Public bug reported:
Regression from Ubuntu 16.04 to Ubuntu 17.10.
I am building a binary with a hard-coded RUNPATH, pointing to the
location of some vendor-supplied shared libraries.
$ readelf -d /home/steve/src/krx/tests/krx.test | grep RUNPATH
0x000000000000001d (RUNPATH) Library runpath: [../library]
On Ubuntu 16.04 the RUNPATH allowed us to locate the libraries.
$ ldd ./krx.test
...
libinisafeNet.so => ../library/libinisafeNet.so (0x00007f35c7754000)
libiniCore.so => ../library/libiniCore.so (0x00007f35c5bea000)
libiniPKI.so => ../library/libiniPKI.so (0x00007f35c5952000)
libiniCrypto.so => ../library/libiniCrypto.so (0x00007f35c56e6000)
On Ubuntu 17.10 it no longer works
$ ldd ./krx.test
...
libinisafeNet.so => ../library/libinisafeNet.so (0x00007fb4acc38000)
libiniCore.so => not found
libiniPKI.so => not found
libiniCrypto.so => not found
Note that setting LD_LIBRARY_PATH does allow the libraries to be found
$ export LD_LIBRARY_PATH=../library
$ ldd ./krx.test
...
libinisafeNet.so => ../library/libinisafeNet.so (0x00007fa787659000)
libiniCore.so => ../library/libiniCore.so (0x00007fa785a86000)
libiniPKI.so => ../library/libiniPKI.so (0x00007fa7857ee000)
libiniCrypto.so => ../library/libiniCrypto.so (0x00007fa785582000)
-------------------
>> LD_DEBUG for Ubuntu 16.04 <<
I set LD_DEBUG=all and ran ldd against my binary.
Here is an excerpt for libiniCore.so:
30438: file=libiniCore.so [0]; needed by ../library/libinisafeNet.so [0]
30438: find library=libiniCore.so [0]; searching
30438: search
path=../library/tls/x86_64:../library/tls:../library/x86_64:../library
(RPATH from file ./krx.test)
30438: trying file=../library/tls/x86_64/libiniCore.so
30438: trying file=../library/tls/libiniCore.so
30438: trying file=../library/x86_64/libiniCore.so
30438: trying file=../library/libiniCore.so
The library is successfully located, and as can be seen from the search path
section, it is using RPATH from file ./krx.test.
-------------------
>> LD_DEBUG for Ubuntu 17.10 <<
I set LD_DEBUG=all and ran ldd against my binary.
Here is an excerpt for libiniCore.so: (it now uses the system search
path, not the krx.test RPATH)
20027: file=libiniCore.so [0]; needed by ../library/libinisafeNet.so [0]
20027: find library=libiniCore.so [0]; searching
20027: search cache=/etc/ld.so.cache
20027: search
path=/lib/x86_64-linux-gnu/tls/haswell/x86_64:/lib/x86_64-linux-gnu/tls/haswell:/lib/x86_64-linux-gnu/tls/x86_64:/lib/x86_64-linux-gnu/tls:/lib/x86_64-linux-gnu/haswell/x86_64:/lib/x86_64-linux-gnu/haswell:/lib/x86_64-linux-gnu/x86_64:/lib/x86_64-linux-gnu:/usr/lib/x86_64-linux-gnu/tls/haswell/x86_64:/usr/lib/x86_64-linux-gnu/tls/haswell:/usr/lib/x86_64-linux-gnu/tls/x86_64:/usr/lib/x86_64-linux-gnu/tls:/usr/lib/x86_64-linux-gnu/haswell/x86_64:/usr/lib/x86_64-linux-gnu/haswell:/usr/lib/x86_64-linux-gnu/x86_64:/usr/lib/x86_64-linux-gnu:/lib/tls/haswell/x86_64:/lib/tls/haswell:/lib/tls/x86_64:/lib/tls:/lib/haswell/x86_64:/lib/haswell:/lib/x86_64:/lib:/usr/lib/tls/haswell/x86_64:/usr/lib/tls/haswell:/usr/lib/tls/x86_64:/usr/lib/tls:/usr/lib/haswell/x86_64:/usr/lib/haswell:/usr/lib/x86_64:/usr/lib
(system search path)
20027: trying file=/lib/x86_64-linux-gnu/tls/haswell/x86_64/libiniCore.so
20027: trying file=/lib/x86_64-linux-gnu/tls/haswell/libiniCore.so
20027: trying file=/lib/x86_64-linux-gnu/tls/x86_64/libiniCore.so
20027: trying file=/lib/x86_64-linux-gnu/tls/libiniCore.so
20027: trying file=/lib/x86_64-linux-gnu/haswell/x86_64/libiniCore.so
20027: trying file=/lib/x86_64-linux-gnu/haswell/libiniCore.so
20027: trying file=/lib/x86_64-linux-gnu/x86_64/libiniCore.so
... ...
20027: trying file=/lib/x86_64/libiniCore.so
20027: trying file=/lib/libiniCore.so
20027: trying file=/usr/lib/tls/haswell/x86_64/libiniCore.so
20027: trying file=/usr/lib/tls/haswell/libiniCore.so
20027: trying file=/usr/lib/tls/x86_64/libiniCore.so
20027: trying file=/usr/lib/tls/libiniCore.so
20027: trying file=/usr/lib/haswell/x86_64/libiniCore.so
20027: trying file=/usr/lib/haswell/libiniCore.so
20027: trying file=/usr/lib/x86_64/libiniCore.so
20027: trying file=/usr/lib/libiniCore.so
So it seems the behaviour of ld has changed, and since it is an indirect
dependency (krx.test --> libinisafeNet.so --> libiniCore.so) the RPATH
for krx.test is no longer used.
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1737608
Title:
RPATH no longer respected for indirect dependencies
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