have_header: checking for unistd.h... -------------------- yes

"gcc -o conftest -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/x86_64-linux -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/ruby/backward -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0 -I.    -O3 -ggdb3 -Wall -Wextra -Wdeclaration-after-statement -Wdeprecated-declarations -Wduplicated-cond -Wimplicit-function-declaration -Wimplicit-int -Wmisleading-indentation -Wpointer-arith -Wrestrict -Wwrite-strings -Wimplicit-fallthrough=0 -Wmissing-noreturn -Wno-cast-function-type -Wno-constant-logical-operand -Wno-long-long -Wno-missing-field-initializers -Wno-overlength-strings -Wno-packed-bitfield-compat -Wno-parentheses-equality -Wno-self-assign -Wno-tautological-compare -Wno-unused-parameter -Wno-unused-value -Wsuggest-attribute=format -Wsuggest-attribute=noreturn -Wunused-variable  -fPIC conftest.c  -L. -L/usr/local/rvm/rubies/ruby-2.6.8/lib -Wl,-rpath,/usr/local/rvm/rubies/ruby-2.6.8/lib -L. -fstack-protector-strong -rdynamic -Wl,-export-dynamic     -Wl,-rpath,/usr/local/rvm/rubies/ruby-2.6.8/lib -L/usr/local/rvm/rubies/ruby-2.6.8/lib -lruby  -lm   -lc"
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: int main(int argc, char **argv)
4: {
5:   return 0;
6: }
/* end */

"gcc -E -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/x86_64-linux -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/ruby/backward -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0 -I.    -O3 -ggdb3 -Wall -Wextra -Wdeclaration-after-statement -Wdeprecated-declarations -Wduplicated-cond -Wimplicit-function-declaration -Wimplicit-int -Wmisleading-indentation -Wpointer-arith -Wrestrict -Wwrite-strings -Wimplicit-fallthrough=0 -Wmissing-noreturn -Wno-cast-function-type -Wno-constant-logical-operand -Wno-long-long -Wno-missing-field-initializers -Wno-overlength-strings -Wno-packed-bitfield-compat -Wno-parentheses-equality -Wno-self-assign -Wno-tautological-compare -Wno-unused-parameter -Wno-unused-value -Wsuggest-attribute=format -Wsuggest-attribute=noreturn -Wunused-variable  -fPIC  conftest.c -o conftest.i"
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <unistd.h>
/* end */

--------------------

have_header: checking for linux/aio_abi.h... -------------------- yes

"gcc -E -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/x86_64-linux -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/ruby/backward -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0 -I.    -O3 -ggdb3 -Wall -Wextra -Wdeclaration-after-statement -Wdeprecated-declarations -Wduplicated-cond -Wimplicit-function-declaration -Wimplicit-int -Wmisleading-indentation -Wpointer-arith -Wrestrict -Wwrite-strings -Wimplicit-fallthrough=0 -Wmissing-noreturn -Wno-cast-function-type -Wno-constant-logical-operand -Wno-long-long -Wno-missing-field-initializers -Wno-overlength-strings -Wno-packed-bitfield-compat -Wno-parentheses-equality -Wno-self-assign -Wno-tautological-compare -Wno-unused-parameter -Wno-unused-value -Wsuggest-attribute=format -Wsuggest-attribute=noreturn -Wunused-variable  -fPIC  conftest.c -o conftest.i"
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <linux/aio_abi.h>
/* end */

--------------------

have_header: checking for linux/io_uring.h... -------------------- yes

"gcc -E -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/x86_64-linux -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/ruby/backward -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0 -I.    -O3 -ggdb3 -Wall -Wextra -Wdeclaration-after-statement -Wdeprecated-declarations -Wduplicated-cond -Wimplicit-function-declaration -Wimplicit-int -Wmisleading-indentation -Wpointer-arith -Wrestrict -Wwrite-strings -Wimplicit-fallthrough=0 -Wmissing-noreturn -Wno-cast-function-type -Wno-constant-logical-operand -Wno-long-long -Wno-missing-field-initializers -Wno-overlength-strings -Wno-packed-bitfield-compat -Wno-parentheses-equality -Wno-self-assign -Wno-tautological-compare -Wno-unused-parameter -Wno-unused-value -Wsuggest-attribute=format -Wsuggest-attribute=noreturn -Wunused-variable  -fPIC  conftest.c -o conftest.i"
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <linux/io_uring.h>
/* end */

--------------------

have_header: checking for sys/select.h... -------------------- yes

"gcc -E -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/x86_64-linux -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/ruby/backward -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0 -I.    -O3 -ggdb3 -Wall -Wextra -Wdeclaration-after-statement -Wdeprecated-declarations -Wduplicated-cond -Wimplicit-function-declaration -Wimplicit-int -Wmisleading-indentation -Wpointer-arith -Wrestrict -Wwrite-strings -Wimplicit-fallthrough=0 -Wmissing-noreturn -Wno-cast-function-type -Wno-constant-logical-operand -Wno-long-long -Wno-missing-field-initializers -Wno-overlength-strings -Wno-packed-bitfield-compat -Wno-parentheses-equality -Wno-self-assign -Wno-tautological-compare -Wno-unused-parameter -Wno-unused-value -Wsuggest-attribute=format -Wsuggest-attribute=noreturn -Wunused-variable  -fPIC  conftest.c -o conftest.i"
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <sys/select.h>
/* end */

