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binutils-gdb/bfd/config.in
Rainer Orth c8693053f8 Unify Solaris procfs and largefile handling 
GDB currently doesn't build on 32-bit Solaris:

* On Solaris 11.4/x86:

In file included from /usr/include/sys/procfs.h:26,
                 from /vol/src/gnu/gdb/hg/master/dist/gdb/i386-sol2-nat.c:24:
/usr/include/sys/old_procfs.h:31:2: error: #error "Cannot use procfs in the large file compilation environment"
 #error "Cannot use procfs in the large file compilation environment"
  ^~~~~

* On Solaris 11.3/x86 there are several more instances of this.

The interaction between procfs and large-file support historically has
been a royal mess on Solaris:

* There are two versions of the procfs interface:

** The old ioctl-based /proc, deprecated and not used any longer in
   either gdb or binutils.

** The `new' (introduced in Solaris 2.6, 1997) structured /proc.

* There are two headers one can possibly include:

** <procfs.h> which only provides the structured /proc, definining
   _STRUCTURED_PROC=1 and then including ...

** <sys/procfs.h> which defaults to _STRUCTURED_PROC=0, the ioctl-based
   /proc, but provides structured /proc if _STRUCTURED_PROC == 1.

* procfs and the large-file environment didn't go well together:

** Until Solaris 11.3, <sys/procfs.h> would always #error in 32-bit
   compilations when the large-file environment was active
   (_FILE_OFFSET_BITS == 64).

** In both Solaris 11.4 and Illumos, this restriction was lifted for
   structured /proc.

So one has to be careful always to define _STRUCTURED_PROC=1 when
testing for or using <sys/procfs.h> on Solaris.  As the errors above
show, this isn't always the case in binutils-gdb right now.

Also one may need to disable large-file support for 32-bit compilations
on Solaris.  config/largefile.m4 meant to do this by wrapping the
AC_SYS_LARGEFILE autoconf macro with appropriate checks, yielding
ACX_LARGEFILE.  Unfortunately the macro doesn't always succeed because
it neglects the _STRUCTURED_PROC part.

To make things even worse, since GCC 9 g++ predefines
_FILE_OFFSET_BITS=64 on Solaris.  So even if largefile.m4 deciced not to
enable large-file support, this has no effect, breaking the gdb build.

This patch addresses all this as follows:

* All tests for the <sys/procfs.h> header are made with
  _STRUCTURED_PROC=1, the definition going into the various config.h
  files instead of having to make them (and sometimes failing) in the
  affected sources.

* To cope with the g++ predefine of _FILE_OFFSET_BITS=64,
  -U_FILE_OFFSET_BITS is added to various *_CPPFLAGS variables.  It had
  been far easier to have just

  #undef _FILE_OFFSET_BITS

  in config.h, but unfortunately such a construct in config.in is
  commented by config.status irrespective of indentation and whitespace
  if large-file support is disabled.  I found no way around this and
  putting the #undef in several global headers for bfd, binutils, ld,
  and gdb seemed way more invasive.

* Last, the applicability check in largefile.m4 was modified only to
  disable largefile support if really needed.  To do so, it checks if
  <sys/procfs.h> compiles with _FILE_OFFSET_BITS=64 defined.  If it
  doesn't, the disabling only happens if gdb exists in-tree and isn't
  disabled, otherwise (building binutils from a tarball), there's no
  conflict.

  What initially confused me was the check for $plugins here, which
  originally caused the disabling not to take place.  Since AC_PLUGINGS
  does enable plugin support if <dlfcn.h> exists (which it does on
  Solaris), the disabling never happened.

  I could find no explanation why the linker plugin needs large-file
  support but thought it would be enough if gld and GCC's lto-plugin
  agreed on the _FILE_OFFSET_BITS value.  Unfortunately, that's not
  enough: lto-plugin uses the simple-object interface from libiberty,
  which includes off_t arguments.  So to fully disable large-file
  support would mean also disabling it in libiberty and its users: gcc
  and libstdc++-v3.  This seems highly undesirable, so I decided to
  disable the linker plugin instead if large-file support won't work.

