[3/3] Load system gdbinit files from a directory

Message ID 20190820221745.147370-4-cbiesinger@google.com
State New, archived
Headers

Commit Message

Terekhov, Mikhail via Gdb-patches Aug. 20, 2019, 10:17 p.m. UTC
  gdb/ChangeLog:

2019-08-20  Christian Biesinger  <cbiesinger@google.com>

	* config.in: Add SYSTEM_GDBINIT_DIR.
	* configure: Regenerate.
	* configure.ac: Add new option --with-system-gdbinit-dir.
	* main.c (get_init_files): Change system_gdbinit argument to
	a vector and return the files in SYSTEM_GDBINIT_DIR in
	addition to SYSTEM_GDBINIT.
	(captured_main_1): Update.
	(print_gdb_help): Update.
---
 gdb/config.in    |  3 ++
 gdb/configure    | 77 ++++++++++++++++++++++++++++++++++++++++++++----
 gdb/configure.ac |  3 ++
 gdb/main.c       | 53 +++++++++++++++++++++++++++------
 4 files changed, 121 insertions(+), 15 deletions(-)
  

Comments

Sergio Durigan Junior Aug. 21, 2019, 5:32 p.m. UTC | #1
On Tuesday, August 20 2019, Christian Biesinger via gdb-patches wrote:

> gdb/ChangeLog:
>
> 2019-08-20  Christian Biesinger  <cbiesinger@google.com>
>
> 	* config.in: Add SYSTEM_GDBINIT_DIR.

config.in is also regenerated.

> 	* configure: Regenerate.
> 	* configure.ac: Add new option --with-system-gdbinit-dir.
> 	* main.c (get_init_files): Change system_gdbinit argument to
> 	a vector and return the files in SYSTEM_GDBINIT_DIR in
> 	addition to SYSTEM_GDBINIT.
> 	(captured_main_1): Update.
> 	(print_gdb_help): Update.

You'll need a descriptive commit log.

