefix" >&5
if eval "test \"`echo '$''{'libc_dollar_prefix'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  cat > conftest.c <<\EOF
foo () { }
EOF
if { ac_try='${CC-cc} -S conftest.c -o - | fgrep "\$foo" > /dev/null'; { (eval echo configure:880: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; };
then
  libc_dollar_prefix=yes
else
  libc_dollar_prefix=no
fi
rm -f conftest* 
fi

echo "$ac_t""$libc_dollar_prefix" 1>&6
if test $libc_dollar_prefix = yes ; then
  cat >> confdefs.h <<\EOF
#define __SYMBOL_PREFIX "$"
EOF

else
  cat >> confdefs.h <<\EOF
#define __SYMBOL_PREFIX ""
EOF

fi

# Extract the first word of "gcc", so it can be a program name with args.
set dummy gcc; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:905: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  if test -n "$CC"; then
  ac_cv_prog_CC="$CC" # Let the user override the test.
else
  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
  ac_dummy="$PATH"
  for ac_dir in $ac_dummy; do
    test -z "$ac_dir" && ac_dir=.
    if test -f $ac_dir/$ac_word; then
      ac_cv_prog_CC="gcc"
      break
    fi
  done
  IFS="$ac_save_ifs"
fi
fi
CC="$ac_cv_prog_CC"
if test -n "$CC"; then
  echo "$ac_t""$CC" 1>&6
else
  echo "$ac_t""no" 1>&6
fi

if test -z "$CC"; then
  # Extract the first word of "cc", so it can be a program name with args.
set dummy cc; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:935: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  if test -n "$CC"; then
  ac_cv_prog_CC="$CC" # Let the user override the test.
else
  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
  ac_prog_rejected=no
  ac_dummy="$PATH"
  for ac_dir in $ac_dummy; do
    test -z "$ac_dir" && ac_dir=.
    if test -f $ac_dir/$ac_word; then
      if test "$ac_dir/$ac_word" = "/usr/ucb/cc"; then
        ac_prog_rejected=yes
	continue
      fi
      ac_cv_prog_CC="cc"
      break
    fi
  done
  IFS="$ac_save_ifs"
if test $ac_prog_rejected = yes; then
  # We found a bogon in the path, so make sure we never use it.
  set dummy $ac_cv_prog_CC
  shift
  if test $# -gt 0; then
    # We chose a different compiler from the bogus one.
    # However, it has the same basename, so the bogon will be chosen
    # first if we set CC to just the basename; use the full file name.
    shift
    set dummy "$ac_dir/$ac_word" "$@"
    shift
    ac_cv_prog_CC="$@"
  fi
fi
fi
fi
CC="$ac_cv_prog_CC"
if test -n "$CC"; then
  echo "$ac_t""$CC" 1>&6
else
  echo "$ac_t""no" 1>&6
fi

  test -z "$CC" && { echo "configure: error: no acceptable cc found in \$PATH" 1>&2; exit 1; }
fi

echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
echo "configure:984: checking whether we are using GNU C" >&5
if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  cat > conftest.c <<EOF
#ifdef __GNUC__
  yes;
#endif
EOF
if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:993: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
  ac_cv_prog_gcc=yes
else
  ac_cv_prog_gcc=no
fi
fi

echo "$ac_t""$ac_cv_prog_gcc" 1>&6

if test $ac_cv_prog_gcc = yes; then
  GCC=yes
  ac_test_CFLAGS="${CFLAGS+set}"
  ac_save_CFLAGS="$CFLAGS"
  CFLAGS=
  echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
echo "configure:1008: checking whether ${CC-cc} accepts -g" >&5
if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  echo 'void f(){}' > conftest.c
if test -z "`${CC-cc} -g -c conftest.c 2>&1`"; then
  ac_cv_prog_cc_g=yes
else
  ac_cv_prog_cc_g=no
fi
rm -f conftest*

fi

echo "$ac_t""$ac_cv_prog_cc_g" 1>&6
  if test "$ac_test_CFLAGS" = set; then
    CFLAGS="$ac_save_CFLAGS"
  elif test $ac_cv_prog_cc_g = yes; then
    CFLAGS="-g -O2"
  else
    CFLAGS="-O2"
  fi
else
  GCC=
  test "${CFLAGS+set}" = set || CFLAGS="-g"
fi

AS=${AS-as}

AR=${AR-ar}

LD=${LD-ld}

# Extract the first word of "ranlib", so it can be a program name with args.
set dummy ranlib; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:1044: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  if test -n "$RANLIB"; then
  ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
else
  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
  ac_dummy="$PATH"
  for ac_dir in $ac_dummy; do
    test -z "$ac_dir" && ac_dir=.
    if test -f $ac_dir/$ac_word; then
      ac_cv_prog_RANLIB="ranlib"
      break
    fi
  done
  IFS="$ac_save_ifs"
  test -z "$ac_cv_prog_RANLIB" && ac_cv_prog_RANLIB=":"
fi
fi
RANLIB="$ac_cv_prog_RANLIB"
if test -n "$RANLIB"; then
  echo "$ac_t""$RANLIB" 1>&6
else
  echo "$ac_t""no" 1>&6
fi


host_makefile_frag=${srcdir}/../config/default.mh

host_makefile_frag_path=$host_makefile_frag



trap '' 1 2 15
cat > confcache <<\EOF
# This file is a shell script that caches the results of configure
# tests run on this system so they can be shared between configure
# scripts and configure runs.  It is not useful on other systems.
# If it contains results you don't want to keep, you may remove or edit it.
#
# By default, configure uses ./config.cache as the cache file,
# creating it if it does not exist already.  You can give configure
# the --cache-file=FILE option to use a different cache file; that is
# what configure does when it calls configure scripts in
# subdirectories, so they share the cache.
# Giving --cache-file=/dev/null disables caching, for debugging configure.
# config.status only pays attention to the cache file if you give it the
# --recheck option to rerun configure.
#
EOF
# The following way of writing the cache mishandles newlines in values,
# but we know of no workaround that is simple, portable, and efficient.
# So, don't put newlines in cache variables' values.
# Ultrix sh set writes to stderr and can't be redirected directly,
# and sets the high bit in the cache file unless we assign to the vars.