/usr/lib/x86_64-linux-gnu/pkgconfig/libtcmalloc.pc is in libgoogle-perftools-dev 2.5-2.2ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 | prefix=/usr
exec_prefix=${prefix}
libdir=${exec_prefix}/lib/x86_64-linux-gnu
includedir=${prefix}/include
Name: gperftools
Version: 2.5
Description: Performance tools for C++
URL: http://code.google.com/p/gperftools/
Requires:
Libs: -L${libdir} -ltcmalloc
Libs.private: -pthread -lpthread
Cflags: -I${includedir}
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