current directory: c:/Ruby22/lib/ruby/gems/2.2.0/gems/clogger-2.0.2/ext/clogger_ext
c:/Ruby22/bin/ruby.exe -r ./siteconf20160725-8240-12azzw.rb extconf.rb
checking for ruby.h... yes
checking for fcntl.h... yes
checking for F_GETFL in fcntl.h... no
checking for O_NONBLOCK in unistd.h,fcntl.h... yes
checking for CLOCK_MONOTONIC in time.h... yes
checking for clockid_t in time.h... yes
checking for clock_gettime() in time.h... yes
checking for localtime_r() in time.h... yes
checking for gmtime_r() in time.h... yes
checking for struct tm.tm_gmtoff in time.h... no
checking for rb_str_set_len() in ruby.h... yes
checking for rb_thread_call_without_gvl() in ruby/thread.h... yes
checking for rb_thread_blocking_region() in ruby.h... no
checking for rb_thread_io_blocking_region() in ruby.h... yes
creating Makefile

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  c:/Ruby22/lib/ruby/gems/2.2.0/extensions/x86-mingw32/2.2.0/clogger-2.0.2/mkmf.log

current directory: c:/Ruby22/lib/ruby/gems/2.2.0/gems/clogger-2.0.2/ext/clogger_ext
make "DESTDIR=" clean

current directory: c:/Ruby22/lib/ruby/gems/2.2.0/gems/clogger-2.0.2/ext/clogger_ext
make "DESTDIR="
generating clogger_ext-i386-mingw32.def
compiling clogger.c
In file included from clogger.c:11:0:
c:\devkit4.7.2\mingw\bin\../lib/gcc/i686-w64-mingw32/4.7.2/../../../../i686-w64-mingw32/include/sys/time.h:42:13: error: conflicting types for 'gettimeofday'
In file included from c:/Ruby22/include/ruby-2.2.0/ruby/defines.h:163:0,
                 from c:/Ruby22/include/ruby-2.2.0/ruby/ruby.h:29,
                 from c:/Ruby22/include/ruby-2.2.0/ruby.h:33,
                 from clogger.c:1:
c:/Ruby22/include/ruby-2.2.0/ruby/win32.h:318:12: note: previous declaration of 'gettimeofday' was here
In file included from clogger.c:24:0:
blocking_helpers.h:57:0: warning: "stat" redefined [enabled by default]
In file included from c:/Ruby22/include/ruby-2.2.0/ruby/defines.h:163:0,
                 from c:/Ruby22/include/ruby-2.2.0/ruby/ruby.h:29,
                 from c:/Ruby22/include/ruby-2.2.0/ruby.h:33,
                 from clogger.c:1:
c:/Ruby22/include/ruby-2.2.0/ruby/win32.h:199:0: note: this is the location of the previous definition
clogger.c: In function 'to_path':
clogger.c:994:3: warning: passing argument 2 of 'fstati64' from incompatible pointer type [enabled by default]
In file included from c:/Ruby22/include/ruby-2.2.0/ruby/defines.h:163:0,
                 from c:/Ruby22/include/ruby-2.2.0/ruby/ruby.h:29,
                 from c:/Ruby22/include/ruby-2.2.0/ruby.h:33,
                 from clogger.c:1:
c:/Ruby22/include/ruby-2.2.0/ruby/win32.h:483:12: note: expected 'struct _stat64 *' but argument is of type 'struct stat *'
clogger.c:996:3: warning: passing argument 2 of 'my_stat' from incompatible pointer type [enabled by default]
In file included from clogger.c:24:0:
blocking_helpers.h:21:12: note: expected 'struct _stat64 *' but argument is of type 'struct stat *'
make: *** [clogger.o] Error 1

make failed, exit code 2