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Build Failure "error: ‘cap_value_t’ was not declared in this scope"
Hi all,
I followed the instructions on this page but still met the following errors, which said some data types in libcap2 were not declared. My environment is
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 19.10
Release: 19.10
Codename: eoan
$ g++ --version
g++ (Ubuntu 7.5.0-3ubuntu1~19.10) 7.5.0
$ gcc --version
gcc (Ubuntu 7.5.0-3ubuntu1~19.10) 7.5.0
$ dpkg -l | grep libcap
ii libcap-dev:amd64 1:2.25-2 amd64 POSIX 1003.1e capabilities (development)
ii libcap-ng0:amd64 0.7.9-2 amd64 An alternate POSIX capabilities library
ii libcap2:amd64 1:2.25-2 amd64 POSIX 1003.1e capabilities (library)
ii libcap2-bin 1:2.25-2 amd64 POSIX 1003.1e capabilities (utilities)
Could anyone give me any advice? Thanks!
[ 81%] Building CXX object sql/CMakeFiles/sql.dir/mysqld.cc.o
In file included from /home/haoyu/mysql-5.6/libmysqld/lib_sql.cc:30:0:
/home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc:4118:33: error: ‘cap_value_t’ was not declared in this scope
static bool set_capability_flag(cap_value_t capability, cap_flag_value_t flag)
^~~~~~~~~~~
/home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc:4118:33: note: suggested alternative: ‘si_value’
static bool set_capability_flag(cap_value_t capability, cap_flag_value_t flag)
^~~~~~~~~~~
si_value
/home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc:4118:57: error: ‘cap_flag_value_t’ was not declared in this scope
static bool set_capability_flag(cap_value_t capability, cap_flag_value_t flag)
^~~~~~~~~~~~~~~~
/home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc:4118:78: error: expression list treated as compound expression in initializer [-fpermissive]
static bool set_capability_flag(cap_value_t capability, cap_flag_value_t flag)
^
/home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc:4141:32: error: ‘cap_value_t’ was not declared in this scope
static bool acquire_capability(cap_value_t capability)
^~~~~~~~~~~
/home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc:4141:32: note: suggested alternative: ‘si_value’
static bool acquire_capability(cap_value_t capability)
^~~~~~~~~~~
si_value
/home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc:4146:29: error: ‘cap_value_t’ was not declared in this scope
static bool drop_capability(cap_value_t capability)
^~~~~~~~~~~
/home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc:4146:29: note: suggested alternative: ‘si_value’
static bool drop_capability(cap_value_t capability)
^~~~~~~~~~~
si_value
/home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc: In function ‘bool set_system_thread_priority(pid_t, int)’:
/home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc:4165:22: error: ‘CAP_SYS_NICE’ was not declared in this scope
acquire_capability(CAP_SYS_NICE);
^~~~~~~~~~~~
/home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc:4165:22: note: suggested alternative: ‘MAP_SYNC’
acquire_capability(CAP_SYS_NICE);
^~~~~~~~~~~~
MAP_SYNC
/home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc:4165:34: error: ‘acquire_capability’ cannot be used as a function
acquire_capability(CAP_SYS_NICE);
^
/home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc:4170:31: error: ‘drop_capability’ cannot be used as a function
drop_capability(CAP_SYS_NICE);
^
/home/haoyu/mysql-5.6/sql/mysqld.cc:4118:33: error: ‘cap_value_t’ was not declared in this scope
static bool set_capability_flag(cap_value_t capability, cap_flag_value_t flag)
^~~~~~~~~~~
/home/haoyu/mysql-5.6/sql/mysqld.cc:4118:33: note: suggested alternative: ‘si_value’
static bool set_capability_flag(cap_value_t capability, cap_flag_value_t flag)
^~~~~~~~~~~
si_value
/home/haoyu/mysql-5.6/sql/mysqld.cc:4118:57: error: ‘cap_flag_value_t’ was not declared in this scope
static bool set_capability_flag(cap_value_t capability, cap_flag_value_t flag)
^~~~~~~~~~~~~~~~
/home/haoyu/mysql-5.6/sql/mysqld.cc:4118:78: error: expression list treated as compound expression in initializer [-fpermissive]
static bool set_capability_flag(cap_value_t capability, cap_flag_value_t flag)
^
/home/haoyu/mysql-5.6/sql/mysqld.cc:4141:32: error: ‘cap_value_t’ was not declared in this scope
static bool acquire_capability(cap_value_t capability)
^~~~~~~~~~~
/home/haoyu/mysql-5.6/sql/mysqld.cc:4141:32: note: suggested alternative: ‘si_value’
static bool acquire_capability(cap_value_t capability)
^~~~~~~~~~~
si_value
/home/haoyu/mysql-5.6/sql/mysqld.cc:4146:29: error: ‘cap_value_t’ was not declared in this scope
static bool drop_capability(cap_value_t capability)
^~~~~~~~~~~
/home/haoyu/mysql-5.6/sql/mysqld.cc:4146:29: note: suggested alternative: ‘si_value’
static bool drop_capability(cap_value_t capability)
