InfoMagic Source Code 1993 July/THE_SOURCE_CODE_CD_ROM.iso/gnu/wdiff-0.04/configure

Text File | 1992-12-23 | 12.2 KB | 519 lines

#!/bin/sh
# Guess values for system-dependent variables and create Makefiles.
# Generated automatically using autoconf.
# Copyright (C) 1991, 1992 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

# Usage: configure [--srcdir=DIR] [--host=HOST] [--gas] [--nfp] [--no-create]
#        [--prefix=PREFIX] [--exec_prefix=PREFIX] [--with-PROGRAM] [TARGET]
# Ignores all args except --srcdir, --prefix, --exec_prefix, and --no-create.

trap 'rm -f conftest* core; exit 1' 1 3 15

for arg
do
  # Handle --exec_prefix with a space before the argument.
  if test x$next_exec_prefix = xyes; then exec_prefix=$arg; next_exec_prefix=
  # Handle --host with a space before the argument.
  elif test x$next_host = xyes; then next_host=
  # Handle --prefix with a space before the argument.
  elif test x$next_prefix = xyes; then prefix=$arg; next_prefix=
  # Handle --srcdir with a space before the argument.
  elif test x$next_srcdir = xyes; then srcdir=$arg; next_srcdir=
  else
    case $arg in
     -exec_prefix=* | --exec_prefix=* | --exec_prefi=* | --exec_pref=* | --exec_pre=* | --exec_pr=* | --exec_p=* | --exec_=* | --exec=* | --exe=* | --ex=* | --e=*)
    exec_prefix=`echo $arg | sed 's/[-a-z_]*=//'` ;;
     -exec_prefix | --exec_prefix | --exec_prefi | --exec_pref | --exec_pre | --exec_pr | --exec_p | --exec_ | --exec | --exe | --ex | --e)
    next_exec_prefix=yes ;;

     -gas | --gas | --ga | --g) ;;

     -host=* | --host=* | --hos=* | --ho=* | --h=*) ;;
     -host | --host | --hos | --ho | --h)
    next_host=yes ;;

     -nfp | --nfp | --nf) ;;

     -no-create | --no-create | --no-creat | --no-crea | --no-cre | --no-cr | --no-c | --no- | --no)
        no_create=1 ;;

     -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
    prefix=`echo $arg | sed 's/[-a-z_]*=//'` ;;
     -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
    next_prefix=yes ;;

     -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=* | --s=*)
    srcdir=`echo $arg | sed 's/[-a-z_]*=//'` ;;
     -srcdir | --srcdir | --srcdi | --srcd | --src | --sr | --s)
    next_srcdir=yes ;;

     -with-* | --with-*) ;;

     *) ;;
    esac
  fi
done

rm -f conftest*
compile='${CC-cc} $DEFS conftest.c -o conftest $LIBS >/dev/null 2>&1'

# A filename unique to this package, relative to the directory that
# configure is in, which we can look for to find out if srcdir is correct.
unique_file=wdiff.c

# Find the source files, if location was not specified.
if test -z "$srcdir"; then
  srcdirdefaulted=yes
  # Try the directory containing this script, then `..'.
  prog=$0
  confdir=`echo $prog|sed 's%/[^/][^/]*$%%'`
  test "X$confdir" = "X$prog" && confdir=.
  srcdir=$confdir
  if test ! -r $srcdir/$unique_file; then
    srcdir=..
  fi
fi
if test ! -r $srcdir/$unique_file; then
  if test x$srcdirdefaulted = xyes; then
    echo "configure: Can not find sources in \`${confdir}' or \`..'." 1>&2
  else
    echo "configure: Can not find sources in \`${srcdir}'." 1>&2
  fi
  exit 1
fi
# Preserve a srcdir of `.' to avoid automounter screwups with pwd.
# But we can't avoid them for `..', to make subdirectories work.
case $srcdir in
  .|/*|~*) ;;
  *) srcdir=`cd $srcdir; pwd` ;; # Make relative path absolute.
esac

if test -z "$CC"; then
  echo checking for gcc
  saveifs="$IFS"; IFS="${IFS}:"
  for dir in $PATH; do
    test -z "$dir" && dir=.
    if test -f $dir/gcc; then
      CC="gcc"
      break
    fi
  done
  IFS="$saveifs"
fi
test -z "$CC" && CC="cc"