The patch allows binutils+gdb to build on i386-pc-solaris2.11 (both
Solaris 11.3 and 11.4, using GCC 9.3.0 which is the worst case due to
predefined _FILE_OFFSET_BITS=64).  Also regtested on
amd64-pc-solaris2.11 (again on Solaris 11.3 and 11.4),
x86_64-pc-linux-gnu and i686-pc-linux-gnu.

	config:
	* largefile.m4 (ACX_LARGEFILE) <sparc-*-solaris*|i?86-*-solaris*>:
	Check for <sys/procfs.h> incompatilibity with large-file support
	on Solaris.
	Only disable large-file support and perhaps plugins if needed.
	Set, substitute LARGEFILE_CPPFLAGS if so.

	bfd:
	* bfd.m4 (BFD_SYS_PROCFS_H): New macro.
	(BFD_HAVE_SYS_PROCFS_TYPE): Require BFD_SYS_PROCFS_H.
	Don't define _STRUCTURED_PROC.
	(BFD_HAVE_SYS_PROCFS_TYPE_MEMBER): Likewise.
	* elf.c [HAVE_SYS_PROCFS_H] (_STRUCTURED_PROC): Don't define.
	* configure.ac: Use BFD_SYS_PROCFS_H to check for <sys/procfs.h>.
	* configure, config.in: Regenerate.
	* Makefile.am (AM_CPPFLAGS): Add LARGEFILE_CPPFLAGS.
	* Makefile.in, doc/Makefile.in: Regenerate.

	binutils:
	* Makefile.am (AM_CPPFLAGS): Add LARGEFILE_CPPFLAGS.
	* Makefile.in, doc/Makefile.in: Regenerate.
	* configure: Regenerate.

	gas:
	* Makefile.am (AM_CPPFLAGS): Add LARGEFILE_CPPFLAGS.
	* Makefile.in, doc/Makefile.in: Regenerate.
	* configure: Regenerate.

	gdb:
	* proc-api.c (_STRUCTURED_PROC): Don't define.
	* proc-events.c: Likewise.
	* proc-flags.c: Likewise.
	* proc-why.c: Likewise.
	* procfs.c: Likewise.

	* Makefile.in (INTERNAL_CPPFLAGS): Add LARGEFILE_CPPFLAGS.
	* configure, config.in: Regenerate.

	gdbserver:
	* configure, config.in: Regenerate.

	gdbsupport:
	* Makefile.am (AM_CPPFLAGS): Add LARGEFILE_CPPFLAGS.
	* common.m4 (GDB_AC_COMMON): Use BFD_SYS_PROCFS_H to check for
	<sys/procfs.h>.
	* Makefile.in: Regenerate.
	* configure, config.in: Regenerate.

	gnulib:
	* configure.ac: Run ACX_LARGEFILE before gl_EARLY.
	* configure: Regenerate.

	gprof:
	* Makefile.am (AM_CPPFLAGS): Add LARGEFILE_CPPFLAGS.
	* Makefile.in: Regenerate.
	* configure: Regenerate.

	ld:
	* Makefile.am (AM_CPPFLAGS): Add LARGEFILE_CPPFLAGS.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
2020-07-30 15:41:50 +02:00

