gdb/gdb-6.6-buildid-locate-rpm.patch

From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
From: Kevin Buettner <kevinb@redhat.com>
Date: Wed, 22 Feb 2023 22:30:40 -0700
Subject: gdb-6.6-buildid-locate-rpm.patch

;;=push+jan

diff --git a/gdb/aclocal.m4 b/gdb/aclocal.m4
--- a/gdb/aclocal.m4
+++ b/gdb/aclocal.m4
@@ -11,7 +11,223 @@
 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
 # PARTICULAR PURPOSE.
 
+# pkg.m4 - Macros to locate and utilise pkg-config.            -*- Autoconf -*-
+# serial 1 (pkg-config-0.24)
+#
+# Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# PKG_PROG_PKG_CONFIG([MIN-VERSION])
+# ----------------------------------
+AC_DEFUN([PKG_PROG_PKG_CONFIG],
+[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
+m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$])
+m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$])
+AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
+AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
+AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
+
+if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
+	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
+fi
+if test -n "$PKG_CONFIG"; then
+	_pkg_min_version=m4_default([$1], [0.9.0])
+	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
+	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
+		AC_MSG_RESULT([yes])
+	else
+		AC_MSG_RESULT([no])
+		PKG_CONFIG=""
+	fi
+fi[]dnl
+])# PKG_PROG_PKG_CONFIG
+
+# PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+#
+# Check to see whether a particular set of modules exists.  Similar
+# to PKG_CHECK_MODULES(), but does not set variables or print errors.
+#
+# Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
+# only at the first occurence in configure.ac, so if the first place
+# it's called might be skipped (such as if it is within an "if", you
+# have to call PKG_CHECK_EXISTS manually
+# --------------------------------------------------------------
+AC_DEFUN([PKG_CHECK_EXISTS],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+if test -n "$PKG_CONFIG" && \
+    AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
+  m4_default([$2], [:])
+m4_ifvaln([$3], [else
+  $3])dnl
+fi])
+
+# _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
+# ---------------------------------------------
+m4_define([_PKG_CONFIG],
+[if test -n "$$1"; then
+    pkg_cv_[]$1="$$1"
+ elif test -n "$PKG_CONFIG"; then
+    PKG_CHECK_EXISTS([$3],
+                     [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`
+		      test "x$?" != "x0" && pkg_failed=yes ],
+		     [pkg_failed=yes])
+ else
+    pkg_failed=untried
+fi[]dnl
+])# _PKG_CONFIG
+
+# _PKG_SHORT_ERRORS_SUPPORTED
+# -----------------------------
+AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
+if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
+        _pkg_short_errors_supported=yes
+else
+        _pkg_short_errors_supported=no
+fi[]dnl
+])# _PKG_SHORT_ERRORS_SUPPORTED
+
+
+# PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
+# [ACTION-IF-NOT-FOUND])
+#
+#
+# Note that if there is a possibility the first call to
+# PKG_CHECK_MODULES might not happen, you should be sure to include an
+# explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
+#
+#
+# --------------------------------------------------------------
+AC_DEFUN([PKG_CHECK_MODULES],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
+AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
+
+pkg_failed=no
+AC_MSG_CHECKING([for $1])
+
+_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
+_PKG_CONFIG([$1][_LIBS], [libs], [$2])
+
+m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
+and $1[]_LIBS to avoid the need to call pkg-config.
+See the pkg-config man page for more details.])
+
+if test $pkg_failed = yes; then
+        AC_MSG_RESULT([no])
+        _PKG_SHORT_ERRORS_SUPPORTED
+        if test $_pkg_short_errors_supported = yes; then
+	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1`
+        else
+	        $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1`
+        fi
+	# Put the nasty error message in config.log where it belongs
+	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
+
+	m4_default([$4], [AC_MSG_ERROR(
+[Package requirements ($2) were not met:
+
+$$1_PKG_ERRORS
+
+Consider adjusting the PKG_CONFIG_PATH environment variable if you
+installed software in a non-standard prefix.
+
+_PKG_TEXT])[]dnl
+        ])
+elif test $pkg_failed = untried; then
+        AC_MSG_RESULT([no])
+	m4_default([$4], [AC_MSG_FAILURE(
+[The pkg-config script could not be found or is too old.  Make sure it
+is in your PATH or set the PKG_CONFIG environment variable to the full
+path to pkg-config.
+
+_PKG_TEXT
+
+To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl
+        ])
+else
+	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
+	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
+        AC_MSG_RESULT([yes])
+	$3
+fi[]dnl
+])# PKG_CHECK_MODULES
+
+
+# PKG_INSTALLDIR(DIRECTORY)
+# -------------------------
+# Substitutes the variable pkgconfigdir as the location where a module
+# should install pkg-config .pc files. By default the directory is
+# $libdir/pkgconfig, but the default can be changed by passing
+# DIRECTORY. The user can override through the --with-pkgconfigdir
+# parameter.
+AC_DEFUN([PKG_INSTALLDIR],
+[m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])])
+m4_pushdef([pkg_description],
+    [pkg-config installation directory @<:@]pkg_default[@:>@])
+AC_ARG_WITH([pkgconfigdir],
+    [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],,
+    [with_pkgconfigdir=]pkg_default)
+AC_SUBST([pkgconfigdir], [$with_pkgconfigdir])
+m4_popdef([pkg_default])
+m4_popdef([pkg_description])
+]) dnl PKG_INSTALLDIR
+
+
+# PKG_NOARCH_INSTALLDIR(DIRECTORY)
+# -------------------------
+# Substitutes the variable noarch_pkgconfigdir as the location where a
+# module should install arch-independent pkg-config .pc files. By
+# default the directory is $datadir/pkgconfig, but the default can be
+# changed by passing DIRECTORY. The user can override through the
+# --with-noarch-pkgconfigdir parameter.
+AC_DEFUN([PKG_NOARCH_INSTALLDIR],
+[m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])])
+m4_pushdef([pkg_description],
+    [pkg-config arch-independent installation directory @<:@]pkg_default[@:>@])
+AC_ARG_WITH([noarch-pkgconfigdir],
+    [AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],,
+    [with_noarch_pkgconfigdir=]pkg_default)
+AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir])
+m4_popdef([pkg_default])
+m4_popdef([pkg_description])
+]) dnl PKG_NOARCH_INSTALLDIR
+
+
+# PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
+# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+# -------------------------------------------
+# Retrieves the value of the pkg-config variable for the given module.
+AC_DEFUN([PKG_CHECK_VAR],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl
+
+_PKG_CONFIG([$1], [variable="][$3]["], [$2])
+AS_VAR_COPY([$1], [pkg_cv_][$1])
+
+AS_VAR_IF([$1], [""], [$5], [$4])dnl
+])# PKG_CHECK_VAR
+
 m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
+
 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
 
