configure

#!/bin/sh

# SPDX-FileCopyrightText: 1998-2005 David Johnson
# SPDX-FileCopyrightText: 2016 Joao Eriberto Mota Filho <eriberto@debian.org>
#
# SPDX-License-Identifier: GPL-3.0-or-later

VERSION=1.5.0
RELEASE=1

if [ $RELEASE -eq 1 ]; then
 VERSIONLONG="$VERSION"
else
 VERSIONLONG="$VERSION [PRERELEASE]"
fi

echo
echo "Configure for iroffer $VERSIONLONG"

usage()
{
echo "Usage: Configure [ options ]"
echo "   -h           This help"
echo "   -e           Print errors while running Configure"
echo "   -d           Compile with debug symbols"
echo "   -p           Compile with profiling flags"
echo "   -w           Compile with extra warning flags"
exit 1
}

OPT_ERRORS=false
OPT_DEBUG=false
OPT_WARN=false
OPT_PROF=false

while getopts 'hedpw' OPTNAME; do
  case "$OPTNAME" in
    h) usage;;

    e) OPT_ERRORS=true;;
    d) OPT_DEBUG=true;;
    w) OPT_WARN=true;;
    p) OPT_PROF=true;;

    *) usage;;
  esac
done

echo -n "Determining OS... "
uname
ostype=`uname`
platform=`uname -m`
short_ostype=`uname | cut -d "_" -f 1`
libs=""

rm -f config.error.* config.temp*

case "$ostype" in
 Linux | FreeBSD | OpenBSD | NetBSD | IRIX | IRIX64 | \
 OSF1 | Rhapsody | Darwin | AIX )
  # nothing fancy
  ;;
 GNU/kFreeBSD | GNU )
  ostype=Linux
  ;;
 SunOS )
  libs="$libs -lsocket -lnsl"
  ;;
 BSD/OS )
  ostype=BSD_OS
  ;;
 HP-UX )
  ostype=HPUX
  ;;
 CYGWIN* )
  ostype=$short_ostype
  exe=.exe
  
  # only 1.5.6 or later is supported
  echo -n "Checking for cygwin >= 1.5.6... "
  ver=`uname -r | cut -d '(' -f 1`
  ver_A=`echo $ver | cut -d '.' -f 1`
  ver_B=`echo $ver | cut -d '.' -f 2`
  ver_C=`echo $ver | cut -d '.' -f 3`
  
  # 2.x.x - 9.x.x, 1.6.x - 1.9.x, and 1.5.6 - 1.5.9 are ok
  if [ \( "$ver_A" -ge "2" \)                                         \
    -o \( "$ver_A" -eq "1" -a "$ver_B" -ge "6" \)                     \
    -o \( "$ver_A" -eq "1" -a "$ver_B" -eq "5" -a "$ver_C" -ge "6" \) \
     ]; then
   echo "OK, $ver"
  else
   echo "***ERROR***: $ver < 1.5.6"
   exit # fatal error
   waserror=yes
  fi
  ;;
 *)
  echo "***ERROR***: This OS is not supported"
  exit
  ;;
esac

echo "/* Automatically Generated, Do Not Edit */" > src/iroffer_config.h
echo "" >> src/iroffer_config.h

echo "#define VERSIONLONG \"$VERSIONLONG\"" >> src/iroffer_config.h
echo "#define _OS_$ostype" >> src/iroffer_config.h

if $OPT_ERRORS; then
 echo "Printing Errors During Execution..."
 shift
else
 exec 2>/dev/null
fi

if $OPT_DEBUG; then
echo "Configuring for debugging."
DEBUG="-g"
shift
else
DEBUG="-O2"
fi

if $OPT_WARN; then
echo "Configuring for extra warnings."
WARNS="-Wshadow
-Wpointer-arith
-Wcast-qual
-Wcast-align
-Wstrict-prototypes
-Wmissing-prototypes
-Wmissing-declarations
-Winline
-Wwrite-strings
-Werror"
shift
fi

