From 98d32aec91ed6cdc9a9ab61562d22f030f53d2bd Mon Sep 17 00:00:00 2001
From: Johannes Schindelin <johannes.schindelin@gmx.de>
Date: Sun, 20 Oct 2019 22:08:58 +0200
Subject: [PATCH] win32/pthread: avoid name clashes with winpthread

The mingw-w64 GCC seems to link implicitly to libwinpthread, which does
implement a pthread emulation (that is more complete than Git's). Let's
keep preferring Git's.

To avoid linker errors where it thinks that the `pthread_self` and the
`pthread_create` symbols are defined twice, let's give our version a
`win32_` prefix, just like we already do for `pthread_join()`.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
 compat/win32/pthread.c | 4 ++--
 compat/win32/pthread.h | 8 +++++---
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/compat/win32/pthread.c b/compat/win32/pthread.c
index 2e7eead42c..9934c7ac6f 100644
--- a/compat/win32/pthread.c
+++ b/compat/win32/pthread.c
@@ -21,7 +21,7 @@ static unsigned __stdcall win32_start_routine(void *arg)
 	return 0;
 }
 
-int pthread_create(pthread_t *thread, const void *unused,
+int win32_pthread_create(pthread_t *thread, const void *unused,
 		   void *(*start_routine)(void*), void *arg)
 {
 	thread->arg = arg;
@@ -50,7 +50,7 @@ int win32_pthread_join(pthread_t *thread, void **value_ptr)
 	}
 }
 
-pthread_t pthread_self(void)
+pthread_t win32_pthread_self(void)
 {
 	pthread_t t = { NULL };
 	t.tid = GetCurrentThreadId();
diff --git a/compat/win32/pthread.h b/compat/win32/pthread.h
index 737983d00b..4e57147da2 100644
--- a/compat/win32/pthread.h
+++ b/compat/win32/pthread.h
@@ -50,8 +50,9 @@ typedef struct {
 	DWORD tid;
 } pthread_t;
 
-int pthread_create(pthread_t *thread, const void *unused,
-		   void *(*start_routine)(void*), void *arg);
+int win32_pthread_create(pthread_t *thread, const void *unused,
+			 void *(*start_routine)(void*), void *arg);
+#define pthread_create win32_pthread_create
 
 /*
  * To avoid the need of copying a struct, we use small macro wrapper to pass
@@ -62,7 +63,8 @@ int pthread_create(pthread_t *thread, const void *unused,
 int win32_pthread_join(pthread_t *thread, void **value_ptr);
 
 #define pthread_equal(t1, t2) ((t1).tid == (t2).tid)
-pthread_t pthread_self(void);
+pthread_t win32_pthread_self(void);
+#define pthread_self win32_pthread_self
 
 static inline void NORETURN pthread_exit(void *ret)
 {