path: root/scripts/Makefile.lib
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authorUstyugov Roman <dr_unique@ymg.ru>2005-09-23 08:42:11 +0400
committerSam Ravnborg <sam@mars.ravnborg.org>2005-12-26 00:33:41 +0100
commitf83b5e323f57d6e1f35a839d663e91cebe985e54 (patch)
tree59e19500a8204abd8e77620b7e80138d5f7fda68 /scripts/Makefile.lib
parent4d99f93bdaa1ab49188cac67b4aae9180f8e3960 (diff)
kbuild: set correct KBUILD_MODNAME when using well known kernel symbols as module names
This patch fixes a problem when we use well known kernel symbols as module names. For example, if module source name is current.c, idle_stack.c or etc., we have a bad KBUILD_MODNAME value. For example, KBUILD_MODNAME will be "get_current()" instead of "current", or "(init_thread_union.stack)" instead of "idle_task". The trick is to define a stringify macro on the commandline - named KBUILD_STR for namespace reasons - and then to stringify the module name. There are a few uses of KBUILD_MODNAME throughout the tree but the usage is for debug and will not be harmed by this change so left untouched for now. While at it KBUILD_BASENAME was changed too. Any spinlock usage in the unix module would have created wrong section names without it. Usage in spinlock.h fixed so it no longer stringify KBUILD_BASENAME. Original patch from Ustyogov Roman - all bugs introduced by me. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'scripts/Makefile.lib')
1 files changed, 5 insertions, 3 deletions
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 0f81dcfd6909..550798f57da5 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -81,8 +81,10 @@ obj-dirs := $(addprefix $(obj)/,$(obj-dirs))
# Note: It's possible that one object gets potentially linked into more
# than one module. In that case KBUILD_MODNAME will be set to foo_bar,
# where foo and bar are the name of the modules.
-basename_flags = -DKBUILD_BASENAME=$(subst $(comma),_,$(subst -,_,$(*F)))
-modname_flags = $(if $(filter 1,$(words $(modname))),-DKBUILD_MODNAME=$(subst $(comma),_,$(subst -,_,$(modname))))
+name-fix = $(subst $(comma),_,$(subst -,_,$1))
+basename_flags = -D"KBUILD_BASENAME=KBUILD_STR($(call name-fix,$(*F)))"
+modname_flags = $(if $(filter 1,$(words $(modname))),\
+ -D"KBUILD_MODNAME=KBUILD_STR($(call name-fix,$(modname)))")
_c_flags = $(CFLAGS) $(EXTRA_CFLAGS) $(CFLAGS_$(*F).o)
_a_flags = $(AFLAGS) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o)
@@ -113,7 +115,7 @@ endif
c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(CPPFLAGS) \
$(__c_flags) $(modkern_cflags) \
- $(basename_flags) $(modname_flags)
+ -D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags)
a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(CPPFLAGS) \
$(__a_flags) $(modkern_aflags)

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