I wrote:
> The fix below makes this work with GCC and clang; other compilers are not
> relevant
> for this mode of building GNU clisp.
>
> The empirically determined replacement for HAVE_C_STATIC_ASSERT is:
> static_assert is built-in
> - C++
> g++ if __cplusplus >= 201103L && __GNUG__ >= 6
> clang++ if __cplusplus >= 201703L
> - C
> gcc: if __STDC_VERSION__ >= 202000L && __GNUC__ >= 13
> clang: if __STDC_VERSION__ >= 202000L && __clang_major__ >= 16
The fix works on some platforms, like glibc or Haiku 2024, but is still not
working on Haiku as of 2022. This additional patch fixes it there as well.
2024-10-31 Bruno Haible <br...@clisp.org>
assert-h: Allow mixed use of gcc/g++ also on Haiku 2022.
* m4/assert_h.m4 (gl_ASSERT_H): Don't assume that in C mode, <assert.h>
defines static_assert.
diff --git a/m4/assert_h.m4 b/m4/assert_h.m4
index 8f772f0a63..02f24db535 100644
--- a/m4/assert_h.m4
+++ b/m4/assert_h.m4
@@ -1,5 +1,5 @@
# assert_h.m4
-# serial 3
+# serial 4
dnl Copyright (C) 2011-2024 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -80,8 +80,9 @@ AC_DEFUN([gl_ASSERT_H]
#undef/**/__ASSERT_H__
#endif
/* Solaris 11.4 <assert.h> defines static_assert as a macro with 2 arguments.
- We need it also to be invocable with a single argument. */
- #if defined __sun && (__STDC_VERSION__ - 0 >= 201112L) && !defined __cplusplus
+ We need it also to be invocable with a single argument.
+ Haiku 2022 <assert.h> does not define static_assert at all. */
+ #if (__STDC_VERSION__ - 0 >= 201112L) && !defined __cplusplus
#undef/**/static_assert
#define static_assert _Static_assert
#endif
