[PATCH 10/16] gdb, gdbserver: remove configure checks already done by GDB_AC_COMMON

[Simon Marchi <simon.marchi@efficios.com>]

GDB_AC_COMMON, in gdbsupport/common.m4, already performs these checks,
so doing them again in the configure.ac files is redundant:

 - in gdb: sys/resource.h, sys/socket.h, termios.h, thread_db.h,
   getrlimit and AM_LANGINFO_CODESET

 - in gdbserver: linux/elf.h, sys/socket.h, termios.h and
   AC_FUNC_FORK

Remove them.

Regenerate configure in gdb and gdbserver.

Change-Id: I3ef2b19129a3ca5758d696447c5479255aadb175
---
 gdb/configure          |  51 ----------
 gdb/configure.ac       |   7 --
 gdbserver/configure    | 216 -----------------------------------------
 gdbserver/configure.ac |   4 -
 4 files changed, 278 deletions(-)

diff --git a/gdb/configure b/gdb/configure
index a64e382fa377..21168d43b68b 100755
--- a/gdb/configure
+++ b/gdb/configure
@@ -29158,9 +29158,6 @@ for ac_header in  \
   sys/procctl.h \
   sys/ptrace.h \
   sys/reg.h \
-  sys/resource.h \
-  termios.h \
-  thread_db.h \
 
 do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
@@ -29230,18 +29227,6 @@ fi
 done
 
 
-for ac_header in sys/socket.h
-do :
-  ac_fn_c_check_header_mongrel "$LINENO" "sys/socket.h" "ac_cv_header_sys_socket_h" "$ac_includes_default"
-if test "x$ac_cv_header_sys_socket_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_SYS_SOCKET_H 1
-_ACEOF
-
-fi
-
-done
-
 for ac_header in ws2tcpip.h
 do :
   ac_fn_c_check_header_mongrel "$LINENO" "ws2tcpip.h" "ac_cv_header_ws2tcpip_h" "$ac_includes_default"
@@ -29869,7 +29854,6 @@ for ac_func in  \
   clearenv \
   getgid \
   getpgid \
-  getrlimit \
   getuid \
   iconvlist \
   init_extended_color \
@@ -29899,41 +29883,6 @@ fi
 done
 
 
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for nl_langinfo and CODESET" >&5
-$as_echo_n "checking for nl_langinfo and CODESET... " >&6; }
-if ${am_cv_langinfo_codeset+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <langinfo.h>
-int
-main ()
-{
-char* cs = nl_langinfo(CODESET);
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  am_cv_langinfo_codeset=yes
-else
-  am_cv_langinfo_codeset=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_langinfo_codeset" >&5
-$as_echo "$am_cv_langinfo_codeset" >&6; }
-  if test $am_cv_langinfo_codeset = yes; then
-
-$as_echo "#define HAVE_LANGINFO_CODESET 1" >>confdefs.h
-
-  fi
-
-
 # Check the return and argument types of ptrace.
 
 
diff --git a/gdb/configure.ac b/gdb/configure.ac
index 6545320b7b96..890e2f2849de 100644
--- a/gdb/configure.ac
+++ b/gdb/configure.ac
@@ -1456,9 +1456,6 @@ AC_CHECK_HEADERS([ \
   sys/procctl.h \
   sys/ptrace.h \
   sys/reg.h \
-  sys/resource.h \
-  termios.h \
-  thread_db.h \
 ])
 
 AC_CHECK_HEADERS(sys/user.h, [], [],
@@ -1482,7 +1479,6 @@ AC_CHECK_HEADERS(term.h, [], [],
 #endif
 ])
 
-AC_CHECK_HEADERS([sys/socket.h])
 AC_CHECK_HEADERS([ws2tcpip.h])
 AC_CHECK_HEADERS([execinfo.h])
 
@@ -1525,7 +1521,6 @@ AC_CHECK_FUNCS([ \
   clearenv \
   getgid \
   getpgid \
-  getrlimit \
   getuid \
   iconvlist \
   init_extended_color \
@@ -1544,8 +1539,6 @@ AC_CHECK_FUNCS([ \
   wresize \
 ])
 
