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Tom Stellard 18b13ed966 CMake: Add LLVM_DYLIB_SYMBOL_VERSIONING option 
Summary:
When apps or other libraries link against a library with symbol
versions, the version string is recorded in the import table, and used
at runtime to resolve the symbol back to a library that provides that
version (vaguely like how two-level namespaces work in Mach-O).  ld's
--default-symver flag tags every exported symbol with a symbol version
string equal to the library's soname.  Using --default-symver means
multiple versions of libLLVM can coexist within the same process, at
least to the extent that they don't try to pass data between each
other's llvms.

As an example, imagine a language like Rust using llvm for CPU codegen,
binding to OpenGL, with Mesa as the OpenGL implementation using llvm for
R600 codegen.  With --default-symver Rust and Mesa will resolve their
llvm usage to the version each was linked against, which need not match.

(Other ELF platforms like BSD and Solaris might have similar semantics,
I've not checked.)

This is based on an autoconf version of this patch by Adam Jackson.

This new option can be used to add --default-symver to the linker flags
for libLLVM.so.

Reviewers: beanz

Reviewed By: beanz

Subscribers: mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D30997

llvm-svn: 302026
2017-05-03 14:43:44 +00:00
..
bugpoint [Bugpoint] Use boolean AND instead of bitwise AND (PR32660) 2017-04-14 15:21:15 +00:00
bugpoint-passes [CMake] bugpoint-passes depends on intrinsics_gen 2016-11-19 02:20:59 +00:00
dsymutil [DWARF] - Take relocations in account when extracting ranges from .debug_ranges 2017-04-24 10:19:45 +00:00
gold Re-apply r299168 and r299169 now that the libdeps are fixed. 2017-03-31 04:47:07 +00:00
llc Move Split DWARF handling to an MC option/command line argument rather than using metadata 2017-04-21 23:35:26 +00:00
lli Module::getOrInsertFunction is using C-style vararg instead of variadic templates. 2017-04-11 15:01:18 +00:00
llvm-ar [llvm-ar] Remove unneeded std::, NFCI. 2017-04-05 15:05:05 +00:00
llvm-as [CMake] llvm-as depends on intrinsics_gen 2016-11-19 02:15:04 +00:00
llvm-as-fuzzer Remove every uses of getGlobalContext() in LLVM (but the C API) 2016-04-14 21:59:01 +00:00
llvm-bcanalyzer Bitcode: Add a string table to the bitcode format. 2017-04-17 17:51:36 +00:00
llvm-c-test Spelling mistakes in comments. NFCI. 2017-03-30 12:59:53 +00:00
llvm-cat Bitcode: Add a string table to the bitcode format. 2017-04-17 17:51:36 +00:00
llvm-config [CMake] Use variable interpolation instead of string concatenation 2017-03-22 12:06:11 +00:00
llvm-cov [ProfileData] Unify getInstrProf*SectionName helpers 2017-04-15 00:09:57 +00:00
llvm-cvtres Add empty shell of llvm-cvtres. 2017-04-21 17:30:29 +00:00
llvm-cxxdump Make the Error class constructor protected 2016-11-11 04:28:40 +00:00
llvm-cxxfilt c++filt: support COFF import thunks 2017-03-22 21:15:19 +00:00
llvm-diff [IR] Redesign the case iterator in SwitchInst to actually be an iterator 2017-04-12 07:27:28 +00:00
llvm-dis [CMake] llvm-dis depends on intrinsics_gen 2016-11-19 02:31:14 +00:00
llvm-dwarfdump Adds initial llvm-dwarfdump --verify support with unit tests. 2017-05-01 22:07:02 +00:00
llvm-dwp [llvm-dwp] - Reuse object::Decompressor class 2017-01-13 15:58:55 +00:00
