Merging upstream version 1.19.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

49 files changed, 11929 insertions, 72 deletions

diff --git a/libnetdata/Makefile.am b/libnetdata/Makefile.am
index 7dc808fab..d239d4b01 100644
--- a/libnetdata/Makefile.am
+++ b/libnetdata/Makefile.am
@@ -27,5 +27,5 @@ SUBDIRS = \
     $(NULL)
 
 dist_noinst_DATA = \
-	README.md \
-	$(NULL)
+    README.md \
+    $(NULL)
diff --git a/libnetdata/Makefile.in b/libnetdata/Makefile.in
new file mode 100644
index 000000000..ce61281b9
--- /dev/null
+++ b/libnetdata/Makefile.in
@@ -0,0 +1,722 @@
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+	      install; \
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
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diff --git a/libnetdata/config/Makefile.am b/libnetdata/config/Makefile.am
index 1cb69ed99..161784b8f 100644
--- a/libnetdata/config/Makefile.am
+++ b/libnetdata/config/Makefile.am
@@ -3,7 +3,6 @@
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-
 dist_noinst_DATA = \
-	README.md \
-	$(NULL)
+    README.md \
+    $(NULL)
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new file mode 100644
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--- /dev/null
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+.NOEXPORT:
diff --git a/libnetdata/eval/eval.c b/libnetdata/eval/eval.c
index 0316edac0..f8af801f5 100644
--- a/libnetdata/eval/eval.c
+++ b/libnetdata/eval/eval.c
@@ -176,7 +176,7 @@ static inline calculated_number eval_variable(EVAL_EXPRESSION *exp, EVAL_VARIABL
 
     *error = EVAL_ERROR_UNKNOWN_VARIABLE;
     buffer_sprintf(exp->error_msg, "[ undefined variable '%s' ] ", v->name);
-    return 0;
+    return NAN;
 }
 
 static inline calculated_number eval_value(EVAL_EXPRESSION *exp, EVAL_VALUE *v, int *error) {
diff --git a/libnetdata/health/Makefile.am b/libnetdata/health/Makefile.am
index 9b7995f17..643458b74 100644
--- a/libnetdata/health/Makefile.am
+++ b/libnetdata/health/Makefile.am
@@ -3,6 +3,5 @@
 AUTOMAKE_OPTIONS = subdir-objects
 MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
 
-
 dist_noinst_DATA = \
-	$(NULL)
+    $(NULL)
diff --git a/libnetdata/health/Makefile.in b/libnetdata/health/Makefile.in
new file mode 100644
index 000000000..d5c51c106
--- /dev/null
+++ b/libnetdata/health/Makefile.in
@@ -0,0 +1,518 @@
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+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+dist_noinst_DATA = \
+    $(NULL)
+
+all: all-am
+
+.SUFFIXES:
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
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+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu libnetdata/health/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu libnetdata/health/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
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+	  *config.status*) \
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+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
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+	  else \
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+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
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+
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+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libnetdata/json/Makefile.am b/libnetdata/json/Makefile.am
index 1cb69ed99..161784b8f 100644
--- a/libnetdata/json/Makefile.am
+++ b/libnetdata/json/Makefile.am
@@ -3,7 +3,6 @@
 AUTOMAKE_OPTIONS = subdir-objects
 MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
 
-
 dist_noinst_DATA = \
-	README.md \
-	$(NULL)
+    README.md \
+    $(NULL)
diff --git a/libnetdata/json/Makefile.in b/libnetdata/json/Makefile.in
new file mode 100644
index 000000000..8c0d135f4
--- /dev/null
+++ b/libnetdata/json/Makefile.in
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diff --git a/libnetdata/libnetdata.h b/libnetdata/libnetdata.h
index ef883300b..023ad2c2b 100644
--- a/libnetdata/libnetdata.h
+++ b/libnetdata/libnetdata.h
@@ -65,6 +65,7 @@
 #include <getopt.h>
 #include <grp.h>
 #include <pwd.h>
+#include <limits.h>
 #include <locale.h>
 #include <net/if.h>
 #include <poll.h>
diff --git a/libnetdata/locks/Makefile.am b/libnetdata/locks/Makefile.am
index 1cb69ed99..161784b8f 100644
--- a/libnetdata/locks/Makefile.am
+++ b/libnetdata/locks/Makefile.am
@@ -3,7 +3,6 @@
 AUTOMAKE_OPTIONS = subdir-objects
 MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
 
