diff options
Diffstat (limited to 'Documentation/smart-config.txt')
| -rw-r--r-- | Documentation/smart-config.txt | 39 |
1 files changed, 20 insertions, 19 deletions
diff --git a/Documentation/smart-config.txt b/Documentation/smart-config.txt index b31d252fa..c9bed4cf8 100644 --- a/Documentation/smart-config.txt +++ b/Documentation/smart-config.txt @@ -1,5 +1,5 @@ Smart CONFIG_* Dependencies -Fri 2 Dec 1997 +1 August 1999 Michael Chastain <mec@shout.net> Werner Almesberger <almesber@lrc.di.epfl.ch> @@ -44,22 +44,21 @@ Here is the solution: It now generates these dependencies: drivers/net/foo.c: \ - include/config/foo_autofrob.h \ - include/config/foo_model_two.h + include/config/foo/autofrob.h \ + include/config/foo/model/two.h So drivers/net/foo.c depends only on the CONFIG_* lines that it actually uses. - A new program, split-include.c, runs at the end of make config (also - make oldconfig, make menuconfig, and make xconfig). split-include - reads include/linux/autoconf.h and updates the include/linux/*.h - directory, writing one file per option. It updates only the files - that changed. + A new program, split-include.c, runs at the beginning of + compilation (make bzImage or make zImage). split-include reads + include/linux/autoconf.h and updates the include/config/ tree, + writing one file per option. It updates only the files for options + that have changed. - mkdep.c also generates much better warning messages for missing - or unneeded <linux/config.h> lines. In fact, you can get these - messages without generating dependencies with the new top-level - target 'make checkconfig'. + mkdep.c no longer generates warning messages for missing or unneeded + <linux/config.h> lines. The new top-level target 'make checkconfig' + checks for these problems. Flag Dependencies @@ -68,12 +67,14 @@ Flag Dependencies the compilation flags used to build it. The file foo.o has its flags stored in .flags.foo.o. - Suppose the user changes the foo driver from resident to - modular, 'make' will notice that the foo.o was not compiled - with -DMODULE and will recompile foo.c. + Suppose the user changes the foo driver from resident to modular. + 'make' will notice that the current foo.o was not compiled with + -DMODULE and will recompile foo.c. - All .a and .o files made from C source or with 'ld' or 'ar' - have flag dependencies. .S files do not have flag dependencies. + All .o files made from C source have flag dependencies. So do .o + files made with ld, and .a files made with ar. However, .o files + made from assembly source do not have flag dependencies (nobody + needs this yet, but it would be good to fix). Per-source-file Flags @@ -92,8 +93,8 @@ Credit version of this patch. Michael Chastain picked it up and continued development. He is - now the principal author and maintainer. Report bugs to him, - or to all three people together. + now the principal author and maintainer. Please report any bugs + to him. Martin von Loewis wrote flag dependencies, with some modifications by Michael Chastain. |