> ---
>  gdb/config.in    |  3 ++
>  gdb/configure    | 77 ++++++++++++++++++++++++++++++++++++++++++++----
>  gdb/configure.ac |  3 ++
>  gdb/main.c       | 53 +++++++++++++++++++++++++++------
>  4 files changed, 121 insertions(+), 15 deletions(-)
>
> diff --git a/gdb/config.in b/gdb/config.in
> index 26ca02f6a3..ca523fe4ab 100644
> --- a/gdb/config.in
> +++ b/gdb/config.in
> @@ -684,6 +684,9 @@
>  /* automatically load a system-wide gdbinit file */
>  #undef SYSTEM_GDBINIT
>  
> +/* automatically load system-wide gdbinit files from this dir */
> +#undef SYSTEM_GDBINIT_DIR
> +
>  /* Define if the system-gdbinit directory should be relocated when GDB is
>     moved. */
>  #undef SYSTEM_GDBINIT_RELOCATABLE
> diff --git a/gdb/configure b/gdb/configure
> index cb71bbf057..e5aa2e6b3b 100755
> --- a/gdb/configure
> +++ b/gdb/configure
> @@ -693,6 +693,7 @@ WIN32LIBS
>  SER_HARDWIRE
>  WERROR_CFLAGS
>  WARN_CFLAGS
> +SYSTEM_GDBINIT_DIR
>  SYSTEM_GDBINIT
>  TARGET_SYSTEM_ROOT
>  CONFIG_LDFLAGS
> @@ -824,6 +825,7 @@ infodir
>  docdir
>  oldincludedir
>  includedir
> +runstatedir
>  localstatedir
>  sharedstatedir
>  sysconfdir
> @@ -884,6 +886,7 @@ with_libipt_prefix
>  with_included_regex
>  with_sysroot
>  with_system_gdbinit
> +with_system_gdbinit_dir
>  enable_werror
>  enable_build_warnings
>  enable_gdb_build_warnings
> @@ -956,6 +959,7 @@ datadir='${datarootdir}'
>  sysconfdir='${prefix}/etc'
>  sharedstatedir='${prefix}/com'
>  localstatedir='${prefix}/var'
> +runstatedir='${localstatedir}/run'
>  includedir='${prefix}/include'
>  oldincludedir='/usr/include'
>  docdir='${datarootdir}/doc/${PACKAGE}'
> @@ -1208,6 +1212,15 @@ do
>    | -silent | --silent | --silen | --sile | --sil)
>      silent=yes ;;
>  
> +  -runstatedir | --runstatedir | --runstatedi | --runstated \
> +  | --runstate | --runstat | --runsta | --runst | --runs \
> +  | --run | --ru | --r)
> +    ac_prev=runstatedir ;;
> +  -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
> +  | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
> +  | --run=* | --ru=* | --r=*)
> +    runstatedir=$ac_optarg ;;
> +
>    -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
>      ac_prev=sbindir ;;
>    -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
> @@ -1345,7 +1358,7 @@ fi
>  for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
>  		datadir sysconfdir sharedstatedir localstatedir includedir \
>  		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
> -		libdir localedir mandir
> +		libdir localedir mandir runstatedir
>  do
>    eval ac_val=\$$ac_var
>    # Remove trailing slashes.
> @@ -1498,6 +1511,7 @@ Fine tuning of the installation directories:
>    --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
>    --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
>    --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
> +  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
>    --libdir=DIR            object code libraries [EPREFIX/lib]
>    --includedir=DIR        C header files [PREFIX/include]
>    --oldincludedir=DIR     C header files for non-gcc [/usr/include]
> @@ -1618,6 +1632,9 @@ Optional Packages:
>    --with-sysroot[=DIR]    search for usr/lib et al within DIR
>    --with-system-gdbinit=PATH
>                            automatically load a system-wide gdbinit file
> +  --with-system-gdbinit-dir=PATH
> +                          automatically load system-wide gdbinit files from
> +                          this directory
>    --with-lzma             support lzma compression (auto/yes/no)
>    --with-liblzma-prefix[=DIR]  search for liblzma in DIR/include and DIR/lib
>    --without-liblzma-prefix     don't search for liblzma in includedir and libdir
> @@ -4683,7 +4700,7 @@ else
>      We can't simply define LARGE_OFF_T to be 9223372036854775807,
>      since some C++ compilers masquerading as C compilers
>      incorrectly reject 9223372036854775807.  */
> -#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
> +#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
>    int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
>  		       && LARGE_OFF_T % 2147483647 == 1)
>  		      ? 1 : -1];
> @@ -4729,7 +4746,7 @@ else
>      We can't simply define LARGE_OFF_T to be 9223372036854775807,
>      since some C++ compilers masquerading as C compilers
>      incorrectly reject 9223372036854775807.  */
> -#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
> +#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
>    int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
>  		       && LARGE_OFF_T % 2147483647 == 1)
>  		      ? 1 : -1];
> @@ -4753,7 +4770,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
>      We can't simply define LARGE_OFF_T to be 9223372036854775807,
>      since some C++ compilers masquerading as C compilers
>      incorrectly reject 9223372036854775807.  */
> -#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
> +#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
>    int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
>  		       && LARGE_OFF_T % 2147483647 == 1)
>  		      ? 1 : -1];
> @@ -4798,7 +4815,7 @@ else
>      We can't simply define LARGE_OFF_T to be 9223372036854775807,
>      since some C++ compilers masquerading as C compilers
>      incorrectly reject 9223372036854775807.  */
> -#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
> +#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
>    int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
>  		       && LARGE_OFF_T % 2147483647 == 1)
>  		      ? 1 : -1];
> @@ -4822,7 +4839,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
>      We can't simply define LARGE_OFF_T to be 9223372036854775807,
>      since some C++ compilers masquerading as C compilers
>      incorrectly reject 9223372036854775807.  */
> -#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
> +#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
>    int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
>  		       && LARGE_OFF_T % 2147483647 == 1)
>  		      ? 1 : -1];
> @@ -12872,6 +12889,8 @@ main ()
>      if (*(data + i) != *(data3 + i))
>        return 14;
>    close (fd);
> +  free (data);
> +  free (data3);
>    return 0;
>  }
>  _ACEOF
> @@ -15239,6 +15258,52 @@ _ACEOF
>  
>  
>  
> +# Check whether --with-system-gdbinit-dir was given.
> +if test "${with_system_gdbinit_dir+set}" = set; then :
> +  withval=$with_system_gdbinit_dir;
> +    SYSTEM_GDBINIT_DIR=$withval
> +else
> +  SYSTEM_GDBINIT_DIR=
> +fi
> +
> +
> +  test "x$prefix" = xNONE && prefix="$ac_default_prefix"
> +  test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
> +  ac_define_dir=`eval echo $SYSTEM_GDBINIT_DIR`
> +  ac_define_dir=`eval echo $ac_define_dir`
> +
> +cat >>confdefs.h <<_ACEOF
> +#define SYSTEM_GDBINIT_DIR "$ac_define_dir"
> +_ACEOF
> +
> +
> +
> +
> +  if test "x$exec_prefix" = xNONE || test "x$exec_prefix" = 'x${prefix}'; then
> +     if test "x$prefix" = xNONE; then
> +     	test_prefix=/usr/local
> +     else
> +	test_prefix=$prefix
> +     fi
> +  else
> +     test_prefix=$exec_prefix
> +  fi
> +  value=0
> +  case ${ac_define_dir} in
> +     "${test_prefix}"|"${test_prefix}/"*|\
> +	'${exec_prefix}'|'${exec_prefix}/'*)
> +     value=1
> +     ;;
> +  esac
> +
> +cat >>confdefs.h <<_ACEOF
> +#define SYSTEM_GDBINIT_DIR_RELOCATABLE $value
> +_ACEOF
> +
> +
> +
> +
> +
>  # Check whether --enable-werror was given.
>  if test "${enable_werror+set}" = set; then :
>    enableval=$enable_werror; case "${enableval}" in
> diff --git a/gdb/configure.ac b/gdb/configure.ac
> index 5a18c16405..27d67ead3e 100644
> --- a/gdb/configure.ac
> +++ b/gdb/configure.ac
> @@ -1844,6 +1844,9 @@ GDB_AC_DEFINE_RELOCATABLE(TARGET_SYSTEM_ROOT, sysroot, ${ac_define_dir})
>  GDB_AC_WITH_DIR(SYSTEM_GDBINIT, system-gdbinit,
>      [automatically load a system-wide gdbinit file],
>      [])
> +GDB_AC_WITH_DIR(SYSTEM_GDBINIT_DIR, system-gdbinit-dir,
> +    [automatically load system-wide gdbinit files from this directory],
> +    [])
>  
>  AM_GDB_WARNINGS
>  AM_GDB_UBSAN
> diff --git a/gdb/main.c b/gdb/main.c
> index a1d1904c9b..39957db4bd 100644
> --- a/gdb/main.c
> +++ b/gdb/main.c
> @@ -45,6 +45,7 @@
>  #include "event-top.h"
>  #include "infrun.h"
>  #include "gdbsupport/signals-state-save-restore.h"
> +#include <algorithm>
>  #include <vector>
>  #include "gdbsupport/pathstuff.h"
>  #include "cli/cli-style.h"
> @@ -232,11 +233,11 @@ static std::string relocate_gdbinit_path_maybe_in_datadir (std::string file)
>     to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and
>     LOCAL_GDBINIT) is set to the empty string.  */
>  static void
> -get_init_files (std::string *system_gdbinit,
> +get_init_files (std::vector<std::string> *system_gdbinit,
>  		std::string *home_gdbinit,
>  		std::string *local_gdbinit)
>  {
> -  static std::string sysgdbinit;
> +  static std::vector<std::string> sysgdbinit;
>    static std::string homeinit;
>    static std::string localinit;
>    static int initialized = 0;
> @@ -251,7 +252,28 @@ get_init_files (std::string *system_gdbinit,
>  	    relocate_gdbinit_path_maybe_in_datadir (SYSTEM_GDBINIT);
>  	  if (!relocated_sysgdbinit.empty () &&
>  	      stat (relocated_sysgdbinit.c_str (), &s) == 0)
> -	    sysgdbinit = relocated_sysgdbinit;
> +	    sysgdbinit.push_back(relocated_sysgdbinit);
> +	}
> +      if (SYSTEM_GDBINIT_DIR[0])
> +        {

The indentation looks funny here.

