configure

C++类模版库实现

# because not all systems understand e.g. LANG=C (notably SCO).
# Fixing LC_MESSAGES prevents Solaris sh from translating var values in `set'!
# Non-C LC_CTYPE values break the ctype check.
if test "${LANG+set}"   = set; then LANG=C;   export LANG;   fi
if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi
if test "${LC_MESSAGES+set}" = set; then LC_MESSAGES=C; export LC_MESSAGES; fi
if test "${LC_CTYPE+set}"    = set; then LC_CTYPE=C;    export LC_CTYPE;    fi

# confdefs.h avoids OS command line length limits that DEFS can exceed.
rm -rf conftest* confdefs.h
# AIX cpp loses on an empty file, so make sure it contains at least a newline.
echo > confdefs.h

# 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.
ac_unique_file=stlconf.h.in

# Find the source files, if location was not specified.
if test -z "$srcdir"; then
  ac_srcdir_defaulted=yes
  # Try the directory containing this script, then its parent.
  ac_prog=$0
  ac_confdir=`echo $ac_prog|sed 's%/[^/][^/]*$%%'`
  test "x$ac_confdir" = "x$ac_prog" && ac_confdir=.
  srcdir=$ac_confdir
  if test ! -r $srcdir/$ac_unique_file; then
    srcdir=..
  fi
else
  ac_srcdir_defaulted=no
fi
if test ! -r $srcdir/$ac_unique_file; then
  if test "$ac_srcdir_defaulted" = yes; then
    { echo "configure: error: can not find sources in $ac_confdir or .." 1>&2; exit 1; }
  else
    { echo "configure: error: can not find sources in $srcdir" 1>&2; exit 1; }
  fi
fi
srcdir=`echo "${srcdir}" | sed 's%\([^/]\)/*$%\1%'`

# Prefer explicitly selected file to automatically selected ones.
if test -z "$CONFIG_SITE"; then
  if test "x$prefix" != xNONE; then
    CONFIG_SITE="$prefix/share/config.site $prefix/etc/config.site"
  else
    CONFIG_SITE="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"
  fi
fi
for ac_site_file in $CONFIG_SITE; do
  if test -r "$ac_site_file"; then
    echo "loading site script $ac_site_file"
    . "$ac_site_file"
  fi
done


ac_ext=c
# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
ac_cpp='$CPP $CPPFLAGS'
ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
cross_compiling=$ac_cv_prog_cc_cross

if (echo "testing\c"; echo 1,2,3) | grep c >/dev/null; then
  # Stardent Vistra SVR4 grep lacks -e, says [e-mail].
  if (echo -n testing; echo 1,2,3) | sed s/-n/xn/ | grep xn >/dev/null; then
    ac_n= ac_c='
' ac_t='	'
  else
    ac_n=-n ac_c= ac_t=
  fi
else
  ac_n= ac_c='\c' ac_t=
fi




echo "$ac_t""*** $0: STLport configuration utility ***" 1>&6
if test "${CXXFLAGS}" = ""; then 
echo "$ac_t""* Note: for best reliability - try \"CXXFLAGS=-treat_warnings_as_errors\" $0 " 1>&6
echo "$ac_t""* Please don't forget specifying typical CXXFLAGS you'll be using - " 1>&6 
echo "$ac_t""* such as that enabling exceptions handling" 1>&6
fi
echo "$ac_t""Please stand by while exploring compiler capabilities..." 1>&6
echo "$ac_t""Be patient - that may take a while..." 1>&6
echo "$ac_t""***" 1>&6

# utility function
check_warning () {
    warn_str=`tail -1 config.log | egrep -i "arning|\(W\)"`
    if test "$warn_str" = ""; then
      return 0
    else
     return 1
    fi
}


# Check whether --enable-extension or --disable-extension was given.
if test "${enable_extension+set}" = set; then
  enableval="$enable_extension"
  
case "$enableval" in
	no) echo "$ac_t""Info :.cpp used as extension for tests" 1>&6 
	    ac_ext=cpp 
      	;;
	 *) echo "$ac_t""Argument : .$enableval used as extension" 1>&6 
	ac_ext=$enableval
esac