llvm-extract [llvm-extract] Add option for recursive extraction 2017-04-06 20:51:40 +00:00
llvm-go [llvm-go] parameterize $GOPATH construction 2016-07-27 03:21:51 +00:00
llvm-jitlistener Search for llvm-symbolizer binary in the same directory as argv[0], before 2016-06-09 00:53:21 +00:00
llvm-link llvm-link: Add BitReader to deps corresponding to r301832. 2017-05-01 22:31:43 +00:00
llvm-lto Bitcode: Make the summary reader responsible for merging. NFCI. 2017-05-01 22:04:36 +00:00
llvm-lto2 Object, LTO: Add target triple to irsymtab and LTO API. 2017-04-14 02:55:06 +00:00
llvm-mc [DWARFv5] llvm-mc support for new unit header. 2017-02-28 23:40:46 +00:00
llvm-mc-assemble-fuzzer llvm-mc-fuzzer: add support for assembly 2017-02-27 06:22:17 +00:00
llvm-mc-disassemble-fuzzer llvm-mc-fuzzer: add support for assembly 2017-02-27 06:22:17 +00:00
llvm-mcmarkup Search for llvm-symbolizer binary in the same directory as argv[0], before 2016-06-09 00:53:21 +00:00
llvm-modextract Bitcode: Add a string table to the bitcode format. 2017-04-17 17:51:36 +00:00
llvm-nm [WebAssembly] Improve readobj and nm support for wasm 2017-04-14 19:50:44 +00:00
llvm-objdump [llvm-objdump] Don't attempt to print lines beyond the end of file 2017-04-25 18:56:33 +00:00
llvm-opt-report [llvm-opt-report] Fix context-sensitive lines where nothing happened 2017-01-07 20:21:17 +00:00
llvm-pdbdump Rename pdb::StringTable -> pdb::PDBStringTable. 2017-05-02 18:00:13 +00:00
llvm-profdata Resubmit r297897: [PGO] Value profile for size of memory intrinsic calls 2017-03-16 21:15:48 +00:00
llvm-readobj [PDB/CodeView] Read/write codeview inlinee line information. 2017-05-02 16:56:09 +00:00
llvm-rtdyld Apply clang-tidy's 'performance-faster-string-find' check to LLVM. 2016-11-30 10:01:11 +00:00
llvm-shlib CMake: Add LLVM_DYLIB_SYMBOL_VERSIONING option 2017-05-03 14:43:44 +00:00
llvm-size llvm-size: remove leading dash in '-radix' option 2016-12-23 23:55:08 +00:00
llvm-split [CMake] llvm-split depends on intrinsics_gen 2016-11-18 23:20:38 +00:00
llvm-stress Allow DataLayout to specify addrspace for allocas. 2017-04-10 22:27:50 +00:00
llvm-strings llvm-strings: remove default for -Wcovered-switch-default 2017-01-21 02:52:29 +00:00
llvm-symbolizer Add a verbose/human readable mode to llvm-symbolizer to investigate discriminators and other line table/backtrace features 2017-01-31 22:19:38 +00:00
llvm-xray [XRay][tools] Remove wayward semicolon (NFC) 2017-04-26 03:49:49 +00:00
lto Spelling mistakes in comments. NFCI. 2017-03-30 12:59:53 +00:00
msbuild Create msbuild only when using MSVC 2017-03-16 20:24:14 +00:00
obj2yaml [WebAssembly] Improve support for WebAssembly binary format 2017-03-30 19:44:09 +00:00
opt Turn DISubprogram into a variable-length node. 2017-04-26 23:59:52 +00:00
sancov [sancov] Fix broken links and displaced coloring in coverage-report-server.py 2017-03-20 14:06:04 +00:00
sanstats [CMake] sanstats depends on intrinsics_gen 2016-11-18 23:30:39 +00:00
verify-uselistorder [CMake] verify-uselistorder depends on intrinsics_gen 2016-11-18 23:30:58 +00:00
xcode-toolchain [CMake] Minor fix to regex in r279152 2016-08-18 21:36:36 +00:00
yaml2obj [yaml2obj] Factor out error handling code. 2017-04-05 15:18:16 +00:00
CMakeLists.txt Fixup r271533, or check-clang didn't find llvm-lto as the target. 2016-06-02 20:39:24 +00:00
LLVMBuild.txt Add llvm-cvtres to LLVMBuild.txt 2017-04-21 17:37:31 +00:00