> +	  std::string relocated_gdbinit_dir =
> +	    relocate_gdbinit_path_maybe_in_datadir (SYSTEM_GDBINIT_DIR);
> +	  DIR* dir;
> +	  if (!relocated_gdbinit_dir.empty () &&
> +	    (dir = opendir (relocated_gdbinit_dir.c_str ())) != nullptr)

I may be wrong, but I think we discourage variable assignment inside
conditions (but things are changing so fast with C++ that I don't know
anymore!).

> +	    {
> +	      std::vector<std::string> files;
> +	      struct dirent* ent;
> +	      while ((ent = readdir (dir)) != nullptr)

Likewise.

> +	        {
> +		  if (ent->d_name[0] != '.')

I think we should also check 'ent->d_type' and make sure it's DT_REG (in
which case, the 'ent->d_name' check above could be removed).  It's
questionable whether we should also deal DT_LINK, but I don't think so
(for now).

> +		    files.push_back (relocated_gdbinit_dir + SLASH_STRING +
> +				     ent->d_name);
> +		}
> +	      closedir (dir);
> +	      std::sort (files.begin (), files.end ());
> +	      sysgdbinit.insert (sysgdbinit.end (), files.begin (), files.end ());
> +	    }
>  	}
>  
>        const char *homedir = getenv ("HOME");
> @@ -909,7 +931,8 @@ captured_main_1 (struct captured_main_args *context)
>    /* Lookup gdbinit files.  Note that the gdbinit file name may be
>       overriden during file initialization, so get_init_files should be
>       called after gdb_init.  */
> -  std::string system_gdbinit, home_gdbinit, local_gdbinit;
> +  std::vector<std::string> system_gdbinit;
> +  std::string home_gdbinit, local_gdbinit;
>    get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
>  
>    /* Do these (and anything which might call wrap_here or *_filtered)
> @@ -987,7 +1010,10 @@ captured_main_1 (struct captured_main_args *context)
>       processed; it sets global parameters, which are independent of
>       what file you are debugging or what directory you are in.  */
>    if (!system_gdbinit.empty () && !inhibit_gdbinit)
> -    ret = catch_command_errors (source_script, system_gdbinit.c_str (), 0);
> +    {
> +      for (const std::string& file : system_gdbinit)
> +	ret = catch_command_errors (source_script, file.c_str (), 0);
> +    }
>  
>    /* Read and execute $HOME/.gdbinit file, if it exists.  This is done
>       *before* all the command line arguments are processed; it sets
> @@ -1205,7 +1231,7 @@ gdb_main (struct captured_main_args *args)
>  static void
>  print_gdb_help (struct ui_file *stream)
>  {
> -  std::string system_gdbinit;
> +  std::vector<std::string> system_gdbinit;
>    std::string home_gdbinit;
>    std::string local_gdbinit;
>  
> @@ -1286,9 +1312,18 @@ Other options:\n\n\
>  At startup, GDB reads the following init files and executes their commands:\n\
>  "), stream);
>    if (!system_gdbinit.empty ())
> -    fprintf_unfiltered (stream, _("\
> -   * system-wide init file: %s\n\
> -"), system_gdbinit.c_str ());
> +    {
> +      std::string output;
> +      for (size_t idx = 0; idx < system_gdbinit.size(); ++idx)

Space between variable name and parens.

> +        {
> +	  output += system_gdbinit[idx];
> +	  if (idx < system_gdbinit.size() - 1)
> +	    output += ", ";
> +	}
> +      fprintf_unfiltered (stream, _("\
> +   * system-wide init files: %s\n\
> +"), output.c_str ());
> +    }
>    if (!home_gdbinit.empty ())
>      fprintf_unfiltered (stream, _("\
>     * user-specific init file: %s\n\
> -- 
> 2.23.0.rc1.153.gdeed80330f-goog

This looks good, but it needs a testcase, documentation updates and a
NEWS entry.

Thanks,
  
Sergio Durigan Junior Aug. 21, 2019, 6:15 p.m. UTC | #2
On Tuesday, August 20 2019, Christian Biesinger via gdb-patches wrote:

> diff --git a/gdb/configure b/gdb/configure
> index cb71bbf057..e5aa2e6b3b 100755
> --- a/gdb/configure
> +++ b/gdb/configure
> @@ -693,6 +693,7 @@ WIN32LIBS
>  SER_HARDWIRE
>  WERROR_CFLAGS
>  WARN_CFLAGS
> +SYSTEM_GDBINIT_DIR
>  SYSTEM_GDBINIT
>  TARGET_SYSTEM_ROOT
>  CONFIG_LDFLAGS
> @@ -824,6 +825,7 @@ infodir
>  docdir
>  oldincludedir
>  includedir
> +runstatedir
>  localstatedir
>  sharedstatedir
>  sysconfdir
> @@ -884,6 +886,7 @@ with_libipt_prefix
>  with_included_regex
>  with_sysroot
>  with_system_gdbinit
> +with_system_gdbinit_dir
>  enable_werror
>  enable_build_warnings
>  enable_gdb_build_warnings
> @@ -956,6 +959,7 @@ datadir='${datarootdir}'
>  sysconfdir='${prefix}/etc'
>  sharedstatedir='${prefix}/com'
>  localstatedir='${prefix}/var'
> +runstatedir='${localstatedir}/run'
>  includedir='${prefix}/include'
>  oldincludedir='/usr/include'
>  docdir='${datarootdir}/doc/${PACKAGE}'
> @@ -1208,6 +1212,15 @@ do
>    | -silent | --silent | --silen | --sile | --sil)
>      silent=yes ;;
>  
> +  -runstatedir | --runstatedir | --runstatedi | --runstated \
> +  | --runstate | --runstat | --runsta | --runst | --runs \
> +  | --run | --ru | --r)
> +    ac_prev=runstatedir ;;
> +  -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
> +  | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
> +  | --run=* | --ru=* | --r=*)
> +    runstatedir=$ac_optarg ;;
> +

Something else I forgot to comment: this 'runstatedir' addition seems
unrelated to the patch; it's probably due to the autoconf version you're
using to regenerate these files.