--------------------

have_type: checking for port_event_t in poll.h... -------------------- no

"gcc -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/x86_64-linux -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/ruby/backward -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0 -I.    -O3 -ggdb3 -Wall -Wextra -Wdeclaration-after-statement -Wdeprecated-declarations -Wduplicated-cond -Wimplicit-function-declaration -Wimplicit-int -Wmisleading-indentation -Wpointer-arith -Wrestrict -Wwrite-strings -Wimplicit-fallthrough=0 -Wmissing-noreturn -Wno-cast-function-type -Wno-constant-logical-operand -Wno-long-long -Wno-missing-field-initializers -Wno-overlength-strings -Wno-packed-bitfield-compat -Wno-parentheses-equality -Wno-self-assign -Wno-tautological-compare -Wno-unused-parameter -Wno-unused-value -Wsuggest-attribute=format -Wsuggest-attribute=noreturn -Wunused-variable  -fPIC   -c conftest.c"
conftest.c:6:9: error: unknown type name ‘port_event_t’
 typedef port_event_t conftest_type;
         ^~~~~~~~~~~~
cc1: warning: unrecognized command line option ‘-Wno-self-assign’
cc1: warning: unrecognized command line option ‘-Wno-parentheses-equality’
cc1: warning: unrecognized command line option ‘-Wno-constant-logical-operand’
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <poll.h>
4: 
5: /*top*/
6: typedef port_event_t conftest_type;
7: int conftestval[sizeof(conftest_type)?1:-1];
/* end */

--------------------

have_header: checking for sys/epoll.h... -------------------- yes

"gcc -E -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/x86_64-linux -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/ruby/backward -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0 -I.    -O3 -ggdb3 -Wall -Wextra -Wdeclaration-after-statement -Wdeprecated-declarations -Wduplicated-cond -Wimplicit-function-declaration -Wimplicit-int -Wmisleading-indentation -Wpointer-arith -Wrestrict -Wwrite-strings -Wimplicit-fallthrough=0 -Wmissing-noreturn -Wno-cast-function-type -Wno-constant-logical-operand -Wno-long-long -Wno-missing-field-initializers -Wno-overlength-strings -Wno-packed-bitfield-compat -Wno-parentheses-equality -Wno-self-assign -Wno-tautological-compare -Wno-unused-parameter -Wno-unused-value -Wsuggest-attribute=format -Wsuggest-attribute=noreturn -Wunused-variable  -fPIC  conftest.c -o conftest.i"
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <sys/epoll.h>
/* end */

--------------------

have_header: checking for sys/event.h... -------------------- no

"gcc -E -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/x86_64-linux -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/ruby/backward -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0 -I.    -O3 -ggdb3 -Wall -Wextra -Wdeclaration-after-statement -Wdeprecated-declarations -Wduplicated-cond -Wimplicit-function-declaration -Wimplicit-int -Wmisleading-indentation -Wpointer-arith -Wrestrict -Wwrite-strings -Wimplicit-fallthrough=0 -Wmissing-noreturn -Wno-cast-function-type -Wno-constant-logical-operand -Wno-long-long -Wno-missing-field-initializers -Wno-overlength-strings -Wno-packed-bitfield-compat -Wno-parentheses-equality -Wno-self-assign -Wno-tautological-compare -Wno-unused-parameter -Wno-unused-value -Wsuggest-attribute=format -Wsuggest-attribute=noreturn -Wunused-variable  -fPIC  conftest.c -o conftest.i"
conftest.c:3:10: fatal error: sys/event.h: No such file or directory
 #include <sys/event.h>
          ^~~~~~~~~~~~~
compilation terminated.
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <sys/event.h>
/* end */

--------------------

have_type: checking for port_event_t in port.h... -------------------- no

"gcc -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/x86_64-linux -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/ruby/backward -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0 -I.    -O3 -ggdb3 -Wall -Wextra -Wdeclaration-after-statement -Wdeprecated-declarations -Wduplicated-cond -Wimplicit-function-declaration -Wimplicit-int -Wmisleading-indentation -Wpointer-arith -Wrestrict -Wwrite-strings -Wimplicit-fallthrough=0 -Wmissing-noreturn -Wno-cast-function-type -Wno-constant-logical-operand -Wno-long-long -Wno-missing-field-initializers -Wno-overlength-strings -Wno-packed-bitfield-compat -Wno-parentheses-equality -Wno-self-assign -Wno-tautological-compare -Wno-unused-parameter -Wno-unused-value -Wsuggest-attribute=format -Wsuggest-attribute=noreturn -Wunused-variable  -fPIC   -c conftest.c"
conftest.c:3:10: fatal error: port.h: No such file or directory
 #include <port.h>
          ^~~~~~~~
compilation terminated.
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <port.h>
4: 
5: /*top*/
6: typedef port_event_t conftest_type;
7: int conftestval[sizeof(conftest_type)?1:-1];
/* end */

--------------------

have_header: checking for sys/resource.h... -------------------- yes

"gcc -E -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/x86_64-linux -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0/ruby/backward -I/usr/local/rvm/rubies/ruby-2.6.8/include/ruby-2.6.0 -I.    -O3 -ggdb3 -Wall -Wextra -Wdeclaration-after-statement -Wdeprecated-declarations -Wduplicated-cond -Wimplicit-function-declaration -Wimplicit-int -Wmisleading-indentation -Wpointer-arith -Wrestrict -Wwrite-strings -Wimplicit-fallthrough=0 -Wmissing-noreturn -Wno-cast-function-type -Wno-constant-logical-operand -Wno-long-long -Wno-missing-field-initializers -Wno-overlength-strings -Wno-packed-bitfield-compat -Wno-parentheses-equality -Wno-self-assign -Wno-tautological-compare -Wno-unused-parameter -Wno-unused-value -Wsuggest-attribute=format -Wsuggest-attribute=noreturn -Wunused-variable  -fPIC  conftest.c -o conftest.i"
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <sys/resource.h>
/* end */

--------------------