pawel:bodb pawel$sudo gem install SystemTimer
Building native extensions.  This could take a while...
/Users/pawel/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/ext/builder.rb:48: warning: Insecure world writable dir /usr/local/bin in PATH,mode 040777
ERROR:  Error installing SystemTimer:
ERROR: Failed to build gem native extension.

/Users/pawel/.rvm/rubies/ruby-1.9.2-p290/bin/ruby extconf.rb
creating Makefile

make
/usr/bin/gcc-4.2 -I. -I/Users/pawel/.rvm/rubies/ruby-1.9.2-p290/include/ruby-1.9.1/x86_64-darwin10.3.0
-I/Users/pawel/.rvm/rubies/ruby-1.9.2-p290/include/ruby-1.9.1/ruby/backward -I/Users/pawel/.rvm/rubies/ruby-1.9.2-p290/include/ruby-1.9.1 -I.
-D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -fno-common -O3 -ggdb -Wextra -Wno-unused-parameter -Wno-parentheses -Wpointer-arith -Wwrite-strings -Wno-missing-field-initializers
-Wshorten-64-to-32 -Wno-long-long  -fno-common -pipe  -o system_timer_native.o -c system_timer_native.c
In file included from system_timer_native.c:8:
/Users/pawel/.rvm/rubies/ruby-1.9.2-p290/include/ruby-1.9.1/ruby/backward/rubysig.h:14:2: warning: #warning rubysig.h is obsolete
system_timer_native.c: In function ‘install_first_timer_and_save_original_configuration’:
system_timer_native.c:46: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:53: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:57: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:62: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:65: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:69: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:82: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:89: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:96: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:101: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c: In function ‘install_next_timer’:
system_timer_native.c:112: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:119: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:123: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:130: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:136: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:143: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:146: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c: In function ‘restore_original_configuration’:
system_timer_native.c:157: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:160: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:168: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:170: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:172: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c: In function ‘restore_original_timer_interval’:
system_timer_native.c:190: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:192: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c: In function ‘restore_sigalrm_mask’:
system_timer_native.c:199: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:201: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c: In function ‘install_ruby_sigalrm_handler’:
system_timer_native.c:211: error: ‘rb_thread_critical’ undeclared (first use in this function)
system_timer_native.c:211: error: (Each undeclared identifier is reported only once
system_timer_native.c:211: error: for each function it appears in.)
system_timer_native.c: In function ‘restore_original_ruby_sigalrm_handler’:
system_timer_native.c:217: error: ‘rb_thread_critical’ undeclared (first use in this function)
system_timer_native.c: In function ‘clear_pending_sigalrm_for_ruby_threads’:
system_timer_native.c:266: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c: In function ‘set_itimerval’:
system_timer_native.c:290: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:295: warning: implicit conversion shortens 64-bit value into a 32-bit value
system_timer_native.c:299: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
make: *** [system_timer_native.o] Error 1


Gem files will remain installed in /Users/pawel/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/SystemTimer-1.2.3 for inspection.
Results logged to /Users/pawel/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/SystemTimer-1.2.3/ext/system_timer/gem_make.out