When building sysklogd on a uClibc system we must define _GNU_SOURCE to
get O_CLOEXEC.
Since _GNU_SOURCE is also required for asprintf() with GLIBC, as used by
the pidfile() replacement function, we drop it from there and rely on
AM_CPPFLAGS for all sources.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
- Drop weak bindings, use simple #define in compat.h instead
- No need to #ifdef sources with HAVE_foo, configure handles this for us
- Move utimensat() declaration to compat.h from pidfile.c to be consistent
With these changes we can let libsyslog link with the replacement objs,
just like syslogd and logger does. Because even if the C-library does
*not* have strlcpy() & C:o *and* an application has a local copy of any
of these APIs, our versions are prefixed with __ in the symbol table.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
The original idea with libcompat was to keep as few objects as
possible for linking with libsyslog. That in turn to prevent
a user of libsyslog from suddenly also getting strong binding
to symbols like strlcpy() from libsyslog, rather than their C
library of choice.
However, this caused strlcpy.c to be built as both .o and .lo
files, which in turn caused really bizarre build problems due
to bad DAG dependency.
This patch drops libcompat and instead marks all replacement APIs
as weak symbols, which a C library can override.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
The strlcat() and strlcpy() functions are only intended to be used
by syslog.c internally (and syslogd), when building libsyslog.
A user linking with libsyslog may have another library that provides
strlcat() or strlcpy() replacements. We must therefore mark ours as
weak functions so they can be overridden.
This patch also add a convenience library for libsyslog, to control
the build deps. for libsyslog. This is where external dependencies
should be addded (explicitly) when syslog.c is updated from NetBSD.
If you add new deps you likely want to mark them too as weak refs.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
- Import pidfile() v1.11 from OpenBSD and libite (-lite) project
- Import utimensat() replacement, for systems that don't have it
- Simplify syslogd and klogd program start and PID file creation
- Rip out -i and -I from klogd, uses old PID file functions, and
they're only kill(1) wrappers anyway
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