-
 dist_noinst_DATA = \
-	README.md \
-	$(NULL)
+    README.md \
+    $(NULL)
diff --git a/libnetdata/locks/Makefile.in b/libnetdata/locks/Makefile.in
new file mode 100644
index 000000000..78ee022d3
--- /dev/null
+++ b/libnetdata/locks/Makefile.in
@@ -0,0 +1,519 @@
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+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
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diff --git a/libnetdata/procfile/Makefile.in b/libnetdata/procfile/Makefile.in
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+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libnetdata/simple_pattern/simple_pattern.c b/libnetdata/simple_pattern/simple_pattern.c
index 57b0aecc8..ab4b9de3c 100644
--- a/libnetdata/simple_pattern/simple_pattern.c
+++ b/libnetdata/simple_pattern/simple_pattern.c
@@ -260,3 +260,74 @@ void simple_pattern_free(SIMPLE_PATTERN *list) {
 
     free_pattern(((struct simple_pattern *)list));
 }
+
+/* Debugging patterns
+
+   This code should be dead - it is useful for debugging but should not be called by production code.
+   Feel free to comment it out, but please leave it in the file.
+*/
+extern void simple_pattern_dump(uint64_t debug_type, SIMPLE_PATTERN *p)
+{
+    struct simple_pattern *root = (struct simple_pattern *)p;
+    if(root==NULL) {
+        debug(debug_type,"dump_pattern(NULL)");
+        return;
+    }
+    debug(debug_type,"dump_pattern(%p) child=%p next=%p mode=%u match=%s", root, root->child, root->next, root->mode,
+          root->match);
+    if(root->child!=NULL)
+        simple_pattern_dump(debug_type, (SIMPLE_PATTERN*)root->child);
+    if(root->next!=NULL)
+        simple_pattern_dump(debug_type, (SIMPLE_PATTERN*)root->next);
+}
+
+/* Heuristic: decide if the pattern could match a DNS name.
+
+   Although this functionality is used directly by socket.c:connection_allowed() it must be in this file
+   because of the SIMPLE_PATTERN/simple_pattern structure hiding.
+   Based on RFC952 / RFC1123. We need to decide if the pattern may match a DNS name, or not. For the negative
+   cases we need to be sure that it can only match an ipv4 or ipv6 address:
+     * IPv6 addresses contain ':', which are illegal characters in DNS.
+     * IPv4 addresses cannot contain alpha- characters.
+     * DNS TLDs must be alphanumeric to distinguish from IPv4.
+   Some patterns (e.g. "*a*" ) could match multiple cases (i.e. DNS or IPv6).
+   Some patterns will be awkward (e.g. "192.168.*") as they look like they are intended to match IPv4-only
+   but could match DNS (i.e. "192.168.com" is a valid name).
+*/
+static void scan_is_potential_name(struct simple_pattern *p, int *alpha, int *colon, int *wildcards)
+{
+    while (p) {
+        if (p->match) {
+            if(p->mode == SIMPLE_PATTERN_EXACT && !strcmp("localhost", p->match)) {
+                p = p->child;
+                continue;
+            }
+            char const *scan = p->match;
+            while (*scan != 0) {
+                if ((*scan >= 'a' && *scan <= 'z') || (*scan >= 'A' && *scan <= 'Z'))
+                    *alpha = 1;
+                if (*scan == ':')
+                    *colon = 1;
+                scan++;
+            }
+            if (p->mode != SIMPLE_PATTERN_EXACT)
+                *wildcards = 1;
+            p = p->child;
+        }
+    }
+}
+
+extern int simple_pattern_is_potential_name(SIMPLE_PATTERN *p)
+{
+    int alpha=0, colon=0, wildcards=0;
+    struct simple_pattern *root = (struct simple_pattern*)p;
+    while (root != NULL) {
+        if (root->match != NULL) {
+            scan_is_potential_name(root, &alpha, &colon, &wildcards);
+        }
+        if (root->mode != SIMPLE_PATTERN_EXACT)
+            wildcards = 1;
+        root = root->next;
+    }
+    return (alpha || wildcards) && !colon;
+}
diff --git a/libnetdata/simple_pattern/simple_pattern.h b/libnetdata/simple_pattern/simple_pattern.h
index b96a018ef..cb5e7699d 100644
--- a/libnetdata/simple_pattern/simple_pattern.h
+++ b/libnetdata/simple_pattern/simple_pattern.h
@@ -30,4 +30,7 @@ extern int simple_pattern_matches_extract(SIMPLE_PATTERN *list, const char *str,
 // list can be NULL, in which case, this does nothing.
 extern void simple_pattern_free(SIMPLE_PATTERN *list);
 
