Update comments and README

2 files changed, 19 insertions, 5 deletions

diff --git a/apps/system/zoneinfo/README.txt b/apps/system/zoneinfo/README.txt
index 497a02f29..bcd5530e8 100644
--- a/apps/system/zoneinfo/README.txt
+++ b/apps/system/zoneinfo/README.txt
@@ -60,6 +60,15 @@ modifications to the configuration that I used for testing:
 NOTE:  The full TZ database is quite large.  To create a reasonable sized
 ROMFS image, I had to trim some of the files like this:
 
+  cd nuttx
+  cd tools
+  ./configure.sh sim/nsh
+  cd ..
+  make menuconfig
+
+Select the above localtime() and apps/system/zoneinfo configuration settings.
+Then:
+
   make context
   cd ../apps/system/zoneinfo/tzbin/etc/zoneinfo
 
@@ -73,6 +82,9 @@ force rebuilding of the ROMFS filesystem be removing some files:
   cd ../../nuttx
   make
 
+If you have problems building the simulator on your platform, check out
+nuttx/configs/sim/README.txt.  You might find some help there.
+
 Here is a sample run.  I have not seen any errors in single stepping through
 the logic but neither am I certain that everything is working properly:
 
diff --git a/nuttx/libc/Kconfig b/nuttx/libc/Kconfig
index 9aedf7b85..51b6d042d 100644
--- a/nuttx/libc/Kconfig
+++ b/nuttx/libc/Kconfig
@@ -275,7 +275,9 @@ config LIBC_LOCALTIME
 		environment variable TZ must be set to the name of that timezone file
 		when tzset() is called.
 
-		See https://www.iana.org/time-zones
+		See https://www.iana.org/time-zones .  See also apps/system/zoneinfo
+		which provides a framework for incorporating the TZ database into a
+		NuttX build.
 
 if LIBC_LOCALTIME
 
@@ -286,10 +288,10 @@ config LIBC_TZ_MAX_TIMES
 		Timezone files with more than this number of times will not be usedi
 		(tmecnt).
 
-		Warning: Some files in IANA TZ database include many more times than
-		this.  The current posixrules file, for example, has timecnt = 236.
-		The value of TX_MAX_ITMES in the tzfile.h header file on my Linux
-		system is 370.  You may want to reduce this value for a smaller
+		Warning: Some files in IANA TZ database include many times.  The current
+		posixrules file, for example, has timecnt = 236.  The value of
+		TX_MAX_ITMES in the tzfile.h header file on my Linux system is 370, the
+		default used here.  You may want to reduce this value for a smaller
 		footprint.
 
 config LIBC_TZ_MAX_TYPES