 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
diff --git a/gdb/build-id.c b/gdb/build-id.c
--- a/gdb/build-id.c
+++ b/gdb/build-id.c
@@ -771,10 +771,10 @@ missing_rpm_enlist_1 (const char *filename, int verify_vendor)
   static rpmts (*rpmtsCreate_p) (void);
   extern rpmts rpmtsFree(rpmts ts);
   static rpmts (*rpmtsFree_p) (rpmts ts);
-  extern rpmdbMatchIterator rpmtsInitIterator(const rpmts ts, rpmTag rpmtag,
+  extern rpmdbMatchIterator rpmtsInitIterator(const rpmts ts, rpmDbiTagVal rpmtag,
                                               const void * keyp, size_t keylen);
   static rpmdbMatchIterator (*rpmtsInitIterator_p) (const rpmts ts,
-						    rpmTag rpmtag,
+						    rpmDbiTagVal rpmtag,
 						    const void *keyp,
 						    size_t keylen);
 #else	/* !DLOPEN_LIBRPM */
@@ -829,7 +829,7 @@ missing_rpm_enlist_1 (const char *filename, int verify_vendor)
 	      && (rpmdbNextIterator_p = (Header (*) (rpmdbMatchIterator mi)) dlsym (h, "rpmdbNextIterator"))
 	      && (rpmtsCreate_p = (rpmts (*) (void)) dlsym (h, "rpmtsCreate"))
 	      && (rpmtsFree_p = (rpmts (*) (rpmts ts)) dlsym (h, "rpmtsFree"))
-	      && (rpmtsInitIterator_p = (rpmdbMatchIterator (*) (const rpmts ts, rpmTag rpmtag, const void *keyp, size_t keylen)) dlsym (h, "rpmtsInitIterator"))))
+	      && (rpmtsInitIterator_p = (rpmdbMatchIterator (*) (const rpmts ts, rpmDbiTagVal rpmtag, const void *keyp, size_t keylen)) dlsym (h, "rpmtsInitIterator"))))
 	  {
 	    warning (_("Opened library \"%s\" is incompatible (%s), "
 		      "missing debuginfos notifications will not be displayed"),
@@ -917,7 +917,7 @@ missing_rpm_enlist_1 (const char *filename, int verify_vendor)
 