# Find out if we are using GNU C, under whatever name.
cat <<EOF > conftest.c
#ifdef __GNUC__
  yes
#endif
EOF
${CC-cc} -E conftest.c > conftest.out 2>&1
if egrep yes conftest.out >/dev/null 2>&1; then
  GCC=1 # For later tests.
  CC="$CC -O"
fi
rm -f conftest*

# Make sure to not get the incompatible SysV /etc/install and
# /usr/sbin/install, which might be in PATH before a BSD-like install,
# or the SunOS /usr/etc/install directory, or the AIX /bin/install.
if test -z "$INSTALL"; then
  echo checking for install
  saveifs="$IFS"; IFS="${IFS}:"
  for dir in $PATH; do
    test -z "$dir" && dir=.
    case $dir in
    /etc|/usr/sbin|/usr/etc) ;;
    *)
      if test -f $dir/install; then
    if grep dspmsg $dir/install >/dev/null 2>&1; then
      : AIX
    else
      INSTALL="$dir/install -c"
      INSTALL_PROGRAM='$(INSTALL)'
      INSTALL_DATA='$(INSTALL) -m 644'
      break
    fi
      fi
      ;;
    esac
  done
  IFS="$saveifs"
fi
INSTALL=${INSTALL-cp}
INSTALL_PROGRAM=${INSTALL_PROGRAM-'$(INSTALL)'}
INSTALL_DATA=${INSTALL_DATA-'$(INSTALL)'}

for p in gnudiff diffgnu gdiff
do
if test -z "$DIFF"; then
  echo checking for $p
  saveifs="$IFS"; IFS="${IFS}:"
  for dir in $PATH; do
    test -z "$dir" && dir=.
    if test -f $dir/$p; then
      DIFF="$p"
      break
    fi
  done
  IFS="$saveifs"
fi
test -z "$DIFF" && DIFF=""

test -n "$DIFF" && break
done

if test "$DIFF" = gdiff; then
  # Carefully avoid gdiff for X as found on SGI systems.
  DISPLAY= gdiff /dev/null /dev/null > /dev/null 2>&1 || DIFF=
fi
test -n "$DIFF" || DIFF=diff
for p in less more
do
if test -z "$PAGER"; then
  echo checking for $p
  saveifs="$IFS"; IFS="${IFS}:"
  for dir in $PATH; do
    test -z "$dir" && dir=.
    if test -f $dir/$p; then
      PAGER="$p"
      break
    fi
  done
  IFS="$saveifs"
fi
test -z "$PAGER" && PAGER=""

test -n "$PAGER" && break
done


echo checking for Xenix
echo checking how to run the C preprocessor
if test -z "$CPP"; then
  CPP='${CC-cc} -E'
  cat <<EOF > conftest.c

#include <stdio.h>
EOF
err=`eval "$CPP $DEFS conftest.c 2>&1 >/dev/null"`
if test -z "$err"; then
  :
else
  CPP=/lib/cpp
fi
rm -f conftest*
fi

cat <<EOF > conftest.c

#if defined(M_XENIX) && !defined(M_UNIX)
  yes
#endif

EOF
eval "$CPP $DEFS conftest.c > conftest.out 2>&1"
if egrep "yes" conftest.out >/dev/null 2>&1; then
  XENIX=1
fi
rm -f conftest*

if test -n "$XENIX"; then
  LIBS="$LIBS -ltermlib"
else
  LIBS="$LIBS -ltermcap"
fi

echo checking for malloc library
# Irix requires -lmalloc for some unknown reason.
if test -r /usr/lib/libmalloc.a; then
  LIBS="$LIBS -lmalloc"
fi