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/* config.in. Generated from configure.ac by autoheader. */
/* Check that config.h is #included before system headers
(this works only for glibc, but that should be enough). */
#if defined(__GLIBC__) && !defined(__FreeBSD_kernel__) && !defined(__CONFIG_H__)
# error config.h must be #included before system headers
#endif
#define __CONFIG_H__ 1
/* Name of host specific core header file to include in elf.c. */
#undef CORE_HEADER
/* Define to 1 if you want to enable -z separate-code in ELF linker by
default. */
#undef DEFAULT_LD_Z_SEPARATE_CODE
/* Define to 1 if translation of program messages to the user's native
language is requested. */
#undef ENABLE_NLS
/* Define to 1 if you have the <alloca.h> header file. */
#undef HAVE_ALLOCA_H
/* Define to 1 if you have the declaration of `asprintf', and to 0 if you
don't. */
#undef HAVE_DECL_ASPRINTF
/* Define to 1 if you have the declaration of `basename', and to 0 if you
don't. */
#undef HAVE_DECL_BASENAME
/* Define to 1 if you have the declaration of `ffs', and to 0 if you don't. */
#undef HAVE_DECL_FFS
/* Define to 1 if you have the declaration of `free', and to 0 if you don't.
*/
#undef HAVE_DECL_FREE
/* Define to 1 if you have the declaration of `fseeko', and to 0 if you don't.
*/
#undef HAVE_DECL_FSEEKO
/* Define to 1 if you have the declaration of `fseeko64', and to 0 if you
don't. */
#undef HAVE_DECL_FSEEKO64
/* Define to 1 if you have the declaration of `ftello', and to 0 if you don't.
*/
#undef HAVE_DECL_FTELLO
/* Define to 1 if you have the declaration of `ftello64', and to 0 if you
don't. */
#undef HAVE_DECL_FTELLO64
/* Define to 1 if you have the declaration of `getenv', and to 0 if you don't.
*/
#undef HAVE_DECL_GETENV
/* Define to 1 if you have the declaration of `malloc', and to 0 if you don't.
*/
#undef HAVE_DECL_MALLOC
/* Define to 1 if you have the declaration of `realloc', and to 0 if you
don't. */
#undef HAVE_DECL_REALLOC
/* Define to 1 if you have the declaration of `snprintf', and to 0 if you
don't. */
#undef HAVE_DECL_SNPRINTF
/* Define to 1 if you have the declaration of `stpcpy', and to 0 if you don't.
*/
#undef HAVE_DECL_STPCPY
/* Define to 1 if you have the declaration of `strnlen', and to 0 if you
don't. */
#undef HAVE_DECL_STRNLEN
/* Define to 1 if you have the declaration of `strstr', and to 0 if you don't.
*/
#undef HAVE_DECL_STRSTR
/* Define to 1 if you have the declaration of `vasprintf', and to 0 if you
don't. */
#undef HAVE_DECL_VASPRINTF
/* Define to 1 if you have the declaration of `vsnprintf', and to 0 if you
don't. */
#undef HAVE_DECL_VSNPRINTF
/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
*/
#undef HAVE_DIRENT_H
/* Define to 1 if you have the <dlfcn.h> header file. */
#undef HAVE_DLFCN_H
/* Define to 1 if you have the `fcntl' function. */
#undef HAVE_FCNTL
/* Define to 1 if you have the <fcntl.h> header file. */
#undef HAVE_FCNTL_H
/* Define to 1 if you have the `fdopen' function. */
#undef HAVE_FDOPEN
/* Define to 1 if you have the `fileno' function. */
#undef HAVE_FILENO
/* Define to 1 if you have the `fls' function. */
#undef HAVE_FLS
/* Define to 1 if you have the `fopen64' function. */
#undef HAVE_FOPEN64
/* Define to 1 if you have the `fseeko' function. */
#undef HAVE_FSEEKO
/* Define to 1 if you have the `fseeko64' function. */
#undef HAVE_FSEEKO64
/* Define to 1 if you have the `ftello' function. */
#undef HAVE_FTELLO
/* Define to 1 if you have the `ftello64' function. */
#undef HAVE_FTELLO64
/* Define to 1 if you have the `getgid' function. */
#undef HAVE_GETGID
/* Define to 1 if you have the `getpagesize' function. */
#undef HAVE_GETPAGESIZE