if $OPT_PROF; then
echo "Configuring for profiling."
PROF="-pg"
shift
fi

echo -n "Checking for make... "
if [ -f "`type make | awk '{print $NF}'`" ]; then
 maketype="make"
 if [ -x "`type $maketype | awk '{print $NF}'`" ]; then
  echo "found $maketype"
 else
  echo "found $maketype. ***ERROR***: You are not allowed to execute $maketype"
  waserror=yes
 fi
elif [ -f "`type gmake | awk '{print $NF}'`" ]; then
 maketype="gmake"
 if [ -x "`type $maketype | awk '{print $NF}'`" ]; then
  echo "found $maketype"
 else
  echo "found $maketype. ***ERROR***: You are not allowed to execute $maketype"
  waserror=yes
 fi
else
 echo "not found. ***ERROR***: Couldn't find make or gmake"
 maketype="make"
 waserror=yes
fi

echo -n "Checking for gcc/cc... "
if [ -f "`type gcc | awk '{print $NF}'`" ]; then
 cctype="gcc"
 if [ -x "`type $cctype | awk '{print $NF}'`" ]; then
  echo "found $cctype"
 else
  echo "found $cctype. ***ERROR***: You are not allowed to execute $cctype"
  waserror=yes
 fi
elif [ -f "`type cc | awk '{print $NF}'`" ]; then
 cctype="cc"
 if [ -x "`type $cctype | awk '{print $NF}'`" ]; then
  echo "found $cctype"
 else
  echo "found $cctype. ***ERROR***: You are not allowed to execute $cctype"
  waserror=yes
 fi
else
 echo "not found. ***ERROR***: Couldn't find gcc or cc"
 maketype="gcc"
 waserror=yes
fi

echo -n "Seeing if $cctype works... "
echo "
int main (int argc, char **argv) {exit(0);}
" > config.temp.c
if $cctype -o config.temp config.temp.c ; then
 echo "yes"
else
 echo " ***ERROR***: $cctype didn't seem to work."
 waserror=yes
fi

echo -n "Seeing if $cctype accepts '-Wall'... "
echo "
#include <stdlib.h>
int main (int argc, char **argv) {exit(0);}
" > config.temp.c
if $cctype -Wall -o config.temp config.temp.c ; then
 echo "yes"
 WARNS="-Wall $WARNS"
else
 echo " no"
fi

echo -n "Seeing if $cctype accepts '-Werror'... "
echo "
int main (int argc, char **argv) {exit(0);}
" > config.temp.c
if $cctype -Werror -o config.temp config.temp.c ; then
 echo "yes"
 WERROR="-Werror"
else
 echo " no"
fi

echo -n "Seeing if compiling with standard #include's works... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {exit(0);}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp; then
 echo "looks good"
else
 echo " ***ERROR***: couldn't build with standard #include's"
 waserror=yes
fi

echo -n "Seeing if large file support works... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {
 int fd;
 int array[ ((int)sizeof(off_t)) - 7 ];
 fd=open(\"foo\", O_RDWR | O_CREAT | ADDED_OPEN_FLAGS);
 array[0] = array[0];
 exit(0);
 }
" > config.temp.c
if $cctype -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE config.temp.c $libs -o config.temp $WARNS $WERROR ; then
 echo "yes"
 echo "#define _FILE_OFFSET_BITS 64" >> src/iroffer_config.h
 echo "#define _LARGEFILE_SOURCE" >> src/iroffer_config.h
else
 echo "No.  Max filesize will be 2GB."
fi

echo -n "Checking for snprintf()... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {char *s; snprintf(s,10,\"blah\"); exit(0);}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR ; then
 echo "found"
else
 echo "#define NO_SNPRINTF" >> src/iroffer_config.h
 echo "missing, will emulate"
fi

echo -n "Checking for strcasecmp()... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {strcasecmp(\"blah\",\"blah\"); exit(0);}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR ; then
 echo "found"
else
 echo "#define NO_STRCASECMP" >> src/iroffer_config.h
 echo "missing, will emulate"
fi

echo -n "Checking for strsignal()... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {strsignal(1); exit(0);}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR ; then
 echo "found"
else
 echo "#define NO_STRSIGNAL" >> src/iroffer_config.h
 echo "missing, will emulate"
fi

echo -n "Checking for regcomp()... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {regex_t *t; regcomp(t,\"blah\",REG_ICASE|REG_NOSUB); exit(0);}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR ; then
 echo "found"
else
 echo "Missing. ***ERROR***: couldn't find regcomp()"
 waserror=yes
fi

