From: Olivier Hainque <hainque@adacore.com>
Date: Tue, 18 Feb 2020 09:59:56 +0000 (+0000)
Subject: Fallback to default CPP spec for C++ on VxWorks
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d00f8b405679e2744e7a9789a7a6eaa6e2f21d78;p=gcc.git

Fallback to default CPP spec for C++ on VxWorks

Arrange to inhibit the effects of CPLUSPLUS_CPP_SPEC in gnu-user.h,
which #defines _GNU_SOURCE, which is invalid for VxWorks (possibly
not providing ::mkstemp, for example).

2020-10-14  Olivier Hainque  <hainque@adacore.com>

gcc/
	* config/vxworks.h: #undef CPLUSPLUS_CPP_SPEC.
---

diff --git a/gcc/config/vxworks.h b/gcc/config/vxworks.h
index e50260b08e4..d3c417e7f5a 100644
--- a/gcc/config/vxworks.h
+++ b/gcc/config/vxworks.h
@@ -70,6 +70,12 @@ along with GCC; see the file COPYING3.  If not see
 
 #endif
 
+/* Our ports rely on gnu-user.h, which #defines _POSIX_SOURCE for
+   C++ by default.  VxWorks doesn't provide 100% of what this implies
+   (e.g. ::mkstemp), so, arrange to prevent that by falling back to
+   the default CPP spec for C++ as well.  */
+#undef CPLUSPLUS_CPP_SPEC
+
 /* For VxWorks static rtps, the system provides libc_internal.a, a superset of
    libgcc.a that we need to use e.g. to satisfy references to __init and
    __fini.  We still want our libgcc to prevail for symbols it would provide