help please first module

[Rajesh Bhaskaran]

Yes the way comments are included within / ... / is wrong as there is an Asterisk after the / too . Compiler is not able to recognise the same.




via CloudMagic Email [https://cloudmagic.com/k/d/mailapp?ct=pa&cv=8.5.49&pv=6.0.1&source=email_footer_2] On Mon, Jul 25, 2016 at 11:48 PM, Mike Krinkin < krinkin.m.u at gmail.com [krinkin.m.u at gmail.com] > wrote:
On Mon, Jul 25, 2016 at 08:04:41PM +0200, hinawa wrote:
> hello i am starting to write modules and this code does not compile
>
> hello.c:
>
> /********************
>
> Modulo experimental
>
> ********************/*

Probably, error is in the line above.

>
> #include <linux/init.h>
> #include <linux/module.h>
> #include <linux/kernel.h>
>
> MODULE_LICENSE("GPL");
> MODULE_AUTHOR("Alberto Cerezo <ac90869 at gmail.com>");
> MODULE_DESCRIPTION("\"Hola Mundo\" Modulo experimental");
> MODULE_VERSION("printk");
>
> static int __init hola_init(void)
> {
> printk(KERN_INFO "Hola mundo\n");
> return 0;
> }
>
>
> static void __exit hola_exit(void)
> {
> printk(KERN_INFO "Adios, me marcho\n");
> }
>
> module_init(hola_init);
> module_exit(hola_exit);
>
>
> Makefile:
>
> obj-m += hello.o
>
> all:
> make -C /lib/modules/$(shell uname -r)/build M=${PWD} modules
> clean:
> make -C /lib/modules/$(shell uname -r)/build M=${PWD} clean
>
>
> error:
>
> In file included from
> /usr/src/linux-headers-4.6.0-1-common/include/linux/init.h:4:0,
> from
> /home/hinawa/Documentos/programasC/modulos/mod1/hello.c:9:
> /usr/src/linux-headers-4.6.0-1-common/include/linux/compiler.h:89:1:
> error: expected identifier or ‘(’ before ‘struct’
> struct ftrace_branch_data {
> ^
> make[4]: *** [/home/hinawa/Documentos/programasC/modulos/mod1/hello.o]
> Error 1
> make[3]: *** [_module_/home/hinawa/Documentos/programasC/modulos/mod1]
> Error 2
> make[2]: *** [sub-make] Error 2
> make[1]: *** [all] Error 2
> make: *** [all] Error 2
>
>
>
> I do not get to find the error because the code appears to be correct ...
>
> thks
>
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