else
  echo "$ac_t""Info : .cpp used as extension for tests" 1>&6 
	ac_ext=cpp


fi


# Save that, as it is being redefined several times 
use_ac_ext=$ac_ext

for ac_prog in $CCC c++ g++ gcc CC cxx cc++
do
# Extract the first word of "$ac_prog", so it can be a program name with args.
set dummy $ac_prog; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:601: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_prog_CXX'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  if test -n "$CXX"; then
  ac_cv_prog_CXX="$CXX" # Let the user override the test.
else
  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS="${IFS}:"
  for ac_dir in $PATH; do
    test -z "$ac_dir" && ac_dir=.
    if test -f $ac_dir/$ac_word; then
      ac_cv_prog_CXX="$ac_prog"
      break
    fi
  done
  IFS="$ac_save_ifs"
fi
fi
CXX="$ac_cv_prog_CXX"
if test -n "$CXX"; then
  echo "$ac_t""$CXX" 1>&6
else
  echo "$ac_t""no" 1>&6
fi

test -n "$CXX" && break
done
test -n "$CXX" || CXX="gcc"


echo $ac_n "checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works""... $ac_c" 1>&6
echo "configure:632: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works" >&5

ac_ext=C
# CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
ac_link='${CXX-g++} -o conftest $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
cross_compiling=$ac_cv_prog_cxx_cross

cat > conftest.$ac_ext <<EOF
#line 642 "configure"
#include "confdefs.h"
main(){return(0);}
EOF
if { (eval echo configure:646: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
  ac_cv_prog_cxx_works=yes
  # If we can't run a trivial program, we are probably using a cross compiler.
  if (./conftest; exit) 2>/dev/null; then
    ac_cv_prog_cxx_cross=no
  else
    ac_cv_prog_cxx_cross=yes
  fi
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  ac_cv_prog_cxx_works=no
fi
rm -fr conftest*
ac_ext=c
# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
ac_cpp='$CPP $CPPFLAGS'
ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
cross_compiling=$ac_cv_prog_cc_cross

echo "$ac_t""$ac_cv_prog_cxx_works" 1>&6
if test $ac_cv_prog_cxx_works = no; then
  { echo "configure: error: installation or configuration problem: C++ compiler cannot create executables." 1>&2; exit 1; }
fi
echo $ac_n "checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
echo "configure:672: checking whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler" >&5
echo "$ac_t""$ac_cv_prog_cxx_cross" 1>&6
cross_compiling=$ac_cv_prog_cxx_cross

echo $ac_n "checking whether we are using GNU C++""... $ac_c" 1>&6
echo "configure:677: checking whether we are using GNU C++" >&5
if eval "test \"`echo '$''{'ac_cv_prog_gxx'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  cat > conftest.C <<EOF
#ifdef __GNUC__
  yes;
#endif
EOF
if { ac_try='${CXX-g++} -E conftest.C'; { (eval echo configure:686: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
  ac_cv_prog_gxx=yes
else
  ac_cv_prog_gxx=no
fi
fi

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

if test $ac_cv_prog_gxx = yes; then
  GXX=yes
  ac_test_CXXFLAGS="${CXXFLAGS+set}"
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS=
  echo $ac_n "checking whether ${CXX-g++} accepts -g""... $ac_c" 1>&6
echo "configure:701: checking whether ${CXX-g++} accepts -g" >&5
if eval "test \"`echo '$''{'ac_cv_prog_cxx_g'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  echo 'void f(){}' > conftest.cc
if test -z "`${CXX-g++} -g -c conftest.cc 2>&1`"; then
  ac_cv_prog_cxx_g=yes
else
  ac_cv_prog_cxx_g=no
fi
rm -f conftest*

fi

echo "$ac_t""$ac_cv_prog_cxx_g" 1>&6
  if test "$ac_test_CXXFLAGS" = set; then
    CXXFLAGS="$ac_save_CXXFLAGS"
  elif test $ac_cv_prog_cxx_g = yes; then
    CXXFLAGS="-g -O2"
  else
    CXXFLAGS="-O2"
  fi
else
  GXX=
  test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
fi

ac_ext=$use_ac_ext

ac_ext=C
# CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
ac_link='${CXX-g++} -o conftest $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
cross_compiling=$ac_cv_prog_cxx_cross

ac_ext=$use_ac_ext

echo $ac_n "checking size of int""... $ac_c" 1>&6
echo "configure:740: checking size of int" >&5
if eval "test \"`echo '$''{'ac_cv_sizeof_int'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  if test "$cross_compiling" = yes; then
  ac_cv_sizeof_int=4
else
  cat > conftest.$ac_ext <<EOF
#line 748 "configure"
#include "confdefs.h"
#ifdef __cplusplus
extern "C" void exit(int);
#endif
#include <stdio.h>
main()
{
  FILE *f=fopen("conftestval", "w");
  if (!f) exit(1);
  fprintf(f, "%d\n", sizeof(int));
  exit(0);
}
EOF
if { (eval echo configure:762: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
then
  ac_cv_sizeof_int=`cat conftestval`
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -fr conftest*
  ac_cv_sizeof_int=0
fi
rm -fr conftest*
fi

