linux/scripts/Makefile.build, branch v2.6.25

kbuild: introduce new option to enhance section mismatch analysis

2008-01-28T22:21:18Z

Setting the option DEBUG_SECTION_MISMATCH will report additional section mismatch'es but this should in the end makes it possible to get rid of all of them. See help text in lib/Kconfig.debug for details. Signed-off-by: Sam Ravnborg

kbuild: implement modules.order

2008-01-28T22:14:35Z

When multiple built-in modules (especially drivers) provide the same capability, they're prioritized by link order specified by the order listed in Makefile. This implicit ordering is lost for loadable modules. When driver modules are loaded by udev, what comes first in modules.alias file is selected. However, the order in this file is indeterministic (depends on filesystem listing order of installed modules). This causes confusion. The solution is two-parted. This patch updates kbuild such that it generates and installs modules.order which contains the name of modules ordered according to Makefile. The second part is update to depmod such that it generates output files according to this file. Note that both obj-y and obj-m subdirs can contain modules and ordering information between those two are lost from beginning. Currently obj-y subdirs are put before obj-m subdirs. Sam Ravnborg cleaned up Makefile modifications and suggested using awk to remove duplicate lines from modules.order instead of using separate C program. Signed-off-by: Tejun Heo Acked-by: Greg Kroah-Hartman Cc: Bill Nottingham Cc: Rusty Russell Cc: Kay Sievers Cc: Jon Masters Signed-off-by: Sam Ravnborg

kbuild: introduce ccflags-y, asflags-y and ldflags-y

2007-10-15T20:25:06Z

Introduce ccflags-y, asflags-y and ldflags-y so we soon can deprecate use of EXTRA_CFLAGS, EXTRA_AFLAGS and EXTRA_LDFLAGS. This patch does not touch any in-tree users - thats next round. Lets get this committed first and then fix the users of the soon to be deprecated variants next. The rationale behind this change is to introduce support for makefile fragments like: ccflags-$(CONFIG_WHATEVER_DEBUG) := -DDEBUG As a replacement for the uglier: ifeq ($(CONFIG_WHATEVER_DEBUG),y) EXTRA_CFLAGS := -DDEBUG endif Signed-off-by: Sam Ravnborg

kbuild: check for wrong use of CFLAGS

2007-10-14T20:26:53Z

External modules have in a few cases modifed gcc option by modifying CFLAGS. This has never been documented and was a bad practice. With the check to use KBUILD_CFLAGS it will no longer work so we better error out and tell what was wrong as a service to the external module users. This check can be overruled if KBUILD_NOPEDANTIC is set to something. Addid this possibility may allow older external module to build without any code modifications but potentially only loosing some un-important gcc options. Signed-off-by: Sam Ravnborg

kbuild: kill backward compatibility checks

2007-10-12T19:20:32Z

These checks has been present for several kernel releases (> 5). So lets just get rid of them. With this we no longer check for use of: EXTRA_TARGETS, O_TARGET, L_TARGET, list-multi, export-objs There were three remaining in-tree users of O_TARGET in some unmaintained sh64 code - mail sent to the maintainer + list. Signed-off-by: Sam Ravnborg

kbuild: kill EXTRA_ARFLAGS

2007-10-12T19:20:32Z

EXTRA_ARFLAGS have never been used so no need to carry around on this. A google search did not reveal any external module using this either. Signed-off-by: Sam Ravnborg

kbuild: use LDFLAGS_MODULE only for .ko links

2007-07-25T19:18:19Z

Sam Ravnborg pointed out that Documentation/kbuild/makefiles.txt already says this is what it's for. This patch makes the reality live up to the documentation. This fixes the problem of LDFLAGS_BUILD_ID getting into too many places. Signed-off-by: Roland McGrath Signed-off-by: Sam Ravnborg

kbuild: avoid environment to set variables used by kbuild

2007-07-16T19:15:49Z

A few of the variables used by kbuild has fixed naming. Make sure we do not pick up random values from the environment. Signed-off-by: Sam Ravnborg

kbuild: enable use of code from a different dir

2007-05-06T07:23:45Z

To introduce support for source in one directory but output files in another directory during a non O= build prefix all paths with $(src) repsectively $(obj). Signed-off-by: Sam Ravnborg

kbuild: consistently decide when to rebuild a target

2006-09-25T07:00:00Z

Consistently decide when to rebuild a target across all of if_changed, if_changed_dep, if_changed_rule. PHONY targets are now treated alike (ignored) for all targets While add it make Kbuild.include almost readable by factoring out a few bits to some common variables and reuse this in Makefile.build. Signed-off-by: Sam Ravnborg