Inspired by one of Iain's patches for PR target/82920, this patch
rejects -mx32 on Solaris/x86, too: x32 won't be implemented on Solaris
and the failure if one tries to use it isn't very helpful otherwise:
$ gcc -mx32 -o hello hello.c
In file included from
/vol/gcc-9/lib/gcc/i386-pc-solaris2.11/9.1.0/include-fixed/sys/feature_tests.h:32,
from
/vol/gcc-9/lib/gcc/i386-pc-solaris2.11/9.1.0/include-fixed/stdio.h:24,
from hello.c:1:
/usr/include/sys/isa_defs.h:461:2: error: #error "Both _ILP32 and _LP64 are
defined"
461 | #error "Both _ILP32 and _LP64 are defined"
| ^~~~~
Bootstrapped without regressions on i386-pc-solaris2.11, installed on
mainline.
Rainer
--
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University
2019-05-19 Rainer Orth <r...@cebitec.uni-bielefeld.de>
* config/i386/sol2.h (CC1_SPEC): Reject -mx32.
# HG changeset patch
# Parent d206c777312bc2a8211d734e485031f191dce352
Reject -mx32 on Solaris/x86
diff --git a/gcc/config/i386/sol2.h b/gcc/config/i386/sol2.h
--- a/gcc/config/i386/sol2.h
+++ b/gcc/config/i386/sol2.h
@@ -55,7 +55,8 @@ along with GCC; see the file COPYING3.
#define CPP_SPEC "%(cpp_subtarget)"
#undef CC1_SPEC
-#define CC1_SPEC "%(cc1_cpu) " ASAN_CC1_SPEC
+#define CC1_SPEC "%(cc1_cpu) " ASAN_CC1_SPEC \
+ " %{mx32:%e-mx32 is not supported on Solaris}"
/* GNU as understands --32 and --64, but the native Solaris
assembler requires -xarch=generic or -xarch=generic64 instead. */