echo checking for POSIXized ISC
if test -d /etc/conf/kconfig.d &&
  grep _POSIX_VERSION /usr/include/sys/unistd.h >/dev/null 2>&1
then
  ISC=1 # If later tests want to check for ISC.
  DEFS="$DEFS -D_POSIX_SOURCE=1"
  if test -n "$GCC"; then
    CC="$CC -posix"
  else
    CC="$CC -Xp"
  fi
fi

echo checking for working const
echo "
main() { exit(0); } t() { /* Ultrix mips cc rejects this.  */
typedef int charset[2]; const charset x;
/* SunOS 4.1.1 cc rejects this. */
char const *const *p;
char **p2;
/* HPUX 7.0 cc rejects these. */
++p;
p2 = (char const* const*) p;
 }" > conftest.c
if eval $compile; then
  :
else
  DEFS="$DEFS -Dconst="
fi
rm -f conftest*

echo checking for ANSI prototypes
cat <<EOF > conftest.c

#ifdef __STDC__
  yes
#endif

EOF
eval "$CPP $DEFS conftest.c > conftest.out 2>&1"
if egrep "yes" conftest.out >/dev/null 2>&1; then
  :
else
  U=_
fi
rm -f conftest*


echo checking for ANSI C header files
cat <<EOF > conftest.c

#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <float.h>
#include <limits.h>
EOF
err=`eval "$CPP $DEFS conftest.c 2>&1 >/dev/null"`
if test -z "$err"; then
  DEFS="$DEFS -DSTDC_HEADERS=1"
fi
rm -f conftest*

echo checking for unistd.h
cat <<EOF > conftest.c

#include <unistd.h>
EOF
err=`eval "$CPP $DEFS conftest.c 2>&1 >/dev/null"`
if test -z "$err"; then
  DEFS="$DEFS -DHAVE_UNISTD_H=1"
fi
rm -f conftest*

for hdr in string.h termcap.h
do
trfrom='[a-z]./' trto='[A-Z]__'
echo checking for $hdr
cat <<EOF > conftest.c

#include <$hdr>
EOF
err=`eval "$CPP $DEFS conftest.c 2>&1 >/dev/null"`
if test -z "$err"; then
  DEFS="$DEFS -DHAVE_`echo $hdr|tr "$trfrom" "$trto"`=1"
fi
rm -f conftest*
done

echo checking return type of signal handlers
echo '#include <signal.h>' > conftest.c
eval "$CPP $DEFS conftest.c > conftest.out 2>&1"
if egrep "(void|sighandler_t).*signal" conftest.out >/dev/null 2>&1; then
  :
else
  DEFS="$DEFS -DRETSIGTYPE=int"
fi
rm -f conftest*


for func in tputs
do
trfrom='[a-z]' trto='[A-Z]'
echo checking for ${func}
echo "
main() { exit(0); } t() {
/* Override any gcc2 internal prototype to avoid an error.  */
extern char ${func}(); ${func}(); }" > conftest.c
if eval $compile; then
  DEFS="$DEFS -DHAVE_`echo $func|tr "$trfrom" "$trto"`=1"
fi
rm -f conftest*
done

for func in strstr
do
echo checking for ${func}
echo "
main() { exit(0); } t() {
/* Override any gcc2 internal prototype to avoid an error.  */
extern char ${func}(); ${func}(); }" > conftest.c
if eval $compile; then
  :
else
  LIBOBJS="$LIBOBJS ${func}.o"
fi
rm -f conftest*

done

# The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
# for constant arguments.  Useless!
echo checking for working alloca.h
echo "#include <alloca.h>
main() { exit(0); } t() { char *p = alloca(2 * sizeof(int)); }" > conftest.c
if eval $compile; then
  DEFS="$DEFS -DHAVE_ALLOCA_H=1"
fi
rm -f conftest*