 	  /* RPMDBI_PACKAGES requires keylen == sizeof (int).  */
 	  /* RPMDBI_LABEL is an interface for NVR-based dbiFindByLabel().  */
-	  mi_debuginfo = rpmtsInitIterator_p (ts, (rpmTag) RPMDBI_LABEL, debuginfo, 0);
+	  mi_debuginfo = rpmtsInitIterator_p (ts, (rpmDbiTagVal) RPMDBI_LABEL, debuginfo, 0);
 	  xfree (debuginfo);
 	  if (mi_debuginfo)
 	    {
diff --git a/gdb/config.in b/gdb/config.in
--- a/gdb/config.in
+++ b/gdb/config.in
@@ -39,6 +39,9 @@
 /* Handle .ctf type-info sections */
 #undef ENABLE_LIBCTF
 
+/* librpm version specific library name to dlopen. */
+#undef DLOPEN_LIBRPM
+
 /* Define to 1 if translation of program messages to the user's native
    language is requested. */
 #undef ENABLE_NLS
@@ -259,6 +262,9 @@
 /* Define if you have the mpfr library. */
 #undef HAVE_LIBMPFR
 
+/* Define if librpm library is being used. */
+#undef HAVE_LIBRPM
+
 /* Define to 1 if you have the <libunwind-ia64.h> header file. */
 #undef HAVE_LIBUNWIND_IA64_H
 
diff --git a/gdb/configure b/gdb/configure
--- a/gdb/configure
+++ b/gdb/configure
@@ -783,6 +783,11 @@ TARGET_OBS
 ENABLE_BFD_64_BIT_FALSE
 ENABLE_BFD_64_BIT_TRUE
 subdirs
+RPM_LIBS
+RPM_CFLAGS
+PKG_CONFIG_LIBDIR
+PKG_CONFIG_PATH
+PKG_CONFIG
 GDB_DATADIR
 DEBUGDIR
 MAKEINFO_EXTRA_FLAGS
@@ -912,6 +917,7 @@ with_gdb_datadir
 with_relocated_sources
 with_auto_load_dir
 with_auto_load_safe_path
+with_rpm
 enable_targets
 enable_64_bit_bfd
 enable_gdbmi
@@ -992,6 +998,8 @@ PKG_CONFIG_PATH
 PKG_CONFIG_LIBDIR
 DEBUGINFOD_CFLAGS
 DEBUGINFOD_LIBS
+RPM_CFLAGS
+RPM_LIBS
 YACC
 YFLAGS
 ZSTD_CFLAGS
@@ -1678,6 +1686,8 @@ Optional Packages:
                           do not restrict auto-loaded files locations
   --with-debuginfod       Enable debuginfo lookups with debuginfod
                           (auto/yes/no)
+  --with-rpm              query rpm database for missing debuginfos (yes/no,
+                          def. auto=librpm.so)
   --with-libunwind-ia64   use libunwind frame unwinding for ia64 targets
   --with-curses           use the curses library instead of the termcap
                           library
@@ -1761,6 +1771,8 @@ Some influential environment variables:
               C compiler flags for DEBUGINFOD, overriding pkg-config
   DEBUGINFOD_LIBS
               linker flags for DEBUGINFOD, overriding pkg-config
+  RPM_CFLAGS  C compiler flags for RPM, overriding pkg-config
+  RPM_LIBS    linker flags for RPM, overriding pkg-config
   YACC        The `Yet Another Compiler Compiler' implementation to use.
               Defaults to the first program found out of: `bison -y', `byacc',
               `yacc'.
@@ -17848,6 +17860,495 @@ _ACEOF
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_auto_load_safe_path" >&5
 $as_echo "$with_auto_load_safe_path" >&6; }
 
