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authorEmese Revfy <re.emese@gmail.com>2016-06-26 17:38:20 +0200
committerKees Cook <keescook@chromium.org>2016-08-09 02:53:05 +0200
commitcaefd8c9a9fb06811e07bf3571e5d4450846b16a (patch)
tree675552008567fe3ce2cfe99a83ab1dce23e5e323 /scripts
parentgcc-plugins: Automate make rule generation (diff)
downloadlinux-caefd8c9a9fb06811e07bf3571e5d4450846b16a.tar.xz
linux-caefd8c9a9fb06811e07bf3571e5d4450846b16a.zip
gcc-plugins: Add support for plugin subdirectories
This adds support for building more complex gcc plugins that live in a subdirectory instead of just in a single source file. Reported-by: PaX Team <pageexec@freemail.hu> Signed-off-by: Emese Revfy <re.emese@gmail.com> [kees: clarified commit message] Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to '')
-rw-r--r--scripts/Makefile.gcc-plugins3
-rw-r--r--scripts/gcc-plugins/Makefile9
2 files changed, 8 insertions, 4 deletions
diff --git a/scripts/Makefile.gcc-plugins b/scripts/Makefile.gcc-plugins
index ffb928b9c74b..61f0e6db909b 100644
--- a/scripts/Makefile.gcc-plugins
+++ b/scripts/Makefile.gcc-plugins
@@ -21,7 +21,7 @@ ifdef CONFIG_GCC_PLUGINS
GCC_PLUGINS_CFLAGS := $(strip $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y)) $(gcc-plugin-cflags-y))
- export PLUGINCC GCC_PLUGINS_CFLAGS GCC_PLUGIN SANCOV_PLUGIN
+ export PLUGINCC GCC_PLUGINS_CFLAGS GCC_PLUGIN GCC_PLUGIN_SUBDIR SANCOV_PLUGIN
ifneq ($(PLUGINCC),)
# SANCOV_PLUGIN can be only in CFLAGS_KCOV because avoid duplication.
@@ -30,6 +30,7 @@ ifdef CONFIG_GCC_PLUGINS
KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
GCC_PLUGIN := $(gcc-plugin-y)
+ GCC_PLUGIN_SUBDIR := $(gcc-plugin-subdir-y)
endif
# If plugins aren't supported, abort the build before hard-to-read compiler
diff --git a/scripts/gcc-plugins/Makefile b/scripts/gcc-plugins/Makefile
index ee0a75d2a1c7..8b29dc17c73c 100644
--- a/scripts/gcc-plugins/Makefile
+++ b/scripts/gcc-plugins/Makefile
@@ -12,15 +12,18 @@ else
export HOST_EXTRACXXFLAGS
endif
-export GCCPLUGINS_DIR HOSTLIBS
-
ifneq ($(CFLAGS_KCOV), $(SANCOV_PLUGIN))
GCC_PLUGIN := $(filter-out $(SANCOV_PLUGIN), $(GCC_PLUGIN))
endif
-$(HOSTLIBS)-y := $(GCC_PLUGIN)
+export HOSTLIBS
+
+$(HOSTLIBS)-y := $(foreach p,$(GCC_PLUGIN),$(if $(findstring /,$(p)),,$(p)))
always := $($(HOSTLIBS)-y)
$(foreach p,$($(HOSTLIBS)-y:%.so=%),$(eval $(p)-objs := $(p).o))
+subdir-y := $(GCC_PLUGIN_SUBDIR)
+subdir- += $(GCC_PLUGIN_SUBDIR)
+
clean-files += *.so