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Add 'getthrds' declaration check in configure for AIX

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On newer versions of AIX (6.x and later), this function is actually
declared in procinfo.h, thus causing a compilation warning when we
re-declare it ourselves. This patch adds a configure check for that
function allowing us to declare the function only if the declaration
isn't already present in one of procinfo system header.

gdb/ChangeLog:

        PR gdb/12116:
        * configure.ac: Add getthrds declaration check.
        * configure, config.in: Regenerate.
        * aix-thread.c (getthrds): Declare only if not already declared
        in procinfo.h.  More declaration out of get_signaled_thread to
        global scope.
This commit is contained in:
Joel Brobecker 2011-03-17 13:19:10 +00:00
parent a5f21126be
commit d645e32eb8
5 changed files with 38 additions and 4 deletions
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9
gdb/ChangeLog
View File

@ -1,3 +1,12 @@
2011-03-17 Joel Brobecker <brobecker@gnat.com>
PR gdb/12116:
* configure.ac: Add getthrds declaration check.
* configure, config.in: Regenerate.
* aix-thread.c (getthrds): Declare only if not already declared
in procinfo.h. More declaration out of get_signaled_thread to
global scope.
2011-03-17 Phil Muldoon <pmuldoon@redhat.com>
* python/py-symtab.c: Populate symtab_object_methods,

8
gdb/aix-thread.c
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@ -58,6 +58,10 @@
#include <sched.h>
#include <sys/pthdebug.h>
#if !HAVE_DECL_GETTHRDS
extern int getthrds (pid_t, struct thrdsinfo64 *, int, pthdb_tid_t *, int);
#endif
/* Whether to emit debugging output. */
static int debug_aix_thread;
@ -647,10 +651,6 @@ get_signaled_thread (void)
pthdb_tid_t ktid = 0;
int result = 0;
/* getthrds(3) isn't prototyped in any AIX 4.3.3 #include file. */
extern int getthrds (pid_t, struct thrdsinfo64 *,
int, pthdb_tid_t *, int);
while (1)
{
if (getthrds (PIDGET (inferior_ptid), &thrinf,

4
gdb/config.in
View File

@ -118,6 +118,10 @@
*/
#undef HAVE_DECL_GETOPT
/* Define to 1 if you have the declaration of `getthrds', and to 0 if you
don't. */
#undef HAVE_DECL_GETTHRDS
/* Define to 1 if you have the declaration of `malloc', and to 0 if you don't.
*/
#undef HAVE_DECL_MALLOC

16
gdb/configure vendored
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@ -14487,6 +14487,22 @@ $as_echo "$gdb_cv_have_aix_thread_debug" >&6; }
CONFIG_SRCS="${CONFIG_SRCS} aix-thread.c"
CONFIG_OBS="${CONFIG_OBS} aix-thread.o"
CONFIG_LDFLAGS="${CONFIG_LDFLAGS} -lpthdebug"
# Older versions of AIX do not provide the declaration for
# the getthrds function (it appears that it was introduced
# with AIX 6.x).
ac_fn_c_check_decl "$LINENO" "getthrds" "ac_cv_have_decl_getthrds" "#include <procinfo.h>
"
if test "x$ac_cv_have_decl_getthrds" = x""yes; then :
ac_have_decl=1
else
ac_have_decl=0
fi
cat >>confdefs.h <<_ACEOF
#define HAVE_DECL_GETTHRDS $ac_have_decl
_ACEOF
fi
;;
esac

5
gdb/configure.ac
View File

@ -1593,6 +1593,11 @@ if test ${build} = ${host} -a ${host} = ${target} ; then
CONFIG_SRCS="${CONFIG_SRCS} aix-thread.c"
CONFIG_OBS="${CONFIG_OBS} aix-thread.o"
CONFIG_LDFLAGS="${CONFIG_LDFLAGS} -lpthdebug"
# Older versions of AIX do not provide the declaration for
# the getthrds function (it appears that it was introduced
# with AIX 6.x).
AC_CHECK_DECLS(getthrds, [], [], [[#include <procinfo.h>]])
fi
;;
esac