gollvm build fails

[张勇强]

I build gollvm on linux.  Is gollvm depend on a fiexed version of llvm? what's the version? thx

-- Retry after 5 seconds (attempt #3) ...
/home/zyq/strength/gollvm/workarea/llvm-project/llvm/tools/gollvm/passes/GC.cpp:47:3: 错误：‘Optional’不是一个类型名
   47 |   Optional<bool> isGCManagedPointer(const Type *Ty) const override {
      |   ^~~~~~~~
/home/zyq/strength/gollvm/workarea/llvm-project/llvm/tools/gollvm/passes/GC.cpp: 在函数‘void emitCallsiteEntries(llvm::StackMaps&, llvm::MCStreamer&)’中:
/home/zyq/strength/gollvm/workarea/llvm-project/llvm/tools/gollvm/passes/GC.cpp:174:29: 错误：cannot convert ‘int’ to ‘llvm::Align’
  174 |     OS.emitValueToAlignment(8);
      |                             ^
      |                             |
      |                             int
In file included from /home/zyq/strength/gollvm/workarea/llvm-project/llvm/tools/gollvm/passes/GC.cpp:25:
/home/zyq/strength/gollvm/workarea/llvm-project/llvm/include/llvm/MC/MCStreamer.h:861:43: 附注：  初始化‘virtual void llvm::MCStreamer::emitValueToAlignment(llvm::Align, int64_t, unsigned int, unsigned int)’的实参 1
  861 |   virtual void emitValueToAlignment(Align Alignment, int64_t Value = 0,
      |                                     ~~~~~~^~~~~~~~~
/home/zyq/strength/gollvm/workarea/llvm-project/llvm/tools/gollvm/passes/GC.cpp: 在成员函数‘virtual bool {anonymous}::GoGCPrinter::emitStackMaps(llvm::StackMaps&, llvm::AsmPrinter&)’中:
/home/zyq/strength/gollvm/workarea/llvm-project/llvm/tools/gollvm/passes/GC.cpp:186:6: 错误：‘class llvm::MCStreamer’ has no member named ‘SwitchSection’; did you mean ‘switchSection’?
  186 |   OS.SwitchSection(StackMapSection);
      |      ^~~~~~~~~~~~~
      |      switchSection
/home/zyq/strength/gollvm/workarea/llvm-project/llvm/tools/gollvm/passes/GoStatepoints.cpp:1265:15: 错误：‘ArgMemOnly’不是‘llvm::Attribute’的成员
 1265 |    Attribute::ArgMemOnly, Attribute::InaccessibleMemOnly,
      |               ^~~~~~~~~~
/home/zyq/strength/gollvm/workarea/llvm-project/llvm/tools/gollvm/passes/GoStatepoints.cpp:1265:38: 错误：‘InaccessibleMemOnly’不是‘llvm::Attribute’的成员
 1265 |    Attribute::ArgMemOnly, Attribute::InaccessibleMemOnly,
      |                                      ^~~~~~~~~~~~~~~~~~~
/home/zyq/strength/gollvm/workarea/llvm-project/llvm/tools/gollvm/passes/GoStatepoints.cpp:1266:15: 错误：‘InaccessibleMemOrArgMemOnly’不是‘llvm::Attribute’的成员
 1266 |    Attribute::InaccessibleMemOrArgMemOnly,
      |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/zyq/strength/gollvm/workarea/llvm-project/llvm/tools/gollvm/passes/GoStatepoints.cpp: 在函数‘void makeStatepointExplicitImpl(llvm::CallBase*, llvm::SmallVectorImpl<llvm::Value*>&, llvm::SmallVectorImpl<llvm::Value*>&, {anonymous}::PartiallyConstructedSafepointRecord&, std::vector<{anonymous}::DeferredReplacement>&)’中:
/home/zyq/strength/gollvm/workarea/llvm-project/llvm/tools/gollvm/passes/GoStatepoints.cpp:1433:50: 错误：‘class llvm::PointerType’ has no member named ‘getElementType’; did you mean ‘getArrayElementType’?
 1433 |       Type *T = cast<PointerType>(V->getType())->getElementType();
      |                                                  ^~~~~~~~~~~~~~
      |                                                  getArrayElementType

[Than McIntosh]

Hello,

The gollvm build with LLVM tip is currently broken; there have been some upstream LLVM changes that aren't compatible with the Gollvm bridge code (notably the opaque pointer migration), which causes build failures.  This is a known problem, I haven't had enough free time to fix it recently.

