[libcxx-commits] [libcxx] [libc++][NFC] Remove _LIBCPP_FREESTANDING (PR #176907)

[via libcxx-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-libcxx

Author: Nikolas Klauser (philnik777)

<details>
<summary>Changes</summary>

`_LIBCPP_FREESTANDING` isn't used and is unlikely to be used in the future, since we expect different `__config_site`s for different targets. We will most likely never support `-ffreestanding`.


---
Full diff: https://github.com/llvm/llvm-project/pull/176907.diff


2 Files Affected:

- (modified) libcxx/include/__config (-4) 
- (removed) libcxx/test/libcxx/libcpp_freestanding.sh.cpp (-20) 


``````````diff
diff --git a/libcxx/include/__config b/libcxx/include/__config
index 2a4abfd469d9e..10805eec580d5 100644
--- a/libcxx/include/__config
+++ b/libcxx/include/__config
@@ -36,10 +36,6 @@
 #  define _LIBCPP_CONCAT(_X, _Y) _LIBCPP_CONCAT_IMPL(_X, _Y)
 #  define _LIBCPP_CONCAT3(X, Y, Z) _LIBCPP_CONCAT(X, _LIBCPP_CONCAT(Y, Z))
 
-#  if __STDC_HOSTED__ == 0
-#    define _LIBCPP_FREESTANDING
-#  endif
-
 #  define _LIBCPP_TOSTRING2(x) #x
 #  define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x)
 
diff --git a/libcxx/test/libcxx/libcpp_freestanding.sh.cpp b/libcxx/test/libcxx/libcpp_freestanding.sh.cpp
deleted file mode 100644
index 8dd7a8ac85211..0000000000000
--- a/libcxx/test/libcxx/libcpp_freestanding.sh.cpp
+++ /dev/null
@@ -1,20 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-// Test that _LIBCPP_FREESTANDING is not defined when -ffreestanding is not passed
-// to the compiler but defined when -ffreestanding is passed to the compiler.
-
-// RUN: %{cxx} %{flags} %{compile_flags} -fsyntax-only %s
-// RUN: %{cxx} %{flags} %{compile_flags} -fsyntax-only -ffreestanding -DFREESTANDING %s
-
-#include <__config>
-
-#if defined(FREESTANDING) != defined(_LIBCPP_FREESTANDING)
-#error _LIBCPP_FREESTANDING should be defined in freestanding mode and not \
-       defined in non-freestanding mode
-#endif

``````````

</details>


https://github.com/llvm/llvm-project/pull/176907