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[llvm-libtool-darwin] Allow flattening archives
Add support for flattening archives while creating static libraries. Hence, can now pass archives as input in addition to Mach-O binaries. Furthermore, archives themselves must only conatain Mach-O binaries. As per cctools' libtool's behavior, llvm-libtool-darwin does not flatten archives recursively. Reviewed by alexshap, smeenai, jhenderson Differential Revision: https://reviews.llvm.org/D83520
This commit is contained in:
Sameer Arora
parent
3086c80b8b
commit
10d39a6183
95
test/tools/llvm-libtool-darwin/archive-flattening.test
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95
test/tools/llvm-libtool-darwin/archive-flattening.test
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@ -0,0 +1,95 @@
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## This test checks that an archive is flattened correctly.
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# RUN: yaml2obj %S/Inputs/input1.yaml -o %t-input1.o
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# RUN: yaml2obj %S/Inputs/input2.yaml -o %t-input2.o
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## Input a correct archive:
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# RUN: rm -f %t.correct.ar
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# RUN: llvm-ar cr %t.correct.ar %t-input1.o %t-input2.o
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# RUN: llvm-libtool-darwin -static -o %t.lib %t.correct.ar
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## Check that binaries are present:
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# RUN: llvm-ar t %t.lib | \
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# RUN: FileCheck %s --check-prefix=CHECK-NAMES --implicit-check-not={{.}} -DPREFIX=%basename_t.tmp
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# CHECK-NAMES: [[PREFIX]]-input1.o
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# CHECK-NAMES-NEXT: [[PREFIX]]-input2.o
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## Check that symbols are present:
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# RUN: llvm-nm --print-armap %t.lib | \
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# RUN: FileCheck %s --check-prefix=CHECK-SYMBOLS -DPREFIX=%basename_t.tmp --match-full-lines
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# CHECK-SYMBOLS: Archive map
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# CHECK-SYMBOLS-NEXT: _symbol1 in [[PREFIX]]-input1.o
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# CHECK-SYMBOLS-NEXT: _symbol2 in [[PREFIX]]-input2.o
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# CHECK-SYMBOLS-EMPTY:
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## Check that output archive is in Darwin format:
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# RUN: llvm-objdump --macho --archive-headers %t.lib | \
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# RUN: FileCheck %s --check-prefix=FORMAT -DPREFIX=%basename_t.tmp -DARCHIVE=%t.lib
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# FORMAT: Archive : [[ARCHIVE]]
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# FORMAT-NEXT: __.SYMDEF
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# FORMAT-NEXT: [[PREFIX]]-input1.o
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# FORMAT-NEXT: [[PREFIX]]-input2.o
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# FORMAT-NOT: {{.}}
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## Passing both archive and object file:
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# RUN: llvm-libtool-darwin -static -o %t.lib %t-input2.o %t.correct.ar %t-input1.o
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# RUN: llvm-ar t %t.lib | \
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# RUN: FileCheck %s --check-prefix=BOTH-NAMES --implicit-check-not={{.}} -DPREFIX=%basename_t.tmp
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# RUN: llvm-nm --print-armap %t.lib | \
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# RUN: FileCheck %s --check-prefix=BOTH-SYMBOLS -DPREFIX=%basename_t.tmp --match-full-lines
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# BOTH-NAMES: [[PREFIX]]-input2.o
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# BOTH-NAMES-NEXT: [[PREFIX]]-input1.o
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# BOTH-NAMES-NEXT: [[PREFIX]]-input2.o
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# BOTH-NAMES-NEXT: [[PREFIX]]-input1.o
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# BOTH-SYMBOLS: Archive map
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# BOTH-SYMBOLS-NEXT: _symbol2 in [[PREFIX]]-input2.o
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# BOTH-SYMBOLS-NEXT: _symbol1 in [[PREFIX]]-input1.o
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# BOTH-SYMBOLS-NEXT: _symbol2 in [[PREFIX]]-input2.o
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# BOTH-SYMBOLS-NEXT: _symbol1 in [[PREFIX]]-input1.o
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# BOTH-SYMBOLS-EMPTY:
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## Cannot read archive:
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# RUN: echo '!<arch>' > %t-invalid-archive.lib
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# RUN: echo 'invalid' >> %t-invalid-archive.lib
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# RUN: not llvm-libtool-darwin -static -o %t.lib %t-invalid-archive.lib 2>&1 | \
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# RUN: FileCheck %s --check-prefix=INVALID-ARCHIVE -DARCHIVE=%t-invalid-archive.lib
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# INVALID-ARCHIVE: error: '[[ARCHIVE]]': truncated or malformed archive
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## Archive member not an object file:
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# RUN: rm -f %t.not-object.ar
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# RUN: touch %t.txt
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# RUN: llvm-ar cr %t.not-object.ar %t.txt
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# RUN: not llvm-libtool-darwin -static -o %t.lib %t.not-object.ar 2>&1 | \
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# RUN: FileCheck %s --check-prefix=NOT-OBJECT -DARCHIVE=%t.not-object.ar -DFILE=%basename_t.tmp.txt
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## Do not recursively flatten archives:
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# RUN: rm -f %t.inner
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# RUN: rm -f %t.outer
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# RUN: llvm-ar cr %t.inner %t-input1.o
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# RUN: llvm-ar cr %t.outer %t.inner
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# RUN: not llvm-libtool-darwin -static -o %t.lib %t.outer 2>&1 | \
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# RUN: FileCheck %s --check-prefix=NOT-OBJECT -DARCHIVE=%t.outer -DFILE=%basename_t.tmp.inner
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# NOT-OBJECT: error: '[[ARCHIVE]]': '[[FILE]]': The file was not recognized as a valid object file
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## Archive member not a Mach-O object file:
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# RUN: rm -f %t.not-macho.ar
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# RUN: yaml2obj %s -o %t.elf
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# RUN: llvm-ar cr %t.not-macho.ar %t.elf
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# RUN: not llvm-libtool-darwin -static -o %t.lib %t.not-macho.ar 2>&1 | \
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# RUN: FileCheck %s --check-prefix=NOT-MACHO -DARCHIVE=%t.not-macho.ar -DFILE=%basename_t.tmp.elf
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# NOT-MACHO: error: '[[ARCHIVE]]': '[[FILE]]': format not supported
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_REL
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Machine: EM_X86_64
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@ -1,4 +1,5 @@
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set(LLVM_LINK_COMPONENTS
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BinaryFormat
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Object
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Support
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)
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@ -17,4 +17,4 @@
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type = Tool
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name = llvm-libtool-darwin
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parent = Tools
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required_libraries = Object Support
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required_libraries = BinaryFormat Object Support
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@ -10,6 +10,7 @@
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/BinaryFormat/Magic.h"
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#include "llvm/Object/ArchiveWriter.h"
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#include "llvm/Object/MachO.h"
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#include "llvm/Object/ObjectFile.h"
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@ -58,11 +59,26 @@ static Error verifyMachOObject(const NewArchiveMember &Member) {
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return Error::success();
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}
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static Error addMember(std::vector<NewArchiveMember> &Members,
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StringRef FileName) {
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static Error addChildMember(std::vector<NewArchiveMember> &Members,
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const object::Archive::Child &M) {
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Expected<NewArchiveMember> NMOrErr =
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NewArchiveMember::getOldMember(M, /*Deterministic=*/true);
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if (!NMOrErr)
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return NMOrErr.takeError();
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// Verify that Member is a Mach-O object file.
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if (Error E = verifyMachOObject(*NMOrErr))
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return E;
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Members.push_back(std::move(*NMOrErr));
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return Error::success();
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}
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static Error
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addMember(std::vector<NewArchiveMember> &Members, StringRef FileName,
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std::vector<std::unique_ptr<MemoryBuffer>> &ArchiveBuffers) {
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Expected<NewArchiveMember> NMOrErr =
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NewArchiveMember::getFile(FileName, /*Deterministic=*/true);
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if (!NMOrErr)
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return createFileError(FileName, NMOrErr.takeError());
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@ -70,6 +86,27 @@ static Error addMember(std::vector<NewArchiveMember> &Members,
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// name.
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NMOrErr->MemberName = sys::path::filename(NMOrErr->MemberName);
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// Flatten archives.
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if (identify_magic(NMOrErr->Buf->getBuffer()) == file_magic::archive) {
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Expected<std::unique_ptr<Archive>> LibOrErr =
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object::Archive::create(NMOrErr->Buf->getMemBufferRef());
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if (!LibOrErr)
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return createFileError(FileName, LibOrErr.takeError());
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object::Archive &Lib = **LibOrErr;
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Error Err = Error::success();
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for (const object::Archive::Child &Child : Lib.children(Err))
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if (Error E = addChildMember(Members, Child))
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return createFileError(FileName, std::move(E));
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if (Err)
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return createFileError(FileName, std::move(Err));
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// Update vector ArchiveBuffers with the MemoryBuffers to transfer
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// ownership.
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ArchiveBuffers.push_back(std::move(NMOrErr->Buf));
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return Error::success();
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}
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// Verify that Member is a Mach-O object file.
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if (Error E = verifyMachOObject(*NMOrErr))
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return E;
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@ -80,8 +117,9 @@ static Error addMember(std::vector<NewArchiveMember> &Members,
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static Error createStaticLibrary() {
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std::vector<NewArchiveMember> NewMembers;
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std::vector<std::unique_ptr<MemoryBuffer>> ArchiveBuffers;
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for (StringRef Member : InputFiles)
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if (Error E = addMember(NewMembers, Member))
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if (Error E = addMember(NewMembers, Member, ArchiveBuffers))
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return E;
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if (Error E = writeArchive(OutputFile, NewMembers,
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