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authorJiri Olsa <jolsa@kernel.org>2015-09-23 12:34:00 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-09-28 20:50:55 +0200
commit9fb81323eb3085b6a47fe81d78541958ae7eaea3 (patch)
tree698541263e3a756dae3337bc90aa68e5a8eebc3c /tools/build
parenttools build: Move dependency copy into function (diff)
downloadlinux-9fb81323eb3085b6a47fe81d78541958ae7eaea3.tar.xz
linux-9fb81323eb3085b6a47fe81d78541958ae7eaea3.zip
tools build: Make the fixdep helper part of the build process
Making the fixdep helper to be invoked within dep-cmd. Each user of the build framework needs to make sure fixdep exists before executing the build itself. If the build doesn't find fixdep, it falls back to the old style dependency tracking. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1443004442-32660-6-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/build')
-rw-r--r--tools/build/Build.include10
-rw-r--r--tools/build/Makefile.build7
2 files changed, 15 insertions, 2 deletions
diff --git a/tools/build/Build.include b/tools/build/Build.include
index 851c420098e7..4d000bc959b4 100644
--- a/tools/build/Build.include
+++ b/tools/build/Build.include
@@ -58,8 +58,14 @@ any-prereq = $(filter-out $(PHONY),$?) $(filter-out $(PHONY) $(wildcard $^),$^)
# Copy dependency data into .cmd file
# - gcc -M dependency info
# - command line to create object 'cmd_object :='
-dep-cmd = cat $(depfile) > $(dot-target).cmd; \
- printf '%s\n' 'cmd_$@ := $(make-cmd)' >> $(dot-target).cmd
+dep-cmd = $(if $(wildcard $(fixdep)), \
+ $(fixdep) $(depfile) $@ '$(make-cmd)' > $(dot-target).tmp; \
+ rm -f $(depfile); \
+ mv -f $(dot-target).tmp $(dot-target).cmd, \
+ printf '\# cannot find fixdep (%s)\n' $(fixdep) > $(dot-target).cmd; \
+ printf '\# using basic dep data\n\n' >> $(dot-target).cmd; \
+ cat $(depfile) >> $(dot-target).cmd; \
+ printf '%s\n' 'cmd_$@ := $(make-cmd)' >> $(dot-target).cmd)
###
# if_changed_dep - execute command if any prerequisite is newer than
diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build
index 0c5f485521d6..4a96473b180f 100644
--- a/tools/build/Makefile.build
+++ b/tools/build/Makefile.build
@@ -21,6 +21,13 @@ endif
build-dir := $(srctree)/tools/build
+# Define $(fixdep) for dep-cmd function
+ifeq ($(OUTPUT),)
+ fixdep := $(build-dir)/fixdep
+else
+ fixdep := $(OUTPUT)/fixdep
+endif
+
# Generic definitions
include $(build-dir)/Build.include