2014-01-23 Yury Gribov <y.gribov@samsung.com>

	    Jakub Jelinek  <jakub@redhat.com>

	PR sanitizer/57316
	* configure.ac: Check for missing syscalls.
	* Makefile.am: Likewise.
	* configure: Regenerate.
	* Makefile.in: Regenerate.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206966 138bc75d-0d04-0410-961f-82ee72b054a4

5 files changed, 84 insertions, 7 deletions

diff --git a/libsanitizer/ChangeLog b/libsanitizer/ChangeLog
index 30a26bcd4ef..f4cc57f83f1 100644
--- a/libsanitizer/ChangeLog
+++ b/libsanitizer/ChangeLog
@@ -1,3 +1,12 @@
+2014-01-23  Yury Gribov  <y.gribov@samsung.com>
+	    Jakub Jelinek  <jakub@redhat.com>
+
+	PR sanitizer/57316
+	* configure.ac: Check for missing syscalls.
+	* Makefile.am: Likewise.
+	* configure: Regenerate.
+	* Makefile.in: Regenerate.
+
 2014-01-09  Jakub Jelinek  <jakub@redhat.com>
 
 	* sanitizer_common/sanitizer_symbolizer_libbacktrace.h
diff --git a/libsanitizer/Makefile.am b/libsanitizer/Makefile.am
index a17f7b6af86..b0dc582ccfb 100644
--- a/libsanitizer/Makefile.am
+++ b/libsanitizer/Makefile.am
@@ -1,5 +1,6 @@
 ACLOCAL_AMFLAGS = -I .. -I ../config
 
+if SANITIZER_SUPPORTED
 SUBDIRS = sanitizer_common
 if !USING_MAC_INTERPOSE
 SUBDIRS += interception
@@ -11,6 +12,7 @@ SUBDIRS += lsan asan ubsan
 if TSAN_SUPPORTED
 SUBDIRS += tsan
 endif
+endif
 
 ## May be used by toolexeclibdir.
 gcc_version := $(shell cat $(top_srcdir)/../gcc/BASE-VER)
diff --git a/libsanitizer/Makefile.in b/libsanitizer/Makefile.in
index 5a33e0ec529..60cbe2ee554 100644
--- a/libsanitizer/Makefile.in
+++ b/libsanitizer/Makefile.in
@@ -35,9 +35,9 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 target_triplet = @target@
-@USING_MAC_INTERPOSE_FALSE@am__append_1 = interception
-@LIBBACKTRACE_SUPPORTED_TRUE@am__append_2 = libbacktrace
-@TSAN_SUPPORTED_TRUE@am__append_3 = tsan
+@SANITIZER_SUPPORTED_TRUE@@USING_MAC_INTERPOSE_FALSE@am__append_1 = interception
+@LIBBACKTRACE_SUPPORTED_TRUE@@SANITIZER_SUPPORTED_TRUE@am__append_2 = libbacktrace
+@SANITIZER_SUPPORTED_TRUE@@TSAN_SUPPORTED_TRUE@am__append_3 = tsan
 subdir = .
 DIST_COMMON = ChangeLog $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
 	$(top_srcdir)/configure $(am__configure_deps) \
@@ -250,8 +250,9 @@ top_build_prefix = @top_build_prefix@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 ACLOCAL_AMFLAGS = -I .. -I ../config
-SUBDIRS = sanitizer_common $(am__append_1) $(am__append_2) lsan asan \
-	ubsan $(am__append_3)
+@SANITIZER_SUPPORTED_TRUE@SUBDIRS = sanitizer_common $(am__append_1) \
+@SANITIZER_SUPPORTED_TRUE@	$(am__append_2) lsan asan ubsan \
+@SANITIZER_SUPPORTED_TRUE@	$(am__append_3)
 gcc_version := $(shell cat $(top_srcdir)/../gcc/BASE-VER)
 
 # Work around what appears to be a GNU make bug handling MAKEFLAGS
diff --git a/libsanitizer/configure b/libsanitizer/configure
index c20735921ef..5e4840ffea4 100755
--- a/libsanitizer/configure
+++ b/libsanitizer/configure
@@ -612,6 +612,8 @@ ALLOC_FILE
 VIEW_FILE
 BACKTRACE_SUPPORTED
 FORMAT_FILE
+SANITIZER_SUPPORTED_FALSE
+SANITIZER_SUPPORTED_TRUE
 USING_MAC_INTERPOSE_FALSE
 USING_MAC_INTERPOSE_TRUE
 link_liblsan
@@ -12017,7 +12019,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12020 "configure"
+#line 12022 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12123,7 +12125,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12126 "configure"
+#line 12128 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -15586,6 +15588,47 @@ fi
 
 backtrace_supported=yes
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for necessary platform features" >&5
+$as_echo_n "checking for necessary platform features... " >&6; }
+case "$target" in
+  *-*-linux*)
+    # Some old Linux distributions miss required syscalls.
+    sanitizer_supported=no
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/syscall.h>
+int
+main ()
+{
+
+      syscall (__NR_gettid);
+      syscall (__NR_futex);
+      syscall (__NR_exit_group);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  sanitizer_supported=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+    ;;
+  *)
+    sanitizer_supported=yes
+    ;;
+esac
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $sanitizer_supported" >&5
+$as_echo "$sanitizer_supported" >&6; }
+ if test "$sanitizer_supported" = yes; then
+  SANITIZER_SUPPORTED_TRUE=
+  SANITIZER_SUPPORTED_FALSE='#'
+else
+  SANITIZER_SUPPORTED_TRUE='#'
+  SANITIZER_SUPPORTED_FALSE=
+fi
+
+
 # Test for __sync support.
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking __sync extensions" >&5
 $as_echo_n "checking __sync extensions... " >&6; }
@@ -16456,6 +16499,10 @@ if test -z "${USING_MAC_INTERPOSE_TRUE}" && test -z "${USING_MAC_INTERPOSE_FALSE
   as_fn_error "conditional \"USING_MAC_INTERPOSE\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${SANITIZER_SUPPORTED_TRUE}" && test -z "${SANITIZER_SUPPORTED_FALSE}"; then
+  as_fn_error "conditional \"SANITIZER_SUPPORTED\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 if test -z "${LIBBACKTRACE_SUPPORTED_TRUE}" && test -z "${LIBBACKTRACE_SUPPORTED_FALSE}"; then
   as_fn_error "conditional \"LIBBACKTRACE_SUPPORTED\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
diff --git a/libsanitizer/configure.ac b/libsanitizer/configure.ac
index c4641d47286..e6721312d0c 100644
--- a/libsanitizer/configure.ac
+++ b/libsanitizer/configure.ac
@@ -132,6 +132,24 @@ AM_CONDITIONAL(USING_MAC_INTERPOSE, $MAC_INTERPOSE)
 
 backtrace_supported=yes
 
+AC_MSG_CHECKING([for necessary platform features])
+case "$target" in
+  *-*-linux*)
+    # Some old Linux distributions miss required syscalls.
+    sanitizer_supported=no
+    AC_TRY_COMPILE([#include <sys/syscall.h>],[
+      syscall (__NR_gettid);
+      syscall (__NR_futex);
+      syscall (__NR_exit_group);
+    ], [sanitizer_supported=yes])
+    ;;
+  *)
+    sanitizer_supported=yes
+    ;;
+esac
+AC_MSG_RESULT($sanitizer_supported)
+AM_CONDITIONAL(SANITIZER_SUPPORTED, test "$sanitizer_supported" = yes)
+
 # Test for __sync support.
 AC_CACHE_CHECK([__sync extensions],
 [libsanitizer_cv_sys_sync],