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-rw-r--r--scripts/Kbuild.include14
1 files changed, 8 insertions, 6 deletions
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 122f95c95869..8a9a4e1c7eab 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -215,11 +215,13 @@ else
215arg-check = $(if $(strip $(cmd_$@)),,1) 215arg-check = $(if $(strip $(cmd_$@)),,1)
216endif 216endif
217 217
218# >'< substitution is for echo to work, 218# Replace >$< with >$$< to preserve $ when reloading the .cmd file
219# >$< substitution to preserve $ when reloading .cmd file 219# (needed for make)
220# note: when using inline perl scripts [perl -e '...$$t=1;...'] 220# Replace >#< with >\#< to avoid starting a comment in the .cmd file
221# in $(cmd_xxx) double $$ your perl vars 221# (needed for make)
222make-cmd = $(subst \\,\\\\,$(subst \#,\\\#,$(subst $$,$$$$,$(call escsq,$(cmd_$(1)))))) 222# Replace >'< with >'\''< to be able to enclose the whole string in '...'
223# (needed for the shell)
224make-cmd = $(call escsq,$(subst \#,\\\#,$(subst $$,$$$$,$(cmd_$(1)))))
223 225
224# Find any prerequisites that is newer than target or that does not exist. 226# Find any prerequisites that is newer than target or that does not exist.
225# PHONY targets skipped in both cases. 227# PHONY targets skipped in both cases.
@@ -230,7 +232,7 @@ any-prereq = $(filter-out $(PHONY),$?) $(filter-out $(PHONY) $(wildcard $^),$^)
230if_changed = $(if $(strip $(any-prereq) $(arg-check)), \ 232if_changed = $(if $(strip $(any-prereq) $(arg-check)), \
231 @set -e; \ 233 @set -e; \
232 $(echo-cmd) $(cmd_$(1)); \ 234 $(echo-cmd) $(cmd_$(1)); \
233 echo 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd) 235 printf '%s\n' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd)
234 236
235# Execute the command and also postprocess generated .d dependencies file. 237# Execute the command and also postprocess generated .d dependencies file.
236if_changed_dep = $(if $(strip $(any-prereq) $(arg-check) ), \ 238if_changed_dep = $(if $(strip $(any-prereq) $(arg-check) ), \