From Brendan Heading:
You may be aware of the musl C-library implementation, which tries to
be strictly standards compliant, avoids non-standard extensions, etc.
Some distributions have adopted it as their standard C library, in
others (such as buildroot) it is a configuration alternative.
Vanilla lm-sensors does not compile under musl, due to the following
excerpt which appears in four different places. The code is checking
that the glibc version is greater than 2.0.
#if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ >= 0
#include <sys/io.h>
#else
#include <asm/io.h>
#endif
This fails under musl does not define __GLIBC__ (in fact, by design,
it doesn't provide any way to identify itself at all) - which causes
it to try to include <asm/io.h> rather than <sys/io.h>.
It's a long time since glibc 2.0.1 was released - 1997. Accordingly,
it seems to make little sense at this stage to try to retain
compatibility with very old libcs - so maybe it should be removed
entirely.
