t-vxworks (LIBGCC_INCLUDES): Add -I$(MULTIBUILDTOP)../../gcc/include.

2018-06-07  Olivier Hainque  <hainque@adacore.com>

        * config/t-vxworks (LIBGCC_INCLUDES): Add
        -I$(MULTIBUILDTOP)../../gcc/include.
        * config/t-vxworks7: Likewise. Reformat a bit to match
        the t-vxworks layout.

From-SVN: r261273

libgcc/ChangeLog

+2018-06-07  Olivier Hainque  <hainque@adacore.com>
+
+	* config/t-vxworks (LIBGCC_INCLUDES): Add
+	-I$(MULTIBUILDTOP)../../gcc/include.
+	* config/t-vxworks7: Likewise. Reformat a bit to match
+	the t-vxworks layout.
+
 2018-06-07  Olga Makhotina  <olga.makhotina@intel.com>
 
 	* config/i386/cpuinfo.h (processor_types): Add INTEL_TREMONT.

libgcc/config/t-vxworks

@@ -7,8 +7,10 @@ LIB2ADDEH += $(srcdir)/config/vxlib.c $(srcdir)/config/vxlib-tls.c
 # This ensures that the correct target headers are used; some VxWorks
 # system headers have names that collide with GCC's internal (host)
 # headers, e.g. regs.h. Make sure the local libgcc headers still
-# prevail (e.g. unwind.h).
+# prevail (e.g. unwind.h), and that gcc provided header files intended
+# to be user visible eventually are visible as well.
 LIBGCC2_INCLUDES = -nostdinc -I. \
+  -I$(MULTIBUILDTOP)../../gcc/include \
   `case "/$(MULTIDIR)" in \
      */mrtp*) echo -I$(WIND_USR)/h -I$(WIND_USR)/h/wrn/coreip ;; \
      *) echo -I$(WIND_BASE)/target/h -I$(WIND_BASE)/target/h/wrn/coreip ;; \

libgcc/config/t-vxworks7

@@ -7,9 +7,11 @@ LIB2ADDEH += $(srcdir)/config/vxlib.c $(srcdir)/config/vxlib-tls.c
 # This ensures that the correct target headers are used; some VxWorks
 # system headers have names that collide with GCC's internal (host)
 # headers, e.g. regs.h. Make sure the local libgcc headers still
-# prevail (e.g. unwind.h).
-LIBGCC2_INCLUDES = -nostdinc \
-  -I. -I$(VSB_DIR)/h -I$(VSB_DIR)/share/h \
+# prevail (e.g. unwind.h), and that gcc provided header files intended
+# to be user visible eventually are visible as well.
+LIBGCC2_INCLUDES = -nostdinc -I. \
+  -I$(VSB_DIR)/h -I$(VSB_DIR)/share/h \
+  -I$(MULTIBUILDTOP)../../gcc/include \
   `case "/$(MULTIDIR)" in \
       */mrtp*) echo -I$(VSB_DIR)/usr/h/public -I$(VSB_DIR)/usr/h ;; \
       *) echo -I$(VSB_DIR)/krnl/h/system -I$(VSB_DIR)/krnl/h/public ;; \