gnu: base: Add glibc-hurd and hurd-minimal.

* gnu/packages/base.scm (glibc/hurd, glibc/hurd-headers): New variables.
* gnu/packages/hurd.scm (hurd-minimal): New variable.
* gnu/packages/patches/glibc-hurd-extern-inline.patch: New file.
* gnu/packages/patches/libpthread-glibc-preparation.patch: New file.
* gnu-system.am (dist_patch_DATA): Add them.

Co-authored-by: Ludovic Courtès <ludo@gnu.org>
Co-authored-by: Mark H Weaver <mhw@netris.org>

2 files changed, 181 insertions, 0 deletions

diff --git a/gnu/packages/patches/glibc-hurd-extern-inline.patch b/gnu/packages/patches/glibc-hurd-extern-inline.patch
new file mode 100644
index 0000000000..a609b1f54a
--- /dev/null
+++ b/gnu/packages/patches/glibc-hurd-extern-inline.patch
@@ -0,0 +1,35 @@
+This changes the way _EXTERN_INLINE is defined so we can
+avoid external definition errors.
+https://lists.gnu.org/archive/html/bug-hurd/2014-04/msg00002.html
+
+diff --git a/signal/sigsetops.c b/signal/sigsetops.c
+index 0317662..b92c296 100644
+--- a/signal/sigsetops.c
++++ b/signal/sigsetops.c
+@@ -3,7 +3,9 @@
+ 
+ #include <features.h>
+ 
+-#define _EXTERN_INLINE
++#ifndef _EXTERN_INLINE
++#define _EXTERN_INLINE __extern_inline
++#endif
+ #ifndef __USE_EXTERN_INLINES
+ # define __USE_EXTERN_INLINES  1
+ #endif
+
+Link libmachuser and libhurduser automatically with libc, since they are
+considered a standard part of the API in GNU-land.
+
+--- a/Makerules
++++ b/Makerules
+@@ -978,6 +978,9 @@
+ 	      '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
+	      ' AS_NEEDED (' $(rtlddir)/$(rtld-installed-name) ') )' \
+ 	) > $@.new
++ifeq ($(patsubst gnu%,,$(config-os)),)
++	echo 'INPUT ( AS_NEEDED ( -lmachuser -lhurduser ) )' >> $@.new
++endif
+ 	mv -f $@.new $@
+ 
+ endif
\ No newline at end of file
diff --git a/gnu/packages/patches/libpthread-glibc-preparation.patch b/gnu/packages/patches/libpthread-glibc-preparation.patch
new file mode 100644
index 0000000000..a43245436c
--- /dev/null
+++ b/gnu/packages/patches/libpthread-glibc-preparation.patch
@@ -0,0 +1,146 @@
+This patch helps to integrate the Hurd's libpthread as a libc add-on.
+
+It writes the configure file, removes an rpc call not yet 
+implemented on the version of gnumach we use and defines
+a missing macro.
+
+diff --git a/libpthread/configure b/libpthread/configure
+new file mode 100644
+index 0000000..2cdbc71
+--- /dev/null
++++ b/libpthread/configure
+@@ -0,0 +1,2 @@
++libc_add_on_canonical=libpthread
++libc_add_on_subdirs=.
+-- 
+1.9.0
+
+We are using a version of GNU Mach that lacks 'thread_terminate_release'
+(not introduced yet).  The 'thread_terminate' RPC call will be enough for
+our needs.
+See <http://lists.gnu.org/archive/html/bug-hurd/2014-05/msg00127.html>.
+
+diff --git a/libpthread/sysdeps/mach/pt-thread-terminate.c b/libpthread/sysdeps/mach/pt-thread-terminate.c
+index 6672065..129a611 100644
+--- a/libpthread/sysdeps/mach/pt-thread-terminate.c
++++ b/libpthread/sysdeps/mach/pt-thread-terminate.c
+@@ -70,9 +70,9 @@ __pthread_thread_terminate (struct __pthread *thread)
+   __mach_port_destroy (__mach_task_self (), wakeup_port);
+ 
+   /* Terminate and release all that's left.  */
+-  err = __thread_terminate_release (kernel_thread, mach_task_self (),
+-				    kernel_thread, reply_port,
+-				    stackaddr, stacksize);
++  /* err = __thread_terminate_release (kernel_thread, mach_task_self (), */
++  /* 				    kernel_thread, reply_port, */