echo -n "Seeing if 'sys/mman.h' exists... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {exit(0);}
" > config.temp.c
if $cctype -c -DHAS_SYS_MMAN_H -o config.temp.o config.temp.c $WARNS $WERROR ; then
 echo "#define HAS_SYS_MMAN_H" >> src/iroffer_config.h
 echo "found"
else
 echo "not found"
fi

echo -n "Seeing if 'sys/sendfile.h' exists... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {exit(0);}
" > config.temp.c
if $cctype -c -DHAS_SYS_SENDFILE_H -o config.temp.o config.temp.c $WARNS $WERROR ; then
 echo "#define HAS_SYS_SENDFILE_H" >> src/iroffer_config.h
 echo "found"
else
 echo "not found"
fi

echo -n "Seeing if 'sys/vfs.h' exists... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {exit(0);}
" > config.temp.c
if $cctype -c -DHAS_SYS_VFS_H -o config.temp.o config.temp.c $WARNS $WERROR ; then
 echo "#define HAS_SYS_VFS_H" >> src/iroffer_config.h
 echo "found"
else
 echo "not found"
fi

echo -n "Seeing if 'sys/statfs.h' exists... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {exit(0);}
" > config.temp.c
if $cctype -c -DHAS_SYS_STATFS_H -o config.temp.o config.temp.c $WARNS $WERROR ; then
 echo "#define HAS_SYS_STATFS_H" >> src/iroffer_config.h
 echo "found"
else
 echo "not found"
fi

echo -n "Seeing if 'sys/param.h' exists... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {exit(0);}
" > config.temp.c
if $cctype -c -DHAS_SYS_PARAM_H -o config.temp.o config.temp.c $WARNS $WERROR ; then
 echo "#define HAS_SYS_PARAM_H" >> src/iroffer_config.h
 echo "found"
else
 echo "not found"
fi

echo -n "Seeing if 'sys/mount.h' exists... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {exit(0);}
" > config.temp.c
if $cctype -c -DHAS_SYS_MOUNT_H -o config.temp.o config.temp.c $WARNS $WERROR ; then
 echo "#define HAS_SYS_MOUNT_H" >> src/iroffer_config.h
 echo "found"
else
 echo "not found"
fi

echo -n "Seeing if 'sys/statvfs.h' exists... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {exit(0);}
" > config.temp.c
if $cctype -c -DHAS_SYS_STATVFS_H -o config.temp.o config.temp.c $WARNS $WERROR ; then
 echo "#define HAS_SYS_STATVFS_H" >> src/iroffer_config.h
 echo "found"
else
 echo "not found"
fi

echo -n "Checking for statvfs()... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {struct statvfs stf; statvfs(\"\",&stf); exit(0);}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR ; then
 echo "found"
else
 echo "#define NO_STATVFS" >> src/iroffer_config.h
 echo "missing"
fi

echo -n "Checking for statfs()... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {struct statfs stf; statfs(\"\",&stf); exit(0);}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR ; then
 echo "found"
else
 echo "#define NO_STATFS" >> src/iroffer_config.h
 echo "missing"
fi

echo -n "Seeing if 'crypt.h' is needed... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {crypt(\"aaaaaaaa\",\"aa\"); exit(0);}
" > config.temp.c
if $cctype -c -o config.temp.o config.temp.c $WARNS $WERROR ; then
 echo "not needed"
elif $cctype -c -DHAS_CRYPT_H -o config.temp.o config.temp.c $WARNS $WERROR ; then
 echo "#define HAS_CRYPT_H" >> src/iroffer_config.h
 echo "needed"
else
 echo "Missing. ***ERROR***: couldn't find crypt() with or without crypt.h"
 echo "#define HAS_CRYPT_H" >> src/iroffer_config.h
 waserror=yes
fi

echo -n "Seeing if '-lcrypt' is needed... "
if $cctype -o config.temp config.temp.o $WARNS $WERROR ; then
 echo "not needed"
elif $cctype -o config.temp config.temp.o $libs -lcrypt $WARNS $WERROR ; then
 libs="$libs -lcrypt"
 echo "needed"
else
 echo "Neither!"
 echo -n "Seeing if '-lcrypto' works instead... "
 if $cctype -o config.temp config.temp.o $libs -lcrypto $WARNS $WERROR ; then
  libs="$libs -lcrypto"
  echo "yes"
 else
  echo "Missing. ***ERROR***: couldn't link with or without -lcrypt or -lcrypto"
  libs="$libs -lcrypt"
  waserror=yes
 fi
fi

