Refine guard for vxworks crtstuff spec

Working on the reintroduction of shared libraries support
(and of modules depending on shared libraries) exposed a few
test failures of simple c++ constructor tests on arm-vxworks7r2.

Investigation revealed that we were not linking the
crtstuff objects as needed from a compiler configured not to
have shared libs support, because of the ENABLE_SHARED_LIBGCC
guard in this piece of vxworks.h:

  /* Setup the crtstuff begin/end we might need for dwarf EH registration
     and/or INITFINI_ARRAY support for shared libs.  */

  #if (HAVE_INITFINI_ARRAY_SUPPORT && defined(ENABLE_SHARED_LIBGCC)) \
      || (DWARF2_UNWIND_INFO && !defined(CONFIG_SJLJ_EXCEPTIONS))
  #define VX_CRTBEGIN_SPEC "%{!shared:vx_crtbegin.o%s;:vx_crtbeginS.o%s}"

crtstuff initfini array support is meant to be leveraged for
constructors regardless of whether the compiler also happens to be
configured with shared library support, so the guard on ENABLE_SHARED_LIBGCC
here is inappropriate.

This change just removes it,

2022-09-30  Olivier Hainque <hainque@adacore.com>

gcc/
	* config/vxworks.h (VX_CRTBEGIN_SPEC, VX_CRTEND_SPEC): If
	HAVE_INITFINI_ARRAY_SUPPORT, pick crtstuff objects regardless
	of ENABLE_SHARED_LIBGCC.

diff --git a/gcc/config/vxworks.h b/gcc/config/vxworks.h
index 6a88fb27e8ad7e40af090359220bbb094a4c02f7..f2103def448e9ca5ff950dab6330bb9a7be7d3fa 100644 (file)
--- a/gcc/config/vxworks.h
+++ b/gcc/config/vxworks.h
@@ -120,7 +120,7 @@ along with GCC; see the file COPYING3.  If not see
      -lc_internal after -lc -lgcc.
 
    - libc_internal also contains __init/__fini functions for
-     USE_INITFINI_ARRAY support. However, the system expects these in
+     INITFINI_ARRAY support. However, the system expects these in
      every shared lib as well, with slightly different names, and it is
      simpler for us to provide our own versions through vxcrtstuff.
 
@@ -225,10 +225,9 @@ along with GCC; see the file COPYING3.  If not see
 #endif
 
 /* Setup the crtstuff begin/end we might need for dwarf EH registration
-   and/or INITFINI_ARRAY support for shared libs.  */
-
-#if (HAVE_INITFINI_ARRAY_SUPPORT && defined(ENABLE_SHARED_LIBGCC)) \
-    || (DWARF2_UNWIND_INFO && !defined(CONFIG_SJLJ_EXCEPTIONS))
+   and/or INITFINI_ARRAY support.  */
+#if (HAVE_INITFINI_ARRAY_SUPPORT                                       \
+     || (DWARF2_UNWIND_INFO && !defined(CONFIG_SJLJ_EXCEPTIONS)))
 #define VX_CRTBEGIN_SPEC "%{!shared:vx_crtbegin.o%s;:vx_crtbeginS.o%s}"
 #define VX_CRTEND_SPEC   "%{!shared:vx_crtend.o%s;:vx_crtendS.o%s}"
 #else