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fix "tkill" check 

An earlier patch removed the check for "syscall" since the results
were not used in the C code.  However, the result was used, via the
cache variable, elsewhere in configure.

This patch fixes the problem by checking for "syscall" at the point at
which HAVE_TKILL_SYSCALL is defined.

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

	* config.in, configure: Rebuild.
	* configure.ac (HAVE_TKILL_SYSCALL): Check for "syscall".
This commit is contained in:
Tom Tromey 2013-11-11 07:35:57 -07:00
parent 8ca5801b3a
commit 99c1d4518b
3 changed files with 15 additions and 3 deletions
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5
gdb/ChangeLog
View File

@ -1,3 +1,8 @@
2013-11-11 Tom Tromey <tromey@redhat.com>
* config.in, configure: Rebuild.
* configure.ac (HAVE_TKILL_SYSCALL): Check for "syscall".
2013-11-11 Joel Brobecker <brobecker@adacore.com>
* remote-sim.c (gdbsim_detach): Break declaration into

7
gdb/configure vendored
View File

@ -12454,10 +12454,15 @@ fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gdb_cv_sys_syscall_h_has_tkill" >&5
$as_echo "$gdb_cv_sys_syscall_h_has_tkill" >&6; }
fi
if test "x$gdb_cv_sys_syscall_h_has_tkill" = "xyes" && test "x$ac_cv_func_syscall" = "xyes"; then
if test "x$gdb_cv_sys_syscall_h_has_tkill" = "xyes"; then
ac_fn_c_check_func "$LINENO" "syscall" "ac_cv_func_syscall"
if test "x$ac_cv_func_syscall" = x""yes; then :
$as_echo "#define HAVE_TKILL_SYSCALL 1" >>confdefs.h
fi
fi
ac_fn_c_check_decl "$LINENO" "ADDR_NO_RANDOMIZE" "ac_cv_have_decl_ADDR_NO_RANDOMIZE" "#include <sys/personality.h>

6
gdb/configure.ac
View File

@ -1736,8 +1736,10 @@ if test "x$ac_cv_header_sys_syscall_h" = "xyes"; then
)
fi
dnl See if we can issue tkill syscall.
if test "x$gdb_cv_sys_syscall_h_has_tkill" = "xyes" && test "x$ac_cv_func_syscall" = "xyes"; then
AC_DEFINE(HAVE_TKILL_SYSCALL, 1, [Define if you support the tkill syscall.])
if test "x$gdb_cv_sys_syscall_h_has_tkill" = "xyes"; then
AC_CHECK_FUNC(syscall,
AC_DEFINE(HAVE_TKILL_SYSCALL, 1, [Define if you support the tkill syscall.])
)
fi
dnl Check if we can disable the virtual address space randomization.