[PATCH v2 6/6] remove unused gdbserver configury

[Tom Tromey <tromey at redhat dot com>]

This updates gdbserver's configure.ac to remove checks that aren't
directly needed by gdbserver.

2013-11-05  Tom Tromey  <tromey@redhat.com>

	* configure, config.in: Rebuild.
	* configure.ac: Remove unused configury.
---
 gdb/gdbserver/ChangeLog    |  5 ++++
 gdb/gdbserver/config.in    |  6 ----
 gdb/gdbserver/configure    | 69 ++--------------------------------------------
 gdb/gdbserver/configure.ac | 25 +++--------------
 4 files changed, 11 insertions(+), 94 deletions(-)

diff --git a/gdb/gdbserver/config.in b/gdb/gdbserver/config.in
index bd5c586..d0976c1 100644
--- a/gdb/gdbserver/config.in
+++ b/gdb/gdbserver/config.in
@@ -58,9 +58,6 @@
 /* Define if <sys/procfs.h> has elf_fpregset_t. */
 #undef HAVE_ELF_FPREGSET_T
 
-/* Define if errno is available */
-#undef HAVE_ERRNO
-
 /* Define to 1 if you have the <errno.h> header file. */
 #undef HAVE_ERRNO_H
 
@@ -256,9 +253,6 @@
 /* Define to 1 if you have the <wait.h> header file. */
 #undef HAVE_WAIT_H
 
-/* Checking if errno must be defined */
-#undef MUST_DEFINE_ERRNO
-
 /* Define to the address where bug reports for this package should be sent. */
 #undef PACKAGE_BUGREPORT
 
diff --git a/gdb/gdbserver/configure b/gdb/gdbserver/configure
index a4ea2ca..6bef97c 100755
--- a/gdb/gdbserver/configure
+++ b/gdb/gdbserver/configure
@@ -4873,7 +4873,7 @@ $as_echo "$as_me: running $SHELL $ac_sub_configure $ac_sub_configure_args --cach
   cd "$ac_popdir"
 
 
-for ac_header in sgtty.h termio.h termios.h sys/reg.h string.h 		 proc_service.h sys/procfs.h thread_db.h linux/elf.h 		 stdlib.h 		 errno.h fcntl.h signal.h sys/file.h malloc.h 		 sys/ioctl.h netinet/in.h sys/socket.h netdb.h 		 netinet/tcp.h arpa/inet.h sys/wait.h wait.h sys/un.h 		 linux/perf_event.h sys/syscall.h
+for ac_header in sgtty.h termio.h termios.h sys/reg.h string.h 		 proc_service.h sys/procfs.h linux/elf.h 		 stdlib.h 		 errno.h fcntl.h signal.h sys/file.h malloc.h 		 sys/ioctl.h netinet/in.h sys/socket.h netdb.h 		 netinet/tcp.h arpa/inet.h
 do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
@@ -4887,7 +4887,7 @@ fi
 
 done
 
-for ac_func in pread pwrite pread64 readlink fdwalk pipe2
+for ac_func in pread pwrite pread64 readlink
 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"
@@ -5627,61 +5627,6 @@ done
 
 LIBS="$old_LIBS"
 