I suggest building with slightly older versions of the LLVM and related repos. For example, this should work:

gollvm commit:  3452ec6bebaa1b432aabed1991475f4444c1775e
libbacktrace commit:  fd9442f7b5413e7788dfcf356f6261afcedb56e8
libffi commit:  2e825e219fa06d308b9a9863d70320606d67490d
gofrontend commit 1c5bfd57131b68b91d8400bb017f35d416f7aa7b
llvm-project commit 09629215c272f09e3ebde6cc7eac9625d28910ff

Let me know if you have issues building with this setup.

Thanks, Than

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[张勇强]

Hi，I got other errors。 error: undefined symbol: __morestack

[zyq@dev01 ~/strength/gollvm/workarea/build.rel]$ cmake -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_LINKER=lld -DCMAKE_C_COMPILER=/opt/compiler/clang-14/bin/clang -DCMAKE_CXX_COMPILER=/opt/compiler/clang-14/bin/clang++  ../llvm-project/llvm -DGOLLVM_DEFAULT_LINKER=lld -DCMAKE_INSTALL_PREFIX=/home/zyq/strength/gollvm/workarea/output -G Ninja  -DCMAKE_INCLUDE_PATH=/opt/compiler/clang-14/include -DCMAKE_LIBRARY_PATH=/opt/compiler/clang-14/lib -DCMAKE_C_FLAGS="-I/opt/compiler/clang-14/include" -DCMAKE_CXX_FLAGS="-I/opt/compiler/clang-14/include" -DC_INCLUDE_DIRS=/opt/compiler/clang-14/include/

[1/6] cd /home/zyq/strength/gollvm/workarea/build.rel/tools/gollvm/gotools && /home/zyq/strength/gollvm/workarea/build.rel/./bin/llvm-goc -o /home/zyq/strength/gollvm/workarea/build.rel/tools/gollvm/gotools/test2json test2json_.o -I /home/zyq/strength/gollvm/workarea/build.rel/tools/gollvm/libgo -L /home/zyq/strength/gollvm/workarea/build.rel/tools/gollvm/libgo /home/zyq/strength/gollvm/workarea/build.rel/tools/gollvm/libgo/libgotool.a
FAILED: tools/gollvm/gotools/test2json /home/zyq/strength/gollvm/workarea/build.rel/tools/gollvm/gotools/test2json
cd /home/zyq/strength/gollvm/workarea/build.rel/tools/gollvm/gotools && /home/zyq/strength/gollvm/workarea/build.rel/./bin/llvm-goc -o /home/zyq/strength/gollvm/workarea/build.rel/tools/gollvm/gotools/test2json test2json_.o -I /home/zyq/strength/gollvm/workarea/build.rel/tools/gollvm/libgo -L /home/zyq/strength/gollvm/workarea/build.rel/tools/gollvm/libgo /home/zyq/strength/gollvm/workarea/build.rel/tools/gollvm/libgo/libgotool.a
ld.lld: error: undefined symbol: __morestack
>>> referenced by main.go:0 (/home/zyq/strength/gollvm/workarea/llvm-project/llvm/tools/gollvm/gofrontend/libgo/go/cmd/test2json/main.go:0)
>>>               test2json_.o:(__go_init_main)
>>> referenced by proc.go:0 ( /home/zyq/strength/gollvm/workarea/llvm-project/llvm/tools/gollvm/gofrontend/libgo/go/os/proc.go:0)
>>>               test2json_.o:(main.usage)
>>> referenced by main.go:0 (/home/zyq/strength/gollvm/workarea/llvm-project/llvm/tools/gollvm/gofrontend/libgo/go/cmd/test2json/main.go:0)
>>>               test2json_.o:(main.main)
>>> referenced 54 more times

I don't know why. and I do some tries.

