[Bug target/97815] New: QNX should use thread_file=posix instead of defining THREAD_MODEL_SPEC

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97815

            Bug ID: 97815
           Summary: QNX should use thread_file=posix instead of defining
                    THREAD_MODEL_SPEC
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: redi at gcc dot gnu.org
                CC: mdaniels at qnx dot com
            Blocks: 63287
  Target Milestone: ---
            Target: i?86-*-nto-qnx*

gcc/config/i386/nto.h has:

#undef THREAD_MODEL_SPEC
#define THREAD_MODEL_SPEC "posix"

It's unnecessary to use the spec hook for this, as there's only a single value.

I think this is the right way to do it (untested):

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 15318b20ce03..5a8c8cbebd72 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -2018,6 +2018,7 @@ i[34567]86-*-lynxos*)
 i[34567]86-*-nto-qnx*)
        tm_file="${tm_file} i386/att.h dbxelf.h tm-dwarf2.h elfos.h i386/unix.h
i386/nto.h"
        extra_options="${extra_options} i386/nto.opt"
+       thread_file=posix
        gnu_ld=yes
        gas=yes
        ;;
diff --git a/gcc/config/i386/nto.h b/gcc/config/i386/nto.h
index c09c2b17fc05..2335d38ce9f0 100644
--- a/gcc/config/i386/nto.h
+++ b/gcc/config/i386/nto.h
@@ -36,9 +36,6 @@ along with GCC; see the file COPYING3.  If not see
     }                                          \
   while (0)

-#undef THREAD_MODEL_SPEC
-#define THREAD_MODEL_SPEC "posix"
-
 #ifdef CROSS_DIRECTORY_STRUCTURE
 #define SYSROOT_SUFFIX_SPEC "x86"
 #endif


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63287
[Bug 63287] __STDCPP_THREADS__ is not defined