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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Daniel Bertalan <dani@danielbertalan.dev>
Date: Thu, 14 Apr 2022 09:54:22 +0200
Subject: [PATCH] [Support] Add support for building LLVM on SerenityOS
Adds SerenityOS `#ifdef`s for platform-specific code.
We stub out wait4, as SerenityOS doesn't support querying a child
process's resource usage information.
---
llvm/include/llvm/Support/SwapByteOrder.h | 2 +-
llvm/lib/Support/Unix/Path.inc | 5 ++++-
llvm/lib/Support/Unix/Program.inc | 9 ++++++++-
3 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/llvm/include/llvm/Support/SwapByteOrder.h b/llvm/include/llvm/Support/SwapByteOrder.h
index e8612ba6654b5d950b2eb570c23ebbb79d4dc035..f0109f4b30e83cefc745e0575deaf89b1e51c35a 100644
--- a/llvm/include/llvm/Support/SwapByteOrder.h
+++ b/llvm/include/llvm/Support/SwapByteOrder.h
@@ -22,7 +22,7 @@
#endif
#if defined(__linux__) || defined(__GNU__) || defined(__HAIKU__) || \
- defined(__Fuchsia__) || defined(__EMSCRIPTEN__)
+ defined(__Fuchsia__) || defined(__EMSCRIPTEN__) || defined(__serenity__)
#include <endian.h>
#elif defined(_AIX)
#include <sys/machine.h>
diff --git a/llvm/lib/Support/Unix/Path.inc b/llvm/lib/Support/Unix/Path.inc
index 2ae7c6dc47e071a7801c346a6d40e0db45e49beb..bf173117bb9be72902597569dc94ff81efe5af38 100644
--- a/llvm/lib/Support/Unix/Path.inc
+++ b/llvm/lib/Support/Unix/Path.inc
@@ -112,7 +112,7 @@ typedef uint_t uint;
#endif
#if defined(__NetBSD__) || defined(__DragonFly__) || defined(__GNU__) || \
- defined(__MVS__)
+ defined(__MVS__) || defined(__serenity__)
#define STATVFS_F_FLAG(vfs) (vfs).f_flag
#else
#define STATVFS_F_FLAG(vfs) (vfs).f_flags
@@ -512,6 +512,9 @@ static bool is_local_impl(struct STATVFS &Vfs) {
#elif defined(__HAIKU__)
// Haiku doesn't expose this information.
return false;
+#elif defined(__serenity__)
+ // Serenity doesn't yet support remote filesystem mounts.
+ return false;
#elif defined(__sun)
// statvfs::f_basetype contains a null-terminated FSType name of the mounted target
StringRef fstype(Vfs.f_basetype);
diff --git a/llvm/lib/Support/Unix/Program.inc b/llvm/lib/Support/Unix/Program.inc
index 089342030b97e178d749a54b2d43ae5338b5b097..3ffe064e5f0de06ac76c34b218e44fe7a8d9eaf6 100644
--- a/llvm/lib/Support/Unix/Program.inc
+++ b/llvm/lib/Support/Unix/Program.inc
@@ -336,7 +336,7 @@ static bool Execute(ProcessInfo &PI, StringRef Program,
namespace llvm {
namespace sys {
-#ifndef _AIX
+#if !defined(_AIX) && !defined(__serenity__)
using ::wait4;
#else
static pid_t (wait4)(pid_t pid, int *status, int options, struct rusage *usage);
@@ -379,6 +379,13 @@ pid_t (llvm::sys::wait4)(pid_t pid, int *status, int options,
}
#endif
+#ifdef __serenity__
+pid_t (llvm::sys::wait4)(pid_t pid, int *status, int options,
+ struct rusage*) {
+ return ::waitpid(pid, status, options);
+}
+#endif
+
ProcessInfo llvm::sys::Wait(const ProcessInfo &PI, unsigned SecondsToWait,
bool WaitUntilTerminates, std::string *ErrMsg,
Optional<ProcessStatistics> *ProcStat) {
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