Fix build problems on hurd-i386

Forwarded: partially
Last-Update: 2018-10-24

This patch allows Open MPI to build on Debian GNU/HURD.

Also, the memory:linux MCA component is disabled, since its use of POSIX API
in malloc hooks called very early at startup causes troubles.

Also changes by Samuel Thibault <sthibault@debian.org>
See bugs.debian.org/846965

Gbp-Pq: Name build_hurd

ompi/include/ompi_config.h

@@ -28,6 +28,10 @@
 
 #include "opal_config.h"
 
+#ifndef PATH_MAX /* Hurd */
+#define PATH_MAX 65535
+#endif
+
 #define OMPI_IDENT_STRING OPAL_IDENT_STRING
 
 /***********************************************************************

ompi/mca/fbtl/posix/fbtl_posix_preadv.c

@@ -32,6 +32,10 @@
 static ssize_t mca_fbtl_posix_preadv_datasieving (ompio_file_t *fh);
 static ssize_t mca_fbtl_posix_preadv_generic (ompio_file_t *fh);
 
+#ifndef IOV_MAX
+#define IOV_MAX 1024
+#endif
+
 ssize_t mca_fbtl_posix_preadv (ompio_file_t *fh )
 {
     ssize_t bytes_read=0, ret_code=0;

ompi/mca/fbtl/posix/fbtl_posix_pwritev.c

@@ -33,6 +33,10 @@
 static ssize_t mca_fbtl_posix_pwritev_datasieving (ompio_file_t *fh );
 static ssize_t mca_fbtl_posix_pwritev_generic (ompio_file_t *fh );
 
+#ifndef IOV_MAX
+#define IOV_MAX 1024
+#endif
+
 ssize_t  mca_fbtl_posix_pwritev(ompio_file_t *fh )
 {
     ssize_t bytes_written=0, ret_code=0;

opal/mca/base/mca_base_var.c

@@ -51,6 +51,14 @@
 #include "opal/util/opal_environ.h"
 #include "opal/runtime/opal.h"
 
+#ifndef MAXPATHLEN /* Hurd */
+#define MAXPATHLEN 65535
+#endif
+
+#ifndef PATH_MAX  /* Hurd */
+#define PATH_MAX 65535
+#endif
+
 /*
  * local variables
  */

opal/util/stacktrace.c

@@ -588,8 +588,12 @@ int opal_util_register_stackhandlers (void)
 
     /* Setup the signals to catch */
     memset(&act, 0, sizeof(act));
+#ifdef SA_SIGINFO
     act.sa_sigaction = show_stackframe;
     act.sa_flags = SA_SIGINFO;
+#else
+    act.sa_handler = show_stackframe_handler;
+#endif
 #ifdef SA_ONESHOT
     act.sa_flags |= SA_ONESHOT;
 #else

orte/include/orte_config.h

@@ -26,6 +26,13 @@
 
 #include "opal_config.h"
 
+#ifndef PATH_MAX /* Hurd */
+#define PATH_MAX 65535
+#endif
+#ifndef MAXPATHLEN
+#define MAXPATHLEN 65535
+#endif
+
 #define ORTE_IDENT_STRING OPAL_IDENT_STRING
 
 #  if OPAL_C_HAVE_VISIBILITY

orte/mca/odls/base/odls_base_default_fns.c

@@ -856,7 +856,11 @@ static int setup_path(orte_app_context_t *app, char **wdir)
          * again not match getcwd! This is beyond our control - we are only
          * ensuring they start out matching.
          */
+#if !defined(MAXPATHLEN) && defined(__GLIBC__)
+    basedir = get_current_dir_name();
+#else
         getcwd(dir, sizeof(dir));
+#endif	
         *wdir = strdup(dir);
         opal_setenv("PWD", dir, true, &app->env);
         /* update the initial wdir value too */
@@ -1065,7 +1069,11 @@ void orte_odls_base_default_launch_local(int fd, short sd, void *cbdata)
     orte_app_context_t *app;
     orte_proc_t *child=NULL;
     int rc=ORTE_SUCCESS;
-    char basedir[MAXPATHLEN];
+#if !defined(MAXPATHLEN) && defined(__GLIBC__)
+    char *basedir=NULL;
+#else
+  char basedir[MAXPATHLEN];
+#endif
     int j, idx;
     int total_num_local_procs = 0;
     orte_odls_launch_local_t *caddy = (orte_odls_launch_local_t*)cbdata;
@@ -2061,7 +2069,11 @@ int orte_odls_base_default_restart_proc(orte_proc_t *child,
      * bouncing around as we execute this app, but we will always return
      * to this place as our default directory
      */
+#if !defined(MAXPATHLEN) && defined(__GLIBC__)
+    basedir = get_current_dir_name();
+#else
     getcwd(basedir, sizeof(basedir));
+#endif
 
     /* find this child's jobdat */
     if (NULL == (jobdat = orte_get_job_data_object(child->name.jobid))) {