^~~~~~~~~~~
si_value
/home/haoyu/mysql-5.6/sql/mysqld.cc: In function ‘bool set_system_thread_priority(pid_t, int)’:
/home/haoyu/mysql-5.6/sql/mysqld.cc:4165:22: error: ‘CAP_SYS_NICE’ was not declared in this scope
acquire_capability(CAP_SYS_NICE);
^~~~~~~~~~~~
/home/haoyu/mysql-5.6/sql/mysqld.cc:4165:22: note: suggested alternative: ‘MAP_SYNC’
acquire_capability(CAP_SYS_NICE);
^~~~~~~~~~~~
MAP_SYNC
/home/haoyu/mysql-5.6/sql/mysqld.cc:4165:34: error: ‘acquire_capability’ cannot be used as a function
acquire_capability(CAP_SYS_NICE);
^
/home/haoyu/mysql-5.6/sql/mysqld.cc:4170:31: error: ‘drop_capability’ cannot be used as a function
drop_capability(CAP_SYS_NICE);
^
In file included from /home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc:27:0,
from /home/haoyu/mysql-5.6/libmysqld/lib_sql.cc:30:
/home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc: In function ‘my_bool mysqld_get_one_option(int, const my_option*, char*)’:
/home/haoyu/mysql-5.6/libmysqld/../sql/sql_priv.h:47:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
if (((THD *) Thd) != NULL) \
^
/home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc:11528:5: note: in expansion of macro ‘WARN_DEPRECATED’
WARN_DEPRECATED(NULL, "--language/-l", "'--lc-messages-dir'");
^
In file included from /home/haoyu/mysql-5.6/libmysqld/lib_sql.cc:30:0:
/home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc:11530:3: note: here
case OPT_LC_MESSAGES_DIRECTORY:
^~~~
In file included from /home/haoyu/mysql-5.6/libmysqld/lib_sql.cc:30:0:
/home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc: At global scope:
/home/haoyu/mysql-5.6/libmysqld/../sql/mysqld.cc:4118:13: warning: ‘set_capability_flag’ defined but not used [-Wunused-variable]
static bool set_capability_flag(cap_value_t capability, cap_flag_value_t flag)
^~~~~~~~~~~~~~~~~~~
make[2]: *** [libmysqld/CMakeFiles/sql_embedded.dir/build.make:76: libmysqld/CMakeFiles/sql_embedded.dir/lib_sql.cc.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:5966: libmysqld/CMakeFiles/sql_embedded.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
In file included from /home/haoyu/mysql-5.6/sql/mysqld.cc:27:0:
/home/haoyu/mysql-5.6/sql/mysqld.cc: In function ‘my_bool mysqld_get_one_option(int, const my_option*, char*)’:
/home/haoyu/mysql-5.6/sql/sql_priv.h:47:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
if (((THD *) Thd) != NULL) \
^
/home/haoyu/mysql-5.6/sql/mysqld.cc:11528:5: note: in expansion of macro ‘WARN_DEPRECATED’
WARN_DEPRECATED(NULL, "--language/-l", "'--lc-messages-dir'");
^
/home/haoyu/mysql-5.6/sql/mysqld.cc:11530:3: note: here
case OPT_LC_MESSAGES_DIRECTORY:
^~~~
/home/haoyu/mysql-5.6/sql/mysqld.cc: At global scope:
/home/haoyu/mysql-5.6/sql/mysqld.cc:4118:13: warning: ‘set_capability_flag’ defined but not used [-Wunused-variable]
static bool set_capability_flag(cap_value_t capability, cap_flag_value_t flag)
^~~~~~~~~~~~~~~~~~~
make[2]: *** [sql/CMakeFiles/sql.dir/build.make:2217: sql/CMakeFiles/sql.dir/mysqld.cc.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:5541: sql/CMakeFiles/sql.dir/all] Error 2
make: *** [Makefile:163: all] Error 2
Which branch did you compile？
Hi Xiaolong,
I compiled the branch fb-mysql-5.6.35 at commit 156f5ef2fcc56793c6b23d86c3d3bb4e34cff6a2.
~/mysql-5.6$ git branch
* fb-mysql-5.6.35
~/mysql-5.6$ git log
commit 156f5ef2fcc56793c6b23d86c3d3bb4e34cff6a2 (HEAD -> fb-mysql-5.6.35, origin/fb-mysql-5.6.35, origin/HEAD)
Author: Mohamed Zait <[email protected]>
Date: Wed Sep 16 22:50:07 2020 -0700
Add a new information schema table, WRITE_STATISTICS_HISTOGRAM,
Summary:
Add a new information schema table, WRITE_STATISTICS_HISTOGRAM,
to display statistics about write throughput in the form of a
histogram distribution, see https://fb.quip.com/JRbyA0L7RNyG
Reviewed By: satya-valluri
Differential Revision: D23756119
fbshipit-source-id: fee13975dcf
Maybe it is a problem with the gcc version. http://myrocks.io/docs/getting-started/
Problem arrived via f912b385d74f from Sagar. In mysqld.cc, including sys/capability.h is protected by "#ifdef HAVE_SYS_CAPABILITY_H" but the use of capabilities isn't protected by the ifdef. See:
- https://github.com/facebook/mysql-5.6/blob/fb-mysql-5.6.35/sql/mysqld.cc#L202
- https://github.com/facebook/mysql-5.6/blob/fb-mysql-5.6.35/sql/mysqld.cc#L4189
Workaround for Ubuntu 20 might. be "apt-get install libcap-dev"
I encountered this again... My OS: Ubuntu 18.04.6 LTS GCC: 7.5.0
I tried "apt-get install libcap-dev". It still had the same output after I remove cmake files and "make clean" After that, my friend made it work by removing the whole repository and cloning it again.
Maybe this hint, "apt-get install libcap-dev", can be added to the wiki, for the new version of Ubuntu.