Make sure you have the correct versions installed:

  https://sourceware.org/gdb/wiki/DeveloperTips#Editing_configure.ac

Thanks,
  
Terekhov, Mikhail via Gdb-patches Aug. 21, 2019, 6:45 p.m. UTC | #3
On Wed, Aug 21, 2019 at 1:15 PM Sergio Durigan Junior
<sergiodj@redhat.com> wrote:
>
> On Tuesday, August 20 2019, Christian Biesinger via gdb-patches wrote:
>
> > diff --git a/gdb/configure b/gdb/configure
> > index cb71bbf057..e5aa2e6b3b 100755
> > --- a/gdb/configure
> > +++ b/gdb/configure
> > @@ -693,6 +693,7 @@ WIN32LIBS
> >  SER_HARDWIRE
> >  WERROR_CFLAGS
> >  WARN_CFLAGS
> > +SYSTEM_GDBINIT_DIR
> >  SYSTEM_GDBINIT
> >  TARGET_SYSTEM_ROOT
> >  CONFIG_LDFLAGS
> > @@ -824,6 +825,7 @@ infodir
> >  docdir
> >  oldincludedir
> >  includedir
> > +runstatedir
> >  localstatedir
> >  sharedstatedir
> >  sysconfdir
> > @@ -884,6 +886,7 @@ with_libipt_prefix
> >  with_included_regex
> >  with_sysroot
> >  with_system_gdbinit
> > +with_system_gdbinit_dir
> >  enable_werror
> >  enable_build_warnings
> >  enable_gdb_build_warnings
> > @@ -956,6 +959,7 @@ datadir='${datarootdir}'
> >  sysconfdir='${prefix}/etc'
> >  sharedstatedir='${prefix}/com'
> >  localstatedir='${prefix}/var'
> > +runstatedir='${localstatedir}/run'
> >  includedir='${prefix}/include'
> >  oldincludedir='/usr/include'
> >  docdir='${datarootdir}/doc/${PACKAGE}'
> > @@ -1208,6 +1212,15 @@ do
> >    | -silent | --silent | --silen | --sile | --sil)
> >      silent=yes ;;
> >
> > +  -runstatedir | --runstatedir | --runstatedi | --runstated \
> > +  | --runstate | --runstat | --runsta | --runst | --runs \
> > +  | --run | --ru | --r)
> > +    ac_prev=runstatedir ;;
> > +  -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
> > +  | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
> > +  | --run=* | --ru=* | --r=*)
> > +    runstatedir=$ac_optarg ;;
> > +
>
> Something else I forgot to comment: this 'runstatedir' addition seems
> unrelated to the patch; it's probably due to the autoconf version you're
> using to regenerate these files.
>
> Make sure you have the correct versions installed:
>
>   https://sourceware.org/gdb/wiki/DeveloperTips#Editing_configure.ac

Turns out the debian version of autoconf has a local patch to do this
runstate thing :(
https://sources.debian.org/src/autoconf/2.69-11/debian/patches/add-runstatedir.patch/

Anyway, I'll hold off on updating this patch pending the discussion
about the approach in the other thread. (But patches 1 and 2 may still
be good to get committed)

Christian
  
Terekhov, Mikhail via Gdb-patches Aug. 26, 2019, 12:24 a.m. UTC | #4
On Wed, Aug 21, 2019 at 1:32 PM Sergio Durigan Junior
<sergiodj@redhat.com> wrote:
>
> On Tuesday, August 20 2019, Christian Biesinger via gdb-patches wrote:
>
> > gdb/ChangeLog:
> >
> > 2019-08-20  Christian Biesinger  <cbiesinger@google.com>
> >
> >       * config.in: Add SYSTEM_GDBINIT_DIR.
>
> config.in is also regenerated.

Done.

> >       * configure: Regenerate.
> >       * configure.ac: Add new option --with-system-gdbinit-dir.
> >       * main.c (get_init_files): Change system_gdbinit argument to
> >       a vector and return the files in SYSTEM_GDBINIT_DIR in
> >       addition to SYSTEM_GDBINIT.
> >       (captured_main_1): Update.
> >       (print_gdb_help): Update.
>
> You'll need a descriptive commit log.

Done.