decl="#ifdef __GNUC__
#define alloca __builtin_alloca
#else
#if HAVE_ALLOCA_H
#include <alloca.h>
#else
#ifdef _AIX
 #pragma alloca
#else
char *alloca ();
#endif
#endif
#endif
"
echo checking for alloca
echo "$decl
main() { exit(0); } t() { char *p = (char *) alloca(1); }" > conftest.c
if eval $compile; then
  :
else
  alloca_missing=1
fi
rm -f conftest*

if test -n "$alloca_missing"; then
  SAVELIBS="$LIBS"
  # Maybe alloca is in a different library.
  #if test -f /usr/ucblib/libucb.a; then
    # Avoid the broken BSD compatibility library as much as possible.
    #LIBS="$LIBS -L/usr/ucblib -lc -lucb" trylib=-lucb # SVR4
  #el
  if test -f /lib/libPW.a; then
    LIBS="$LIBS -lPW" trylib=-lPW # SVR2 and SVR3
  fi
  if test -n "$trylib"; then
    alloca_missing=
    echo checking for alloca in $trylib
echo "$decl
main() { exit(0); } t() { char *p = (char *) alloca(1); }" > conftest.c
if eval $compile; then
  :
else
  alloca_missing=1
fi
rm -f conftest*

  fi
  if test -n "$alloca_missing"; then
    LIBS="$SAVELIBS" ALLOCA=alloca.o
  fi
fi

if test -n "$prefix"; then
  test -z "$exec_prefix" && exec_prefix='$(prefix)'
  prsub="s%^prefix[     ]*=.*$%prefix = $prefix%"
fi
if test -n "$exec_prefix"; then
  prsub="$prsub
s%^exec_prefix[     ]*=.*$%exec_prefix = $exec_prefix%"
fi

trap 'rm -f config.status; exit 1' 1 3 15
echo creating config.status
rm -f config.status
cat <<EOF > config.status
#!/bin/sh
# Generated automatically by configure.
# Run this file to recreate the current configuration.
# This directory was configured as follows,
# on host `(hostname || uname -n) 2>/dev/null`:
#
# $0 $*

case "\$1" in
  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
  exec /bin/sh $0 $* ;;
esac

trap 'rm -f Makefile; exit 1' 1 3 15
CC='$CC'
INSTALL='$INSTALL'
INSTALL_PROGRAM='$INSTALL_PROGRAM'
INSTALL_DATA='$INSTALL_DATA'
DIFF='$DIFF'
PAGER='$PAGER'
CPP='$CPP'
U='$U'
LIBOBJS='$LIBOBJS'
ALLOCA='$ALLOCA'
LIBS='$LIBS'
srcdir='$srcdir'
DEFS='$DEFS'
prefix='$prefix'
exec_prefix='$exec_prefix'
prsub='$prsub'
EOF
cat <<\EOF >> config.status

top_srcdir=$srcdir
for file in Makefile; do
  srcdir=$top_srcdir
  # Remove last slash and all that follows it.  Not all systems have dirname.
  dir=`echo $file|sed 's%/[^/][^/]*$%%'`
  if test "$dir" != "$file"; then
    test "$top_srcdir" != . && srcdir=$top_srcdir/$dir
    test ! -d $dir && mkdir $dir
  fi
  echo creating $file
  rm -f $file
  echo "# Generated automatically from `basename $file`.in by configure." > $file
  sed -e "
$prsub
s%@CC@%$CC%g
s%@INSTALL@%$INSTALL%g
s%@INSTALL_PROGRAM@%$INSTALL_PROGRAM%g
s%@INSTALL_DATA@%$INSTALL_DATA%g
s%@DIFF@%$DIFF%g
s%@PAGER@%$PAGER%g
s%@CPP@%$CPP%g
s%@U@%$U%g
s%@LIBOBJS@%$LIBOBJS%g
s%@ALLOCA@%$ALLOCA%g
s%@LIBS@%$LIBS%g
s%@srcdir@%$srcdir%g
s%@DEFS@%$DEFS%" $top_srcdir/${file}.in >> $file
done

EOF
chmod +x config.status
test -n "$no_create" || ./config.status