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-rw-r--r--scripts/Makefile.gcc-plugins2
-rw-r--r--scripts/Makefile.lib18
-rw-r--r--scripts/gcc-plugins/Makefile4
3 files changed, 23 insertions, 1 deletions
diff --git a/scripts/Makefile.gcc-plugins b/scripts/Makefile.gcc-plugins
index 5b8a8378ca8a..e50dc931be49 100644
--- a/scripts/Makefile.gcc-plugins
+++ b/scripts/Makefile.gcc-plugins
@@ -38,7 +38,7 @@ export DISABLE_STACKLEAK_PLUGIN
# All the plugin CFLAGS are collected here in case a build target needs to
# filter them out of the KBUILD_CFLAGS.
-GCC_PLUGINS_CFLAGS := $(strip $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y)) $(gcc-plugin-cflags-y))
+GCC_PLUGINS_CFLAGS := $(strip $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y)) $(gcc-plugin-cflags-y)) -DGCC_PLUGINS
export GCC_PLUGINS_CFLAGS
# Add the flags to the build!
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 2fe73cda0bdd..6fc2a82ee3bb 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -296,6 +296,19 @@ $(foreach m, $1, \
$(addprefix $(obj)/, $(call suffix-search, $(patsubst $(obj)/%,%,$m), $2, $3))))
endef
+# Remove ".." and "." from a path, without using "realpath"
+# Usage:
+# $(call normalize_path,path/to/../file)
+define normalize_path
+$(strip $(eval elements :=) \
+$(foreach elem,$(subst /, ,$1), \
+ $(if $(filter-out .,$(elem)), \
+ $(if $(filter ..,$(elem)), \
+ $(eval elements := $(wordlist 2,$(words $(elements)),x $(elements))), \
+ $(eval elements := $(elements) $(elem))))) \
+$(subst $(space),/,$(elements)))
+endef
+
# Build commands
# ===========================================================================
# These are shared by some Makefile.* files.
@@ -343,6 +356,11 @@ quiet_cmd_copy = COPY $@
$(obj)/%: $(src)/%_shipped
$(call cmd,copy)
+# Touch a file
+# ===========================================================================
+quiet_cmd_touch = TOUCH $(call normalize_path,$@)
+ cmd_touch = touch $@
+
# Commands useful for building a boot image
# ===========================================================================
#
diff --git a/scripts/gcc-plugins/Makefile b/scripts/gcc-plugins/Makefile
index 320afd3cf8e8..05b14aba41ef 100644
--- a/scripts/gcc-plugins/Makefile
+++ b/scripts/gcc-plugins/Makefile
@@ -66,3 +66,7 @@ quiet_cmd_plugin_cxx_o_c = HOSTCXX $@
$(plugin-objs): $(obj)/%.o: $(src)/%.c FORCE
$(call if_changed_dep,plugin_cxx_o_c)
+
+$(obj)/../../include/generated/gcc-plugins.h: $(plugin-single) $(plugin-multi) FORCE
+ $(call if_changed,touch)
+always-y += ../../include/generated/gcc-plugins.h