> > ---
> >  gdb/config.in    |  3 ++
> >  gdb/configure    | 77 ++++++++++++++++++++++++++++++++++++++++++++----
> >  gdb/configure.ac |  3 ++
> >  gdb/main.c       | 53 +++++++++++++++++++++++++++------
> >  4 files changed, 121 insertions(+), 15 deletions(-)
> >
> > diff --git a/gdb/config.in b/gdb/config.in
> > index 26ca02f6a3..ca523fe4ab 100644
> > --- a/gdb/config.in
> > +++ b/gdb/config.in
> > @@ -684,6 +684,9 @@
> >  /* automatically load a system-wide gdbinit file */
> >  #undef SYSTEM_GDBINIT
> >
> > +/* automatically load system-wide gdbinit files from this dir */
> > +#undef SYSTEM_GDBINIT_DIR
> > +
> >  /* Define if the system-gdbinit directory should be relocated when GDB is
> >     moved. */
> >  #undef SYSTEM_GDBINIT_RELOCATABLE
> > diff --git a/gdb/configure b/gdb/configure
> > index cb71bbf057..e5aa2e6b3b 100755
> > --- a/gdb/configure
> > +++ b/gdb/configure
> > @@ -693,6 +693,7 @@ WIN32LIBS
> >  SER_HARDWIRE
> >  WERROR_CFLAGS
> >  WARN_CFLAGS
> > +SYSTEM_GDBINIT_DIR
> >  SYSTEM_GDBINIT
> >  TARGET_SYSTEM_ROOT
> >  CONFIG_LDFLAGS
> > @@ -824,6 +825,7 @@ infodir
> >  docdir
> >  oldincludedir
> >  includedir
> > +runstatedir
> >  localstatedir
> >  sharedstatedir
> >  sysconfdir
> > @@ -884,6 +886,7 @@ with_libipt_prefix
> >  with_included_regex
> >  with_sysroot
> >  with_system_gdbinit
> > +with_system_gdbinit_dir
> >  enable_werror
> >  enable_build_warnings
> >  enable_gdb_build_warnings
> > @@ -956,6 +959,7 @@ datadir='${datarootdir}'
> >  sysconfdir='${prefix}/etc'
> >  sharedstatedir='${prefix}/com'
> >  localstatedir='${prefix}/var'
> > +runstatedir='${localstatedir}/run'
> >  includedir='${prefix}/include'
> >  oldincludedir='/usr/include'
> >  docdir='${datarootdir}/doc/${PACKAGE}'
> > @@ -1208,6 +1212,15 @@ do
> >    | -silent | --silent | --silen | --sile | --sil)
> >      silent=yes ;;
> >
> > +  -runstatedir | --runstatedir | --runstatedi | --runstated \
> > +  | --runstate | --runstat | --runsta | --runst | --runs \
> > +  | --run | --ru | --r)
> > +    ac_prev=runstatedir ;;
> > +  -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
> > +  | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
> > +  | --run=* | --ru=* | --r=*)
> > +    runstatedir=$ac_optarg ;;
> > +
> >    -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
> >      ac_prev=sbindir ;;
> >    -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
> > @@ -1345,7 +1358,7 @@ fi
> >  for ac_var in        exec_prefix prefix bindir sbindir libexecdir datarootdir \
> >               datadir sysconfdir sharedstatedir localstatedir includedir \
> >               oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
> > -             libdir localedir mandir
> > +             libdir localedir mandir runstatedir
> >  do
> >    eval ac_val=\$$ac_var
> >    # Remove trailing slashes.
> > @@ -1498,6 +1511,7 @@ Fine tuning of the installation directories:
> >    --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
> >    --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
> >    --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
> > +  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
> >    --libdir=DIR            object code libraries [EPREFIX/lib]
> >    --includedir=DIR        C header files [PREFIX/include]
> >    --oldincludedir=DIR     C header files for non-gcc [/usr/include]
> > @@ -1618,6 +1632,9 @@ Optional Packages:
> >    --with-sysroot[=DIR]    search for usr/lib et al within DIR
> >    --with-system-gdbinit=PATH
> >                            automatically load a system-wide gdbinit file
> > +  --with-system-gdbinit-dir=PATH
> > +                          automatically load system-wide gdbinit files from
> > +                          this directory
> >    --with-lzma             support lzma compression (auto/yes/no)
> >    --with-liblzma-prefix[=DIR]  search for liblzma in DIR/include and DIR/lib
> >    --without-liblzma-prefix     don't search for liblzma in includedir and libdir
> > @@ -4683,7 +4700,7 @@ else
> >      We can't simply define LARGE_OFF_T to be 9223372036854775807,
> >      since some C++ compilers masquerading as C compilers
> >      incorrectly reject 9223372036854775807.  */
> > -#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
> > +#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
> >    int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
> >                      && LARGE_OFF_T % 2147483647 == 1)
> >                     ? 1 : -1];
> > @@ -4729,7 +4746,7 @@ else
> >      We can't simply define LARGE_OFF_T to be 9223372036854775807,
> >      since some C++ compilers masquerading as C compilers
> >      incorrectly reject 9223372036854775807.  */
> > -#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
> > +#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
> >    int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
> >                      && LARGE_OFF_T % 2147483647 == 1)
> >                     ? 1 : -1];
> > @@ -4753,7 +4770,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
> >      We can't simply define LARGE_OFF_T to be 9223372036854775807,
> >      since some C++ compilers masquerading as C compilers
> >      incorrectly reject 9223372036854775807.  */
> > -#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
> > +#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
> >    int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
> >                      && LARGE_OFF_T % 2147483647 == 1)
> >                     ? 1 : -1];
> > @@ -4798,7 +4815,7 @@ else
> >      We can't simply define LARGE_OFF_T to be 9223372036854775807,
> >      since some C++ compilers masquerading as C compilers
> >      incorrectly reject 9223372036854775807.  */
> > -#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
> > +#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
> >    int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
> >                      && LARGE_OFF_T % 2147483647 == 1)
> >                     ? 1 : -1];
> > @@ -4822,7 +4839,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
> >      We can't simply define LARGE_OFF_T to be 9223372036854775807,
> >      since some C++ compilers masquerading as C compilers
> >      incorrectly reject 9223372036854775807.  */
> > -#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
> > +#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
> >    int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
> >                      && LARGE_OFF_T % 2147483647 == 1)
> >                     ? 1 : -1];
> > @@ -12872,6 +12889,8 @@ main ()
> >      if (*(data + i) != *(data3 + i))
> >        return 14;
> >    close (fd);
> > +  free (data);
> > +  free (data3);
> >    return 0;
> >  }
> >  _ACEOF
> > @@ -15239,6 +15258,52 @@ _ACEOF
> >
> >
> >
> > +# Check whether --with-system-gdbinit-dir was given.
> > +if test "${with_system_gdbinit_dir+set}" = set; then :
> > +  withval=$with_system_gdbinit_dir;
> > +    SYSTEM_GDBINIT_DIR=$withval
> > +else
> > +  SYSTEM_GDBINIT_DIR=
> > +fi
> > +
> > +
> > +  test "x$prefix" = xNONE && prefix="$ac_default_prefix"
> > +  test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
> > +  ac_define_dir=`eval echo $SYSTEM_GDBINIT_DIR`
> > +  ac_define_dir=`eval echo $ac_define_dir`
> > +
> > +cat >>confdefs.h <<_ACEOF
> > +#define SYSTEM_GDBINIT_DIR "$ac_define_dir"
> > +_ACEOF
> > +
> > +
> > +
> > +
> > +  if test "x$exec_prefix" = xNONE || test "x$exec_prefix" = 'x${prefix}'; then
> > +     if test "x$prefix" = xNONE; then
> > +             test_prefix=/usr/local
> > +     else
> > +     test_prefix=$prefix
> > +     fi
> > +  else
> > +     test_prefix=$exec_prefix
> > +  fi
> > +  value=0
> > +  case ${ac_define_dir} in
> > +     "${test_prefix}"|"${test_prefix}/"*|\
> > +     '${exec_prefix}'|'${exec_prefix}/'*)
> > +     value=1
> > +     ;;
> > +  esac
> > +
> > +cat >>confdefs.h <<_ACEOF
> > +#define SYSTEM_GDBINIT_DIR_RELOCATABLE $value
> > +_ACEOF
> > +
> > +
> > +
> > +
> > +
> >  # Check whether --enable-werror was given.
> >  if test "${enable_werror+set}" = set; then :
> >    enableval=$enable_werror; case "${enableval}" in
> > diff --git a/gdb/configure.ac b/gdb/configure.ac
> > index 5a18c16405..27d67ead3e 100644
> > --- a/gdb/configure.ac
> > +++ b/gdb/configure.ac
> > @@ -1844,6 +1844,9 @@ GDB_AC_DEFINE_RELOCATABLE(TARGET_SYSTEM_ROOT, sysroot, ${ac_define_dir})
> >  GDB_AC_WITH_DIR(SYSTEM_GDBINIT, system-gdbinit,
> >      [automatically load a system-wide gdbinit file],
> >      [])
> > +GDB_AC_WITH_DIR(SYSTEM_GDBINIT_DIR, system-gdbinit-dir,
> > +    [automatically load system-wide gdbinit files from this directory],
> > +    [])
> >
> >  AM_GDB_WARNINGS
> >  AM_GDB_UBSAN
> > diff --git a/gdb/main.c b/gdb/main.c
> > index a1d1904c9b..39957db4bd 100644
> > --- a/gdb/main.c
> > +++ b/gdb/main.c
> > @@ -45,6 +45,7 @@
> >  #include "event-top.h"
> >  #include "infrun.h"
> >  #include "gdbsupport/signals-state-save-restore.h"
> > +#include <algorithm>
> >  #include <vector>
> >  #include "gdbsupport/pathstuff.h"
> >  #include "cli/cli-style.h"
> > @@ -232,11 +233,11 @@ static std::string relocate_gdbinit_path_maybe_in_datadir (std::string file)
> >     to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and
> >     LOCAL_GDBINIT) is set to the empty string.  */
> >  static void
> > -get_init_files (std::string *system_gdbinit,
> > +get_init_files (std::vector<std::string> *system_gdbinit,
> >               std::string *home_gdbinit,
> >               std::string *local_gdbinit)
> >  {
> > -  static std::string sysgdbinit;
> > +  static std::vector<std::string> sysgdbinit;
> >    static std::string homeinit;
> >    static std::string localinit;
> >    static int initialized = 0;
> > @@ -251,7 +252,28 @@ get_init_files (std::string *system_gdbinit,
> >           relocate_gdbinit_path_maybe_in_datadir (SYSTEM_GDBINIT);
> >         if (!relocated_sysgdbinit.empty () &&
> >             stat (relocated_sysgdbinit.c_str (), &s) == 0)
> > -         sysgdbinit = relocated_sysgdbinit;
> > +         sysgdbinit.push_back(relocated_sysgdbinit);
> > +     }
> > +      if (SYSTEM_GDBINIT_DIR[0])
> > +        {
>
> The indentation looks funny here.

