Bug#1006920: please split out a libtbbmalloc2 package, both in tbb and onetbb

[Andrius Merkys]

Hello,

For me tbb 2020.3-1 fails to build in sid chroot with tbb.diff applied.
First of all, build runs into missing symbols. I managed to get past
this by removing them:

--- a/debian/libtbbmalloc2.symbols.amd64
+++ b/debian/libtbbmalloc2.symbols.amd64
@@ -2,8 +2,6 @@ libtbbmalloc.so.2 libtbbmalloc2 #MINVER#
  MallocInitializeITT at Base 2017~U7
  _Z9parseFileILi100ELi1EEvPKcRAT0__K13parseFileItem at Base 2018~U6
  _Z9parseFileILi100ELi2EEvPKcRAT0__K13parseFileItem at Base 2018~U6
- (optional)_ZN11MallocMutex11scoped_lockD1Ev at Base 2020.3
- (optional)_ZN11MallocMutex11scoped_lockD2Ev at Base 2020.3
  _ZN3rml10pool_msizeEPNS_10MemoryPoolEPv at Base 2019~U4
  _ZN3rml10pool_resetEPNS_10MemoryPoolE at Base 2017~U7
  _ZN3rml11pool_createElPKNS_13MemPoolPolicyE at Base 2017~U7

After that, build fails at dh_shlibdeps step:

   dh_shlibdeps
dpkg-shlibdeps: error: cannot find library libtbbmalloc.so.2 needed by
debian/libtbbmalloc2/usr/lib/${DEB_HOST_MULTIARCH}/libtbbmalloc_proxy.so.2
(ELF format: 'elf64-x86-64' abi: '0201003e00000000'; RPATH: '')
dpkg-shlibdeps: error: cannot continue due to the error above
Note: libraries are not searched in other binary packages that do not
have any shlibs or symbols file.
To help dpkg-shlibdeps find private libraries, you might need to use -l.
dh_shlibdeps: error: dpkg-shlibdeps -Tdebian/libtbbmalloc2.substvars
debian/libtbbmalloc2/usr/lib/\${DEB_HOST_MULTIARCH}/libtbbmalloc.so.2
debian/libtbbmalloc2/usr/lib/\${DEB_HOST_MULTIARCH}/libtbbmalloc_proxy.so.2
returned exit code 2
dh_shlibdeps: error: Aborting due to earlier error
make: *** [debian/rules:49: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess returned exit
status 2

onetbb 2021.5.0-7 builds fine with onetbb.diff in sid chroot.

Best,
Andrius