fi
echo "$ac_t""$ac_cv_sizeof_int" 1>&6
cat >> confdefs.h <<EOF
#define SIZEOF_INT $ac_cv_sizeof_int
EOF


ac_ext=$use_ac_ext

if test "$ac_cv_sizeof_int" = "4"; then
  cat >> confdefs.h <<EOF
#define _STLP_UINT32_T unsigned int
EOF

else
  echo $ac_n "checking size of long""... $ac_c" 1>&6
echo "configure:790: checking size of long" >&5
if eval "test \"`echo '$''{'ac_cv_sizeof_long'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  if test "$cross_compiling" = yes; then
  ac_cv_sizeof_long=4
else
  cat > conftest.$ac_ext <<EOF
#line 798 "configure"
#include "confdefs.h"
#ifdef __cplusplus
extern "C" void exit(int);
#endif
#include <stdio.h>
main()
{
  FILE *f=fopen("conftestval", "w");
  if (!f) exit(1);
  fprintf(f, "%d\n", sizeof(long));
  exit(0);
}
EOF
if { (eval echo configure:812: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
then
  ac_cv_sizeof_long=`cat conftestval`
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -fr conftest*
  ac_cv_sizeof_long=0
fi
rm -fr conftest*
fi

fi
echo "$ac_t""$ac_cv_sizeof_long" 1>&6
cat >> confdefs.h <<EOF
#define SIZEOF_LONG $ac_cv_sizeof_long
EOF


  ac_ext=$use_ac_ext
  if test "$ac_cv_sizeof_long" = "4"; then
    cat >> confdefs.h <<EOF
#define _STLP_UINT32_T unsigned long
EOF

  else
      echo $ac_n "checking size of short""... $ac_c" 1>&6
echo "configure:839: checking size of short" >&5
if eval "test \"`echo '$''{'ac_cv_sizeof_short'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  if test "$cross_compiling" = yes; then
  ac_cv_sizeof_short=4
else
  cat > conftest.$ac_ext <<EOF
#line 847 "configure"
#include "confdefs.h"
#ifdef __cplusplus
extern "C" void exit(int);
#endif
#include <stdio.h>
main()
{
  FILE *f=fopen("conftestval", "w");
  if (!f) exit(1);
  fprintf(f, "%d\n", sizeof(short));
  exit(0);
}
EOF
if { (eval echo configure:861: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
then
  ac_cv_sizeof_short=`cat conftestval`
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -fr conftest*
  ac_cv_sizeof_short=0
fi
rm -fr conftest*
fi

fi
echo "$ac_t""$ac_cv_sizeof_short" 1>&6
cat >> confdefs.h <<EOF
#define SIZEOF_SHORT $ac_cv_sizeof_short
EOF


    if test "$ac_cv_sizeof_short" = "4"; then
      cat >> confdefs.h <<EOF
#define _STLP_UINT32_T unsigned short
EOF

    else
      { echo "configure: error: Cannot find any 32-bit integer type for your compiler" 1>&2; exit 1; }
    fi
  ac_ext=$use_ac_ext
  fi
fi
ac_ext=$use_ac_ext


if test "$ac_cv_c_cross" = "yes"; then
  CXXFLAGS="${CXXFLAGS} -c"
fi

ac_ext=$use_ac_ext

echo $ac_n "checking for basic STL compatibility""... $ac_c" 1>&6
echo "configure:901: checking for basic STL compatibility" >&5
cat > conftest.$ac_ext <<EOF
#line 903 "configure"
#include "confdefs.h"

template <class Arg1, class Arg2, class Result>
struct binary_function {
    typedef Arg1 first_argument_type;
    typedef Arg2 second_argument_type;
    typedef Result result_type;
};      
template <class T>
struct plus : public binary_function<T, T, T> {
    T operator()(const T& x, const T& y) const;
};

template <class T>
T plus<T>::operator()(const T& x, const T& y) const { return x + y; }
plus<int> p;

int main() {

; return 0; }
EOF
if { (eval echo configure:925: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
  rm -rf conftest*
  ac_cv_compat="yes"
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -rf conftest*
  { echo "configure: error: Your compiler won't be able to compile this implementation. Sorry." 1>&2; exit 1; } 
 ac_cv_compat="no"

fi
rm -f conftest*
echo "$ac_t""$ac_cv_compat" 1>&6

echo $ac_n "checking for partial specialization syntax""... $ac_c" 1>&6
echo "configure:940: checking for partial specialization syntax" >&5
cat > conftest.$ac_ext <<EOF
#line 942 "configure"
#include "confdefs.h"

     template <class T> class fs_foo {};