Cross compiling for hppa
Hi,
In the process of improving the state of cross compiling, I also tried
to build and install a hppa cross compiler. Unfortunately, installing
libc6-dev:hppa fails:
https://jenkins.debian.net/job/rebootstrap_hppa_gcc49/124/console:
| Selecting previously unselected package libc6-dev:hppa.
| (Reading database ... 32091 files and directories currently installed.)
| Preparing to unpack libc6-dev_2.19-18_hppa.deb ...
| Unpacking libc6-dev:hppa (2.19-18) ...
| dpkg: error processing archive libc6-dev_2.19-18_hppa.deb (--install):
| trying to overwrite shared '/usr/include/pthread.h', which is different from other instances of package libc6-dev:hppa
| dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
| Errors were encountered while processing:
| libc6-dev_2.19-18_hppa.deb
In this case the native architecture is amd64. I am attaching a diff
between hppa's pthread.h and amd64's. It seems that this problem is
known for a while: (u)
https://sourceware.org/ml/libc-ports/2013-09/msg00016.html
The issue is clearly specific to hppa. I haven't seen any other
architecture exposing this. Is it worth fixing? Is anyone interested in
readily available cross compilers for hppa?
Please Cc me in replies as I am not subscribed to the list.
Helmut
--- hppa/usr/include/pthread.h 2015-05-10 16:29:12.000000000 +0200
+++ amd64/usr/include/pthread.h 2015-04-15 01:54:28.000000000 +0200
@@ -83,27 +83,39 @@
/* Mutex initializers. */
+#if __PTHREAD_MUTEX_HAVE_ELISION == 1 /* 64bit layout. */
+#define __PTHREAD_SPINS 0, 0
+#elif __PTHREAD_MUTEX_HAVE_ELISION == 2 /* 32bit layout. */
+#define __PTHREAD_SPINS { 0, 0 }
+#else
+#define __PTHREAD_SPINS 0
+#endif
+
#ifdef __PTHREAD_MUTEX_HAVE_PREV
# define PTHREAD_MUTEX_INITIALIZER \
- { { 0, 0, 0, 0, 0, 0, { 0, 0 } } }
+ { { 0, 0, 0, 0, 0, __PTHREAD_SPINS, { 0, 0 } } }
# ifdef __USE_GNU
# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
- { { 0, 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, 0, { 0, 0 } } }
+ { { 0, 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, __PTHREAD_SPINS, { 0, 0 } } }
# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
- { { 0, 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, 0, { 0, 0 } } }
+ { { 0, 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, __PTHREAD_SPINS, { 0, 0 } } }
# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \
- { { 0, 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, 0, { 0, 0 } } }
+ { { 0, 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, __PTHREAD_SPINS, { 0, 0 } } }
+# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \
+ { { 0, 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, __PTHREAD_SPINS, { 0, 0 } } }
+
# endif
#else
# define PTHREAD_MUTEX_INITIALIZER \
- { { 0, 0, 0, 0, 0, { 0 } } }
+ { { 0, 0, 0, 0, 0, { __PTHREAD_SPINS } } }
# ifdef __USE_GNU
# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
- { { 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, 0, { 0 } } }
+ { { 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, 0, { __PTHREAD_SPINS } } }
# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
- { { 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, 0, { 0 } } }
+ { { 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, 0, { __PTHREAD_SPINS } } }
# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \
- { { 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, 0, { 0 } } }
+ { { 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, 0, { __PTHREAD_SPINS } } }
+
# endif
#endif
@@ -404,6 +416,14 @@
cpu_set_t *__cpuset)
__THROW __nonnull ((1, 3));
+/* Get the default attributes used by pthread_create in this process. */
+extern int pthread_getattr_default_np (pthread_attr_t *__attr)
+ __THROW __nonnull ((1));
+
+/* Set the default attributes to be used by pthread_create in this
+ process. */
+extern int pthread_setattr_default_np (const pthread_attr_t *__attr)
+ __THROW __nonnull ((1));
/* Initialize thread attribute *ATTR with attributes corresponding to the
already running thread TH. It shall be called on uninitialized ATTR
@@ -1150,43 +1170,3 @@
__END_DECLS
#endif /* pthread.h */
-
-#ifndef _PTHREAD_H_HPPA_
-#define _PTHREAD_H_HPPA_ 1
-
-/* The pthread_cond_t initializer is compatible only with NPTL. We do not
- want to be forwards compatible, we eventually want to drop the code
- that has to clear the old LT initializer. */
-#undef PTHREAD_COND_INITIALIZER
-#define PTHREAD_COND_INITIALIZER { { 0, 0, 0, (void *) 0, 0, 0, 0, 0, 0 } }
-
-/* The pthread_mutex_t and pthread_rwlock_t initializers are compatible
- only with NPTL. NPTL assumes pthread_rwlock_t is all zero. */
-#undef PTHREAD_MUTEX_INITIALIZER
-#undef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
-#undef PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP
-#undef PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
-/* Mutex initializers. */
-#define PTHREAD_MUTEX_INITIALIZER \
- { { 0, 0, 0, 0, { 0, 0, 0, 0 }, 0, { 0 }, 0, 0 } }
-#ifdef __USE_GNU
-# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
- { { 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, { 0, 0, 0, 0 }, 0, { 0 }, 0, 0 } }
-# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
- { { 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, { 0, 0, 0, 0 }, 0, { 0 }, 0, 0 } }
-# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \
- { { 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, { 0, 0, 0, 0 }, 0, { 0 }, 0, 0 } }
-#endif
-
-#undef PTHREAD_RWLOCK_INITIALIZER
-#undef PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP
-/* Read-write lock initializers. */
-#define PTHREAD_RWLOCK_INITIALIZER \
- { { { 0, 0, 0, 0 }, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }
-#ifdef __USE_GNU
-# define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \
- { { { 0, 0, 0, 0 }, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,\
- 0, 0, 0 } }
-#endif /* Unix98 or XOpen2K */
-
-#endif
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