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-rw-r--r--tools/bpf/resolve_btfids/Makefile112
1 files changed, 112 insertions, 0 deletions
diff --git a/tools/bpf/resolve_btfids/Makefile b/tools/bpf/resolve_btfids/Makefile
new file mode 100644
index 0000000000..4b8079f294
--- /dev/null
+++ b/tools/bpf/resolve_btfids/Makefile
@@ -0,0 +1,112 @@
+# SPDX-License-Identifier: GPL-2.0-only
+include ../../scripts/Makefile.include
+include ../../scripts/Makefile.arch
+
+srctree := $(abspath $(CURDIR)/../../../)
+
+ifeq ($(V),1)
+ Q =
+ msg =
+else
+ Q = @
+ ifeq ($(silent),1)
+ msg =
+ else
+ msg = @printf ' %-8s %s%s\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))";
+ endif
+ MAKEFLAGS=--no-print-directory
+endif
+
+# Overrides for the prepare step libraries.
+HOST_OVERRIDES := AR="$(HOSTAR)" CC="$(HOSTCC)" LD="$(HOSTLD)" ARCH="$(HOSTARCH)" \
+ CROSS_COMPILE="" EXTRA_CFLAGS="$(HOSTCFLAGS)"
+
+RM ?= rm
+HOSTCC ?= gcc
+HOSTLD ?= ld
+HOSTAR ?= ar
+CROSS_COMPILE =
+
+OUTPUT ?= $(srctree)/tools/bpf/resolve_btfids/
+
+LIBBPF_SRC := $(srctree)/tools/lib/bpf/
+SUBCMD_SRC := $(srctree)/tools/lib/subcmd/
+
+BPFOBJ := $(OUTPUT)/libbpf/libbpf.a
+LIBBPF_OUT := $(abspath $(dir $(BPFOBJ)))/
+SUBCMDOBJ := $(OUTPUT)/libsubcmd/libsubcmd.a
+SUBCMD_OUT := $(abspath $(dir $(SUBCMDOBJ)))/
+
+LIBBPF_DESTDIR := $(LIBBPF_OUT)
+LIBBPF_INCLUDE := $(LIBBPF_DESTDIR)include
+
+SUBCMD_DESTDIR := $(SUBCMD_OUT)
+SUBCMD_INCLUDE := $(SUBCMD_DESTDIR)include
+
+BINARY := $(OUTPUT)/resolve_btfids
+BINARY_IN := $(BINARY)-in.o
+
+all: $(BINARY)
+
+prepare: $(BPFOBJ) $(SUBCMDOBJ)
+
+$(OUTPUT) $(OUTPUT)/libsubcmd $(LIBBPF_OUT):
+ $(call msg,MKDIR,,$@)
+ $(Q)mkdir -p $(@)
+
+$(SUBCMDOBJ): fixdep FORCE | $(OUTPUT)/libsubcmd
+ $(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(SUBCMD_OUT) \
+ DESTDIR=$(SUBCMD_DESTDIR) $(HOST_OVERRIDES) prefix= subdir= \
+ $(abspath $@) install_headers
+
+$(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(LIBBPF_OUT)
+ $(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) OUTPUT=$(LIBBPF_OUT) \
+ DESTDIR=$(LIBBPF_DESTDIR) $(HOST_OVERRIDES) prefix= subdir= \
+ $(abspath $@) install_headers
+
+LIBELF_FLAGS := $(shell $(HOSTPKG_CONFIG) libelf --cflags 2>/dev/null)
+LIBELF_LIBS := $(shell $(HOSTPKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf)
+
+HOSTCFLAGS_resolve_btfids += -g \
+ -I$(srctree)/tools/include \
+ -I$(srctree)/tools/include/uapi \
+ -I$(LIBBPF_INCLUDE) \
+ -I$(SUBCMD_INCLUDE) \
+ $(LIBELF_FLAGS)
+
+LIBS = $(LIBELF_LIBS) -lz
+
+export srctree OUTPUT HOSTCFLAGS_resolve_btfids Q HOSTCC HOSTLD HOSTAR
+include $(srctree)/tools/build/Makefile.include
+
+$(BINARY_IN): fixdep FORCE prepare | $(OUTPUT)
+ $(Q)$(MAKE) $(build)=resolve_btfids
+
+$(BINARY): $(BPFOBJ) $(SUBCMDOBJ) $(BINARY_IN)
+ $(call msg,LINK,$@)
+ $(Q)$(HOSTCC) $(BINARY_IN) $(KBUILD_HOSTLDFLAGS) -o $@ $(BPFOBJ) $(SUBCMDOBJ) $(LIBS)
+
+clean_objects := $(wildcard $(OUTPUT)/*.o \
+ $(OUTPUT)/.*.o.cmd \
+ $(OUTPUT)/.*.o.d \
+ $(LIBBPF_OUT) \
+ $(LIBBPF_DESTDIR) \
+ $(SUBCMD_OUT) \
+ $(SUBCMD_DESTDIR) \
+ $(OUTPUT)/resolve_btfids)
+
+ifneq ($(clean_objects),)
+clean: fixdep-clean
+ $(call msg,CLEAN,$(BINARY))
+ $(Q)$(RM) -rf $(clean_objects)
+else
+clean:
+endif
+
+tags:
+ $(call msg,GEN,,tags)
+ $(Q)ctags -R . $(LIBBPF_SRC) $(SUBCMD_SRC)
+
+FORCE:
+
+.PHONY: all FORCE clean tags prepare