From ea0cede5aa04ac22837befe5a690756e06ae195c Mon Sep 17 00:00:00 2001
From: k0kubun <k0kubun@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 23 Jun 2018 07:21:12 +0000
Subject: [PATCH] mjit.c: initial cygwin support

thread_pthread.c: Drop pthread_attr_setscope usage. It seems that,
at least on Linux and macOS, PTHREAD_SCOPE_PROCESS is not supported
and thus PTHREAD_SCOPE_SYSTEM should be used by default.

Let's just stop calling this until we find some platform that needs
`pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM)`.

[Misc #14854]

From: fd0 (Daisuke Fujimura)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63730 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 mjit.c           | 6 ++++--
 thread_pthread.c | 1 -
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/mjit.c b/mjit.c
index 80ab299039..3dc34e8f45 100644
--- a/mjit.c
+++ b/mjit.c
@@ -610,7 +610,7 @@ static const char *const CC_DLDFLAGS_ARGS[] = {
     MJIT_DLDFLAGS
 #if defined __GNUC__ && !defined __clang__
     "-nostartfiles",
-# ifndef _WIN32
+# if !defined(_WIN32) && !defined(__CYGWIN__)
     "-nodefaultlibs", "-nostdlib",
 # endif
 #endif
@@ -618,10 +618,12 @@ static const char *const CC_DLDFLAGS_ARGS[] = {
 };
 
 static const char *const CC_LIBS[] = {
-#ifdef _WIN32
+#if defined(_WIN32) || defined(__CYGWIN__)
     MJIT_LIBS
 # if defined __GNUC__ && !defined __clang__
+#  if defined(_WIN32)
     "-lmsvcrt",
+#  endif
     "-lgcc",
 # endif
 #endif
diff --git a/thread_pthread.c b/thread_pthread.c
index 6433849686..1a1a6fc0c6 100644
--- a/thread_pthread.c
+++ b/thread_pthread.c
@@ -1757,7 +1757,6 @@ rb_thread_create_mjit_thread(void (*child_hook)(void), void (*worker_func)(void)
 
     /* jit_worker thread is not to be joined */
     if (pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED) == 0
-        && pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM) == 0
         && pthread_create(&worker_pid, &attr, mjit_worker, (void *)worker_func) == 0) {
         ret = TRUE;
     }