obj/tooldir.Linux-5.9.0-0.bpo.5-cloud-amd64-x86_64/include/sys/elfdefinitions.h:104: error: unterminated #ifndef
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/libelf.h:237:1: error: unknown type name 'Elf32_Ehdr'
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/libelf.h:238:1: error: unknown type name 'Elf32_Phdr'
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/libelf.h:239:1: error: unknown type name 'Elf32_Shdr'
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/libelf.h:240:1: error: unknown type name 'Elf32_Ehdr'
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/libelf.h:241:1: error: unknown type name 'Elf32_Phdr'
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/libelf.h:250:1: error: unknown type name 'Elf64_Ehdr'
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/libelf.h:251:1: error: unknown type name 'Elf64_Phdr'
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/libelf.h:252:1: error: unknown type name 'Elf64_Shdr'
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/libelf.h:253:1: error: unknown type name 'Elf64_Ehdr'
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/libelf.h:254:1: error: unknown type name 'Elf64_Phdr'
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/_libelf.h:120:33: error: unknown type name 'Elf32_Ehdr'
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/_libelf.h:121:33: error: unknown type name 'Elf64_Ehdr'
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/_libelf.h:124:33: error: unknown type name 'Elf32_Phdr'
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/_libelf.h:125:33: error: unknown type name 'Elf64_Phdr'
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/_libelf.h:147:17: error: unknown type name 'Elf32_Shdr'
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/_libelf.h:148:17: error: unknown type name 'Elf64_Shdr'
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/gelf.h:36:9: error: unknown type name 'Elf64_Addr'
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/gelf.h:37:9: error: unknown type name 'Elf64_Half'
tools/elftoolchain/libelf/../../../external/bsd/elftoolchain/dist/libelf/gelf.h:38:9: error: unknown type name 'Elf64_Off'