+# Integration with rpm library to support missing debuginfo suggestions.
+# --without-rpm: Disable any rpm support.
+# --with-rpm=libname.so: Try to dynamically open `libname.so' during runtime.
+#   Even with runtime missing `libname.so' GDB will still other run correctly.
+#   Missing `libname.so' during ./configure will abort the configuration.
+# --with-rpm=librpm.so: Like `--with-rpm=libname.so' but try to find specific
+#   minor version first such as `librpm-4.6.so' as minor version differences
+#   mean API+ABI incompatibility.  If the specific match versioned library name
+#   could not be found still open dynamically at least `librpm.so'.
+# --with-rpm: Like `--with-rpm=librpm.so' but if any of its detection fails try
+#   to find librpm for compilation-time linking by pkg-config.  GDB binary will
+#   be probably linked with the version specific library (as `librpm-4.6.so').
+#   Failure to find librpm by pkg-config will abort the configuration.
+# (default) --with-rpm=auto: Like `--with-rpm=librpm.so' but if even pkg-config
+#   cannot find librpm use to the rpmless compilation (like `--without-rpm').
+
+
+# Check whether --with-rpm was given.
+if test "${with_rpm+set}" = set; then :
+  withval=$with_rpm;
+else
+  with_rpm="auto"
+fi
+
+
+
+
+if test "x$with_rpm" != "xno"; then
+  if test "x$with_rpm" = "xyes"; then
+    LIBRPM="librpm.so"
+    RPM_REQUIRE=true
+    DLOPEN_REQUIRE=false
+  elif test "x$with_rpm" = "xauto"; then
+    LIBRPM="librpm.so"
+    RPM_REQUIRE=false
+    DLOPEN_REQUIRE=false
+  else
+    LIBRPM="$with_rpm"
+    RPM_REQUIRE=true
+    DLOPEN_REQUIRE=true
+  fi
+  LIBRPM_STRING='"'"$LIBRPM"'"'
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking specific librpm version" >&5
+$as_echo_n "checking specific librpm version... " >&6; }
+  HAVE_DLOPEN_LIBRPM=false
+  save_LIBS="$LIBS"
+  LIBS="$LIBS -ldl"
+  if test "$cross_compiling" = yes; then :
+  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "cannot run test program while cross compiling
+See \`config.log' for more details." "$LINENO" 5; }
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <rpm/rpmlib.h>
+#include <dlfcn.h>
+#include <errno.h>
+#include <string.h>
+
+int
+main ()
+{
+
+    void *h;
+    const char *const *rpmverp;
+    FILE *f;
+
+    f = fopen ("conftest.out", "w");
+    if (!f)
+      {
+	fprintf (stderr, "Cannot write \"%s\": %s\n", "conftest.out",
+		 strerror (errno));
+	return 1;
+      }
+    h = dlopen ($LIBRPM_STRING, RTLD_LAZY);
+    if (!h)
+      {
+	fprintf (stderr, "dlopen (\"%s\"): %s\n", $LIBRPM_STRING, dlerror ());
+	return 1;
+      }
+    rpmverp = dlsym (h, "RPMVERSION");
+    if (!rpmverp)
+      {
+	fprintf (stderr, "dlsym (\"RPMVERSION\"): %s\n", dlerror ());
+	return 1;
+      }
+    fprintf (stderr, "RPMVERSION is: \"");
+    fprintf (stderr, "%s\"\n", *rpmverp);
+
+    /* Try to find the specific librpm version only for "librpm.so" as we do
+       not know how to assemble the version string otherwise.  */
+
+    if (strcmp ("librpm.so", $LIBRPM_STRING) != 0)
+      {
+	fprintf (f, "%s\n", $LIBRPM_STRING);
+	return 0;
+      }
+    else
+      {
+	char *h2_name;
+	void *h2;
+	int major, minor;
+
+	if (sscanf (*rpmverp, "%d.%d", &major, &minor) != 2)
+	  {
+	    fprintf (stderr, "Unable to parse RPMVERSION.\n");
+	    fprintf (f, "%s\n", $LIBRPM_STRING);
+	    return 0;
+	  }
+	/* Avoid the square brackets by malloc.  */
+	h2_name = malloc (64);
+	sprintf (h2_name, "librpm-%d.%d.so", major, minor);
+	h2 = dlopen (h2_name, RTLD_LAZY);
+	if (!h2)
+	  {
+	    fprintf (stderr, "dlopen (\"%s\"): %s\n", h2_name, dlerror ());
+	    fprintf (f, "%s\n", $LIBRPM_STRING);
+	    return 0;
+	  }
+	if (h2 != h)
+	  {
+	    fprintf (stderr, "dlopen of \"%s\" and \"%s\" are different.\n",
+		     $LIBRPM_STRING, h2_name);
+	    fprintf (f, "%s\n", $LIBRPM_STRING);
+	    return 0;
+	  }
+	/* Found the valid .so name with a specific version.  */
+	fprintf (f, "%s\n", h2_name);
+	return 0;
+      }
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+
+    DLOPEN_LIBRPM="`cat conftest.out`"
+    if test "x$DLOPEN_LIBRPM" != "x"; then
+      HAVE_DLOPEN_LIBRPM=true
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DLOPEN_LIBRPM" >&5
+$as_echo "$DLOPEN_LIBRPM" >&6; }
+    fi
+
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+  rm -f conftest.out
+
+
+
+  if $HAVE_DLOPEN_LIBRPM; then
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking rpm library API compatibility" >&5
+$as_echo_n "checking rpm library API compatibility... " >&6; }
+    # The compilation requires -Werror to verify anything.
+    save_CFLAGS="$CFLAGS"
+    CFLAGS="$CFLAGS -Werror"
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Duplicate here the declarations to verify they match "elfread.c".  */
+#include <rpm/rpmlib.h>
+#include <rpm/rpmts.h>
+#include <rpm/rpmdb.h>
+#include <rpm/header.h>
+extern char * headerFormat(Header h, const char * fmt, errmsg_t * errmsg);
+extern int rpmReadConfigFiles(const char * file, const char * target);
+extern rpmdbMatchIterator rpmdbFreeIterator(rpmdbMatchIterator mi);
+extern Header rpmdbNextIterator(rpmdbMatchIterator mi);
+extern rpmts rpmtsCreate(void);
+extern rpmts rpmtsFree(rpmts ts);
+extern rpmdbMatchIterator rpmtsInitIterator(const rpmts ts, rpmDbiTagVal rpmtag,
+					    const void * keyp, size_t keylen);
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+      LIBRPM_COMPAT=true
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+
+else
+
+      LIBRPM_COMPAT=false
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+    CFLAGS="$save_CFLAGS"
+
+    if ! $LIBRPM_COMPAT; then
+      HAVE_DLOPEN_LIBRPM=false
+    fi
+  fi
+
+  if $HAVE_DLOPEN_LIBRPM; then
+    DLOPEN_LIBRPM_STRING='"'"$DLOPEN_LIBRPM"'"'
+
+cat >>confdefs.h <<_ACEOF
+#define DLOPEN_LIBRPM $DLOPEN_LIBRPM_STRING
+_ACEOF
+
+
+$as_echo "#define HAVE_LIBRPM 1" >>confdefs.h
+
+  else
