Michel Dänzer wrote:
On 18/10/17 05:41 PM, Emil Velikov wrote:
On 17 October 2017 at 15:39, Andy Furniss <[email protected]>
wrote:
Emil Velikov wrote:
On a "bad" build (-DLLVM_BUILD_LLVM_DYLIB=ON) I get
andy [~]$ llvm-config --link-shared --libs bitwriter
llvm-config: error: missing: /usr/lib/libLLVMDemangle.so
llvm-config: error: missing: /usr/lib/libLLVMSupport.so
llvm-config: error: missing:
/usr/lib/libLLVMBinaryFormat.so llvm-config: error:
missing: /usr/lib/libLLVMCore.so llvm-config: error:
missing: /usr/lib/libLLVMBitReader.so llvm-config: error:
missing: /usr/lib/libLLVMMC.so llvm-config: error: missing:
/usr/lib/libLLVMMCParser.so llvm-config: error: missing:
/usr/lib/libLLVMObject.so llvm-config: error: missing:
/usr/lib/libLLVMProfileData.so llvm-config: error: missing:
/usr/lib/libLLVMAnalysis.so llvm-config: error: missing:
/usr/lib/libLLVMBitWriter.so
These here indicate that something in LLVM broke. Please report
it ASAP so that we don't get a LLVM release with this bug.
https://bugs.llvm.org/show_bug.cgi?id=34977
Great, thank you. In the interim please use the
LLVM_LINK_LLVM_DYLIB workaround. Just checked LLVM 5.0 w/o
LLVM_LINK_LLVM_DYLIB - seems to also be broken in the same way.
Considering distributions (checked Fedora, Arch, Ubuntu and
Debian) toggle both BUILD and LINK together, I'm inclined to keep
things as-is.
Right, I'd recommend enabling LLVM_LINK_LLVM_DYLIB anyway when
LLVM_BUILD_LLVM_DYLIB is enabled. Is there any particular reason for
enabling the latter but not the former?
No idea from a technical POV.
As a user, when cmake became mandatory, looking at the cmake docs
there is option BUILD_SHARED_LIBS - but it is noted not to use this
"BUILD_SHARED_LIBS is only recommended for use by LLVM developers. If
you want to build LLVM as a shared library, you should use the
LLVM_BUILD_LLVM_DYLIB option."
I also notice that blfs use LLVM_BUILD_LLVM_DYLIB
http://www.linuxfromscratch.org/blfs/view/systemd/general/llvm.html
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