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diff -ru bdwgc.orig/os_dep.c bdwgc/os_dep.c
--- bdwgc.orig/os_dep.c 2017-01-13 01:05:27.201020300 +0100
+++ bdwgc/os_dep.c 2017-01-12 22:54:52.681020300 +0100
@@ -32,7 +32,7 @@
#endif
#if defined(UNIX_LIKE) || defined(CYGWIN32) || defined(NACL) \
- || defined(SYMBIAN)
+ || defined(SYMBIAN) || defined(MIDIPIX)
# include <fcntl.h>
#endif
--- bdwgc/include/private/gcconfig.h.orig 2018-11-14 15:26:02.756000000 +0000
+++ bdwgc/include/private/gcconfig.h 2018-11-14 16:42:13.244000000 +0000
@@ -108,6 +108,10 @@
# define LINUX
# endif
+# if defined(__midipix__)
+# define MIDIPIX
+# endif
+
/* And one for QNX: */
# if defined(__QNX__)
# define I386
@@ -362,6 +366,14 @@
# define X86_64
# define mach_type_known
# endif
+# if defined(MIDIPIX) && defined(__x86_64__)
+# define X86_64
+# define mach_type_known
+# endif
+# if defined(MIDIPIX) && defined(__i386__)
+# define I386
+# define mach_type_known
+# endif
# if defined(LINUX) && (defined(__ia64__) || defined(__ia64))
# define IA64
# define mach_type_known
@@ -1542,6 +1554,12 @@
EXTERN_C_BEGIN
# endif
# endif
+# ifdef MIDIPIX
+# define OS_TYPE "MIDIPIX"
+# define DATASTART (ptr_t)NULL /* Wrong */
+# define DATAEND (ptr_t)NULL /* Wrong */
+# define STACKBOTTOM (ptr_t)0x000000 /* Not sure if we should be using STACKBOTTOM or LINUX_STACKBOTTOM & /proc/self/stat */
+# endif
# ifdef CYGWIN32
# define OS_TYPE "CYGWIN32"
# define DATASTART ((ptr_t)GC_DATASTART) /* From gc.h */
@@ -2656,6 +2674,12 @@
EXTERN_C_BEGIN
# endif
# endif
+# ifdef MIDIPIX
+# define OS_TYPE "MIDIPIX"
+# define DATASTART (ptr_t)NULL /* Wrong */
+# define DATAEND (ptr_t)NULL /* Wrong */
+# define STACKBOTTOM (ptr_t)0x000000 /* Not sure if we should be using STACKBOTTOM or LINUX_STACKBOTTOM & /proc/self/stat */
+# endif
# ifdef DARWIN
# define OS_TYPE "DARWIN"
# define DARWIN_DONT_PARSE_STACK
@@ -3242,7 +3266,7 @@
# if defined(GC_IRIX_THREADS) && !defined(IRIX5)
# error Inconsistent configuration
# endif
-# if defined(GC_LINUX_THREADS) && !defined(LINUX) && !defined(NACL)
+# if defined(GC_LINUX_THREADS) && !defined(LINUX) && !defined(NACL) && !defined(MIDIPIX)
# error Inconsistent configuration
# endif
# if defined(GC_NETBSD_THREADS) && !defined(NETBSD)
--- bdwgc/pthread_stop_world.c.orig 2017-01-23 18:47:24.683963226 +0000
+++ bdwgc/pthread_stop_world.c 2017-01-23 18:59:56.449597256 +0000
@@ -20,6 +20,10 @@
#if defined(GC_PTHREADS) && !defined(GC_WIN32_THREADS) && \
!defined(GC_DARWIN_THREADS)
+#ifdef MIDIPIX
+# include <sys/select.h>
+#endif
+
#ifdef NACL
# include <unistd.h>
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