+extern void simple_pattern_dump(uint64_t debug_type, SIMPLE_PATTERN *p) ;
+extern int simple_pattern_is_potential_name(SIMPLE_PATTERN *p) ;
+
 #endif //NETDATA_SIMPLE_PATTERN_H
diff --git a/libnetdata/socket/Makefile.am b/libnetdata/socket/Makefile.am
index 1cb69ed99..161784b8f 100644
--- a/libnetdata/socket/Makefile.am
+++ b/libnetdata/socket/Makefile.am
@@ -3,7 +3,6 @@
 AUTOMAKE_OPTIONS = subdir-objects
 MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
 
-
 dist_noinst_DATA = \
-	README.md \
-	$(NULL)
+    README.md \
+    $(NULL)
diff --git a/libnetdata/socket/Makefile.in b/libnetdata/socket/Makefile.in
new file mode 100644
index 000000000..d6e64cacd
--- /dev/null
+++ b/libnetdata/socket/Makefile.in
@@ -0,0 +1,519 @@
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+# @configure_input@
+
+# Copyright (C) 1994-2017 Free Software Foundation, Inc.
+
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+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
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+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libnetdata/socket/socket.c b/libnetdata/socket/socket.c
index fa1414dc0..2289bf4c4 100644
--- a/libnetdata/socket/socket.c
+++ b/libnetdata/socket/socket.c
@@ -1007,13 +1007,16 @@ int accept4(int sock, struct sockaddr *addr, socklen_t *addrlen, int flags) {
  *                        of *writable* bytes (i.e. be aware of the strdup used to compact the pollinfo).
  */
 extern int connection_allowed(int fd, char *client_ip, char *client_host, size_t hostsize, SIMPLE_PATTERN *access_list,
-                              const char *patname) {
+                              const char *patname, int allow_dns)
+{
+    debug(D_LISTENER,"checking %s... (allow_dns=%d)", patname, allow_dns);
     if (!access_list)
         return 1;
     if (simple_pattern_matches(access_list, client_ip))
         return 1;
     // If the hostname is unresolved (and needed) then attempt the DNS lookups.
-    if (client_host[0]==0)
+    //if (client_host[0]==0 && simple_pattern_is_potential_name(access_list))
+    if (client_host[0]==0 && allow_dns)
     {
         struct sockaddr_storage sadr;
         socklen_t addrlen = sizeof(sadr);
@@ -1021,8 +1024,8 @@ extern int connection_allowed(int fd, char *client_ip, char *client_host, size_t
         if (err != 0 ||
             (err = getnameinfo((struct sockaddr *)&sadr, addrlen, client_host, (socklen_t)hostsize,
                               NULL, 0, NI_NAMEREQD)) != 0) {
-            error("Incoming connection on '%s' does not match a numeric pattern, "
-                  "and host could not be resolved (err=%s)", client_ip, gai_strerror(err));
+            error("Incoming %s on '%s' does not match a numeric pattern, and host could not be resolved (err=%s)",
+                  patname, client_ip, gai_strerror(err));
             if (hostsize >= 8)
                 strcpy(client_host,"UNKNOWN");
             return 0;
@@ -1074,9 +1077,8 @@ extern int connection_allowed(int fd, char *client_ip, char *client_host, size_t
 
