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Message-Id: <20160626173820.13ad67e14e7a29a6563fe129@gmail.com>
Date: Sun, 26 Jun 2016 17:38:20 +0200
From: Emese Revfy <re.emese@...il.com>
To: keescook@...omium.org
Cc: mmarek@...e.com, linux-kbuild@...r.kernel.org,
kernel-hardening@...ts.openwall.com, pageexec@...email.hu
Subject: [PATCH] Add support for complex gcc plugins that don't fit in a
single file
Reported-by: PaX Team <pageexec@...email.hu>
Signed-off-by: Emese Revfy <re.emese@...il.com>
---
scripts/Makefile.gcc-plugins | 3 ++-
scripts/gcc-plugins/Makefile | 9 ++++++---
2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/scripts/Makefile.gcc-plugins b/scripts/Makefile.gcc-plugins
index 61fc4bb..1f922df 100644
--- a/scripts/Makefile.gcc-plugins
+++ b/scripts/Makefile.gcc-plugins
@@ -27,7 +27,7 @@ ifdef CONFIG_GCC_PLUGINS
GCC_PLUGINS_CFLAGS := $(strip $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y)) $(gcc-plugin-cflags-y))
- export PLUGINCC GCC_PLUGINS_CFLAGS GCC_PLUGIN SANCOV_PLUGIN DISABLE_LATENT_ENTROPY_PLUGIN
+ export PLUGINCC GCC_PLUGINS_CFLAGS GCC_PLUGIN GCC_PLUGIN_SUBDIR SANCOV_PLUGIN DISABLE_LATENT_ENTROPY_PLUGIN
ifneq ($(PLUGINCC),)
# SANCOV_PLUGIN can be only in CFLAGS_KCOV because avoid duplication.
@@ -36,6 +36,7 @@ ifdef CONFIG_GCC_PLUGINS
KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
GCC_PLUGIN := $(gcc-plugin-y)
+ GCC_PLUGIN_SUBDIR := $(gcc-plugin-subdir-y)
endif
# If plugins aren't supported, abort the build before hard-to-read compiler
diff --git a/scripts/gcc-plugins/Makefile b/scripts/gcc-plugins/Makefile
index 898449d..94fa139 100644
--- a/scripts/gcc-plugins/Makefile
+++ b/scripts/gcc-plugins/Makefile
@@ -12,14 +12,17 @@ else
export HOST_EXTRACXXFLAGS
endif
-export GCCPLUGINS_DIR HOSTLIBS
-
ifneq ($(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
--
2.8.1
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