-have_errno=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for errno" >&5
-$as_echo_n "checking for errno... " >&6; }
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#if HAVE_ERRNO_H
-#include <errno.h>
-#endif
-int
-main ()
-{
-static int x; x = errno;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes - in errno.h" >&5
-$as_echo "yes - in errno.h" >&6; };
-$as_echo "#define HAVE_ERRNO 1" >>confdefs.h
- have_errno=yes
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-if test $have_errno = no; then
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#if HAVE_ERRNO_H
-#include <errno.h>
-#endif
-int
-main ()
-{
-extern int errno; static int x; x = errno;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes - must define" >&5
-$as_echo "yes - must define" >&6; };
-$as_echo "#define HAVE_ERRNO 1" >>confdefs.h
-
-$as_echo "#define MUST_DEFINE_ERRNO 1" >>confdefs.h
-
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-fi
-
 ac_fn_c_check_decl "$LINENO" "strerror" "ac_cv_have_decl_strerror" "$ac_includes_default"
 if test "x$ac_cv_have_decl_strerror" = x""yes; then :
   ac_have_decl=1
@@ -5692,16 +5637,6 @@ fi
 cat >>confdefs.h <<_ACEOF
 #define HAVE_DECL_STRERROR $ac_have_decl
 _ACEOF
-ac_fn_c_check_decl "$LINENO" "strstr" "ac_cv_have_decl_strstr" "$ac_includes_default"
-if test "x$ac_cv_have_decl_strstr" = x""yes; then :
-  ac_have_decl=1
-else
-  ac_have_decl=0
-fi
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_STRSTR $ac_have_decl
-_ACEOF
 ac_fn_c_check_decl "$LINENO" "perror" "ac_cv_have_decl_perror" "$ac_includes_default"
 if test "x$ac_cv_have_decl_perror" = x""yes; then :
   ac_have_decl=1
diff --git a/gdb/gdbserver/configure.ac b/gdb/gdbserver/configure.ac
index 086457c..3bed876 100644
--- a/gdb/gdbserver/configure.ac
+++ b/gdb/gdbserver/configure.ac
@@ -79,13 +79,12 @@ AC_PROG_MAKE_SET
 ACX_CONFIGURE_DIR(["../gnulib"], ["build-gnulib-gdbserver"])
 
 AC_CHECK_HEADERS(sgtty.h termio.h termios.h sys/reg.h string.h dnl
-		 proc_service.h sys/procfs.h thread_db.h linux/elf.h dnl
+		 proc_service.h sys/procfs.h linux/elf.h dnl
 		 stdlib.h dnl
 		 errno.h fcntl.h signal.h sys/file.h malloc.h dnl
 		 sys/ioctl.h netinet/in.h sys/socket.h netdb.h dnl
-		 netinet/tcp.h arpa/inet.h sys/wait.h wait.h sys/un.h dnl
-		 linux/perf_event.h sys/syscall.h)
-AC_CHECK_FUNCS(pread pwrite pread64 readlink fdwalk pipe2)
+		 netinet/tcp.h arpa/inet.h)
+AC_CHECK_FUNCS(pread pwrite pread64 readlink)
 AC_REPLACE_FUNCS(vasprintf vsnprintf)
 
 GDB_AC_COMMON
@@ -189,23 +188,7 @@ LIBS="$LIBS -ldl"
 AC_CHECK_FUNCS(dladdr)
 LIBS="$old_LIBS"
 
-have_errno=no
-AC_MSG_CHECKING(for errno)
-AC_TRY_LINK([
-#if HAVE_ERRNO_H
-#include <errno.h>
-#endif], [static int x; x = errno;],
-  [AC_MSG_RESULT(yes - in errno.h); AC_DEFINE(HAVE_ERRNO, 1, [Define if errno is available]) have_errno=yes])
-if test $have_errno = no; then
-AC_TRY_LINK([
-#if HAVE_ERRNO_H
-#include <errno.h>
-#endif], [extern int errno; static int x; x = errno;],
-  [AC_MSG_RESULT(yes - must define); AC_DEFINE(HAVE_ERRNO, 1, [Define if errno is available]) AC_DEFINE(MUST_DEFINE_ERRNO, 1, [Checking if errno must be defined])],
-  [AC_MSG_RESULT(no)])
-fi
-
-AC_CHECK_DECLS([strerror, strstr, perror, vasprintf, vsnprintf])
+AC_CHECK_DECLS([strerror, perror, vasprintf, vsnprintf])
 
 AC_CHECK_TYPES(socklen_t, [], [],
 [#include <sys/types.h>
-- 
1.8.1.4