remove link.h checks

The removal of solib-sunos.c also removed the last user of various
macros defined by configure.

This patch removes the corresponding configure code.

2013-11-08  Tom Tromey  <tromey@redhat.com>

	* configure, config.in: Rebuild.
	* configure.ac: Remove all link.h-related checks.

4 files changed, 5 insertions, 266 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index d15bad7..323da72 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,10 @@
 2013-11-08  Tom Tromey  <tromey@redhat.com>
 
+	* configure, config.in: Rebuild.
+	* configure.ac: Remove all link.h-related checks.
+
+2013-11-08  Tom Tromey  <tromey@redhat.com>
+
 	* acinclude.m4: Include common.m4.
 	* common/common.m4: New file.
 	* configure, config.in: Rebuild.
diff --git a/gdb/config.in b/gdb/config.in
index 03b0972..7905468 100644
--- a/gdb/config.in
+++ b/gdb/config.in
@@ -225,9 +225,6 @@
 /* Define to 1 if you have the `w' library (-lw). */
 #undef HAVE_LIBW
 
-/* Define to 1 if you have the <link.h> header file. */
-#undef HAVE_LINK_H
-
 /* Define to 1 if you have the <linux/perf_event.h> header file. */
 #undef HAVE_LINUX_PERF_EVENT_H
 
@@ -423,17 +420,6 @@
 /* Define to 1 if you have the <string.h> header file. */
 #undef HAVE_STRING_H
 
-/* Define if <sys/link.h> has struct link_map32 */
-#undef HAVE_STRUCT_LINK_MAP32
-
-/* Define if <link.h> exists and defines struct link_map which has members
-   with an ``lm_'' prefix. (For SunOS.) */
-#undef HAVE_STRUCT_LINK_MAP_WITH_LM_MEMBERS
-
-/* Define if <link.h> exists and defines struct link_map which has members
-   with an ``l_'' prefix. (For Solaris, SVR4, and SVR4-like systems.) */
-#undef HAVE_STRUCT_LINK_MAP_WITH_L_MEMBERS
-
 /* Define to 1 if your system has struct lwp. */
 #undef HAVE_STRUCT_LWP
 
@@ -446,10 +432,6 @@
 /* Define to 1 if `struct reg' is a member of `r_gs'. */
 #undef HAVE_STRUCT_REG_R_GS
 
-/* Define if <link.h> exists and defines a struct so_map which has members
-   with an ``som_'' prefix. (Found on older *BSD systems.) */
-#undef HAVE_STRUCT_SO_MAP_WITH_SOM_MEMBERS
-
 /* Define to 1 if `struct stat' is a member of `st_blksize'. */
 #undef HAVE_STRUCT_STAT_ST_BLKSIZE
 
@@ -804,9 +786,6 @@
 /* Define to 1 if you need to in order for `stat' and other things to work. */
 #undef _POSIX_SOURCE
 
-/* Define if <sys/link.h> has link_map32 (solaris sparc-64 target) */
-#undef _SYSCALL32
-
 /* Define to empty if `const' does not conform to ANSI C. */
 #undef const
 
diff --git a/gdb/configure b/gdb/configure
index 9d58b11..8844c90 100755
--- a/gdb/configure
+++ b/gdb/configure
@@ -8936,25 +8936,6 @@ fi
 
 done
 
-for ac_header in link.h
-do :
-  ac_fn_c_check_header_compile "$LINENO" "link.h" "ac_cv_header_link_h" "#if HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-#if HAVE_NLIST_H
-# include <nlist.h>
-#endif
-
-"
-if test "x$ac_cv_header_link_h" = x""yes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LINK_H 1
-_ACEOF
-
-fi
-
-done
-
 for ac_header in sys/proc.h
 do :
   ac_fn_c_check_header_compile "$LINENO" "sys/proc.h" "ac_cv_header_sys_proc_h" "#if HAVE_SYS_PARAM_H
@@ -12016,149 +11997,6 @@ $as_echo "#define HAVE_PROCFS_PIOCSET 1" >>confdefs.h
   fi
 fi
 