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+    LIBS="$save_LIBS"
+    if $DLOPEN_REQUIRE; then
+      as_fn_error "Specific name $LIBRPM was requested but it could not be opened." "$LINENO" 5
+    fi
+
+
+
+
+
+
+
+if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
+	if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}pkg-config", so it can be a program name with args.
+set dummy ${ac_tool_prefix}pkg-config; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_path_PKG_CONFIG+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $PKG_CONFIG in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_path_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+PKG_CONFIG=$ac_cv_path_PKG_CONFIG
+if test -n "$PKG_CONFIG"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5
+$as_echo "$PKG_CONFIG" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_path_PKG_CONFIG"; then
+  ac_pt_PKG_CONFIG=$PKG_CONFIG
+  # Extract the first word of "pkg-config", so it can be a program name with args.
+set dummy pkg-config; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_path_ac_pt_PKG_CONFIG+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $ac_pt_PKG_CONFIG in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_ac_pt_PKG_CONFIG="$ac_pt_PKG_CONFIG" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_path_ac_pt_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+ac_pt_PKG_CONFIG=$ac_cv_path_ac_pt_PKG_CONFIG
+if test -n "$ac_pt_PKG_CONFIG"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_pt_PKG_CONFIG" >&5
+$as_echo "$ac_pt_PKG_CONFIG" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_pt_PKG_CONFIG" = x; then
+    PKG_CONFIG=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    PKG_CONFIG=$ac_pt_PKG_CONFIG
+  fi
+else
+  PKG_CONFIG="$ac_cv_path_PKG_CONFIG"
+fi
+
+fi
+if test -n "$PKG_CONFIG"; then
+	_pkg_min_version=0.9.0
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking pkg-config is at least version $_pkg_min_version" >&5
+$as_echo_n "checking pkg-config is at least version $_pkg_min_version... " >&6; }
+	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+	else
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+		PKG_CONFIG=""
+	fi
+fi
+
+pkg_failed=no
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for RPM" >&5
+$as_echo_n "checking for RPM... " >&6; }
+
+if test -n "$RPM_CFLAGS"; then
+    pkg_cv_RPM_CFLAGS="$RPM_CFLAGS"
+ elif test -n "$PKG_CONFIG"; then
+    if test -n "$PKG_CONFIG" && \
+    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"rpm\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "rpm") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+  pkg_cv_RPM_CFLAGS=`$PKG_CONFIG --cflags "rpm" 2>/dev/null`
+		      test "x$?" != "x0" && pkg_failed=yes
+else
+  pkg_failed=yes
+fi
+ else
+    pkg_failed=untried
+fi
+if test -n "$RPM_LIBS"; then
+    pkg_cv_RPM_LIBS="$RPM_LIBS"
+ elif test -n "$PKG_CONFIG"; then
+    if test -n "$PKG_CONFIG" && \
+    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"rpm\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "rpm") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+  pkg_cv_RPM_LIBS=`$PKG_CONFIG --libs "rpm" 2>/dev/null`
+		      test "x$?" != "x0" && pkg_failed=yes
+else
+  pkg_failed=yes
+fi
+ else
+    pkg_failed=untried
+fi
+
+
+
+if test $pkg_failed = yes; then
+        { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+
+if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
+        _pkg_short_errors_supported=yes
+else
+        _pkg_short_errors_supported=no
+fi
+        if test $_pkg_short_errors_supported = yes; then
+	        RPM_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "rpm" 2>&1`
+        else
+	        RPM_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "rpm" 2>&1`
+        fi
+	# Put the nasty error message in config.log where it belongs
+	echo "$RPM_PKG_ERRORS" >&5
+
+	HAVE_LIBRPM=false
+elif test $pkg_failed = untried; then
+        { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+	HAVE_LIBRPM=false
+else
+	RPM_CFLAGS=$pkg_cv_RPM_CFLAGS
+	RPM_LIBS=$pkg_cv_RPM_LIBS
+        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+	HAVE_LIBRPM=true
+fi
+
+    if $HAVE_LIBRPM; then
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking rpm library API compatibility" >&5
+$as_echo_n "checking rpm library API compatibility... " >&6; }
+    # The compilation requires -Werror to verify anything.
+    save_CFLAGS="$CFLAGS"
+    CFLAGS="$CFLAGS -Werror"
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Duplicate here the declarations to verify they match "elfread.c".  */
+#include <rpm/rpmlib.h>
+#include <rpm/rpmts.h>
+#include <rpm/rpmdb.h>
+#include <rpm/header.h>
+extern char * headerFormat(Header h, const char * fmt, errmsg_t * errmsg);
+extern int rpmReadConfigFiles(const char * file, const char * target);
+extern rpmdbMatchIterator rpmdbFreeIterator(rpmdbMatchIterator mi);
+extern Header rpmdbNextIterator(rpmdbMatchIterator mi);
+extern rpmts rpmtsCreate(void);
+extern rpmts rpmtsFree(rpmts ts);
+extern rpmdbMatchIterator rpmtsInitIterator(const rpmts ts, rpmDbiTagVal rpmtag,
+					    const void * keyp, size_t keylen);
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+      LIBRPM_COMPAT=true
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+
+else
+
+      LIBRPM_COMPAT=false
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+    CFLAGS="$save_CFLAGS"
+
+      if ! $LIBRPM_COMPAT; then
+	HAVE_LIBRPM=false
+	RPM_PKG_ERRORS="Found $LIBRPM API is incompatibile with this GDB"
+      fi
+    fi
+
+    if $HAVE_LIBRPM; then
+
+$as_echo "#define HAVE_LIBRPM 1" >>confdefs.h
+
+      CFLAGS="$CFLAGS $RPM_CFLAGS"
+      LIBS="$LIBS $RPM_LIBS"
+    else
+      if $RPM_REQUIRE; then
+	as_fn_error "$RPM_PKG_ERRORS" "$LINENO" 5
+      else
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $RPM_PKG_ERRORS" >&5
+$as_echo "$as_me: WARNING: $RPM_PKG_ERRORS" >&2;}
+      fi
+    fi
+  fi
+fi
+
 
