nuttx

History

SPRESENSE e249a2f82f Makefile: Fix Make.dep not updated by config changes Make.dep file should be updated by .config changed after first make. There are 2 cases affected for this problem: 1) Add source files by config symbol 2) Include header files in #ifdef directive These 2 cases may not be included in Make.dep and this may prevent the differential build from working correctly.		2020-07-28 03:59:45 -05:00
..
.gitignore	build: Remve the unnecessary .gitignore	2020-05-23 18:00:40 +01:00
Makefile	Makefile: Fix Make.dep not updated by config changes	2020-07-28 03:59:45 -05:00
README.txt	Beginning to update comments to reflect new organization of the boards/ sub-directory.	2019-08-08 08:46:54 -06:00

README.txt

README
======

  This directory provides support for the two-pass build.  Its primary
  purpose is to incorporate source logic generated by applications into the
  kernel phase of the build.

  In the two pass build, the application logic is built during the first
  phase, pass 1.  In that phase, the application may generate and install
  source files into the pass1/ directory.

  The operating system is built during phase 2 of the build.  At that time,
  those source files in the pass1/ directory will be built and incorporated
  into the kernel address space.

  The primary purpose of the pass1/ directory is to such application-
  generated kernel symbol tables.  For an example of the use of this
  feature, look at apps/examples/module/drivers/Makefile.  Kernel symbol
  tables are needed to support kernel modules.

  Of course, addition board-specific logic in, say, at
  boards/<arch>/<chip>/<board>/src would have to be included to make use of
  the application-installed symbol tables.