/* Define to 1 if you have the `getrlimit' function. */
#undef HAVE_GETRLIMIT
/* Define to 1 if you have the `getuid' function. */
#undef HAVE_GETUID
/* Define if your compiler supports hidden visibility. */
#undef HAVE_HIDDEN
/* Define to 1 if you have the <inttypes.h> header file. */
#undef HAVE_INTTYPES_H
/* Define to 1 if the system has the type `long double'. */
#undef HAVE_LONG_DOUBLE
/* Define to 1 if the system has the type `long long'. */
#undef HAVE_LONG_LONG
/* Define if <sys/procfs.h> has lwpstatus_t. */
#undef HAVE_LWPSTATUS_T
/* Define if <sys/procfs.h> has lwpstatus_t.pr_context. */
#undef HAVE_LWPSTATUS_T_PR_CONTEXT
/* Define if <sys/procfs.h> has lwpstatus_t.pr_fpreg. */
#undef HAVE_LWPSTATUS_T_PR_FPREG
/* Define if <sys/procfs.h> has lwpstatus_t.pr_reg. */
#undef HAVE_LWPSTATUS_T_PR_REG
/* Define if <sys/procfs.h> has lwpxstatus_t. */
#undef HAVE_LWPXSTATUS_T
/* Define to 1 if you have the `madvise' function. */
#undef HAVE_MADVISE
/* Define to 1 if you have the <memory.h> header file. */
#undef HAVE_MEMORY_H
/* Define to 1 if you have a working `mmap' system call. */
#undef HAVE_MMAP
/* Define to 1 if you have the `mprotect' function. */
#undef HAVE_MPROTECT
/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
#undef HAVE_NDIR_H
/* Define if <sys/procfs.h> has prpsinfo32_t. */
#undef HAVE_PRPSINFO32_T
/* Define if <sys/procfs.h> has prpsinfo32_t.pr_pid. */
#undef HAVE_PRPSINFO32_T_PR_PID
/* Define if <sys/procfs.h> has prpsinfo_t. */
#undef HAVE_PRPSINFO_T
/* Define if <sys/procfs.h> has prpsinfo_t.pr_pid. */
#undef HAVE_PRPSINFO_T_PR_PID
/* Define if <sys/procfs.h> has prstatus32_t. */
#undef HAVE_PRSTATUS32_T
/* Define if <sys/procfs.h> has prstatus32_t.pr_who. */
#undef HAVE_PRSTATUS32_T_PR_WHO
/* Define if <sys/procfs.h> has prstatus_t. */
#undef HAVE_PRSTATUS_T
/* Define if <sys/procfs.h> has prstatus_t.pr_who. */
#undef HAVE_PRSTATUS_T_PR_WHO
/* Define if <sys/procfs.h> has psinfo32_t. */
#undef HAVE_PSINFO32_T
/* Define if <sys/procfs.h> has psinfo32_t.pr_pid. */
#undef HAVE_PSINFO32_T_PR_PID
/* Define if <sys/procfs.h> has psinfo_t. */
#undef HAVE_PSINFO_T
/* Define if <sys/procfs.h> has psinfo_t.pr_pid. */
#undef HAVE_PSINFO_T_PR_PID
/* Define if <sys/procfs.h> has pstatus32_t. */
#undef HAVE_PSTATUS32_T
/* Define if <sys/procfs.h> has pstatus_t. */
#undef HAVE_PSTATUS_T
/* Define if <sys/procfs.h> has pxstatus_t. */
#undef HAVE_PXSTATUS_T
/* Define to 1 if you have the `setitimer' function. */
#undef HAVE_SETITIMER
/* Define to 1 if you have the <stddef.h> header file. */
#undef HAVE_STDDEF_H
/* Define to 1 if you have the <stdint.h> header file. */
#undef HAVE_STDINT_H
/* Define to 1 if you have the <stdlib.h> header file. */
#undef HAVE_STDLIB_H
/* Define to 1 if you have the <strings.h> header file. */
#undef HAVE_STRINGS_H
/* Define to 1 if you have the <string.h> header file. */
#undef HAVE_STRING_H
/* Define to 1 if you have the `strtoull' function. */
#undef HAVE_STRTOULL
/* Define if struct core_dumpx has member c_impl */
#undef HAVE_ST_C_IMPL
/* Define to 1 if you have the `sysconf' function. */
#undef HAVE_SYSCONF
/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
*/
#undef HAVE_SYS_DIR_H
/* Define to 1 if you have the <sys/file.h> header file. */
#undef HAVE_SYS_FILE_H
/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
*/
#undef HAVE_SYS_NDIR_H
/* Define to 1 if you have the <sys/param.h> header file. */
#undef HAVE_SYS_PARAM_H
/* Define to 1 if you have the <sys/procfs.h> header file. */
#undef HAVE_SYS_PROCFS_H
/* Define to 1 if you have the <sys/resource.h> header file. */
#undef HAVE_SYS_RESOURCE_H
/* Define to 1 if you have the <sys/stat.h> header file. */
#undef HAVE_SYS_STAT_H
