diff --git a/Makefile b/Makefile
index e790e8752..f5396f79b 100644
--- a/Makefile
+++ b/Makefile
@@ -213,8 +213,19 @@ MK_REFKERN_OBJS     := $(foreach arch, $(CONFIG_LIST), \
 MK_FRAME_OBJS       := $(call gen-obj-paths-from-src,$(FRAME_SRC_SUFS),$(MK_FRAME_SRC),$(FRAME_PATH),$(BASE_OBJ_FRAME_PATH))
 
 # Generate object file paths for the addon source code. If one or more addons
-# were not enabled a configure-time, this variable will we empty.
-MK_ADDON_OBJS       := $(call gen-obj-paths-from-src,$(ADDON_SRC_SUFS),$(MK_ADDON_SRC),$(ADDON_PATH),$(BASE_OBJ_ADDON_PATH))
+# were not enabled a configure-time, these variable will we empty.
+# NOTE: We separate the source and objects into kernel and non-kernel lists.
+MK_ADDON_KERS_SRC   := $(foreach addon, $(ADDON_LIST), \
+                           $(filter $(ADDON_PATH)/$(addon)/$(KERNELS_DIR)/%, \
+                                    $(MK_ADDON_SRC)) \
+                        )
+MK_ADDON_OTHER_SRC  := $(foreach addon, $(ADDON_LIST), \
+                           $(filter-out $(ADDON_PATH)/$(addon)/$(KERNELS_DIR)/%, \
+                                        $(MK_ADDON_SRC)) \
+                        )
+MK_ADDON_KERS_OBJS  := $(call gen-obj-paths-from-src,$(ADDON_SRC_SUFS),$(MK_ADDON_KERS_SRC),$(ADDON_PATH),$(BASE_OBJ_ADDON_PATH))
+MK_ADDON_OTHER_OBJS := $(call gen-obj-paths-from-src,$(ADDON_SRC_SUFS),$(MK_ADDON_OTHER_SRC),$(ADDON_PATH),$(BASE_OBJ_ADDON_PATH))
+MK_ADDON_OBJS       := $(MK_ADDON_KERS_OBJS) $(MK_ADDON_OTHER_OBJS)
 
 # Generate object file paths for the sandbox source code. If a sandbox was not
 # enabled a configure-time, this variable will we empty.
@@ -580,6 +591,7 @@ endef
 
 # first argument: a configuration name from the union of config_list and
 # config_name, used to look up the CFLAGS to use during compilation.
+# second argument: the C99 addon file suffix being considered.
 define make-c99-addon-rule
 $(BASE_OBJ_ADDON_PATH)/%.o: $(ADDON_PATH)/%.$(2) $(BLIS_H_FLAT) $(ADDON_H99_FILES) $(MAKE_DEFS_MK_PATHS)
 ifeq ($(ENABLE_VERBOSE),yes)
@@ -590,6 +602,23 @@ else
 endif
 endef
 
+# first argument: a configuration name from the union of config_list and
+# config_name, used to look up the CFLAGS to use during compilation.
+# second argument: the C99 addon file suffix being considered.
+# third argument: the name of the addon being considered.
+define make-c99-addon-kers-rule
+$(BASE_OBJ_ADDON_PATH)/$(3)/$(KERNELS_DIR)/%.o: $(ADDON_PATH)/$(3)/$(KERNELS_DIR)/%.$(2) $(BLIS_H_FLAT) $(ADDON_H99_FILES) $(MAKE_DEFS_MK_PATHS)
+ifeq ($(ENABLE_VERBOSE),yes)
+	$(CC) $(call get-addon-kernel-c99flags-for,$(1)) -c $$< -o $$@
+else
+	@echo "Compiling $$@" $(call get-addon-kernel-text-for,$(1))
+	@$(CC) $(call get-addon-kernel-c99flags-for,$(1)) -c $$< -o $$@
+endif
+endef
+
+# first argument: a configuration name from the union of config_list and
+# config_name, used to look up the CFLAGS to use during compilation.
+# second argument: the C++ addon file suffix being considered.
 define make-cxx-addon-rule
 $(BASE_OBJ_ADDON_PATH)/%.o: $(ADDON_PATH)/%.$(2) $(BLIS_H_FLAT) $(ADDON_HXX_FILES) $(MAKE_DEFS_MK_PATHS)
 ifeq ($(ENABLE_VERBOSE),yes)
@@ -602,6 +631,7 @@ endef
 
 # first argument: a configuration name from the union of config_list and
 # config_name, used to look up the CFLAGS to use during compilation.
+# second argument: the C99 sandbox file suffix being considered.
 define make-c99-sandbox-rule
 $(BASE_OBJ_SANDBOX_PATH)/%.o: $(SANDBOX_PATH)/%.$(2) $(BLIS_H_FLAT) $(SANDBOX_H99_FILES) $(MAKE_DEFS_MK_PATHS)
 ifeq ($(ENABLE_VERBOSE),yes)
@@ -612,6 +642,9 @@ else
 endif
 endef
 
