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Author SHA1 Message Date
Jukka Rissanen 0ff4c25958 build: Add rules in Makefile.gen to generate a hex file
This commit is useful if there is a need to generate a file
that can be included into the application at build time.
The file can also be compressed automatically when embedding it.

Files to be generated are listed in
     generate_inc_file
     generate_inc_gz_file
variables.

How to use this commit in your application:

1. Add this to your application Makefile

   SRC = $(ZEPHYR_BASE)/<your-app-dir>/src
   include $(ZEPHYR_BASE)/scripts/Makefile.gen

2. Add needed binary/other embedded files into src/Makefile
   to "generate_inc_file" or "generate_inc_gz_file" variables:

   # List of files that are used to generate a file that can be
   # included into .c file.
   generate_inc_file += \
           echo-apps-cert.der \
           echo-apps-key.der \
           file.bin

   generate_inc_gz_file += \
           index.html

   include $(ZEPHYR_BASE)/scripts/Makefile.gen

3. In the application, do something with the embedded file

   static const unsigned char inc_file[] = {
   #include "file.bin.inc"
   };

   static const unsigned char gz_inc_file[] = {
   #include "index.html.gz.inc"
   };

The generated files in ${SRC}/*.inc are automatically removed
when you do "make pristine"

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
2017-09-18 14:56:16 -04:00