 
 subdirs="$subdirs testsuite"
diff --git a/gdb/configure.ac b/gdb/configure.ac
--- a/gdb/configure.ac
+++ b/gdb/configure.ac
@@ -160,6 +160,200 @@ AC_DEFINE_DIR(AUTO_LOAD_SAFE_PATH, escape_dir,
 	      [Directories safe to hold auto-loaded files.])
 AC_MSG_RESULT([$with_auto_load_safe_path])
 
+# Integration with rpm library to support missing debuginfo suggestions.
+# --without-rpm: Disable any rpm support.
+# --with-rpm=libname.so: Try to dynamically open `libname.so' during runtime.
+#   Even with runtime missing `libname.so' GDB will still other run correctly.
+#   Missing `libname.so' during ./configure will abort the configuration.
+# --with-rpm=librpm.so: Like `--with-rpm=libname.so' but try to find specific
+#   minor version first such as `librpm-4.6.so' as minor version differences
+#   mean API+ABI incompatibility.  If the specific match versioned library name
+#   could not be found still open dynamically at least `librpm.so'.
+# --with-rpm: Like `--with-rpm=librpm.so' but if any of its detection fails try
+#   to find librpm for compilation-time linking by pkg-config.  GDB binary will
+#   be probably linked with the version specific library (as `librpm-4.6.so').
+#   Failure to find librpm by pkg-config will abort the configuration.
+# (default) --with-rpm=auto: Like `--with-rpm=librpm.so' but if even pkg-config
+#   cannot find librpm use to the rpmless compilation (like `--without-rpm').
+
+AC_ARG_WITH([rpm],
+  [AS_HELP_STRING([--with-rpm],
+                  [query rpm database for missing debuginfos (yes/no, def. auto=librpm.so)])], [], [with_rpm="auto"])
+
+m4_pattern_allow([^AC_MSG_ERROR$])
+m4_pattern_allow([^AC_MSG_WARN$])
+if test "x$with_rpm" != "xno"; then
+  if test "x$with_rpm" = "xyes"; then
+    LIBRPM="librpm.so"
+    RPM_REQUIRE=true
+    DLOPEN_REQUIRE=false
+  elif test "x$with_rpm" = "xauto"; then
+    LIBRPM="librpm.so"
+    RPM_REQUIRE=false
+    DLOPEN_REQUIRE=false
+  else
+    LIBRPM="$with_rpm"
+    RPM_REQUIRE=true
+    DLOPEN_REQUIRE=true
+  fi
+  LIBRPM_STRING='"'"$LIBRPM"'"'
+
+  AC_MSG_CHECKING([specific librpm version])
+  HAVE_DLOPEN_LIBRPM=false
+  save_LIBS="$LIBS"
+  LIBS="$LIBS -ldl"
+  AC_RUN_IFELSE(AC_LANG_PROGRAM([[
+#include <rpm/rpmlib.h>
+#include <dlfcn.h>
+#include <errno.h>
+#include <string.h>
+  ]], [[
+    void *h;
+    const char *const *rpmverp;
+    FILE *f;
+
+    f = fopen ("conftest.out", "w");
+    if (!f)
+      {
+	fprintf (stderr, "Cannot write \"%s\": %s\n", "conftest.out",
+		 strerror (errno));
+	return 1;
+      }
+    h = dlopen ($LIBRPM_STRING, RTLD_LAZY);
+    if (!h)
+      {
+	fprintf (stderr, "dlopen (\"%s\"): %s\n", $LIBRPM_STRING, dlerror ());
+	return 1;
+      }
+    rpmverp = dlsym (h, "RPMVERSION");
+    if (!rpmverp)
+      {
+	fprintf (stderr, "dlsym (\"RPMVERSION\"): %s\n", dlerror ());
+	return 1;
+      }
+    fprintf (stderr, "RPMVERSION is: \"");
+    fprintf (stderr, "%s\"\n", *rpmverp);
+
+    /* Try to find the specific librpm version only for "librpm.so" as we do
+       not know how to assemble the version string otherwise.  */
+
+    if (strcmp ("librpm.so", $LIBRPM_STRING) != 0)
+      {
+	fprintf (f, "%s\n", $LIBRPM_STRING);
+	return 0;
+      }
+    else
+      {
+	char *h2_name;
+	void *h2;
+	int major, minor;
