than or equal to gcc 3.0.
cc-ifversion
- cc-ifversion tests the version of $(CC) and equals last argument if
- version expression is true.
+ cc-ifversion tests the version of $(CC) and equals the fourth parameter
+ if version expression is true, or the fifth (if given) if the version
+ expression is false.
Example:
#fs/reiserfs/Makefile
Additional files can be specified in kbuild makefiles by use of $(clean-files).
Example:
- #drivers/pci/Makefile
- clean-files := devlist.h classlist.h
+ #lib/Makefile
+ clean-files := crc32table.h
When executing "make clean", the two files "devlist.h classlist.h" will be
deleted. Kbuild will assume files to be in the same relative directory as the
-Makefile except if an absolute path is specified (path starting with '/').
+Makefile, except if prefixed with $(objtree).
To delete a directory hierarchy use:
#scripts/package/Makefile
clean-dirs := $(objtree)/debian/
-This will delete the directory debian, including all subdirectories.
-Kbuild will assume the directories to be in the same relative path as the
-Makefile if no absolute path is specified (path does not start with '/').
+This will delete the directory debian in the toplevel directory, including all
+subdirectories.
To exclude certain files from make clean, use the $(no-clean-files) variable.
This is only a special case used in the top level Kbuild file: