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Date: Fri, 16 Jul 1999 21:59:06 -0400
From: John Fortin <fortinj AT ibm DOT net>
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To: "cygwin-developers AT sourceware DOT cygnus DOT com" 
 <cygwin-developers AT sourceware DOT cygnus DOT com>
CC: Mumit Khan <khan AT xraylith DOT wisc DOT EDU>
Subject: _ctype_ not exported by cygwin1.dll ??
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I seen this topic discussed, read the archives and I am still confused
about _ctype_

I see that in ctype.h _ctype_ is as follows...

#if !defined(__CYGWIN32__) || defined(__INSIDE_CYGWIN__) ||
defined(_COMPILING_NEWLIB)
extern	_CONST char	_ctype_[];
#else
extern	_CONST char	_ctype_[] __declspec(dllimport);
#endif

I take this to mean that for compiled programs, _ctype_ is exported from
cygwin1.dll

I looked at both the dll and the export library and _ctype_ seems to be
there.

I am using the newest snapshots for winsup (July 5 ) and newlib ( July 3
)

So I can't explain the following....


~/devel/: g++ -o inode-test.exe inode-test.cc
/CYGNUS/CYGWIN~1/H-I586~1/BIN/../lib/gcc-lib/i586-cygwin32/2.95/libstdc++.a(iost
ream.o): In function `skip_ws(streambuf *)':
/homes/khan/src/gcc-2.95/CYGB20/i586-cygwin32/libio/../../../libio/iostream.cc:6
6: undefined reference to `_ctype_'
/CYGNUS/CYGWIN~1/H-I586~1/BIN/../lib/gcc-lib/i586-cygwin32/2.95/libstdc++.a(iost
ream.o): In function `istream::_rs(char *)':
/homes/khan/src/gcc-2.95/CYGB20/i586-cygwin32/libio/../../../libio/iostream.cc:2
12: undefined reference to `_ctype_'
/CYGNUS/CYGWIN~1/H-I586~1/BIN/../lib/gcc-lib/i586-cygwin32/2.95/libstdc++.a(iovf
scanf.o): In function `IO_vfscanf':
/homes/khan/src/gcc-2.95/CYGB20/i586-cygwin32/libio/../../../libio/iovfscanf.c:1
56: undefined reference to `_ctype_'
/homes/khan/src/gcc-2.95/CYGB20/i586-cygwin32/libio/../../../libio/iovfscanf.c:1
63: undefined reference to `_ctype_'
/homes/khan/src/gcc-2.95/CYGB20/i586-cygwin32/libio/../../../libio/iovfscanf.c:3
10: undefined reference to `_ctype_'
/CYGNUS/CYGWIN~1/H-I586~1/BIN/../lib/gcc-lib/i586-cygwin32/2.95/libstdc++.a(iovf
scanf.o):/homes/khan/src/gcc-2.95/CYGB20/i586-cygwin32/libio/../../../libio/iovf
scanf.c:330: more undefined references to `_ctype_' follow
collect2: ld returned 1 exit status
~/devel/:



where inode-test.cc is the following from Mumit Khan..
// inode-test.c: Find the inode given a file.

#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <cstdio>
#include <iostream>

using namespace std;

int
main (int argc, char *argv[])
{
   for (int i = 1; i < argc; i++)
     {
       struct stat buf1, buf2;
       const char *path = argv[i];
       cout << "File: " << path << endl;

       int result = stat (path, &buf1);

       if (result == 0)
         {
           cout << "  STAT() reports:" << endl << "  ================"
<< endl;
           cout << "    st_mode = " << buf1.st_mode << endl;
           cout << "    st_ino = " << buf1.st_ino << endl;
           cout << "    st_dev = " << buf1.st_dev << endl;
           cout << "    st_nlink = " << buf1.st_nlink << endl;
           cout << "    st_uid = " << buf1.st_uid << endl;
           cout << "    st_gid = " << buf1.st_gid << endl;
           cout << "    st_size = " << buf1.st_size << endl;
           cout << "    st_rdev = " << buf1.st_rdev << endl;
           cout << "    st_blksize = " << buf1.st_blksize << endl;
           cout << "    st_blocks = " << buf1.st_blocks << endl;
         }
       else
         {
           cerr << "cannot stat " << path;
           perror ("stat");
         }

       result = lstat (path, &buf2);

       if (result == 0)
         {
           cout << "  LSTAT() reports:" << endl << "  ================"
<< endl;
           cout << "    st_mode = " << buf2.st_mode << endl;
           cout << "    st_ino = " << buf2.st_ino << endl;
           cout << "    st_dev = " << buf2.st_dev << endl;
           cout << "    st_nlink = " << buf2.st_nlink << endl;
           cout << "    st_uid = " << buf2.st_uid << endl;
           cout << "    st_gid = " << buf2.st_gid << endl;
           cout << "    st_size = " << buf2.st_size << endl;
           cout << "    st_rdev = " << buf2.st_rdev << endl;
           cout << "    st_blksize = " << buf2.st_blksize << endl;
           cout << "    st_blocks = " << buf2.st_blocks << endl;
         }
       else
         {
           cerr << "cannot lstat " << path;
           perror ("lstat");
         }
     }
  return 0;
}