-if test ${host} = ${target} ; then
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for member l_addr in struct link_map" >&5
-$as_echo_n "checking for member l_addr in struct link_map... " >&6; }
-  if test "${gdb_cv_have_struct_link_map_with_l_members+set}" = set; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <link.h>
-int
-main ()
-{
-struct link_map lm; (void) lm.l_addr;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  gdb_cv_have_struct_link_map_with_l_members=yes
-else
-  gdb_cv_have_struct_link_map_with_l_members=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gdb_cv_have_struct_link_map_with_l_members" >&5
-$as_echo "$gdb_cv_have_struct_link_map_with_l_members" >&6; }
-  if test $gdb_cv_have_struct_link_map_with_l_members = yes; then
-
-$as_echo "#define HAVE_STRUCT_LINK_MAP_WITH_L_MEMBERS 1" >>confdefs.h
-
-  fi
-
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for member lm_addr in struct link_map" >&5
-$as_echo_n "checking for member lm_addr in struct link_map... " >&6; }
-  if test "${gdb_cv_have_struct_link_map_with_lm_members+set}" = set; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <sys/types.h>
-#include <link.h>
-int
-main ()
-{
-struct link_map lm; (void) lm.lm_addr;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  gdb_cv_have_struct_link_map_with_lm_members=yes
-else
-  gdb_cv_have_struct_link_map_with_lm_members=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gdb_cv_have_struct_link_map_with_lm_members" >&5
-$as_echo "$gdb_cv_have_struct_link_map_with_lm_members" >&6; }
-  if test $gdb_cv_have_struct_link_map_with_lm_members = yes; then
-
-$as_echo "#define HAVE_STRUCT_LINK_MAP_WITH_LM_MEMBERS 1" >>confdefs.h
-
-  fi
-
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for member som_addr in struct so_map" >&5
-$as_echo_n "checking for member som_addr in struct so_map... " >&6; }
-  if test "${gdb_cv_have_struct_so_map_with_som_members+set}" = set; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <sys/types.h>
-#ifdef HAVE_NLIST_H
-#include <nlist.h>
-#endif
-#include <link.h>
-int
-main ()
-{
-struct so_map lm; (void) lm.som_addr;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  gdb_cv_have_struct_so_map_with_som_members=yes
-else
-  gdb_cv_have_struct_so_map_with_som_members=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gdb_cv_have_struct_so_map_with_som_members" >&5
-$as_echo "$gdb_cv_have_struct_so_map_with_som_members" >&6; }
-  if test $gdb_cv_have_struct_so_map_with_som_members = yes; then
-
-$as_echo "#define HAVE_STRUCT_SO_MAP_WITH_SOM_MEMBERS 1" >>confdefs.h
-
-  fi
-
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for struct link_map32 in sys/link.h" >&5
-$as_echo_n "checking for struct link_map32 in sys/link.h... " >&6; }
-  if test "${gdb_cv_have_struct_link_map32+set}" = set; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#define _SYSCALL32
-#include <sys/link.h>
-int
-main ()
-{
-struct link_map32 l;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  gdb_cv_have_struct_link_map32=yes
-else
-  gdb_cv_have_struct_link_map32=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gdb_cv_have_struct_link_map32" >&5
-$as_echo "$gdb_cv_have_struct_link_map32" >&6; }
-  if test $gdb_cv_have_struct_link_map32 = yes; then
-
-$as_echo "#define HAVE_STRUCT_LINK_MAP32 1" >>confdefs.h
-
-
-$as_echo "#define _SYSCALL32 1" >>confdefs.h
-
-  fi
-fi
-
 # Check if the compiler supports the `long long' type.
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for long long support in compiler" >&5
diff --git a/gdb/configure.ac b/gdb/configure.ac
index 3558d6a..8f9e1e2 100644
--- a/gdb/configure.ac
+++ b/gdb/configure.ac
@@ -1084,14 +1084,6 @@ AC_CHECK_HEADERS([nlist.h machine/reg.h poll.h sys/poll.h sys/socket.h proc_serv
 		  sys/types.h sys/wait.h wait.h termios.h termio.h \
 		  sgtty.h unistd.h elf_hp.h locale.h \
 		  dlfcn.h sys/un.h linux/perf_event.h])
-AC_CHECK_HEADERS(link.h, [], [],
-[#if HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-#if HAVE_NLIST_H
-# include <nlist.h>
-#endif
-])
 AC_CHECK_HEADERS(sys/proc.h, [], [],
 [#if HAVE_SYS_PARAM_H
 # include <sys/param.h>
@@ -1478,81 +1470,6 @@ if test "$ac_cv_header_sys_procfs_h" = yes; then
   fi
 fi
 