echo -n "Seeing if crypt() works as expected... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv)
  {
    char *pwout;
    pwout = crypt(\"testtest\",\"LH\");
    if (pwout && !strcmp(\"LHD/pLKwfn0.k\", pwout))
      {
        exit(0);
      }
    exit(1);
  }
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR && ./config.temp; then
 echo "yes"
else
 echo "no, will disable encrypted passwords"
 echo "#define NO_CRYPT" >> src/iroffer_config.h
fi


echo -n "Checking for chroot()... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {chroot(\".\"); exit(0);}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR; then
echo "found"
else
echo "#define NO_CHROOT" >> src/iroffer_config.h
echo "missing, will deactivate chroot()-ing"
fi

echo -n "Seeing if NSS libraries exist (for chroot)... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {exit(0);}
" > config.temp.c
if $cctype config.temp.c $libs -lnss_files -lnss_dns -o config.temp $WARNS $WERROR; then
NSSLIBS="-lnss_files -lnss_dns"
echo "found"
else
NSSLIBS=""
echo "missing"
fi

echo -n "Checking for setuid()... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {setuid(0); exit(0);}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR; then
echo "found"
else
echo "#define NO_SETUID" >> src/iroffer_config.h
echo "missing, will deactivate setuid()-ing"
fi

echo -n "Checking for getgrouplist()... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {getgrouplist (NULL, 0, NULL, NULL); exit(0);}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR; then
echo "found"
else
echo "#define NO_GETGROUPLIST" >> src/iroffer_config.h
echo "missing, group list will be incorrect when setuid()-ing"
fi

if [ "x$ostype" = "xLinux" ]; then
echo -n "Checking for Linux-style sendfile()... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv)
{
  int     out_fd = 0;
  int     in_fd = 0;
  off_t   offset = 0;
  size_t  count = 0;
  ssize_t ret_val;
  ret_val = sendfile(out_fd, in_fd, &offset, count);
  exit(0);
}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR; then
echo "#define HAVE_LINUX_SENDFILE" >> src/iroffer_config.h
echo "found"
else
echo "missing, won't use sendfile()"
fi
fi

if [ "x$ostype" = "xFreeBSD" ]; then
echo -n "Checking for FreeBSD-style sendfile()... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv)
{
  int     in_fd = 0;
  int     out_fd = 0;
  off_t   offset = 0;
  off_t   offset2 = 0;
  size_t  count = 0;
  struct sf_hdtr hdr = {};
  int ret_val;
  ret_val = sendfile(in_fd, out_fd, offset, count,
                     &hdr, &offset2, 0);
  exit(0);
}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR; then
echo "#define HAVE_FREEBSD_SENDFILE" >> src/iroffer_config.h
echo "found"
else
echo "missing, won't use sendfile()"
fi
fi

echo -n "Checking for mmap()/munmap()... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv)
{
  mmap(NULL,0,PROT_READ,MAP_SHARED,0,0);
  munmap(NULL,0);
  exit(0);
}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR; then
echo "#define HAVE_MMAP" >> src/iroffer_config.h
echo "found"
else
echo "missing, won't use mmap()"
fi


echo -n "Checking for name of fd limit... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv)
{
  struct rlimit rlim;
  getrlimit(RLIMIT_NOFILE, &rlim);
  exit(0);
}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR; then
echo "RLIMIT_NOFILE"
else
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv)
{
  struct rlimit rlim;
  getrlimit(RLIMIT_OFILE, &rlim);
  exit(0);
}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR; then
echo "RLIMIT_OFILE"
echo "#define USE_OFILE" >> src/iroffer_config.h
else
waserror=yes
echo "neither work, that's not good"
fi
fi

echo -n "Checking for siginfo_t/sa_sigaction... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {siginfo_t si; struct sigaction sa; sa.sa_sigaction = NULL; si.si_code = 0; exit(0);}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR; then
echo "found"
else
echo "#define NO_SIGINFO" >> src/iroffer_config.h
echo "missing, will use lame signal handlers"
fi

