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https://github.com/wolfSSL/wolfssl.git
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38 lines
1.1 KiB
Makefile
38 lines
1.1 KiB
Makefile
SHELL=/bin/bash
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# libwolfssl Kbuild
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# wolfcrypto asm provokes many objtool complaints:
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# "call without frame pointer save/setup",
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# "BP used as a scratch register",
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# "indirect jump found in RETPOLINE build",
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# and "is missing an ELF size annotation"
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# see /usr/src/linux/tools/objtool/Documentation/stack-validation.txt
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#OBJECT_FILES_NON_STANDARD := y
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obj-m := libwolfssl.o
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ifeq "$(WOLFSSL_OBJ_FILES)" ""
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$(error $$WOLFSSL_OBJ_FILES is unset.)
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endif
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ifeq "$(WOLFSSL_CFLAGS)" ""
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$(error $$WOLFSSL_CFLAGS is unset.)
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endif
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hostprogs := linuxkm/get_thread_size
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always-y := $(hostprogs)
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HOST_EXTRACFLAGS += $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CFLAGS) -static
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$(patsubst %, $(obj)/%, $(WOLFSSL_OBJ_FILES)): $(obj)/linuxkm/get_thread_size
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KERNEL_THREAD_STACK_SIZE=$(shell $(obj)/linuxkm/get_thread_size)
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MAX_STACK_FRAME_SIZE=$(shell echo $$(( $(KERNEL_THREAD_STACK_SIZE) / 4)))
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libwolfssl-y := $(WOLFSSL_OBJ_FILES)
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ccflags-y = $(WOLFSSL_CFLAGS) -Wframe-larger-than=$(MAX_STACK_FRAME_SIZE) -mpreferred-stack-boundary=4
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%/libwolfssl.mod.o: ccflags-y :=
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%/lkm_testcrypto.o: ccflags-y += -DNO_MAIN_DRIVER
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asflags-y := $(WOLFSSL_ASFLAGS)
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