I am trying to setup Dhrystone where I am getting the following error.
error: ‘HZ’ undeclared (first use in this function)
I don't the significance of HZ variable. I can compile the code straightaway by commenting the code which includes HZ variable. But is it the right way to do. Please help me in this regard.
Related
When I compile the extension I've got, I'm getting
error: ‘work_mem’ undeclared (first use in this function)
17 | Tuplestorestate *tupstore = tuplestore_begin_heap(true, false, work_mem);
What header includes work_mem?
The work_mem symbol is provided by misadmin.h you will have to add that header into your .c file.
#include "miscadmin.h"
I am working on Red Hat 6 with kernal version 2.6.32 , I am trying build glib 2.5 on my machine. And fail with following error:-
Log:-
../../gio/gfile.c: In function ‘splice_stream_with_progress’:
../../gio/gfile.c:3019: error: ‘F_SETPIPE_SZ’ undeclared (first use in this function)
../../gio/gfile.c:3019: error: (Each undeclared identifier is reported only once
../../gio/gfile.c:3019: error: for each function it appears in.)
../../gio/gfile.c:3023: error: ‘F_GETPIPE_SZ’ undeclared (first use in this function)
make[4]: *** [libgio_2_0_la-gfile.lo] Error 1
I can find the solution of at F_SETPIPE_SZ undeclared , placing #define _GNU_SOURCE before all includes in file gfile.c, But it didn't work. As mentioned in second answer: Older kernels (e.g. 2.6.32 as used in RHEL6) don't have them and we need bypass it in whatever you're building. How could we do that?
Appreciate your help .
Thanks in Advance.
The bug is fixed in this commit.
architectures without F_SETPIPE_SZ and F_GETPIPE_SZ such as or1k.
If those variables are undefined, put back previous behavior, buffer
size set to 1024 * 64
https://gitlab.gnome.org/GNOME/glib/-/commit/0beb62f564072f3585762c9c55fe894485993b62
You can apply the patch to your code.
I am working on a server. I have included the http-parser.h header file and used their code for how to use it. However, when I compile I get the following errors:
'my_url_callback' undeclared
'my_header_field_callback' undeclared
'my_socket' undeclared
I assumed that these were defined in the header file. Apparently, I was mistaken. How should I declare these?
I am using timerfd mechanism, and getting this error on compilation: error:TFD_NONBLOCK' undeclared (first use in this function)`
How to resolve?
Here is the statement:
timer_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK);
Looks like timerfd support is missing from libc. sys/timerfd.h is absent. Any workarounds for this?
To use timerfd_create(), you need to run Linux 2.6.25 (or higher) with glibc 2.8 (or higher).
I have an old C program (which I didn't write) which worked for me before on a machine I had using DJGPP with RHIDE under DOS.
The problem is, that since I've moved to a new machine, when I try and compile it, I get loads (100s) of "'variable' undeclared (first use in this function)" warnings.
I don't have the time to go back over this and amend the code at the minute... is there a way to disable this warning and let me build?
Thanks for any help.
EDIT:
Sorry guys, this isn't my area at all. The following code:
char *sbname;
sbname = calloc (99, sizeof(char));
The second line produces an error of:
Error: 'sbname' undeclared (first use in this function)
This hadn't produced any errors on the last machine, so I assumed there is a setup issue.
Thanks