/usr/lib/speech_tools/config/systems/ is in libestools2.1-dev 1:2.1~release-2build2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/speech_tools/config/systems/DebianGNULinux.mak
/usr/lib/speech_tools/config/systems/Linux.mak
/usr/lib/speech_tools/config/systems/Makefile
/usr/lib/speech_tools/config/systems/RedHatLinux.mak
/usr/lib/speech_tools/config/systems/alpha_Linux.mak
/usr/lib/speech_tools/config/systems/alpha_OSF1V4.0.mak
/usr/lib/speech_tools/config/systems/alpha_RedHatLinux.mak
/usr/lib/speech_tools/config/systems/default.mak
/usr/lib/speech_tools/config/systems/hp9000_HP-UX.mak
/usr/lib/speech_tools/config/systems/hp9000_HP-UXB.10.mak
/usr/lib/speech_tools/config/systems/ip_IRIX.mak
/usr/lib/speech_tools/config/systems/ip_IRIX5.3.mak
/usr/lib/speech_tools/config/systems/ip_IRIX6.3.mak
/usr/lib/speech_tools/config/systems/ip_IRIX6.4.mak
/usr/lib/speech_tools/config/systems/ip_IRIX646.4.mak
/usr/lib/speech_tools/config/systems/ix86_CYGWIN1.0.mak
/usr/lib/speech_tools/config/systems/ix86_CYGWIN1.1.mak
/usr/lib/speech_tools/config/systems/ix86_CYGWIN1.3.mak
/usr/lib/speech_tools/config/systems/ix86_CYGWIN1.4.mak
/usr/lib/speech_tools/config/systems/ix86_CYGWIN1.5.mak
/usr/lib/speech_tools/config/systems/ix86_CYGWIN1.7.mak
/usr/lib/speech_tools/config/systems/ix86_CYGWIN20.1.mak
/usr/lib/speech_tools/config/systems/ix86_CYGWIN32.mak
/usr/lib/speech_tools/config/systems/ix86_CYGWIN324.0.mak
/usr/lib/speech_tools/config/systems/ix86_Darwin.mak
/usr/lib/speech_tools/config/systems/ix86_FreeBSD.mak
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/usr/lib/speech_tools/config/systems/ix86_FreeBSD2.2.mak
/usr/lib/speech_tools/config/systems/ix86_FreeBSD3.0.mak
/usr/lib/speech_tools/config/systems/ix86_FreeBSD3.1.mak
/usr/lib/speech_tools/config/systems/ix86_FreeBSD3.2.mak
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/usr/lib/speech_tools/config/systems/ix86_FreeBSD4.0.mak
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/usr/lib/speech_tools/config/systems/ix86_RedHatLinux4.0.mak
/usr/lib/speech_tools/config/systems/ix86_RedHatLinux4.1.mak
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/usr/lib/speech_tools/config/systems/power_macintosh_Darwin.mak
/usr/lib/speech_tools/config/systems/rs6000_AIX4.1.mak
/usr/lib/speech_tools/config/systems/sparc_SunOS4.1.mak
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/usr/lib/speech_tools/config/systems/sparc_SunOS5.8.mak
/usr/lib/speech_tools/config/systems/sparc_SunOS5.9.mak
/usr/lib/speech_tools/config/systems/sparc_SunOS5.mak
/usr/lib/speech_tools/config/systems/sparc_unknown.mak
/usr/lib/speech_tools/config/systems/unknown_DebianGNULinux.mak
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/usr/lib/speech_tools/config/systems/unknown_RedHatLinux.mak
/usr/lib/speech_tools/config/systems/unknown_unknown.mak
/usr/lib/speech_tools/config/systems/x86_64_Darwin.mak