-AM_LANGINFO_CODESET
-
 # Check the return and argument types of ptrace.
 GDB_AC_PTRACE
 
diff --git a/gdbserver/configure b/gdbserver/configure
index 6cf97b7ab5d7..d695c6191e33 100755
--- a/gdbserver/configure
+++ b/gdbserver/configure
@@ -12547,7 +12547,6 @@ fi
 for ac_header in  \
   arpa/inet.h \
   fcntl.h \
-  linux/elf.h \
   netdb.h \
   netinet/in.h \
   netinet/tcp.h \
@@ -12556,8 +12555,6 @@ for ac_header in  \
   sys/ioctl.h \
   sys/procfs.h \
   sys/reg.h \
-  sys/socket.h \
-  termios.h \
   ws2tcpip.h \
 
 do :
@@ -12573,219 +12570,6 @@ fi
 done
 
 
-for ac_header in vfork.h
-do :
-  ac_fn_c_check_header_mongrel "$LINENO" "vfork.h" "ac_cv_header_vfork_h" "$ac_includes_default"
-if test "x$ac_cv_header_vfork_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_VFORK_H 1
-_ACEOF
-
-fi
-
-done
-
-for ac_func in fork vfork
-do :
-  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-if test "x$ac_cv_func_fork" = xyes; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for working fork" >&5
-$as_echo_n "checking for working fork... " >&6; }
-if ${ac_cv_func_fork_works+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test "$cross_compiling" = yes; then :
-  ac_cv_func_fork_works=cross
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-$ac_includes_default
-int
-main ()
-{
-
-	  /* By Ruediger Kuhlmann. */
-	  return fork () < 0;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ac_cv_func_fork_works=yes
-else
-  ac_cv_func_fork_works=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_fork_works" >&5
-$as_echo "$ac_cv_func_fork_works" >&6; }
-
-else
-  ac_cv_func_fork_works=$ac_cv_func_fork
-fi
-if test "x$ac_cv_func_fork_works" = xcross; then
-  case $host in
-    *-*-amigaos* | *-*-msdosdjgpp*)
-      # Override, as these systems have only a dummy fork() stub
-      ac_cv_func_fork_works=no
-      ;;
-    *)
-      ac_cv_func_fork_works=yes
-      ;;
-  esac
-  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: result $ac_cv_func_fork_works guessed because of cross compilation" >&5
-$as_echo "$as_me: WARNING: result $ac_cv_func_fork_works guessed because of cross compilation" >&2;}
-fi
-ac_cv_func_vfork_works=$ac_cv_func_vfork
-if test "x$ac_cv_func_vfork" = xyes; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for working vfork" >&5
-$as_echo_n "checking for working vfork... " >&6; }
-if ${ac_cv_func_vfork_works+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test "$cross_compiling" = yes; then :
-  ac_cv_func_vfork_works=cross
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-/* Thanks to Paul Eggert for this test.  */
-$ac_includes_default
-#include <sys/wait.h>
-#ifdef HAVE_VFORK_H
-# include <vfork.h>
-#endif
-/* On some sparc systems, changes by the child to local and incoming
-   argument registers are propagated back to the parent.  The compiler
-   is told about this with #include <vfork.h>, but some compilers
-   (e.g. gcc -O) don't grok <vfork.h>.  Test for this by using a
-   static variable whose address is put into a register that is
-   clobbered by the vfork.  */
-static void
-#ifdef __cplusplus
-sparc_address_test (int arg)
-# else
-sparc_address_test (arg) int arg;
-#endif
-{
-  static pid_t child;
-  if (!child) {
-    child = vfork ();
-    if (child < 0) {
-      perror ("vfork");
-      _exit(2);
-    }
-    if (!child) {
