make problems with wakaama client

[yan0727]

this is operate report:

                [root@IoT-Apps lwm2m]# make
                [  2%] Building C object CMakeFiles/lwm2mclient.dir/object_test.c.o
                /opt/wakaama/examples/client/object_test.c: In function ‘get_test_object’:
                /opt/wakaama/examples/client/object_test.c:562:13: error: ‘for’ loop initial declarations are only allowed in C99 mode
                             for (int j = 0; j <= i; j++) {
                             ^
                /opt/wakaama/examples/client/object_test.c:562:13: note: use option -std=c99 or -std=gnu99 to compile your code
                make[2]: *** [CMakeFiles/lwm2mclient.dir/object_test.c.o] Error 1
                make[1]: *** [CMakeFiles/lwm2mclient.dir/all] Error 2
                make: *** [all] Error 2

[mlasch]

Hello @yan0727, can you be a bit more specific on which compiler you are using? I guess you are building with an old C-language version. You should use at least c99.
For reference, there is a discussion about which compiler versions are supported in Wakaama: #494

[yan0727]

@mlasch thanks for you reply, I'm using GCC version 4.8.5, support c99 mode, But I don't know why this is a problem.

[mlasch]

Indeed, GCC 4.8.5 seems to support c99, but does not default to c99. Have you tried to use -DCMAKE_C_STANDARD=99 to explicitly set the c language version?

[rettichschnidi]

Please reopen in case this is still a problem.