configure.ac: Add check for sys/capability.h header.

	* configure.ac: Add check for sys/capability.h header.
	(have_capability): New substitution.
	* configure: Regenerate.
	* Makefile.in (GNATLIBCFLAGS_FOR_C): Add @have_capability@.

From-SVN: r248319

libada/ChangeLog

+2017-05-22  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* configure.ac: Add check for sys/capability.h header.
+	(have_capability): New substitution.
+	* configure: Regenerate.
+	* Makefile.in (GNATLIBCFLAGS_FOR_C): Add @have_capability@.
+
 2017-01-17  Jakub Jelinek  <jakub@redhat.com>
 
 	PR other/79046

libada/Makefile.in

@@ -61,7 +61,7 @@ PICFLAG = @PICFLAG@
 GNATLIBFLAGS= -W -Wall -gnatpg -nostdinc
 GNATLIBCFLAGS= -g -O2
 GNATLIBCFLAGS_FOR_C = -W -Wall $(GNATLIBCFLAGS) $(CFLAGS_FOR_TARGET) \
-	-fexceptions -DIN_RTS @have_getipinfo@
+	-fexceptions -DIN_RTS @have_getipinfo@ @have_capability@
 
 host_subdir = @host_subdir@
 GCC_DIR=$(MULTIBUILDTOP)../../$(host_subdir)/gcc

libada/configure.ac

@@ -144,6 +144,10 @@ if test x$have_unwind_getipinfo = xyes; then
 fi
 AC_SUBST(have_getipinfo)
 
+# Check for <sys/capability.h>
+AC_CHECK_HEADER([sys/capability.h], have_capability=-DHAVE_CAPABILITY, have_capability=)
+AC_SUBST(have_capability)
+
 # Determine what GCC version number to use in filesystem paths.
 GCC_BASE_VER