 // --------------------------------------------------------------------------------------------------------------------
 // accept_socket() - accept a socket and store client IP and port
-
 int accept_socket(int fd, int flags, char *client_ip, size_t ipsize, char *client_port, size_t portsize,
-                  char *client_host, size_t hostsize, SIMPLE_PATTERN *access_list) {
+                  char *client_host, size_t hostsize, SIMPLE_PATTERN *access_list, int allow_dns) {
     struct sockaddr_storage sadr;
     socklen_t addrlen = sizeof(sadr);
 
@@ -1088,7 +1090,7 @@ int accept_socket(int fd, int flags, char *client_ip, size_t ipsize, char *clien
             strncpyz(client_ip, "UNKNOWN", ipsize - 1);
             strncpyz(client_port, "UNKNOWN", portsize - 1);
         }
-        if(!strcmp(client_ip, "127.0.0.1") || !strcmp(client_ip, "::1")) {
+        if (!strcmp(client_ip, "127.0.0.1") || !strcmp(client_ip, "::1")) {
             strncpy(client_ip, "localhost", ipsize);
             client_ip[ipsize - 1] = '\0';
         }
@@ -1126,7 +1128,7 @@ int accept_socket(int fd, int flags, char *client_ip, size_t ipsize, char *clien
                 debug(D_LISTENER, "New UNKNOWN web client from %s port %s on socket %d.", client_ip, client_port, fd);
                 break;
         }
-        if(!connection_allowed(nfd, client_ip, client_host, hostsize, access_list, "connection")) {
+        if (!connection_allowed(nfd, client_ip, client_host, hostsize, access_list, "connection", allow_dns)) {
             errno = 0;
             error("Permission denied for client '%s', port '%s'", client_ip, client_port);
             close(nfd);
@@ -1135,7 +1137,7 @@ int accept_socket(int fd, int flags, char *client_ip, size_t ipsize, char *clien
         }
     }
 #ifdef HAVE_ACCEPT4
-    else if(errno == ENOSYS)
+    else if (errno == ENOSYS)
         error("netdata has been compiled with the assumption that the system has the accept4() call, but it is not here. Recompile netdata like this: ./configure --disable-accept4 ...");
 #endif
 
@@ -1444,7 +1446,7 @@ static void poll_events_process(POLLJOB *p, POLLINFO *pi, struct pollfd *pf, sho
 
                         debug(D_POLLFD, "POLLFD: LISTENER: calling accept4() slot %zu (fd %d)", i, fd);
                         nfd = accept_socket(fd, SOCK_NONBLOCK, client_ip, INET6_ADDRSTRLEN, client_port, NI_MAXSERV,
-                                            client_host, NI_MAXHOST, p->access_list);
+                                            client_host, NI_MAXHOST, p->access_list, p->allow_dns);
                         if (unlikely(nfd < 0)) {
                             // accept failed
 
@@ -1562,6 +1564,7 @@ void poll_events(LISTEN_SOCKETS *sockets
         , int   (*snd_callback)(POLLINFO * /*pi*/, short int * /*events*/)
         , void  (*tmr_callback)(void * /*timer_data*/)
         , SIMPLE_PATTERN *access_list
+        , int allow_dns
         , void *data
         , time_t tcp_request_timeout_seconds
         , time_t tcp_idle_timeout_seconds
@@ -1592,6 +1595,7 @@ void poll_events(LISTEN_SOCKETS *sockets
             .checks_every = (tcp_idle_timeout_seconds / 3) + 1,
 
