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[shujingwang <question707783@xxxxxxxxxxxxxxxxxxxxx>]

New question #707783 on rohc:
https://answers.launchpad.net/rohc/+question/707783

I encountered an error when trying to install Rohc to Ubuntu 20.04 kernel version 5.15：
Making all in linux
make[2]: 进入目录“/data/work/tmp/rohc/linux”
make -C /lib/modules/5.15.98/build M=/data/work/tmp/rohc/linux/kmod
make[3]: 进入目录“/usr/src/linux-5.15.98”
  CC [M]  /data/work/tmp/rohc/linux/kmod/../kmod.o
  LD [M]  /data/work/tmp/rohc/linux/kmod/rohc.o
  CC [M]  /data/work/tmp/rohc/linux/kmod/../kmod_test.o
/data/work/tmp/rohc/linux/kmod/../kmod_test.c: In function ‘rohc_proc_init’:
/data/work/tmp/rohc/linux/kmod/../kmod_test.c:992:14: error: passing argument 4 of ‘proc_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
  992 |        NULL, &rohc_proc_comp_in_fops);
      |              ^~~~~~~~~~~~~~~~~~~~~~~
      |              |
      |              const struct file_operations *
In file included from /data/work/tmp/rohc/linux/kmod/../kmod_test.c:31:
./include/linux/proc_fs.h:110:24: note: expected ‘const struct proc_ops *’ but argument is of type ‘const struct file_operations *’
  110 | struct proc_dir_entry *proc_create(const char *name, umode_t mode, struct proc_dir_entry *parent, const struct proc_ops *proc_ops);
      |                        ^~~~~~~~~~~
/data/work/tmp/rohc/linux/kmod/../kmod_test.c:1001:14: error: passing argument 4 of ‘proc_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
 1001 |        NULL, &rohc_proc_comp_out_fops);
      |              ^~~~~~~~~~~~~~~~~~~~~~~~
      |              |
      |              const struct file_operations *
In file included from /data/work/tmp/rohc/linux/kmod/../kmod_test.c:31:
./include/linux/proc_fs.h:110:24: note: expected ‘const struct proc_ops *’ but argument is of type ‘const struct file_operations *’
  110 | struct proc_dir_entry *proc_create(const char *name, umode_t mode, struct proc_dir_entry *parent, const struct proc_ops *proc_ops);
      |                        ^~~~~~~~~~~
/data/work/tmp/rohc/linux/kmod/../kmod_test.c:1010:14: error: passing argument 4 of ‘proc_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
 1010 |        NULL, &rohc_proc_decomp_in_fops);
      |              ^~~~~~~~~~~~~~~~~~~~~~~~~
      |              |
      |              const struct file_operations *
In file included from /data/work/tmp/rohc/linux/kmod/../kmod_test.c:31:
./include/linux/proc_fs.h:110:24: note: expected ‘const struct proc_ops *’ but argument is of type ‘const struct file_operations *’
  110 | struct proc_dir_entry *proc_create(const char *name, umode_t mode, struct proc_dir_entry *parent, const struct proc_ops *proc_ops);
      |                        ^~~~~~~~~~~
/data/work/tmp/rohc/linux/kmod/../kmod_test.c:1019:14: error: passing argument 4 of ‘proc_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
 1019 |        NULL, &rohc_proc_decomp_out_fops);
      |              ^~~~~~~~~~~~~~~~~~~~~~~~~~
      |              |
      |              const struct file_operations *
In file included from /data/work/tmp/rohc/linux/kmod/../kmod_test.c:31:
./include/linux/proc_fs.h:110:24: note: expected ‘const struct proc_ops *’ but argument is of type ‘const struct file_operations *’
  110 | struct proc_dir_entry *proc_create(const char *name, umode_t mode, struct proc_dir_entry *parent, const struct proc_ops *proc_ops);
      |                        ^~~~~~~~~~~
cc1: some warnings being treated as errors
make[4]: *** [scripts/Makefile.build:289：/data/work/tmp/rohc/linux/kmod/../kmod_test.o] 错误 1
make[3]: *** [Makefile:1903：/data/work/tmp/rohc/linux/kmod] 错误 2
make[3]: 离开目录“/usr/src/linux-5.15.98”
make[2]: *** [Makefile:483：all] 错误 2
make[2]: 离开目录“/data/work/tmp/rohc/linux”
make[1]: *** [Makefile:732：all-recursive] 错误 1
make[1]: 离开目录“/data/work/tmp/rohc”
make: *** [Makefile:617：all] 错误 2




I have resolved the issue with reference to https://stackoverflow.com/questions/61295277/passing-argument-4-of-proc-create-from-incompatible-pointer-type, but I have encountered new issues:

make[3]: 进入目录“/usr/src/linux-5.15.98”
  CC [M]  /data/work/tmp/rohc/linux/kmod/../kmod.o
  LD [M]  /data/work/tmp/rohc/linux/kmod/rohc.o
  MODPOST /data/work/tmp/rohc/linux/kmod/Module.symvers
ERROR: modpost: "rohc_buf_is_empty" [/data/work/tmp/rohc/linux/kmod/rohc] is a static EXPORT_SYMBOL_GPL
ERROR: modpost: "rohc_buf_is_malformed" [/data/work/tmp/rohc/linux/kmod/rohc] is a static EXPORT_SYMBOL_GPL
ERROR: modpost: "rohc_buf_append" [/data/work/tmp/rohc/linux/kmod/rohc] is a static EXPORT_SYMBOL_GPL
ERROR: modpost: "rohc_buf_avail_len" [/data/work/tmp/rohc/linux/kmod/rohc] is a static EXPORT_SYMBOL_GPL
ERROR: modpost: "rohc_buf_append_buf" [/data/work/tmp/rohc/linux/kmod/rohc] is a static EXPORT_SYMBOL_GPL
ERROR: modpost: "rohc_buf_push" [/data/work/tmp/rohc/linux/kmod/rohc] is a static EXPORT_SYMBOL_GPL
ERROR: modpost: "rohc_buf_data" [/data/work/tmp/rohc/linux/kmod/rohc] is a static EXPORT_SYMBOL_GPL
ERROR: modpost: "rohc_buf_data_at" [/data/work/tmp/rohc/linux/kmod/rohc] is a static EXPORT_SYMBOL_GPL
ERROR: modpost: "rohc_buf_prepend" [/data/work/tmp/rohc/linux/kmod/rohc] is a static EXPORT_SYMBOL_GPL
ERROR: modpost: "rohc_buf_reset" [/data/work/tmp/rohc/linux/kmod/rohc] is a static EXPORT_SYMBOL_GPL
ERROR: modpost: "rohc_buf_pull" [/data/work/tmp/rohc/linux/kmod/rohc] is a static EXPORT_SYMBOL_GPL
make[4]: *** [scripts/Makefile.modpost:133：/data/work/tmp/rohc/linux/kmod/Module.symvers] 错误 1
make[4]: *** 正在删除文件“/data/work/tmp/rohc/linux/kmod/Module.symvers”
make[3]: *** [Makefile:1818：modules] 错误 2
make[3]: 离开目录“/usr/src/linux-5.15.98”
make[2]: *** [Makefile:483：all] 错误 2
make[2]: 离开目录“/data/work/tmp/rohc/linux”
make[1]: *** [Makefile:732：all-recursive] 错误 1
make[1]: 离开目录“/data/work/tmp/rohc”
make: *** [Makefile:617：all] 错误 2




Did anyone tell me how to solve this problem？TKS



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