Comment about HAVE_INITFINI_ARRAY_SUPPORT in vxworks.h

Explain that we rely on compiler .c files
to include auto-host.h before target configuration headers.

2022-09-29  Olivier Hainque  <hainque@adacore.com>

gcc/
	* config/vxworks.h: Add comment on our use of
	HAVE_INITFINI_ARRAY_SUPPORT.

diff --git a/gcc/config/vxworks.h b/gcc/config/vxworks.h
index 6a5f2f8f2eca6488c67bb31bf1fb972e1314f89f..6a88fb27e8ad7e40af090359220bbb094a4c02f7 100644 (file)
--- a/gcc/config/vxworks.h
+++ b/gcc/config/vxworks.h
@@ -19,6 +19,11 @@ You should have received a copy of the GNU General Public License
 along with GCC; see the file COPYING3.  If not see
 <http://www.gnu.org/licenses/>.  */
 
+/* ??? We use HAVE_INITFINI_ARRAY_SUPPORT in preprocessor guards in this
+   header, which is conveyed by auto-host.h despite being a target property.
+   #include auto-host.h here would trigger lots of conflicts so we rely on
+   compiler .c files doing this before target configuration headers.  */
+
 /* Assert that we are targeting VxWorks.  */
 #undef TARGET_VXWORKS
 #define TARGET_VXWORKS 1