configure:9314: checking for working mmap
configure:9461: gcc -o conftest.exe -g -O2     conftest.c  >&5 
configure:9461: $? = 0
configure:9461: ./conftest.exe
./configure: line 2146:  6404 Segmentation fault      (core dumped) ./conftest$ac_exeext
configure:9461: $? = 139
configure: program exited with status 139
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME "emacs"
| #define PACKAGE_TARNAME "emacs"
| #define PACKAGE_VERSION "24.0.50"
| #define PACKAGE_STRING "emacs 24.0.50"
| #define PACKAGE_BUGREPORT ""
| #define PACKAGE_URL ""
| #define PACKAGE "emacs"
| #define VERSION "24.0.50"
| #define MAIL_USE_POP 1
| #define SYNC_INPUT 1
| #define STDC_HEADERS 1
| #define HAVE_SYS_TYPES_H 1
| #define HAVE_SYS_STAT_H 1
| #define HAVE_STDLIB_H 1
| #define HAVE_STRING_H 1
| #define HAVE_MEMORY_H 1
| #define HAVE_STRINGS_H 1
| #define HAVE_INTTYPES_H 1
| #define HAVE_STDINT_H 1
| #define HAVE_UNISTD_H 1
| #define __EXTENSIONS__ 1
| #define _ALL_SOURCE 1
| #define _GNU_SOURCE 1
| #define _POSIX_PTHREAD_SEMANTICS 1
| #define _TANDEM_SOURCE 1
| #define HAVE_SYS_SOUNDCARD_H 1
| #define HAVE_SYS_SELECT_H 1
| #define HAVE_SYS_TIME_H 1
| #define HAVE_UNISTD_H 1
| #define HAVE_UTIME_H 1
| #define HAVE_LIMITS_H 1
| #define HAVE_FCNTL_H 1
| #define HAVE_PTY_H 1
| #define HAVE_SYS_MMAN_H 1
| #define HAVE_SYS_RESOURCE_H 1
| #define HAVE_LOCALE_H 1
| #define HAVE_SYS_UTSNAME_H 1
| #define HAVE_PWD_H 1
| #define HAVE_UTMP_H 1
| #define HAVE_DIRENT_H 1
| #define STDC_HEADERS 1
| #define TIME_WITH_SYS_TIME 1
| #define HAVE_DECL_SYS_SIGLIST 0
| #define HAVE_DECL___SYS_SIGLIST 0
| #define HAVE_SYS_WAIT_H 1
| #define HAVE_STRUCT_UTIMBUF 1
| #define RETSIGTYPE void
| #define HAVE_SPEED_T 1
| #define HAVE_TIMEVAL 1
| #define HAVE_SYS_SOCKET_H 1
| #define HAVE_NET_IF_H 1
| #define HAVE_DECL_TZNAME 1
| #define HAVE_TZNAME 1
| #define HAVE_STRUCT_IFREQ_IFR_FLAGS 1
| #define HAVE_STRUCT_IFREQ_IFR_HWADDR 1
| #define HAVE_STRUCT_IFREQ_IFR_NETMASK 1
| #define HAVE_STRUCT_IFREQ_IFR_BROADADDR 1
| #define HAVE_STRUCT_IFREQ_IFR_ADDR 1
| #define PROTOTYPES 1
| #define __PROTOTYPES 1
| #define POINTER_TYPE void
| #define HAVE_ATTRIBUTE_ALIGNED 1
| #define HAVE_LONG_FILE_NAMES 1
| #define HAVE_STDLIB_H 1
| #define HAVE_UNISTD_H 1
| #define HAVE_SYS_PARAM_H 1
| #define HAVE_GETOPT_H 1
| #define HAVE_WCHAR_H 1
| #define HAVE_STDINT_H 1
| #define HAVE_SYS_STAT_H 1
| #define HAVE_SYS_TIME_H 1
| #define HAVE_GETPAGESIZE 1
| /* end confdefs.h.  */
| #include <stdio.h>
| #ifdef HAVE_SYS_TYPES_H
| # include <sys/types.h>
| #endif
| #ifdef HAVE_SYS_STAT_H
| # include <sys/stat.h>
| #endif
| #ifdef STDC_HEADERS
| # include <stdlib.h>
| # include <stddef.h>
| #else
| # ifdef HAVE_STDLIB_H
| #  include <stdlib.h>
| # endif
| #endif
| #ifdef HAVE_STRING_H
| # if !defined STDC_HEADERS && defined HAVE_MEMORY_H
| #  include <memory.h>
| # endif
| # include <string.h>
| #endif
| #ifdef HAVE_STRINGS_H
| # include <strings.h>
| #endif
| #ifdef HAVE_INTTYPES_H
| # include <inttypes.h>
| #endif
| #ifdef HAVE_STDINT_H
| # include <stdint.h>
| #endif
| #ifdef HAVE_UNISTD_H
| # include <unistd.h>
| #endif
| /* malloc might have been renamed as rpl_malloc. */
| #undef malloc
| 
| /* Thanks to Mike Haertel and Jim Avera for this test.
