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Diffstat (limited to 'time')
-rw-r--r--time/Makefile21
-rw-r--r--time/tzset.c15
2 files changed, 29 insertions, 7 deletions
diff --git a/time/Makefile b/time/Makefile
index ac422bfc42..5efb638c9e 100644
--- a/time/Makefile
+++ b/time/Makefile
@@ -64,7 +64,9 @@ installed-posixrules-file := $(firstword $(filter /%,$(posixrules-file)) \
 
 ifeq ($(cross-compiling),no)
 # Don't try to install the zoneinfo files since we can't run zic.
-install-others = $(addprefix $(zonedir)/,$(zonenames)) \
+install-others = $(addprefix $(zonedir)/,$(zonenames) \
+					 $(zonenames:%=posix/%) \
+					 $(zonenames:%=right/%)) \
 		 $(installed-localtime-file) $(installed-posixrules-file)
 endif
 
@@ -81,8 +83,14 @@ $(tzfiles:%=$(objpfx)z.%): $(objpfx)z.%: % Makefile
 	 echo '$*-zones := $$(subst $$(nl), ,$$($*-zones))'		;\
 	 echo 'ifdef $*-zones'						;\
 	 echo '$$(addprefix $$(datadir)/zone%/,$$($*-zones)): \'	;\
+	 echo '$< $$(objpfx)zic $$(leapseconds) yearistype'		;\
+	 echo '	$$(tzcompile)'						;\
+	 echo '$$(addprefix $$(datadir)/zone%/right/,$$($*-zones)): \'	;\
 	 echo '$< $$(objpfx)zic leapseconds yearistype'			;\
 	 echo '	$$(tzcompile)'						;\
+	 echo '$$(addprefix $$(datadir)/zone%/posix/,$$($*-zones)): \'	;\
+	 echo '$< $$(objpfx)zic /dev/null yearistype'			;\
+	 echo '	$$(tzcompile)'						;\
 	 echo 'endif'							;\
 	 echo 'zonenames := $$(zonenames) $$($*-zones)'			;\
 	) > $@.new
@@ -98,9 +106,18 @@ echo-zonenames: zonenames
 # the command line of `make install' (e.g., "make install prefix=/foo").
 zic-cmd = $(built-program-cmd) -d $(zonedir)
 define tzcompile
-$(zic-cmd) -L $(word 3,$^) -y $(dir $(word 4,$^))$(notdir $(word 4,$^)) $<
+$(zic-cmd)$(target-zone-flavor)
+ -L $(word 3,$^) -y $(dir $(word 4,$^))$(notdir $(word 4,$^)) $<
 endef
 
+# The source files specify the zone names relative to the -d directory,
+# so for the posix/ and right/ flavors we need to pass -d $(zonedir)/posix
+# and the like.  This magic extracts /posix or /right if it's the first
+# component after $(zonedir) in the target name $@.
+target-zone-flavor = $(filter /posix /right, \
+			      /$(firstword $(subst /, , \
+					   $(patsubst $(zonedir)/%,%,$@))))
+
 ifdef localtime
 $(installed-localtime-file): $(zonedir)/$(localtime) $(objpfx)zic
 	$(zic-cmd) -l $(localtime)
diff --git a/time/tzset.c b/time/tzset.c
index 2635155dd2..007997f541 100644
--- a/time/tzset.c
+++ b/time/tzset.c
@@ -90,18 +90,23 @@ DEFUN_VOID(__tzset)
       tz_rules[1].name != tz_rules[0].name)
     free((PTR) tz_rules[1].name);
 
-  tz = getenv("TZ");
+  /* Examine the TZ environment variable.  */
+  tz = getenv ("TZ");
 
-  if (tz != NULL && *tz == ':')
+  if (tz != NULL)
     {
-      __tzfile_read(tz + 1);
+      /* A leading colon means "implementation defined syntax".
+	 We ignore the colon and always use the same algorithm:
+	 try a data file, and if none exists parse the 1003.1 syntax.  */
+      if (*tz == ':')
+	++tz;
+
+      __tzfile_read (tz);
       if (__use_tzfile)
 	{
 	  __tzset_run = 1;
 	  return;
 	}
-      else
-	tz = NULL;
     }
 
   if (tz == NULL || *tz == '\0')