+# first argument: a configuration name from the union of config_list and
+# config_name, used to look up the CFLAGS to use during compilation.
+# second argument: the C++ sandbox file suffix being considered.
 define make-cxx-sandbox-rule
 $(BASE_OBJ_SANDBOX_PATH)/%.o: $(SANDBOX_PATH)/%.$(2) $(BLIS_H_FLAT) $(SANDBOX_HXX_FILES) $(MAKE_DEFS_MK_PATHS)
 ifeq ($(ENABLE_VERBOSE),yes)
@@ -657,6 +690,12 @@ $(foreach kset, $(KERNEL_LIST), $(eval $(call make-kernels-rule,$(kset),$(call g
 $(foreach suf, $(ADDON_C99_SUFS), \
 $(foreach conf, $(CONFIG_NAME), $(eval $(call make-c99-addon-rule,$(conf),$(suf)))))
 
+# Instantiate the build rule for C addon/kernels files. Use the CFLAGS for the
+# configuration family.
+$(foreach addon, $(ADDON_LIST), \
+$(foreach suf, $(ADDON_C99_SUFS), \
+$(foreach conf, $(CONFIG_NAME), $(eval $(call make-c99-addon-kers-rule,$(conf),$(suf),$(addon))))))
+
 # Instantiate the build rule for C++ addon files. Use the CFLAGS for the
 # configuration family.
 $(foreach suf, $(ADDON_CXX_SUFS), \
diff --git a/common.mk b/common.mk
index 33713e9f5..b49089419 100644
--- a/common.mk
+++ b/common.mk
@@ -154,7 +154,7 @@ get-kernel-cflags-for    = $(strip $(call load-var-for,CKOPTFLAGS,$(1)) \
                                    $(BUILD_SYMFLAGS) \
                             )
 
-# When compiling sandboxes, we use flags similar to those of general framework
+# When compiling addons, we use flags similar to those of general framework
 # source. This ensures that the same code can be linked and run across various
 # sub-configurations.
 get-addon-c99flags-for   = $(strip $(call load-var-for,COPTFLAGS,$(1)) \
@@ -169,6 +169,15 @@ get-addon-cxxflags-for   = $(strip $(call load-var-for,COPTFLAGS,$(1)) \
                                    $(BUILD_CPPFLAGS) \
                                    $(BUILD_SYMFLAGS) \
                             )
+# When compiling addon kernels, we use flags similar to those of kernels
+# flags, except we also include the addon header paths.
+get-addon-kernel-c99flags-for = $(strip $(call load-var-for,CKOPTFLAGS,$(1)) \
+                                        $(call load-var-for,CKVECFLAGS,$(1)) \
+                                        $(call get-noopt-cflags-for,$(1)) \
+                                        $(CADDONINCFLAGS) \
+                                        $(BUILD_CPPFLAGS) \
+                                        $(BUILD_SYMFLAGS) \
+                                 )
 
 # When compiling sandboxes, we use flags similar to those of general framework
 # source. This ensures that the same code can be linked and run across various
@@ -203,16 +212,17 @@ get-user-cflags-for      = $(strip $(call load-var-for,COPTFLAGS,$(1)) \
 
 # Define functions that return messages appropriate for each non-verbose line
 # of compilation output.
-get-noopt-text          = "(CFLAGS for no optimization)"
-get-refinit-text-for    = "('$(1)' CFLAGS for ref. kernel init)"
-get-refkern-text-for    = "('$(1)' CFLAGS for ref. kernels)"
-get-config-text-for     = "('$(1)' CFLAGS for config code)"
-get-frame-text-for      = "('$(1)' CFLAGS for framework code)"
-get-kernel-text-for     = "('$(1)' CFLAGS for kernels)"
-get-addon-c99text-for   = "('$(1)' CFLAGS for addons)"
-get-addon-cxxtext-for   = "('$(1)' CXXFLAGS for addons)"
-get-sandbox-c99text-for = "('$(1)' CFLAGS for sandboxes)"
-get-sandbox-cxxtext-for = "('$(1)' CXXFLAGS for sandboxes)"
+get-noopt-text            = "(CFLAGS for no optimization)"
+get-refinit-text-for      = "('$(1)' CFLAGS for ref. kernel init)"
+get-refkern-text-for      = "('$(1)' CFLAGS for ref. kernels)"
+get-config-text-for       = "('$(1)' CFLAGS for config code)"
+get-frame-text-for        = "('$(1)' CFLAGS for framework code)"
+get-kernel-text-for       = "('$(1)' CFLAGS for kernels)"
+get-addon-c99text-for     = "('$(1)' CFLAGS for addons)"
+get-addon-cxxtext-for     = "('$(1)' CXXFLAGS for addons)"
+get-addon-kernel-text-for = "('$(1)' CFLAGS for addon kernels)"
+get-sandbox-c99text-for   = "('$(1)' CFLAGS for sandboxes)"
+get-sandbox-cxxtext-for   = "('$(1)' CXXFLAGS for sandboxes)"