++  /* 				    stackaddr, stacksize); */
+ 
+   /* The kernel does not support it yet.  Leak but at least terminate
+      correctly.  */
+-- 
+1.9.2
+
+The __PTHREAD_SPIN_LOCK_INITIALIZER definition is missing, so we 
+define it to __SPIN_LOCK_INITIALIZER which already exists.
+See <http://lists.gnu.org/archive/html/commit-hurd/2009-04/msg00006.html>.
+  
+diff --git a/libpthread/sysdeps/mach/bits/spin-lock.h b/libpthread/sysdeps/mach/bits/spin-lock.h
+index 537dac9..fca0e5a 100644
+--- a/libpthread/sysdeps/mach/bits/spin-lock.h
++++ b/libpthread/sysdeps/mach/bits/spin-lock.h
+@@ -30,7 +30,7 @@ typedef __spin_lock_t __pthread_spinlock_t;
+ 
+ /* Initializer for a spin lock object.  */
+ #ifndef __PTHREAD_SPIN_LOCK_INITIALIZER
+-#error __PTHREAD_SPIN_LOCK_INITIALIZER undefined: should be defined by <lock-intern.h>.
++#define __PTHREAD_SPIN_LOCK_INITIALIZER __SPIN_LOCK_INITIALIZER
+ #endif
+ 
+ __END_DECLS
+
+The version of the glibc we use doesn't include the shm-directory.c file and does
+not yet support IS_IN.
+See <https://lists.gnu.org/archive/html/bug-hurd/2015-03/msg00078.html>
+
+diff --git a/libpthread/Makefile b/libpthread/Makefile
+index 2906788..b8dee58 100644
+--- a/libpthread/Makefile
++++ b/libpthread/Makefile
+@@ -149,8 +149,6 @@ libpthread-routines := pt-attr pt-attr-destroy pt-attr-getdetachstate	    \
+ 	sem-post sem-timedwait sem-trywait sem-unlink			    \
+ 	sem-wait							    \
+ 									    \
+-	shm-directory							    \
+-									    \
+ 	cthreads-compat							    \
+ 	$(SYSDEPS)
+ 
+-- 
+2.3.6
+
+diff --git a/libpthread/pthread/pt-create.c b/libpthread/pthread/pt-create.c
+index d88afae..84044dc 100644
+--- a/libpthread/pthread/pt-create.c
++++ b/libpthread/pthread/pt-create.c
+@@ -28,7 +28,7 @@
+ 
+ #include <pt-internal.h>
+ 
+-#if IS_IN (libpthread)
++#ifdef IS_IN_libpthread
+ # include <ctype.h>
+ #endif
+ #ifdef HAVE_USELOCALE
+@@ -50,7 +50,7 @@ entry_point (struct __pthread *self, void *(*start_routine)(void *), void *arg)
+   __resp = &self->res_state;
+ #endif
+ 
+-#if IS_IN (libpthread)
++#ifdef IS_IN_libpthread
+   /* Initialize pointers to locale data.  */
+   __ctype_init ();
+ #endif
+diff --git a/libpthread/pthread/pt-initialize.c b/libpthread/pthread/pt-initialize.c
+index 9e5404b..b9cacbd 100644
+--- a/libpthread/pthread/pt-initialize.c
++++ b/libpthread/pthread/pt-initialize.c
+@@ -28,7 +28,7 @@
+ 
+ DEFINE_HOOK (__pthread_init, (void));
+ 
+-#if IS_IN (libpthread)
++#ifdef IS_IN_libpthread
+ static const struct pthread_functions pthread_functions =
+   {
+     .ptr_pthread_attr_destroy = __pthread_attr_destroy,
+@@ -81,7 +81,7 @@ static const struct pthread_functions pthread_functions =
+ void
+ ___pthread_init (void)
+ {
+-#if IS_IN (libpthread)
++#ifdef IS_IN_libpthread
+   __libc_pthread_init(&pthread_functions);
+ #endif
+   RUN_HOOK (__pthread_init, ());
+diff --git a/libpthread/pthread/pt-internal.h b/libpthread/pthread/pt-internal.h
+index 18b5b4c..8cdcfce 100644
+--- a/libpthread/pthread/pt-internal.h
++++ b/libpthread/pthread/pt-internal.h
+@@ -35,7 +35,7 @@
+ #include <pt-sysdep.h>
+ #include <pt-machdep.h>
+ 
+-#if IS_IN (libpthread)
++#ifdef IS_IN_libpthread
+ # include <ldsodefs.h>
+ #endif
+ 
+@@ -60,7 +60,7 @@ enum pthread_state
+ # define PTHREAD_SYSDEP_MEMBERS
+ #endif
+ 
+-#if !(IS_IN (libpthread))
++#ifndef IS_IN_libpthread
+ #ifdef ENABLE_TLS
+ /* Type of the TCB.  */
+ typedef struct