|    Here is a matrix of mmap possibilities:
| 	mmap private not fixed
| 	mmap private fixed at somewhere currently unmapped
| 	mmap private fixed at somewhere already mapped
| 	mmap shared not fixed
| 	mmap shared fixed at somewhere currently unmapped
| 	mmap shared fixed at somewhere already mapped
|    For private mappings, we should verify that changes cannot be read()
|    back from the file, nor mmap's back from the file at a different
|    address.  (There have been systems where private was not correctly
|    implemented like the infamous i386 svr4.0, and systems where the
|    VM page cache was not coherent with the file system buffer cache
|    like early versions of FreeBSD and possibly contemporary NetBSD.)
|    For shared mappings, we should conversely verify that changes get
|    propagated back to all the places they're supposed to be.
| 
|    Grep wants private fixed already mapped.
|    The main things grep needs to know about mmap are:
|    * does it exist and is it safe to write into the mmap'd area
|    * how to use it (BSD variants)  */
| 
| #include <fcntl.h>
| #include <sys/mman.h>
| 
| #if !defined STDC_HEADERS && !defined HAVE_STDLIB_H
| char *malloc ();
| #endif
| 
| /* This mess was copied from the GNU getpagesize.h.  */
| #ifndef HAVE_GETPAGESIZE
| # ifdef _SC_PAGESIZE
| #  define getpagesize() sysconf(_SC_PAGESIZE)
| # else /* no _SC_PAGESIZE */
| #  ifdef HAVE_SYS_PARAM_H
| #   include <sys/param.h>
| #   ifdef EXEC_PAGESIZE
| #    define getpagesize() EXEC_PAGESIZE
| #   else /* no EXEC_PAGESIZE */
| #    ifdef NBPG
| #     define getpagesize() NBPG * CLSIZE
| #     ifndef CLSIZE
| #      define CLSIZE 1
| #     endif /* no CLSIZE */
| #    else /* no NBPG */
| #     ifdef NBPC
| #      define getpagesize() NBPC
| #     else /* no NBPC */
| #      ifdef PAGESIZE
| #       define getpagesize() PAGESIZE
| #      endif /* PAGESIZE */
| #     endif /* no NBPC */
| #    endif /* no NBPG */
| #   endif /* no EXEC_PAGESIZE */
| #  else /* no HAVE_SYS_PARAM_H */
| #   define getpagesize() 8192	/* punt totally */
| #  endif /* no HAVE_SYS_PARAM_H */
| # endif /* no _SC_PAGESIZE */
| 
| #endif /* no HAVE_GETPAGESIZE */
| 
| int
| main ()
| {
|   char *data, *data2, *data3;
|   const char *cdata2;
|   int i, pagesize;
|   int fd, fd2;
| 
|   pagesize = getpagesize ();
| 
|   /* First, make a file with some known garbage in it. */
|   data = (char *) malloc (pagesize);
|   if (!data)
|     return 1;
|   for (i = 0; i < pagesize; ++i)
|     *(data + i) = rand ();
|   umask (0);
|   fd = creat ("conftest.mmap", 0600);
|   if (fd < 0)
|     return 2;
|   if (write (fd, data, pagesize) != pagesize)
|     return 3;
|   close (fd);
| 
|   /* Next, check that the tail of a page is zero-filled.  File must have
|      non-zero length, otherwise we risk SIGBUS for entire page.  */
|   fd2 = open ("conftest.txt", O_RDWR | O_CREAT | O_TRUNC, 0600);
|   if (fd2 < 0)
|     return 4;
|   cdata2 = "";
|   if (write (fd2, cdata2, 1) != 1)
|     return 5;
|   data2 = (char *) mmap (0, pagesize, PROT_READ | PROT_WRITE, MAP_SHARED, fd2, 0L);
|   if (data2 == MAP_FAILED)
|     return 6;
|   for (i = 0; i < pagesize; ++i)
|     if (*(data2 + i))
|       return 7;
|   close (fd2);
|   if (munmap (data2, pagesize))
|     return 8;
| 
|   /* Next, try to mmap the file at a fixed address which already has
|      something else allocated at it.  If we can, also make sure that
|      we see the same garbage.  */
|   fd = open ("conftest.mmap", O_RDWR);
|   if (fd < 0)
|     return 9;
|   if (data2 != mmap (data2, pagesize, PROT_READ | PROT_WRITE,
| 		     MAP_PRIVATE | MAP_FIXED, fd, 0L))
|     return 10;
|   for (i = 0; i < pagesize; ++i)
|     if (*(data + i) != *(data2 + i))
|       return 11;
| 
|   /* Finally, make sure that changes to the mapped area do not
|      percolate back to the file as seen by read().  (This is a bug on
|      some variants of i386 svr4.0.)  */
|   for (i = 0; i < pagesize; ++i)
|     *(data2 + i) = *(data2 + i) + 1;
|   data3 = (char *) malloc (pagesize);
|   if (!data3)
|     return 12;
|   if (read (fd, data3, pagesize) != pagesize)
|     return 13;
|   for (i = 0; i < pagesize; ++i)
|     if (*(data + i) != *(data3 + i))
|       return 14;
|   close (fd);
|   return 0;
| }
configure:9471: result: no