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llvm-project/lld/test/ELF/relocatable-empty-archive.s

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[ELF] - Allow producing -r output if only empty archive is given. This is used by linux kernel build system. (https://www.kernel.org/doc/Documentation/kbuild/makefiles.txt "3.2 Built-in object goals") It has for example next configuration for linking built-in.o files: drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) drivers-$(CONFIG_PCI) += arch/ia64/pci/ ... drivers-$(CONFIG_OPROFILE) += arch/ia64/oprofile/ Im most simple case all CONFIG_* options are off. That means linker is called with empty input archive, emulation option and no inputs and expected to generate some relocatable output. ld.bfd is able to do that, we dont. Patch allows to support this case. Differential revision: https://reviews.llvm.org/D33937 llvm-svn: 305069
2017-06-09 20:26:57 +08:00
# REQUIRES: x86
[ELF] - Fix build bot. llvm-svn: 305071
2017-06-09 20:58:13 +08:00
# RUN: rm -f %t.a
[ELF] - Allow producing -r output if only empty archive is given. This is used by linux kernel build system. (https://www.kernel.org/doc/Documentation/kbuild/makefiles.txt "3.2 Built-in object goals") It has for example next configuration for linking built-in.o files: drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) drivers-$(CONFIG_PCI) += arch/ia64/pci/ ... drivers-$(CONFIG_OPROFILE) += arch/ia64/oprofile/ Im most simple case all CONFIG_* options are off. That means linker is called with empty input archive, emulation option and no inputs and expected to generate some relocatable output. ld.bfd is able to do that, we dont. Patch allows to support this case. Differential revision: https://reviews.llvm.org/D33937 llvm-svn: 305069
2017-06-09 20:26:57 +08:00
# RUN: llvm-ar rc %t.a
# RUN: ld.lld -m elf_x86_64 %t.a -o %t -r
[test] Change llvm-readobj -long-option to --long-option or well-known short options. NFC Also change some options that have different semantics (cause confusion) in llvm-readelf mode: -s => -S -t => --symbols -sd => --section-data llvm-svn: 359651
2019-05-01 13:49:01 +08:00
# RUN: llvm-readobj --file-headers %t | FileCheck %s
[ELF] - Allow producing -r output if only empty archive is given. This is used by linux kernel build system. (https://www.kernel.org/doc/Documentation/kbuild/makefiles.txt "3.2 Built-in object goals") It has for example next configuration for linking built-in.o files: drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) drivers-$(CONFIG_PCI) += arch/ia64/pci/ ... drivers-$(CONFIG_OPROFILE) += arch/ia64/oprofile/ Im most simple case all CONFIG_* options are off. That means linker is called with empty input archive, emulation option and no inputs and expected to generate some relocatable output. ld.bfd is able to do that, we dont. Patch allows to support this case. Differential revision: https://reviews.llvm.org/D33937 llvm-svn: 305069
2017-06-09 20:26:57 +08:00
# CHECK: Format: ELF64-x86-64
# CHECK: Arch: x86_64
# CHECK: AddressSize: 64bit
# CHECK: Type: Relocatable