-      arg = getpid();
-      write(-1, "", 0);
-      _exit (arg);
-    }
-  }
-}
-
-int
-main ()
-{
-  pid_t parent = getpid ();
-  pid_t child;
-
-  sparc_address_test (0);
-
-  child = vfork ();
-
-  if (child == 0) {
-    /* Here is another test for sparc vfork register problems.  This
-       test uses lots of local variables, at least as many local
-       variables as main has allocated so far including compiler
-       temporaries.  4 locals are enough for gcc 1.40.3 on a Solaris
-       4.1.3 sparc, but we use 8 to be safe.  A buggy compiler should
-       reuse the register of parent for one of the local variables,
-       since it will think that parent can't possibly be used any more
-       in this routine.  Assigning to the local variable will thus
-       munge parent in the parent process.  */
-    pid_t
-      p = getpid(), p1 = getpid(), p2 = getpid(), p3 = getpid(),
-      p4 = getpid(), p5 = getpid(), p6 = getpid(), p7 = getpid();
-    /* Convince the compiler that p..p7 are live; otherwise, it might
-       use the same hardware register for all 8 local variables.  */
-    if (p != p1 || p != p2 || p != p3 || p != p4
-	|| p != p5 || p != p6 || p != p7)
-      _exit(1);
-
-    /* On some systems (e.g. IRIX 3.3), vfork doesn't separate parent
-       from child file descriptors.  If the child closes a descriptor
-       before it execs or exits, this munges the parent's descriptor
-       as well.  Test for this by closing stdout in the child.  */
-    _exit(close(fileno(stdout)) != 0);
-  } else {
-    int status;
-    struct stat st;
-
-    while (wait(&status) != child)
-      ;
-    return (
-	 /* Was there some problem with vforking?  */
-	 child < 0
-
-	 /* Did the child fail?  (This shouldn't happen.)  */
-	 || status
-
-	 /* Did the vfork/compiler bug occur?  */
-	 || parent != getpid()
-
-	 /* Did the file descriptor bug occur?  */
-	 || fstat(fileno(stdout), &st) != 0
-	 );
-  }
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ac_cv_func_vfork_works=yes
-else
-  ac_cv_func_vfork_works=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_vfork_works" >&5
-$as_echo "$ac_cv_func_vfork_works" >&6; }
-
-fi;
-if test "x$ac_cv_func_fork_works" = xcross; then
-  ac_cv_func_vfork_works=$ac_cv_func_vfork
-  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: result $ac_cv_func_vfork_works guessed because of cross compilation" >&5
-$as_echo "$as_me: WARNING: result $ac_cv_func_vfork_works guessed because of cross compilation" >&2;}
-fi
-
-if test "x$ac_cv_func_vfork_works" = xyes; then
-
-$as_echo "#define HAVE_WORKING_VFORK 1" >>confdefs.h
-
-else
-
-$as_echo "#define vfork fork" >>confdefs.h
-
-fi
-if test "x$ac_cv_func_fork_works" = xyes; then
-
-$as_echo "#define HAVE_WORKING_FORK 1" >>confdefs.h
-
-fi
-
 for ac_func in  \
   pread \
   pread64 \
diff --git a/gdbserver/configure.ac b/gdbserver/configure.ac
index 217564716147..1f461fa05727 100644
--- a/gdbserver/configure.ac
+++ b/gdbserver/configure.ac
@@ -68,7 +68,6 @@ ZW_GNU_GETTEXT_SISTER_DIR
 AC_CHECK_HEADERS([ \
   arpa/inet.h \
   fcntl.h \
-  linux/elf.h \
   netdb.h \
   netinet/in.h \
   netinet/tcp.h \
@@ -77,12 +76,9 @@ AC_CHECK_HEADERS([ \
   sys/ioctl.h \
   sys/procfs.h \
   sys/reg.h \
-  sys/socket.h \
-  termios.h \
   ws2tcpip.h \
 ])
 
-AC_FUNC_FORK
 AC_CHECK_FUNCS([ \
   pread \
   pread64 \
-- 
2.56.0