+
+	if (sscanf (*rpmverp, "%d.%d", &major, &minor) != 2)
+	  {
+	    fprintf (stderr, "Unable to parse RPMVERSION.\n");
+	    fprintf (f, "%s\n", $LIBRPM_STRING);
+	    return 0;
+	  }
+	/* Avoid the square brackets by malloc.  */
+	h2_name = malloc (64);
+	sprintf (h2_name, "librpm-%d.%d.so", major, minor);
+	h2 = dlopen (h2_name, RTLD_LAZY);
+	if (!h2)
+	  {
+	    fprintf (stderr, "dlopen (\"%s\"): %s\n", h2_name, dlerror ());
+	    fprintf (f, "%s\n", $LIBRPM_STRING);
+	    return 0;
+	  }
+	if (h2 != h)
+	  {
+	    fprintf (stderr, "dlopen of \"%s\" and \"%s\" are different.\n",
+		     $LIBRPM_STRING, h2_name);
+	    fprintf (f, "%s\n", $LIBRPM_STRING);
+	    return 0;
+	  }
+	/* Found the valid .so name with a specific version.  */
+	fprintf (f, "%s\n", h2_name);
+	return 0;
+      }
+  ]]), [
+    DLOPEN_LIBRPM="`cat conftest.out`"
+    if test "x$DLOPEN_LIBRPM" != "x"; then
+      HAVE_DLOPEN_LIBRPM=true
+      AC_MSG_RESULT($DLOPEN_LIBRPM)
+    fi
+  ])
+  rm -f conftest.out
+
+  m4_define([CHECK_LIBRPM_COMPAT], [
+    AC_MSG_CHECKING([rpm library API compatibility])
+    # The compilation requires -Werror to verify anything.
+    save_CFLAGS="$CFLAGS"
+    CFLAGS="$CFLAGS -Werror"
+    AC_COMPILE_IFELSE(AC_LANG_PROGRAM([[
+/* Duplicate here the declarations to verify they match "elfread.c".  */
+#include <rpm/rpmlib.h>
+#include <rpm/rpmts.h>
+#include <rpm/rpmdb.h>
+#include <rpm/header.h>
+extern char * headerFormat(Header h, const char * fmt, errmsg_t * errmsg);
+extern int rpmReadConfigFiles(const char * file, const char * target);
+extern rpmdbMatchIterator rpmdbFreeIterator(rpmdbMatchIterator mi);
+extern Header rpmdbNextIterator(rpmdbMatchIterator mi);
+extern rpmts rpmtsCreate(void);
+extern rpmts rpmtsFree(rpmts ts);
+extern rpmdbMatchIterator rpmtsInitIterator(const rpmts ts, rpmDbiTagVal rpmtag,
+					    const void * keyp, size_t keylen);
+    ]]), [
+      LIBRPM_COMPAT=true
+      AC_MSG_RESULT(yes)
+    ], [
+      LIBRPM_COMPAT=false
+      AC_MSG_RESULT(no)
+    ])
+    CFLAGS="$save_CFLAGS"
+  ])
+
+  if $HAVE_DLOPEN_LIBRPM; then
+    CHECK_LIBRPM_COMPAT
+    if ! $LIBRPM_COMPAT; then
+      HAVE_DLOPEN_LIBRPM=false
+    fi
+  fi
+
+  if $HAVE_DLOPEN_LIBRPM; then
+    DLOPEN_LIBRPM_STRING='"'"$DLOPEN_LIBRPM"'"'
+    AC_DEFINE_UNQUOTED(DLOPEN_LIBRPM, $DLOPEN_LIBRPM_STRING, [librpm version specific library name to dlopen.])
+    AC_DEFINE(HAVE_LIBRPM, 1, [Define if librpm library is being used.])
+  else
+    AC_MSG_RESULT(no)
+    LIBS="$save_LIBS"
+    if $DLOPEN_REQUIRE; then
+      AC_MSG_ERROR([Specific name $LIBRPM was requested but it could not be opened.])
+    fi
+    PKG_CHECK_MODULES(RPM, rpm, [HAVE_LIBRPM=true], [HAVE_LIBRPM=false])
+
+    if $HAVE_LIBRPM; then
+      CHECK_LIBRPM_COMPAT
+      if ! $LIBRPM_COMPAT; then
+	HAVE_LIBRPM=false
+	RPM_PKG_ERRORS="Found $LIBRPM API is incompatibile with this GDB"
+      fi
+    fi
+
+    if $HAVE_LIBRPM; then
+      AC_DEFINE(HAVE_LIBRPM, 1, [Define if librpm library is being used.])
+      CFLAGS="$CFLAGS $RPM_CFLAGS"
+      LIBS="$LIBS $RPM_LIBS"
+    else
+      if $RPM_REQUIRE; then
+	AC_MSG_ERROR($RPM_PKG_ERRORS)
+      else
+	AC_MSG_WARN($RPM_PKG_ERRORS)
+      fi
+    fi
+  fi
+fi
+
 AC_CONFIG_SUBDIRS(testsuite)
 