[zyq@dev01 ~/strength/gollvm/workarea/build.rel]$ clang++ main.cc -fsplit-stack -Wl,-y,__morestack
/opt/compiler/clang-14/bin/ld: /tmp/main-d3384e.o: reference to __morestack
/opt/compiler/clang-14/bin/ld: /opt/compiler/clang-14/bin/../lib64/gcc/x86_64-unknown-linux-gnu/12.1.0/libgcc.a(morestack.o): definition of __morestack
[zyq@dev01 ~/strength/gollvm/workarea/build.rel]$ clang --print-libgcc-file-name
/opt/compiler/clang-14/bin/../lib64/gcc/x86_64-unknown-linux-gnu/12.1.0/libgcc.a
[zyq@dev01 ~/strength/gollvm/workarea/build.rel]$ which clang++
/opt/compiler/clang-14/bin/clang++

modify build.ninjia and add /opt/compiler/clang-14/bin/../lib64/gcc/x86_64-unknown-linux-gnu/12.1.0/libgcc.a to linker.

compile pass. but when I run llvm-goc. I still get this error

[zyq@dev01 ~/strength/gollvm/workarea/gollvm/bin]$ ls
a.out  gccgo  go  llvm-goc  main.go
[zyq@dev01 ~/strength/gollvm/workarea/gollvm/bin]$ llvm-goc main.go
bash: llvm-goc: command not found
[zyq@dev01 ~/strength/gollvm/workarea/gollvm/bin]$ ./llvm-goc main.go
ld.lld: error: undefined symbol: __morestack
>>> referenced by <built-in>:0
>>>               /tmp/compile+assemble-1ab03d.o:(__go_init_main)
>>> referenced by main.go:0
>>>               /tmp/compile+assemble-1ab03d.o:(main.main)
>>> referenced by <built-in>:0
>>>               /tmp/compile+assemble-1ab03d.o:(main.struct_4runtime_0gList_cruntime_0n_bint32_5..eq)
>>> referenced 23 more times

and I must add libgcc.a manually!!

[zyq@dev01 ~/strength/gollvm/workarea/gollvm/bin]$ ./llvm-goc main.go /opt/compiler/clang-14/bin/../lib64/gcc/x86_64-unknown-linux-gnu/12.1.0/libgcc.a

My bin compiled with clang14 toolchain has default rpath and interpreter。 but llvm-goc does not. I don't know why. Do you have any idea(by modify some code?)

[zyq@dev01 ~/strength/gollvm/workarea/xsxs/gollvm/bin]$ readelf -d go
 0x0000000000000001 (NEEDED)             Shared library: [libgo.so.15git]
 0x0000000000000001 (NEEDED)             Shared library: [libm.so.6]
 0x0000000000000001 (NEEDED)             Shared library: [libgcc_s.so.1]
 0x0000000000000001 (NEEDED)             Shared library: [libc.so.6]
 0x0000000000000001 (NEEDED)             Shared library: [ld-linux-x86-64.so.2]

[zyq@dev01 ~/strength/gollvm/workarea/xsxs/gollvm/bin]$ readelf -l go
      [Requesting program interpreter: /lib64/ld-linux-x86-64.so.2]

My self example is ok:

[zyq@dev01 ~/strength/gollvm/workarea/xsxs/gollvm/bin]$ /opt/compiler/clang-14/bin/clang++ main.cc
[zyq@dev01 ~/strength/gollvm/workarea/xsxs/gollvm/bin]$ readelf -l a.out
      [Requesting program interpreter: /opt/compiler/clang-14/lib64/ld-linux-x86-64.so.2]

[zyq@dev01 ~/strength/gollvm/workarea/xsxs/gollvm/bin]$ readelf -d a.out
 0x0000000000000001 (NEEDED)             Shared library: [libstdc++.so.6]
 0x0000000000000001 (NEEDED)             Shared library: [libm.so.6]
 0x0000000000000001 (NEEDED)             Shared library: [libgcc_s.so.1]
 0x0000000000000001 (NEEDED)             Shared library: [libc.so.6]
 0x000000000000000f (RPATH)              Library rpath: [$ORIGIN:$ORIGIN/lib:$ORIGIN/lib64:/opt/compiler/clang-14/lib:/opt/compiler/clang-14/lib/x86_64-unknown-linux-gnu:$ORIGIN/../lib:$ORIGIN/../lib64]

[Adam Malcontenti-Wilson]

Coming here also trying to build gollvm master branch with the same above failure, suggesting that this info and the pinned commits should probably end up in the project's README.