Hello,
I just did some first testing with the new stable version 1.14.2 (Updating from
1.12.12) and noticed some regressions regarding the support of systemd-journal.
The compilation fails with:
make[5]: Entering directory
'/build/client/3.5.x/freedesktop/modemmanager/work/modemmanager/src'
CC mm-log.lo
In file included from
/build/client/3.5.x/systemd/_/include/systemd/sd-id128.h:23,
from
/build/client/3.5.x/systemd/_/include/systemd/sd-journal.h:26,
from mm-log.c:41:
/build/client/3.5.x/systemd/_/include/systemd/_sd-common.h:76:7: error:
"__STDC_VERSION__" is not defined, evaluates to 0 [-Werror=undef]
# if __STDC_VERSION__ >= 199901L
^~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
So it seems that the systemd (246) headers expect __STDC_VERSION__ to be
defined.
The compiler used is a gcc 8.3.0-6 from debian buster.
I found two ways to get rid of the problem:
1. Avoid the --std=gnu89 flag, this flags causes __STDC_VERSION__ not to be
defined. Maybe replacing it with c99.
2. Specify the option -Wno-error=undef to avoid aborting the build, leaving it
just a warning
Here some testing I did regarding the gnu89 flag:
$ gcc -E -dD --std=c99 foo.c|grep STDC_VERSION
#define __STDC_VERSION__ 199901L
$ gcc -E -dD --std=gnu89 foo.c|grep STDC_VERSION
$
What kind of patch should I provide to fix this problem?
Thanks,
Torsten
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