11bb2f7a45
Stephen and 0-DAY CI Kernel Test Service reported broken cross build for arm (arm-linux-gnueabi-gcc (GCC) 9.3.0), with following output: /tmp/ccMS5uth.s: Assembler messages: /tmp/ccMS5uth.s:69: Error: unrecognized symbol type "" /tmp/ccMS5uth.s:82: Error: unrecognized symbol type "" Having '@object' for .type diretive is wrong because '@' is comment character for some architectures. Using STT_OBJECT instead that should work everywhere. Also using HOST* variables to build resolve_btfids so it's properly build in crossbuilds (stolen from objtool's Makefile). Reported-by: kernel test robot <lkp@intel.com> Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/bpf/20200714102534.299280-2-jolsa@kernel.org
91 lines
2.1 KiB
Makefile
91 lines
2.1 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0-only
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include ../../scripts/Makefile.include
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ifeq ($(srctree),)
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srctree := $(patsubst %/,%,$(dir $(CURDIR)))
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srctree := $(patsubst %/,%,$(dir $(srctree)))
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srctree := $(patsubst %/,%,$(dir $(srctree)))
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endif
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ifeq ($(V),1)
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Q =
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msg =
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else
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Q = @
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msg = @printf ' %-8s %s%s\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))";
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MAKEFLAGS=--no-print-directory
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endif
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# always use the host compiler
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ifneq ($(LLVM),)
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HOSTAR ?= llvm-ar
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HOSTCC ?= clang
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HOSTLD ?= ld.lld
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else
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HOSTAR ?= ar
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HOSTCC ?= gcc
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HOSTLD ?= ld
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endif
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AR = $(HOSTAR)
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CC = $(HOSTCC)
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LD = $(HOSTLD)
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OUTPUT ?= $(srctree)/tools/bpf/resolve_btfids/
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LIBBPF_SRC := $(srctree)/tools/lib/bpf/
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SUBCMD_SRC := $(srctree)/tools/lib/subcmd/
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BPFOBJ := $(OUTPUT)/libbpf.a
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SUBCMDOBJ := $(OUTPUT)/libsubcmd.a
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BINARY := $(OUTPUT)/resolve_btfids
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BINARY_IN := $(BINARY)-in.o
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all: $(BINARY)
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$(OUTPUT):
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$(call msg,MKDIR,,$@)
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$(Q)mkdir -p $(OUTPUT)
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$(SUBCMDOBJ): fixdep FORCE
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$(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(OUTPUT)
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$(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(OUTPUT)
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$(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) OUTPUT=$(abspath $(dir $@))/ $(abspath $@)
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CFLAGS := -g \
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-I$(srctree)/tools/include \
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-I$(srctree)/tools/include/uapi \
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-I$(LIBBPF_SRC) \
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-I$(SUBCMD_SRC)
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LIBS = -lelf -lz
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export srctree OUTPUT CFLAGS Q
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include $(srctree)/tools/build/Makefile.include
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$(BINARY_IN): fixdep FORCE
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$(Q)$(MAKE) $(build)=resolve_btfids
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$(BINARY): $(BPFOBJ) $(SUBCMDOBJ) $(BINARY_IN)
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$(call msg,LINK,$@)
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$(Q)$(CC) $(BINARY_IN) $(LDFLAGS) -o $@ $(BPFOBJ) $(SUBCMDOBJ) $(LIBS)
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libsubcmd-clean:
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$(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(OUTPUT) clean
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libbpf-clean:
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$(Q)$(MAKE) -C $(LIBBPF_SRC) OUTPUT=$(OUTPUT) clean
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clean: libsubcmd-clean libbpf-clean fixdep-clean
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$(call msg,CLEAN,$(BINARY))
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$(Q)$(RM) -f $(BINARY); \
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find $(if $(OUTPUT),$(OUTPUT),.) -name \*.o -or -name \*.o.cmd -or -name \*.o.d | xargs $(RM)
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tags:
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$(call msg,GEN,,tags)
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$(Q)ctags -R . $(LIBBPF_SRC) $(SUBCMD_SRC)
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FORCE:
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.PHONY: all FORCE clean tags
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