Can you elaborate? I think it is correct, but perhaps the diff makes
it look weird because the + is messing with the tabs.

> > +       std::string relocated_gdbinit_dir =
> > +         relocate_gdbinit_path_maybe_in_datadir (SYSTEM_GDBINIT_DIR);
> > +       DIR* dir;
> > +       if (!relocated_gdbinit_dir.empty () &&
> > +         (dir = opendir (relocated_gdbinit_dir.c_str ())) != nullptr)
>
> I may be wrong, but I think we discourage variable assignment inside
> conditions (but things are changing so fast with C++ that I don't know
> anymore!).

Done.

> > +         {
> > +           std::vector<std::string> files;
> > +           struct dirent* ent;
> > +           while ((ent = readdir (dir)) != nullptr)
>
> Likewise.

Done.

> > +             {
> > +               if (ent->d_name[0] != '.')
>
> I think we should also check 'ent->d_type' and make sure it's DT_REG (in
> which case, the 'ent->d_name' check above could be removed).  It's
> questionable whether we should also deal DT_LINK, but I don't think so
> (for now).

Done.

> > +                 files.push_back (relocated_gdbinit_dir + SLASH_STRING +
> > +                                  ent->d_name);
> > +             }
> > +           closedir (dir);
> > +           std::sort (files.begin (), files.end ());
> > +           sysgdbinit.insert (sysgdbinit.end (), files.begin (), files.end ());
> > +         }
> >       }
> >
> >        const char *homedir = getenv ("HOME");
> > @@ -909,7 +931,8 @@ captured_main_1 (struct captured_main_args *context)
> >    /* Lookup gdbinit files.  Note that the gdbinit file name may be
> >       overriden during file initialization, so get_init_files should be
> >       called after gdb_init.  */
> > -  std::string system_gdbinit, home_gdbinit, local_gdbinit;
> > +  std::vector<std::string> system_gdbinit;
> > +  std::string home_gdbinit, local_gdbinit;
> >    get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
> >
> >    /* Do these (and anything which might call wrap_here or *_filtered)
> > @@ -987,7 +1010,10 @@ captured_main_1 (struct captured_main_args *context)
> >       processed; it sets global parameters, which are independent of
> >       what file you are debugging or what directory you are in.  */
> >    if (!system_gdbinit.empty () && !inhibit_gdbinit)
> > -    ret = catch_command_errors (source_script, system_gdbinit.c_str (), 0);
> > +    {
> > +      for (const std::string& file : system_gdbinit)
> > +     ret = catch_command_errors (source_script, file.c_str (), 0);
> > +    }
> >
> >    /* Read and execute $HOME/.gdbinit file, if it exists.  This is done
> >       *before* all the command line arguments are processed; it sets
> > @@ -1205,7 +1231,7 @@ gdb_main (struct captured_main_args *args)
> >  static void
> >  print_gdb_help (struct ui_file *stream)
> >  {
> > -  std::string system_gdbinit;
> > +  std::vector<std::string> system_gdbinit;
> >    std::string home_gdbinit;
> >    std::string local_gdbinit;
> >
> > @@ -1286,9 +1312,18 @@ Other options:\n\n\
> >  At startup, GDB reads the following init files and executes their commands:\n\
> >  "), stream);
> >    if (!system_gdbinit.empty ())
> > -    fprintf_unfiltered (stream, _("\
> > -   * system-wide init file: %s\n\
> > -"), system_gdbinit.c_str ());
> > +    {
> > +      std::string output;
> > +      for (size_t idx = 0; idx < system_gdbinit.size(); ++idx)
>
> Space between variable name and parens.

