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View Code? Open in Web Editor NEWEMF(ebpf-module-framework) is a ebpf framework that is convenient to add a new ebpf program in the form of module.
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EMF在Ubuntu22.04 环境中编译失败
环境:
Ubuntu22.04: 5.15.0-53-generic
Ubuntu clang version 14.0.0-1ubuntu1
Target: x86_64-pc-linux-gnu
问题:
使用make编译过程中出现如下的类似错误：
/opt/cs_course/emf-ebpf/lib/libbpf/linker.c:594: undefined reference to `elf_errmsg'
/usr/bin/ld: /opt/cs_course/emf-ebpf/lib/libbpf/linker.c:568: undefined reference to `elf_errmsg'
/usr/bin/ld: /opt/cs_course/emf-ebpf/lib/libbpf/linker.c:576: undefined reference to `elf_errmsg'
/usr/bin/ld: /opt/cs_course/emf-ebpf/lib/libbpf/linker.c:606: undefined reference to `elf_errmsg'
/usr/bin/ld: /opt/cs_course/emf-ebpf/lib/libbpf/linker.c:588: undefined reference to `elf_errmsg'
/usr/bin/ld: /opt/cs_course/emf-ebpf/sysroot/lib/libbpf.a(linker.o):/opt/cs_course/emf-ebpf/lib/libbpf/linker.c:614: more undefined references to `elf_errmsg' follow
libelf库未被链接
仔细观察后是Makefile第53行出现顺序错误
修正之后可以正常编译
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