Document dynamic bindings and assumed external configuration

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Benny Baumann 2020-12-19 23:08:57 +01:00 committed by BenBE
parent 9b8b380c32
commit 068561351f
1 changed files with 41 additions and 0 deletions

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@ -450,6 +450,47 @@ The executable file of the process as reported by the kernel. Requires CAP_SYS_P
.TP .TP
.B All other flags .B All other flags
Currently unsupported (always displays '-'). Currently unsupported (always displays '-').
.SH "EXTERNAL LIBRARIES"
While
.B htop
depends on most of the libraries it uses at build time there are two
noteworthy exceptions to this rule. These exceptions both relate to
data displayed in meters displayed in the header of
.B htop
and were intentionally created as optional runtime dependencies instead.
These exceptions are described below:
.TP
.B libsystemd
The bindings for libsystemd are used in the SystemD meter to determine
the number of active services and the overall system state. Looking for
the functions to determine these information at runtime allows for
builds to support these meters without forcing the package manager
to install these libraries on systems that otherwise don't use systemd.
Summary: no build time dependency, optional runtime dependency on
.B libsystemd
via dynamic loading, with
.B systemctl(1)
fallback.
.TP
.B libsensors
The bindings for libsensors are used for the CPU temperature readings
in the CPU usage meters if displaying the temperature is enabled through
the setup screen. In order for
.B htop
to show these temperatures correctly though, a proper configuration
of libsensors through its usual configuration files is assumed and that
all CPU cores correspond to temperature sensors from the
.B coretemp
driver with core 0 corresponding to a sensor labelled "Core 0". The
package temperature may be given as "Package id 0". If missing it is
inferred as the maximum value from the available per-core readings.
Summary: build time dependency on
.B libsensors(3)
C header files, optional runtime dependency on
.B libsensors(3)
via dynamic loading.
.SH "CONFIG FILE" .SH "CONFIG FILE"
By default By default
.B htop .B htop