 # Check whether to support alternative target configurations
diff --git a/gdb/event-top.c b/gdb/event-top.c
--- a/gdb/event-top.c
+++ b/gdb/event-top.c
@@ -43,6 +43,7 @@
 #include "async-event.h"
 #include "bt-utils.h"
 #include "pager.h"
+#include "symfile.h"
 
 /* readline include files.  */
 #include "readline/readline.h"
@@ -391,6 +392,8 @@ display_gdb_prompt (const char *new_prompt)
   /* Reset the nesting depth used when trace-commands is set.  */
   reset_command_nest_depth ();
 
+  debug_flush_missing ();
+
   /* Do not call the python hook on an explicit prompt change as
      passed to this function, as this forms a secondary/local prompt,
      IE, displayed but not set.  */
@@ -852,7 +855,10 @@ command_line_handler (gdb::unique_xmalloc_ptr<char> &&rl)
       command_handler (cmd);
 
       if (ui->prompt_state != PROMPTED)
-	display_gdb_prompt (0);
+	{
+	  debug_flush_missing ();
+	  display_gdb_prompt (0);
+	}
     }
 }
 
diff --git a/gdb/symfile.h b/gdb/symfile.h
--- a/gdb/symfile.h
+++ b/gdb/symfile.h
@@ -352,6 +352,7 @@ extern void generic_load (const char *args, int from_tty);
 /* build-id support.  */
 extern struct bfd_build_id *build_id_addr_get (CORE_ADDR addr);
 extern void debug_print_missing (const char *binary, const char *debug);
+extern void debug_flush_missing (void);
 #define BUILD_ID_MAIN_EXECUTABLE_FILENAME _("the main executable file")
 
 /* From minidebug.c.  */