Done, here and a couple lines below.

> > +        {
> > +       output += system_gdbinit[idx];
> > +       if (idx < system_gdbinit.size() - 1)
> > +         output += ", ";
> > +     }
> > +      fprintf_unfiltered (stream, _("\
> > +   * system-wide init files: %s\n\
> > +"), output.c_str ());
> > +    }
> >    if (!home_gdbinit.empty ())
> >      fprintf_unfiltered (stream, _("\
> >     * user-specific init file: %s\n\
> > --
> > 2.23.0.rc1.153.gdeed80330f-goog
>
> This looks good, but it needs a testcase, documentation updates and a
> NEWS entry.

Added NEWS and documentation, but how should I write a testcase for
it? It depends on a configure option... (we don't seem to have a test
for --with-system-gdbinit either, unless I missed it)

Will send a new patch shortly, also with a fixed configure script.

Christian
  

Patch

diff --git a/gdb/config.in b/gdb/config.in
index 26ca02f6a3..ca523fe4ab 100644
--- a/gdb/config.in
+++ b/gdb/config.in
@@ -684,6 +684,9 @@ 
 /* automatically load a system-wide gdbinit file */
 #undef SYSTEM_GDBINIT
 
+/* automatically load system-wide gdbinit files from this dir */
+#undef SYSTEM_GDBINIT_DIR
+
 /* Define if the system-gdbinit directory should be relocated when GDB is
    moved. */
 #undef SYSTEM_GDBINIT_RELOCATABLE
diff --git a/gdb/configure b/gdb/configure
index cb71bbf057..e5aa2e6b3b 100755
--- a/gdb/configure
+++ b/gdb/configure
@@ -693,6 +693,7 @@  WIN32LIBS
 SER_HARDWIRE
 WERROR_CFLAGS
 WARN_CFLAGS
+SYSTEM_GDBINIT_DIR
 SYSTEM_GDBINIT
 TARGET_SYSTEM_ROOT
 CONFIG_LDFLAGS
@@ -824,6 +825,7 @@  infodir
 docdir
 oldincludedir
 includedir
+runstatedir
 localstatedir
 sharedstatedir
 sysconfdir
@@ -884,6 +886,7 @@  with_libipt_prefix
 with_included_regex
 with_sysroot
 with_system_gdbinit
+with_system_gdbinit_dir
 enable_werror
 enable_build_warnings
 enable_gdb_build_warnings
@@ -956,6 +959,7 @@  datadir='${datarootdir}'
 sysconfdir='${prefix}/etc'
 sharedstatedir='${prefix}/com'
 localstatedir='${prefix}/var'
+runstatedir='${localstatedir}/run'
 includedir='${prefix}/include'
 oldincludedir='/usr/include'
 docdir='${datarootdir}/doc/${PACKAGE}'
@@ -1208,6 +1212,15 @@  do
   | -silent | --silent | --silen | --sile | --sil)
     silent=yes ;;
 
+  -runstatedir | --runstatedir | --runstatedi | --runstated \
+  | --runstate | --runstat | --runsta | --runst | --runs \
+  | --run | --ru | --r)
+    ac_prev=runstatedir ;;
+  -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
+  | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
+  | --run=* | --ru=* | --r=*)
+    runstatedir=$ac_optarg ;;
+
   -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
     ac_prev=sbindir ;;
   -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
@@ -1345,7 +1358,7 @@  fi
 for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
 		datadir sysconfdir sharedstatedir localstatedir includedir \
 		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
-		libdir localedir mandir
+		libdir localedir mandir runstatedir
 do
   eval ac_val=\$$ac_var
   # Remove trailing slashes.
@@ -1498,6 +1511,7 @@  Fine tuning of the installation directories:
   --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
   --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
   --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
   --libdir=DIR            object code libraries [EPREFIX/lib]
   --includedir=DIR        C header files [PREFIX/include]
   --oldincludedir=DIR     C header files for non-gcc [/usr/include]
@@ -1618,6 +1632,9 @@  Optional Packages:
   --with-sysroot[=DIR]    search for usr/lib et al within DIR
   --with-system-gdbinit=PATH
                           automatically load a system-wide gdbinit file
+  --with-system-gdbinit-dir=PATH
+                          automatically load system-wide gdbinit files from
+                          this directory
   --with-lzma             support lzma compression (auto/yes/no)
   --with-liblzma-prefix[=DIR]  search for liblzma in DIR/include and DIR/lib
   --without-liblzma-prefix     don't search for liblzma in includedir and libdir
@@ -4683,7 +4700,7 @@  else
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -4729,7 +4746,7 @@  else
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -4753,7 +4770,7 @@  rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -4798,7 +4815,7 @@  else
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -4822,7 +4839,7 @@  rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -12872,6 +12889,8 @@  main ()
     if (*(data + i) != *(data3 + i))
       return 14;
   close (fd);
+  free (data);
+  free (data3);
   return 0;
 }
 _ACEOF
@@ -15239,6 +15258,52 @@  _ACEOF
 
 
 