-dnl For native ports (host == target), check to see what kind of
-dnl legacy link.h support is needed.  (See solib-legacy.c.)
-if test ${host} = ${target} ; then
-  dnl Check for struct link_map with l_ members which are indicative
-  dnl of SVR4-like shared libraries
-
-  AC_MSG_CHECKING(for member l_addr in struct link_map)
-  AC_CACHE_VAL(gdb_cv_have_struct_link_map_with_l_members,
-    [AC_TRY_COMPILE([#include <link.h>],
-                    [struct link_map lm; (void) lm.l_addr;],
-                    gdb_cv_have_struct_link_map_with_l_members=yes,
-                    gdb_cv_have_struct_link_map_with_l_members=no)])
-  AC_MSG_RESULT($gdb_cv_have_struct_link_map_with_l_members)
-  if test $gdb_cv_have_struct_link_map_with_l_members = yes; then
-    AC_DEFINE(HAVE_STRUCT_LINK_MAP_WITH_L_MEMBERS,1,
-    [Define if <link.h> exists and defines struct link_map which has
-     members with an ``l_'' prefix.  (For Solaris, SVR4, and
-     SVR4-like systems.)])
-  fi
-
-  dnl Check for struct link_map with lm_ members which are indicative
-  dnl of SunOS-like shared libraries
-
-  AC_MSG_CHECKING(for member lm_addr in struct link_map)
-  AC_CACHE_VAL(gdb_cv_have_struct_link_map_with_lm_members,
-    [AC_TRY_COMPILE([#include <sys/types.h>
-#include <link.h>],
-                    [struct link_map lm; (void) lm.lm_addr;],
-                    gdb_cv_have_struct_link_map_with_lm_members=yes,
-                    gdb_cv_have_struct_link_map_with_lm_members=no)])
-  AC_MSG_RESULT($gdb_cv_have_struct_link_map_with_lm_members)
-  if test $gdb_cv_have_struct_link_map_with_lm_members = yes; then
-    AC_DEFINE(HAVE_STRUCT_LINK_MAP_WITH_LM_MEMBERS, 1,
-    [Define if <link.h> exists and defines struct link_map which has
-     members with an ``lm_'' prefix.  (For SunOS.)])
-  fi
-
-  dnl Check for struct so_map with som_ members which are found on 
-  dnl some *BSD systems.
-
-  AC_MSG_CHECKING(for member som_addr in struct so_map)
-  AC_CACHE_VAL(gdb_cv_have_struct_so_map_with_som_members,
-    [AC_TRY_COMPILE([#include <sys/types.h>
-#ifdef HAVE_NLIST_H
-#include <nlist.h>
-#endif
-#include <link.h>],
-                    [struct so_map lm; (void) lm.som_addr;],
-                    gdb_cv_have_struct_so_map_with_som_members=yes,
-                    gdb_cv_have_struct_so_map_with_som_members=no)])
-  AC_MSG_RESULT($gdb_cv_have_struct_so_map_with_som_members)
-  if test $gdb_cv_have_struct_so_map_with_som_members = yes; then
-    AC_DEFINE(HAVE_STRUCT_SO_MAP_WITH_SOM_MEMBERS, 1,
-    [Define if <link.h> exists and defines a struct so_map which has
-     members with an ``som_'' prefix.  (Found on older *BSD systems.)])
-  fi
-
-  dnl Check for struct link_map32 type, which allows a 64-bit Solaris
-  dnl debugger to debug a 32-bit Solaris app with 32-bit shared libraries.
-
-  AC_MSG_CHECKING(for struct link_map32 in sys/link.h)
-  AC_CACHE_VAL(gdb_cv_have_struct_link_map32, 
-    [AC_TRY_COMPILE([#define _SYSCALL32
-#include <sys/link.h>], [struct link_map32 l;],
-     gdb_cv_have_struct_link_map32=yes,
-     gdb_cv_have_struct_link_map32=no)])
-  AC_MSG_RESULT($gdb_cv_have_struct_link_map32)
-  if test $gdb_cv_have_struct_link_map32 = yes; then
-    AC_DEFINE(HAVE_STRUCT_LINK_MAP32, 1,
-    [Define if <sys/link.h> has struct link_map32])
-    AC_DEFINE(_SYSCALL32, 1,
-    [Define if <sys/link.h> has link_map32 (solaris sparc-64 target)])
-  fi
-fi
-
 # Check if the compiler supports the `long long' type.
 
 AC_CACHE_CHECK([for long long support in compiler], gdb_cv_c_long_long,