www-client/servo-bin-9999: error while loading shared libraries: libunwind-x86_64.so.8

[kentfredric]

After installing servo:

$ servo
/opt/servo/servo: error while loading shared libraries: libunwind-x86_64.so.8: cannot open shared object file: No such file or directory

* sys-libs/libunwind
     Available versions:  (7) 1.1-r1^t 1.2.1-r1^t (~)1.2.1-r2^t (~)1.2.1-r3^t
       {debug debug-frame doc libatomic lzma +static-libs ABI_MIPS="n32 n64 o32" ABI_RISCV="lp64 lp64d" ABI_S390="32 64" ABI_X86="32 64 x32"}
     Homepage:            https://savannah.nongnu.org/projects/libunwind
     Description:         Portable and efficient API to determine the call-chain of a program

* sys-libs/llvm-libunwind
     Available versions:  6.0.1^t 7.1.0^t (~)8.0.0^t (~)8.0.1^t **9.0.0.9999*l^t **10.0.0.9999*l^t {debug +static-libs test ABI_MIPS="n32 n64 o32" ABI_RISCV="lp64 lp64d" ABI_S390="32 64" ABI_X86="32 64 x32"}
     Homepage:            https://github.com/llvm-mirror/libunwind
     Description:         C++ runtime stack unwinder from LLVM

[kentfredric]

Just so its clear that llvm-libunwind is not suitable:

>>> Installing (5 of 5) sys-libs/llvm-libunwind-8.0.1::gentoo
 * checking 13 files for package collisions
>>> Merging sys-libs/llvm-libunwind-8.0.1 to /
--- /usr/
--- /usr/lib64/
>>> /usr/lib64/libunwind.a
>>> /usr/lib64/libunwind.so.1.0
>>> /usr/lib64/libunwind.so.1 -> libunwind.so.1.0
--- /usr/include/
>>> /usr/include/libunwind.h
>>> /usr/include/__libunwind_config.h
>>> /usr/include/unwind.h
--- /usr/lib/
>>> /usr/lib/libunwind.a
--- /usr/lib/debug/
--- /usr/lib/debug/usr/
--- /usr/lib/debug/usr/lib64/
>>> /usr/lib/debug/usr/lib64/libunwind.so.1.0.debug
--- /usr/lib/debug/usr/lib/
>>> /usr/lib/debug/usr/lib/libunwind.so.1.0.debug
>>> /usr/lib/libunwind.so.1.0
>>> /usr/lib/libunwind.so.1 -> libunwind.so.1.0
>>> /usr/lib/libunwind.so -> libunwind.so.1
>>> /usr/lib64/libunwind.so -> libunwind.so.1

Where so-version 8 comes from is anybodies guess.

[kentfredric]

sigh

$ sudo ln -s /usr/lib64/libunwind.so.1.0 /usr/lib64/libunwind-x86_64.so.8
$ servo 
/opt/servo/servo: error while loading shared libraries: libunwind.so.8: cannot open shared object file: No such file or directory
$ sudo ln -s /usr/lib64/libunwind.so.1.0 /usr/lib64/libunwind.so.8
$ servo 
/opt/servo/servo: /usr/lib64/libssl.so.1.1: version `OPENSSL_1_1_1' not found (required by /opt/servo/servo)
$ ~

I only care because I know a servo dev :p