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[Emacs-diffs] master b48197d: Merge from gnulib
From: |
Paul Eggert |
Subject: |
[Emacs-diffs] master b48197d: Merge from gnulib |
Date: |
Tue, 15 Mar 2016 20:59:48 +0000 |
branch: master
commit b48197d8eda0d4fe221a128d862807d804e2ebf0
Author: Paul Eggert <address@hidden>
Commit: Paul Eggert <address@hidden>
Merge from gnulib
This incorporates:
2016-03-15 std-gnu11: improve clang support
* m4/std-gnu11.m4: Copy from gnulib.
---
m4/std-gnu11.m4 | 20 +++++++++++++-------
1 files changed, 13 insertions(+), 7 deletions(-)
diff --git a/m4/std-gnu11.m4 b/m4/std-gnu11.m4
index a687cdb..e8d3ebc 100644
--- a/m4/std-gnu11.m4
+++ b/m4/std-gnu11.m4
@@ -1,8 +1,8 @@
# Prefer GNU C11 and C++11 to earlier versions. -*- coding: utf-8 -*-
# This implementation is taken from GNU Autoconf lib/autoconf/c.m4
-# commit 5ad3567c3cbd90b4faa6539c35bc4a8c6500f535
-# dated 2015-10-08 10:12:41 2015 +0200.
+# commit 739cdc82b5325402231f3f5e1a38f681fcbd1db2
+# dated Tue Mar 15 09:34:11 2016 -0700.
# This implementation will be obsolete once we can assume Autoconf 2.70
# or later is installed everywhere a Gnulib program might be developed.
@@ -58,6 +58,9 @@ fi
if test -z "$CC"; then
AC_CHECK_TOOLS(CC, cl.exe)
fi
+if test -z "$CC"; then
+ AC_CHECK_TOOL(CC, clang)
+fi
])
test -z "$CC" && AC_MSG_FAILURE([no acceptable C compiler found in \$PATH])
@@ -123,7 +126,7 @@ if test -z "$CXX"; then
else
AC_CHECK_TOOLS(CXX,
[m4_default([$1],
- [g++ c++ gpp aCC CC cxx cc++ cl.exe FCC KCC RCC
xlC_r xlC])],
+ [g++ c++ gpp aCC CC cxx cc++ cl.exe FCC KCC RCC
xlC_r xlC clang++])],
g++)
fi
fi
@@ -198,6 +201,7 @@ AS_IF([test "x$ac_cv_prog_cc_$1" != xno], [$5], [$6])
AC_DEFUN([_AC_C_C99_TEST_HEADER],
[[#include <stdarg.h>
#include <stdbool.h>
+#include <stddef.h>
#include <stdlib.h>
#include <wchar.h>
#include <stdio.h>
@@ -432,7 +436,9 @@ struct anonymous
[_AC_C_C99_TEST_BODY[
v1.i = 2;
v1.w.k = 5;
- _Static_assert (&v1.i == &v1.w.k, "Anonymous union alignment botch");
+ _Static_assert ((offsetof (struct anonymous, i)
+ == offsetof (struct anonymous, w.k)),
+ "Anonymous union alignment botch");
]],
dnl Try
dnl GCC -std=gnu11 (unused restrictive mode: -std=c11)
@@ -754,9 +760,9 @@ AC_DEFUN([_AC_CXX_CXX11_TEST_BODY],
}
{
// Unicode literals
- char *utf8 = u8"UTF-8 string \u2500";
- char16_t *utf16 = u"UTF-8 string \u2500";
- char32_t *utf32 = U"UTF-32 string \u2500";
+ char const *utf8 = u8"UTF-8 string \u2500";
+ char16_t const *utf16 = u"UTF-8 string \u2500";
+ char32_t const *utf32 = U"UTF-32 string \u2500";
}
]])
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