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https://github.com/SerenityOS/serenity
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fa1eef8bbe
Apart from bumping the toolchain Clang's and port's version, this commit completely overhauls the way LLVM toolchain is built. First, it gets rid of a complicated two-stage process of first compiling clang and compiler-rt builtins and then building libunwind, libc++abi, and libc++ -- it is possible to create a complete cross-compilation toolchain in a single CMake invocation with a modern LLVM. Moreover, the old method was inherently unsupported and subtly broken. Next, it utilizes full potential of the Stubs "framework". Now we are even able to compile Clang with -Wl,-z,defs which makes one of the patches obsolete and the whole installation less error-prone. Note that it comes at a cost of complicating the bootstrap process on a completely novel architecture but this hopefully won't happen often. Lastly, it fixes handling of the -no*lib* family of flags in the Serenity LLVM driver and correctly uses -nostartfiles in conjunction with stubs to make necessary CMake configure-time checks succeed.
133 lines
5.5 KiB
Diff
133 lines
5.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Daniel Bertalan <dani@danielbertalan.dev>
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Date: Thu, 14 Apr 2022 10:17:13 +0200
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Subject: [PATCH] [libcxx] Add support for SerenityOS
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This commit teaches libc++ about what features are available in our
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LibC, namely:
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* We do not have locale support, so no-op shims should be used in place
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of the C locale API.
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* The number of errno constants defined by us is given by the value of
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the `ELAST` macro.
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* Multithreading is implemented though the pthread library.
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* Use libc++'s builtin character type table instead of the one provided
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by LibC as there's a lot of extra porting work to convince the rest of
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locale.cpp to use our character type table properly.
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---
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libcxx/include/CMakeLists.txt | 1 +
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libcxx/include/__config | 5 +++--
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libcxx/include/__locale | 2 ++
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libcxx/include/__support/serenity/xlocale.h | 24 +++++++++++++++++++++
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libcxx/include/locale | 2 +-
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libcxx/src/include/config_elast.h | 2 ++
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6 files changed, 33 insertions(+), 3 deletions(-)
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create mode 100644 libcxx/include/__support/serenity/xlocale.h
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diff --git a/libcxx/include/CMakeLists.txt b/libcxx/include/CMakeLists.txt
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index ed721d467e94..5641e32b1343 100644
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--- a/libcxx/include/CMakeLists.txt
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+++ b/libcxx/include/CMakeLists.txt
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@@ -675,6 +675,7 @@ set(files
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__support/musl/xlocale.h
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__support/newlib/xlocale.h
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__support/openbsd/xlocale.h
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+ __support/serenity/xlocale.h
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__support/win32/locale_win32.h
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__support/xlocale/__nop_locale_mgmt.h
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__support/xlocale/__posix_l_fallback.h
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diff --git a/libcxx/include/__config b/libcxx/include/__config
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index 8b2eaf69d170..53a09f46eaf7 100644
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--- a/libcxx/include/__config
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+++ b/libcxx/include/__config
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@@ -1103,7 +1103,8 @@ __sanitizer_verify_double_ended_contiguous_container(const void*, const void*, c
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defined(__APPLE__) || \
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defined(__MVS__) || \
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defined(_AIX) || \
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- defined(__EMSCRIPTEN__)
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+ defined(__EMSCRIPTEN__) || \
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+ defined(__serenity__)
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// clang-format on
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# define _LIBCPP_HAS_THREAD_API_PTHREAD
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# elif defined(__Fuchsia__)
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@@ -1176,7 +1177,7 @@ __sanitizer_verify_double_ended_contiguous_container(const void*, const void*, c
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# endif
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# if defined(__BIONIC__) || defined(__NuttX__) || defined(__Fuchsia__) || defined(__wasi__) || \
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- defined(_LIBCPP_HAS_MUSL_LIBC) || defined(__OpenBSD__)
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+ defined(_LIBCPP_HAS_MUSL_LIBC) || defined(__OpenBSD__) || defined(__serenity__)
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# define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE
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# endif
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diff --git a/libcxx/include/__locale b/libcxx/include/__locale
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index 3ba7ac18b0b3..9a68dade7fef 100644
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--- a/libcxx/include/__locale
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+++ b/libcxx/include/__locale
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@@ -51,6 +51,8 @@
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# include <__support/musl/xlocale.h>
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#elif defined(_LIBCPP_HAS_MUSL_LIBC)
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# include <__support/musl/xlocale.h>
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+#elif defined(__serenity__)
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+# include <__support/serenity/xlocale.h>
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#endif
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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diff --git a/libcxx/include/__support/serenity/xlocale.h b/libcxx/include/__support/serenity/xlocale.h
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new file mode 100644
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index 000000000000..67c85bf641e2
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--- /dev/null
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+++ b/libcxx/include/__support/serenity/xlocale.h
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@@ -0,0 +1,24 @@
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+//===----------------------------------------------------------------------===//
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+//
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+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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+// See https://llvm.org/LICENSE.txt for license information.
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+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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+//
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+//===----------------------------------------------------------------------===//
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+
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+#ifndef _LIBCPP_SUPPORT_SERENITY_XLOCALE_H
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+#define _LIBCPP_SUPPORT_SERENITY_XLOCALE_H
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+
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+#if defined(__serenity__)
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+
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+# include <__support/xlocale/__nop_locale_mgmt.h>
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+# include <__support/xlocale/__posix_l_fallback.h>
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+# include <__support/xlocale/__strtonum_fallback.h>
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+# include <clocale>
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+# include <cstdlib>
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+# include <ctype.h>
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+# include <cwctype>
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+
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+#endif // __serenity__
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+
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+#endif
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diff --git a/libcxx/include/locale b/libcxx/include/locale
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index 9e97eb9f3395..4bcdc13c1967 100644
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--- a/libcxx/include/locale
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+++ b/libcxx/include/locale
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@@ -217,7 +217,7 @@ template <class charT> class messages_byname;
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#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
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// Most unix variants have catopen. These are the specific ones that don't.
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-# if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) && !defined(__EMSCRIPTEN__)
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+# if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) && !defined(__EMSCRIPTEN__) && !defined(__serenity__)
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# define _LIBCPP_HAS_CATOPEN 1
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# include <nl_types.h>
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# endif
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diff --git a/libcxx/src/include/config_elast.h b/libcxx/src/include/config_elast.h
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index 899e124ad261..11d930bc8a3c 100644
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--- a/libcxx/src/include/config_elast.h
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+++ b/libcxx/src/include/config_elast.h
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@@ -35,6 +35,8 @@
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# define _LIBCPP_ELAST 4095
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#elif defined(__APPLE__)
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// No _LIBCPP_ELAST needed on Apple
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+#elif defined(__serenity__)
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+// No _LIBCPP_ELAST needed on SerenityOS
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#elif defined(__MVS__)
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# define _LIBCPP_ELAST 1160
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#elif defined(_LIBCPP_MSVCRT_LIKE)
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--
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2.44.0
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