/usr/lib/x86_64-linux-gnu/libQt5Concurrent.prl is in qtbase5-dev 5.2.1+dfsg-1ubuntu14.3.
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1 2 3 4 5 6 | QMAKE_PRL_BUILD_DIR = /build/buildd/qtbase-opensource-src-5.2.1+dfsg/src/concurrent
QMAKE_PRO_INPUT = concurrent.pro
QMAKE_PRL_TARGET = libQt5Concurrent.so.5.2.1
QMAKE_PRL_CONFIG = lex yacc exceptions depend_includepath testcase_targets import_plugins import_qpa_plugin qt warn_on release link_prl incremental gdb_dwarf_index shared qpa no_mocdepend release qt_no_framework linux unix posix gcc compile_examples system-sqlite qpa largefile nostrip precompile_header sse2 sse3 ssse3 sse4_1 sse4_2 avx avx2 pcre use_libmysqlclient_r prefix_build force_independent create_prl link_prl prepare_docs qt_docs_targets no_private_qt_headers_warning QTDIR_build no_dll testcase_exceptions qt_example_installs warning_clean exceptions need_fwd_pri qt_install_module qt_install_headers qmake_cache target_qt create_cmake create_pc create_libtool explicitlib c++11 hide_symbols bsymbolic_functions have_target dll thread moc resources
QMAKE_PRL_VERSION = 5.2.1
QMAKE_PRL_LIBS = -L/usr/lib/x86_64-linux-gnu -lQt5Core -lpthread
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