Error when compiling kinematics
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06 Apr 2022 20:36 #239472
by LearningLinuxCNC
Error when compiling kinematics was created by LearningLinuxCNC
Good day,
I am compiling a kinematics module for a custom machine that has only B axis modifications to the kinematics. I am basing the kinematics module off of maxkins.c.
when compiling using
sudo halcompile --install xyzb-kins.c
I get an error. The error is in /usr/include/linuxcnc/rtapi.h:734:5 which is included in the xyzb-kins.c file.
the error is:
error: expected ‘,’ or ‘;’ before ‘char’
char rtapi_exported_##x[] = #x;
The code in the file at this location is:
What is the correct fix for this situation?
I am compiling a kinematics module for a custom machine that has only B axis modifications to the kinematics. I am basing the kinematics module off of maxkins.c.
when compiling using
sudo halcompile --install xyzb-kins.c
I get an error. The error is in /usr/include/linuxcnc/rtapi.h:734:5 which is included in the xyzb-kins.c file.
the error is:
error: expected ‘,’ or ‘;’ before ‘char’
char rtapi_exported_##x[] = #x;
The code in the file at this location is:
#define EXPORT_SYMBOL(x) __attribute__((section(".rtapi_export"))) \
char rtapi_exported_##x[] = #x;
#define EXPORT_SYMBOL_GPL(x) __attribute__((section(".rtapi_export"))) \
char rtapi_exported_##x[] = #x;What is the correct fix for this situation?
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07 Apr 2022 22:21 #239601
by andypugh
Replied by andypugh on topic Error when compiling kinematics
Which kernel are you uisng? I see that section of code in rtapi.h is wrapped in some ifdef statements.
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08 Apr 2022 11:31 #239651
by LearningLinuxCNC
Replied by LearningLinuxCNC on topic Error when compiling kinematics
Andy,
uname -r returns
4.19.0-11-rt-amd64
This is installed from the 2.8.0 iso
uname -r returns
4.19.0-11-rt-amd64
This is installed from the 2.8.0 iso
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09 Apr 2022 22:14 #239778
by andypugh
Replied by andypugh on topic Error when compiling kinematics
The syntax is something I am unfamiliar with, but:
gcc.gnu.org/onlinedocs/gcc/Variable-Attributes.html
suggests that attribute(( something)) is valid.
Is there any chance that you have introduced a windows-style line ending so that the continuation character is not being parsed properly?
gcc.gnu.org/onlinedocs/gcc/Variable-Attributes.html
suggests that attribute(( something)) is valid.
Is there any chance that you have introduced a windows-style line ending so that the continuation character is not being parsed properly?
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10 Apr 2022 22:22 #239866
by LearningLinuxCNC
Replied by LearningLinuxCNC on topic Error when compiling kinematics
I don't think so. I did not actually modify this file at all. That is the same syntax and the file was downloaded directly from the linuxcnc repository. I did not change it prior to the error showing up. This is strange indeed. I will try to download the file again and replace it.
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11 Apr 2022 19:34 #239961
by LearningLinuxCNC
Replied by LearningLinuxCNC on topic Error when compiling kinematics
The problem was not actually in rtapi.h
It was in the xyzb-kins.c file.
Thanks for your assistance Andy.
It was in the xyzb-kins.c file.
Compiling realtime xyzb-kins.c
xyzb-kins.c:89:1: warning: data definition has no type or storage class
KINS_NOT_SWITCHABLE
^~~~~~~~~~~~~~~~~~~
xyzb-kins.c:89:1: warning: type defaults to ‘int’ in declaration of ‘KINS_NOT_SWITCHABLE’ [-Wimplicit-int]
Thanks for your assistance Andy.
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03 Sep 2022 08:21 #251086
by LAUSCH
Replied by LAUSCH on topic Error when compiling kinematics
Hi,
Can you provide the solution to the problem? So what did you change in the code in order to make it run?
Can you provide the solution to the problem? So what did you change in the code in order to make it run?
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03 Sep 2022 12:32 #251102
by LearningLinuxCNC
Replied by LearningLinuxCNC on topic Error when compiling kinematics
The error in the file is that shown in the post above.
I did not need or use KINS_NOT_SWITCHABLE so this was the solution.
I did not need or use KINS_NOT_SWITCHABLE so this was the solution.
/*KINS_NOT_SWITCHABLE*/
The following user(s) said Thank You: LAUSCH
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