             .access_list = access_list,
+            .allow_dns   = allow_dns,
 
             .timer_milliseconds = timer_milliseconds,
             .timer_data = timer_data,
diff --git a/libnetdata/socket/socket.h b/libnetdata/socket/socket.h
index 227f05434..eb09b3f9a 100644
--- a/libnetdata/socket/socket.h
+++ b/libnetdata/socket/socket.h
@@ -73,9 +73,9 @@ extern int sock_enlarge_in(int fd);
 extern int sock_enlarge_out(int fd);
 
 extern int connection_allowed(int fd, char *client_ip, char *client_host, size_t hostsize,
-                              SIMPLE_PATTERN *access_list, const char *patname);
+                              SIMPLE_PATTERN *access_list, const char *patname, int allow_dns);
 extern int accept_socket(int fd, int flags, char *client_ip, size_t ipsize, char *client_port, size_t portsize,
-                         char *client_host, size_t hostsize, SIMPLE_PATTERN *access_list);
+                         char *client_host, size_t hostsize, SIMPLE_PATTERN *access_list, int allow_dns);
 
 #ifndef HAVE_ACCEPT4
 extern int accept4(int sock, struct sockaddr *addr, socklen_t *addrlen, int flags);
@@ -155,6 +155,7 @@ struct poll {
     struct pollinfo *first_free;
 
     SIMPLE_PATTERN *access_list;
+    int allow_dns;
 
     void *(*add_callback)(POLLINFO *pi, short int *events, void *data);
     void  (*del_callback)(POLLINFO *pi);
@@ -193,6 +194,7 @@ extern void poll_events(LISTEN_SOCKETS *sockets
         , int   (*snd_callback)(POLLINFO *pi, short int *events)
         , void  (*tmr_callback)(void *timer_data)
         , SIMPLE_PATTERN *access_list
+        , int allow_dns
         , void *data
         , time_t tcp_request_timeout_seconds
         , time_t tcp_idle_timeout_seconds
diff --git a/libnetdata/statistical/Makefile.am b/libnetdata/statistical/Makefile.am
index 1cb69ed99..161784b8f 100644
--- a/libnetdata/statistical/Makefile.am
+++ b/libnetdata/statistical/Makefile.am
@@ -3,7 +3,6 @@
 AUTOMAKE_OPTIONS = subdir-objects
 MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
 
-
 dist_noinst_DATA = \
-	README.md \
-	$(NULL)
+    README.md \
+    $(NULL)
diff --git a/libnetdata/statistical/Makefile.in b/libnetdata/statistical/Makefile.in
new file mode 100644
index 000000000..25b2a9647
--- /dev/null
+++ b/libnetdata/statistical/Makefile.in
@@ -0,0 +1,519 @@
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diff --git a/libnetdata/storage_number/storage_number.h b/libnetdata/storage_number/storage_number.h
index da3ba23fa..28b7f267c 100644
--- a/libnetdata/storage_number/storage_number.h
+++ b/libnetdata/storage_number/storage_number.h
@@ -87,4 +87,8 @@ int print_calculated_number(char *str, calculated_number value);
 #define ACCURACY_LOSS_ACCEPTED_PERCENT 0.0001
 #define accuracy_loss(t1, t2) (((t1) == (t2) || (t1) == 0.0 || (t2) == 0.0) ? 0.0 : (100.0 - (((t1) > (t2)) ? ((t2) * 100.0 / (t1) ) : ((t1) * 100.0 / (t2)))))
 
+// Maximum acceptable rate of increase for counters. With a rate of 10% netdata can safely detect overflows with a
+// period of at least every other 10 samples.
+#define MAX_INCREMENTAL_PERCENT_RATE 10
+
 #endif /* NETDATA_STORAGE_NUMBER_H */
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diff --git a/libnetdata/url/Makefile.am b/libnetdata/url/Makefile.am
index 1cb69ed99..161784b8f 100644
--- a/libnetdata/url/Makefile.am
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+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(DATA)
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
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+install-dvi: install-dvi-am
+
+install-dvi-am:
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+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
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+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
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+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
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+pdf-am:
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+ps: ps-am
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+ps-am:
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+uninstall-am:
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+.MAKE: install-am install-strip
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+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT: