b7ae7297b9
Summary: GNU ar has a `P` modifier that changes filename comparisons to use full paths instead of the basename. As noted in the GNU docs, regular archives are not created with full path names, so P is used to deal with archives created by other archive programs (e.g. see the updated `absolute-paths.test` test case). Since thin archives use full path names -- paths are relative to the archive -- it seems very error prone to not imply P when dealing with thin archives, so P is implied in those cases. (I think this is a deviation from GNU ar that makes sense). This fixes PR37436 via https://github.com/ClangBuiltLinux/linux/issues/33. Reviewers: mstorsjo, pcc, ruiu, davide, david2050, rnk Subscribers: tpimh, llvm-commits, nickdesaulniers Tags: #llvm Differential Revision: https://reviews.llvm.org/D57927 llvm-svn: 354044
29 lines
1.2 KiB
Plaintext
29 lines
1.2 KiB
Plaintext
MSVC's lib.exe produces archives with absolute paths to the members. It's useful
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for llvm-ar to extract them to their basename in the CWD, since usually the
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directories in the path in the archive won't exist during archive extraction.
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Get a temp clean cwd to extract into.
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RUN: rm -rf %t && mkdir %t && cd %t
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RUN: llvm-ar t %S/Inputs/absolute-paths.lib | FileCheck %s --check-prefix=CHECK-LIST
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CHECK-LIST: C:/src/llvm-project/build/dne/b.o
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CHECK-LIST: C:/src/llvm-project/build/dne/a.o
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Check that a.o comes out and defines foo.
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RUN: llvm-ar xP %S/Inputs/absolute-paths.lib 'C:/src/llvm-project/build/dne/a.o'
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RUN: llvm-nm a.o | FileCheck %s --check-prefix=CHECK-A
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CHECK-A: T foo
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Check that b.o comes out and defines bar.
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RUN: llvm-ar xP %S/Inputs/absolute-paths.lib C:/src/llvm-project/build/dne/b.o
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RUN: llvm-nm b.o | FileCheck %s --check-prefix=CHECK-B
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CHECK-B: T bar
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xP above is only required because we were explicitly extracting items from an
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archive with absolute paths. Extracting all objects doesn't need P because we
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aren't explicitly requesting any individual object.
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RUN: rm -f a.o b.o
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RUN: llvm-ar x %S/Inputs/absolute-paths.lib
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RUN: llvm-nm a.o | FileCheck %s --check-prefix=CHECK-A
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RUN: llvm-nm b.o | FileCheck %s --check-prefix=CHECK-B
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