mkxp-z/subprojects/packagefiles/physfs-devkitppc.patch

# devkitPPC does not provide POSIX semaphores, which OpenAL Soft needs.
# However, devkitPPC provides an alternative semaphore implementation in an external library, libogc.
# This patch makes PhysFS use libogc semaphores if POSIX semaphores is not found.

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -172,11 +172,20 @@ if(PHYSFS_BUILD_STATIC)
 		set_target_properties(physfs-static PROPERTIES VS_WINRT_COMPONENT True)
         set_target_properties(physfs-static PROPERTIES STATIC_LIBRARY_FLAGS "/ignore:4264")
     endif()
+    set(CPP_DEFS)
+    set(INC_PATHS)
+    include(CheckSymbolExists)
+    check_symbol_exists(__DEVKITPPC__ "sys/config.h" DEVKITPPC)
+    if(DEVKITPPC)
+        set(CPP_DEFS ${CPP_DEFS} MKXPZ_DEVKITPPC)
+        set(INC_PATHS ${INC_PATHS} "$ENV{DEVKITPRO}/libogc/include")
+    endif()
     if(WIN32 OR WINRT OR OS2)
         # no dll exports from the static library
-        target_compile_definitions(physfs-static PRIVATE "PHYSFS_STATIC")
+        set(CPP_DEFS ${CPP_DEFS} "PHYSFS_STATIC")
     endif()
-    target_include_directories(physfs-static PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>")
+    target_compile_definitions(physfs-static PRIVATE ${CPP_DEFS})
+    target_include_directories(physfs-static PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>" ${INC_PATHS})
     target_link_libraries(physfs-static PRIVATE ${OPTIONAL_LIBRARY_LIBS} ${OTHER_LDFLAGS})
     set(PHYSFS_LIB_TARGET physfs-static)
     list(APPEND PHYSFS_INSTALL_TARGETS "physfs-static")
--- a/src/physfs_platform_posix.c
+++ b/src/physfs_platform_posix.c
@@ -19,7 +19,11 @@
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
-#include <pthread.h>
+#ifdef MKXPZ_DEVKITPPC
+#  include <ogc/mutex.h>
+#else
+#  include <pthread.h>
+#endif
 
 #include "physfs_internal.h"
 
@@ -369,15 +373,23 @@ int __PHYSFS_platformStat(const char *fname, PHYSFS_Stat *st, const int follow)
 
 typedef struct
 {
+#ifdef MKXPZ_DEVKITPPC
+    mutex_t mutex;
+#else
     pthread_mutex_t mutex;
     pthread_t owner;
+#endif
     PHYSFS_uint32 count;
 } PthreadMutex;
 
 
 void *__PHYSFS_platformGetThreadID(void)
 {
+#ifdef MKXPZ_DEVKITPPC
+    return (void *)42;
+#else
     return ( (void *) ((size_t) pthread_self()) );
+#endif
 } /* __PHYSFS_platformGetThreadID */
 
 
@@ -386,7 +398,11 @@ void *__PHYSFS_platformCreateMutex(void)
     int rc;
     PthreadMutex *m = (PthreadMutex *) allocator.Malloc(sizeof (PthreadMutex));
     BAIL_IF(!m, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
+#ifdef MKXPZ_DEVKITPPC
+    rc = LWP_MutexInit(&m->mutex, false);
+#else
     rc = pthread_mutex_init(&m->mutex, NULL);
+#endif
     if (rc != 0)
     {
         allocator.Free(m);
@@ -394,7 +410,9 @@ void *__PHYSFS_platformCreateMutex(void)
     } /* if */
 
     m->count = 0;
+#ifndef MKXPZ_DEVKITPPC
     m->owner = (pthread_t) 0xDEADBEEF;
+#endif
     return ((void *) m);
 } /* __PHYSFS_platformCreateMutex */
 
@@ -403,11 +421,15 @@ void __PHYSFS_platformDestroyMutex(void *mutex)
 {
     PthreadMutex *m = (PthreadMutex *) mutex;
 
+#ifdef MKXPZ_DEVKITPPC
+    LWP_MutexDestroy(m->mutex);
+#else
     /* Destroying a locked mutex is a bug, but we'll try to be helpful. */
     if ((m->owner == pthread_self()) && (m->count > 0))
         pthread_mutex_unlock(&m->mutex);
 
     pthread_mutex_destroy(&m->mutex);
+#endif
     allocator.Free(m);
 } /* __PHYSFS_platformDestroyMutex */
 
@@ -415,6 +437,10 @@ void __PHYSFS_platformDestroyMutex(void *mutex)
 int __PHYSFS_platformGrabMutex(void *mutex)
 {
     PthreadMutex *m = (PthreadMutex *) mutex;
+#ifdef MKXPZ_DEVKITPPC
+    if (LWP_MutexLock(m->mutex) != 0)
+        return 0;
+#else
     pthread_t tid = pthread_self();
     if (m->owner != tid)
     {
@@ -422,6 +448,7 @@ int __PHYSFS_platformGrabMutex(void *mutex)
             return 0;
         m->owner = tid;
     } /* if */
+#endif
 
     m->count++;
     return 1;
@@ -431,6 +458,9 @@ int __PHYSFS_platformGrabMutex(void *mutex)
 void __PHYSFS_platformReleaseMutex(void *mutex)
 {
     PthreadMutex *m = (PthreadMutex *) mutex;
+#ifdef MKXPZ_DEVKITPPC
+    LWP_MutexUnlock(m->mutex);
+#else
     assert(m->owner == pthread_self());  /* catch programming errors. */
     assert(m->count > 0);  /* catch programming errors. */
     if (m->owner == pthread_self())
@@ -441,6 +471,7 @@ void __PHYSFS_platformReleaseMutex(void *mutex)
             pthread_mutex_unlock(&m->mutex);
         } /* if */
     } /* if */
+#endif
 } /* __PHYSFS_platformReleaseMutex */
 
 #endif  /* PHYSFS_PLATFORM_POSIX */