/* Define to 1 if you have the <sys/time.h> header file. */
#undef HAVE_SYS_TIME_H
/* Define to 1 if you have the <sys/types.h> header file. */
#undef HAVE_SYS_TYPES_H
/* Define to 1 if you have the <time.h> header file. */
#undef HAVE_TIME_H
/* Define to 1 if you have the <unistd.h> header file. */
#undef HAVE_UNISTD_H
/* Define to 1 if you have the <wchar.h> header file. */
#undef HAVE_WCHAR_H
/* Define to 1 if you have the <wctype.h> header file. */
#undef HAVE_WCTYPE_H
/* Define if <sys/procfs.h> has win32_pstatus_t. */
#undef HAVE_WIN32_PSTATUS_T
/* Define to 1 if you have the <windows.h> header file. */
#undef HAVE_WINDOWS_H
/* Define to the sub-directory in which libtool stores uninstalled libraries.
*/
#undef LT_OBJDIR
/* Name of package */
#undef PACKAGE
/* Define to the address where bug reports for this package should be sent. */
#undef PACKAGE_BUGREPORT
/* Define to the full name of this package. */
#undef PACKAGE_NAME
/* Define to the full name and version of this package. */
#undef PACKAGE_STRING
/* Define to the one symbol short name of this package. */
#undef PACKAGE_TARNAME
/* Define to the home page for this package. */
#undef PACKAGE_URL
/* Define to the version of this package. */
#undef PACKAGE_VERSION
/* The size of `char', as computed by sizeof. */
#undef SIZEOF_CHAR
/* The size of `int', as computed by sizeof. */
#undef SIZEOF_INT
/* The size of `long', as computed by sizeof. */
#undef SIZEOF_LONG
/* The size of `long long', as computed by sizeof. */
#undef SIZEOF_LONG_LONG
/* The size of `off_t', as computed by sizeof. */
#undef SIZEOF_OFF_T
/* The size of `short', as computed by sizeof. */
#undef SIZEOF_SHORT
/* The size of `void *', as computed by sizeof. */
#undef SIZEOF_VOID_P
/* Define to 1 if you have the ANSI C header files. */
#undef STDC_HEADERS
/* Define if you can safely include both <string.h> and <strings.h>. */
#undef STRING_WITH_STRINGS
/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
#undef TIME_WITH_SYS_TIME
/* Name of host specific header file to include in trad-core.c. */
#undef TRAD_HEADER
/* Define if 64-bit archives should always be used. */
#undef USE_64_BIT_ARCHIVE
/* Use b modifier when opening binary files? */
#undef USE_BINARY_FOPEN
/* Define if we should use leading underscore on 64 bit mingw targets */
#undef USE_MINGW64_LEADING_UNDERSCORES
/* Use mmap if it's available? */
#undef USE_MMAP
/* Define if we should default to creating read-only plt entries */
#undef USE_SECUREPLT
/* Enable extensions on AIX 3, Interix. */
#ifndef _ALL_SOURCE
# undef _ALL_SOURCE
#endif
/* Enable GNU extensions on systems that have them. */
#ifndef _GNU_SOURCE
# undef _GNU_SOURCE
#endif
/* Enable threading extensions on Solaris. */
#ifndef _POSIX_PTHREAD_SEMANTICS
# undef _POSIX_PTHREAD_SEMANTICS
#endif
/* Enable extensions on HP NonStop. */
#ifndef _TANDEM_SOURCE
# undef _TANDEM_SOURCE
#endif
/* Enable general extensions on Solaris. */
#ifndef __EXTENSIONS__
# undef __EXTENSIONS__
#endif
/* Version number of package */
#undef VERSION
/* Enable large inode numbers on Mac OS X 10.5. */
#ifndef _DARWIN_USE_64_BIT_INODE
# define _DARWIN_USE_64_BIT_INODE 1
#endif
/* Number of bits in a file offset, on hosts where this is settable. */
#undef _FILE_OFFSET_BITS
/* Define for large files, on AIX-style hosts. */
#undef _LARGE_FILES
/* Define to 1 if on MINIX. */
#undef _MINIX
/* Define to 2 if the system does not provide POSIX.1 features except with
this defined. */
#undef _POSIX_1_SOURCE
/* Define to 1 if you need to in order for `stat' and other things to work. */
#undef _POSIX_SOURCE
/* Use structured /proc on Solaris. */
#undef _STRUCTURED_PROC
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