echo -n "Checking for si_code values... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {
  siginfo_t si;
  si.si_code = BUS_ADRALN;
  si.si_code = BUS_ADRERR;
  si.si_code = BUS_OBJERR;
  si.si_code = ILL_ILLOPC;
  si.si_code = ILL_ILLOPN;
  si.si_code = ILL_ILLADR;
  si.si_code = ILL_ILLTRP;
  si.si_code = ILL_PRVOPC;
  si.si_code = ILL_PRVREG;
  si.si_code = ILL_COPROC;
  si.si_code = ILL_BADSTK;
  si.si_code = FPE_INTDIV;
  si.si_code = FPE_INTOVF;
  si.si_code = FPE_FLTDIV;
  si.si_code = FPE_FLTOVF;
  si.si_code = FPE_FLTUND;
  si.si_code = FPE_FLTRES;
  si.si_code = FPE_FLTINV;
  si.si_code = FPE_FLTSUB;
  si.si_code = SEGV_MAPERR;
  si.si_code = SEGV_ACCERR;
  exit(0);
}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR; then
echo "found"
else
echo "#define NO_SIGCODES" >> src/iroffer_config.h
echo "missing, won't report si_codes"
fi

echo -n "Checking for wait status values... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {
  int status = 0;
  if (WIFEXITED(status) ||
      WIFSIGNALED(status) ||
      WEXITSTATUS(status) ||
      WTERMSIG(status))
    {
      status++;
    }
  exit(0);
}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR; then
echo "found"
else
echo "#define NO_WSTATUS_CODES" >> src/iroffer_config.h
echo "missing, won't report wait status codes"
fi


echo -n "Seeing if TOS can be set for IP sockets... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {
  int fd = 0;
  int tempc = 0x8; /* IPTOS_THROUGHPUT */
  setsockopt(fd, SOL_IP, IP_TOS, &tempc, sizeof(int));
  exit(0);
}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR; then
echo "yes"
else
echo "#define CANT_SET_TOS" >> src/iroffer_config.h
echo "no"
fi

echo -n "Checking for gethostbyname error values... "
echo "
#define GEX 
#include \"src/iroffer_config.h\"
#include \"src/iroffer_defines.h\"
#include \"src/iroffer_headers.h\"
#include \"src/iroffer_globals.h\"
int main (int argc, char **argv) {
  extern int h_errno;
  int i;
  switch (h_errno)
    {
     case HOST_NOT_FOUND:
     case NO_ADDRESS:
#if NO_ADDRESS != NO_DATA
     case NO_DATA:
#endif
     case NO_RECOVERY:
     case TRY_AGAIN:
       i = 1;
     default:
       i = 0;
    }
  exit(i);
}
" > config.temp.c
if $cctype config.temp.c $libs -o config.temp $WARNS $WERROR; then
echo "found"
else
echo "#define NO_HOSTCODES" >> src/iroffer_config.h
echo "missing, won't report error codes"
fi

rm -f config.temp*

echo "Creating src/iroffer_config.h... Done"

echo -n "Creating Makefile... "

cp /dev/null Makefile
(
echo "# Automatically Generated, Do Not Edit #"
echo
echo VERSION=$VERSION
echo CC=$cctype
echo CONFIG_EXE=$exe
echo CONFIG_LDLIBS=$libs
echo CONFIG_LDFLAGS=$PROF $DEBUG
echo CONFIG_CFLAGS=$PROF $WARNS $DEBUG -D_XOPEN_SOURCE=700 -D_BSD_SOURCE -D__BSD_VISIBLE -D_NETBSD_SOURCE=1
echo CONFIG_CPPFLAGS=
echo CONFIG_CHROOT=$NSSLIBS
if [ -z "$NSSLIBS" ]; then
 echo CONFIG_TARGETS=
else
 echo CONFIG_TARGETS=iroffer_chroot$exe
fi
echo
cat Makefile.config 
) > Makefile

echo Done
echo

if [ -n "$waserror" ]; then
echo "!!!!!WARNING!!!!!  one or more errors occurred, guesses for those values that failed were included."
echo "You should re-run Configure with the 'errors' argument to see the details."
echo
fi

echo "Type \"$maketype\" to compile"
echo "No errors or warnings should appear when compiling, if they do, something is wrong"
echo

# end