+# Check whether --with-system-gdbinit-dir was given.
+if test "${with_system_gdbinit_dir+set}" = set; then :
+  withval=$with_system_gdbinit_dir;
+    SYSTEM_GDBINIT_DIR=$withval
+else
+  SYSTEM_GDBINIT_DIR=
+fi
+
+
+  test "x$prefix" = xNONE && prefix="$ac_default_prefix"
+  test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+  ac_define_dir=`eval echo $SYSTEM_GDBINIT_DIR`
+  ac_define_dir=`eval echo $ac_define_dir`
+
+cat >>confdefs.h <<_ACEOF
+#define SYSTEM_GDBINIT_DIR "$ac_define_dir"
+_ACEOF
+
+
+
+
+  if test "x$exec_prefix" = xNONE || test "x$exec_prefix" = 'x${prefix}'; then
+     if test "x$prefix" = xNONE; then
+     	test_prefix=/usr/local
+     else
+	test_prefix=$prefix
+     fi
+  else
+     test_prefix=$exec_prefix
+  fi
+  value=0
+  case ${ac_define_dir} in
+     "${test_prefix}"|"${test_prefix}/"*|\
+	'${exec_prefix}'|'${exec_prefix}/'*)
+     value=1
+     ;;
+  esac
+
+cat >>confdefs.h <<_ACEOF
+#define SYSTEM_GDBINIT_DIR_RELOCATABLE $value
+_ACEOF
+
+
+
+
+
 # Check whether --enable-werror was given.
 if test "${enable_werror+set}" = set; then :
   enableval=$enable_werror; case "${enableval}" in
diff --git a/gdb/configure.ac b/gdb/configure.ac
index 5a18c16405..27d67ead3e 100644
--- a/gdb/configure.ac
+++ b/gdb/configure.ac
@@ -1844,6 +1844,9 @@  GDB_AC_DEFINE_RELOCATABLE(TARGET_SYSTEM_ROOT, sysroot, ${ac_define_dir})
 GDB_AC_WITH_DIR(SYSTEM_GDBINIT, system-gdbinit,
     [automatically load a system-wide gdbinit file],
     [])
+GDB_AC_WITH_DIR(SYSTEM_GDBINIT_DIR, system-gdbinit-dir,
+    [automatically load system-wide gdbinit files from this directory],
+    [])
 
 AM_GDB_WARNINGS
 AM_GDB_UBSAN
diff --git a/gdb/main.c b/gdb/main.c
index a1d1904c9b..39957db4bd 100644
--- a/gdb/main.c
+++ b/gdb/main.c
@@ -45,6 +45,7 @@ 
 #include "event-top.h"
 #include "infrun.h"
 #include "gdbsupport/signals-state-save-restore.h"
+#include <algorithm>
 #include <vector>
 #include "gdbsupport/pathstuff.h"
 #include "cli/cli-style.h"
@@ -232,11 +233,11 @@  static std::string relocate_gdbinit_path_maybe_in_datadir (std::string file)
    to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and
    LOCAL_GDBINIT) is set to the empty string.  */
 static void
-get_init_files (std::string *system_gdbinit,
+get_init_files (std::vector<std::string> *system_gdbinit,
 		std::string *home_gdbinit,
 		std::string *local_gdbinit)
 {
-  static std::string sysgdbinit;
+  static std::vector<std::string> sysgdbinit;
   static std::string homeinit;
   static std::string localinit;
   static int initialized = 0;
@@ -251,7 +252,28 @@  get_init_files (std::string *system_gdbinit,
 	    relocate_gdbinit_path_maybe_in_datadir (SYSTEM_GDBINIT);
 	  if (!relocated_sysgdbinit.empty () &&
 	      stat (relocated_sysgdbinit.c_str (), &s) == 0)
-	    sysgdbinit = relocated_sysgdbinit;
+	    sysgdbinit.push_back(relocated_sysgdbinit);
+	}
+      if (SYSTEM_GDBINIT_DIR[0])
+        {
+	  std::string relocated_gdbinit_dir =
+	    relocate_gdbinit_path_maybe_in_datadir (SYSTEM_GDBINIT_DIR);
+	  DIR* dir;
+	  if (!relocated_gdbinit_dir.empty () &&
+	    (dir = opendir (relocated_gdbinit_dir.c_str ())) != nullptr)
+	    {
+	      std::vector<std::string> files;
+	      struct dirent* ent;
+	      while ((ent = readdir (dir)) != nullptr)
+	        {
+		  if (ent->d_name[0] != '.')
+		    files.push_back (relocated_gdbinit_dir + SLASH_STRING +
+				     ent->d_name);
+		}
+	      closedir (dir);
+	      std::sort (files.begin (), files.end ());
+	      sysgdbinit.insert (sysgdbinit.end (), files.begin (), files.end ());
+	    }
 	}
 
       const char *homedir = getenv ("HOME");
@@ -909,7 +931,8 @@  captured_main_1 (struct captured_main_args *context)
   /* Lookup gdbinit files.  Note that the gdbinit file name may be
      overriden during file initialization, so get_init_files should be
      called after gdb_init.  */
-  std::string system_gdbinit, home_gdbinit, local_gdbinit;
+  std::vector<std::string> system_gdbinit;
+  std::string home_gdbinit, local_gdbinit;
   get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
 
   /* Do these (and anything which might call wrap_here or *_filtered)
@@ -987,7 +1010,10 @@  captured_main_1 (struct captured_main_args *context)
      processed; it sets global parameters, which are independent of
      what file you are debugging or what directory you are in.  */
   if (!system_gdbinit.empty () && !inhibit_gdbinit)
-    ret = catch_command_errors (source_script, system_gdbinit.c_str (), 0);
+    {
+      for (const std::string& file : system_gdbinit)
+	ret = catch_command_errors (source_script, file.c_str (), 0);
+    }
 
   /* Read and execute $HOME/.gdbinit file, if it exists.  This is done
      *before* all the command line arguments are processed; it sets
@@ -1205,7 +1231,7 @@  gdb_main (struct captured_main_args *args)
 static void
 print_gdb_help (struct ui_file *stream)
 {
-  std::string system_gdbinit;
+  std::vector<std::string> system_gdbinit;
   std::string home_gdbinit;
   std::string local_gdbinit;
 
@@ -1286,9 +1312,18 @@  Other options:\n\n\
 At startup, GDB reads the following init files and executes their commands:\n\
 "), stream);
   if (!system_gdbinit.empty ())
-    fprintf_unfiltered (stream, _("\
-   * system-wide init file: %s\n\
-"), system_gdbinit.c_str ());
+    {
+      std::string output;
+      for (size_t idx = 0; idx < system_gdbinit.size(); ++idx)
+        {
+	  output += system_gdbinit[idx];
+	  if (idx < system_gdbinit.size() - 1)
+	    output += ", ";
+	}
+      fprintf_unfiltered (stream, _("\
+   * system-wide init files: %s\n\
+"), output.c_str ());
+    }
   if (!home_gdbinit.empty ())
     fprintf_unfiltered (stream, _("\
    * user-specific init file: %s\n\