~/Gearman-XS-0.15$ perl Makefile.PL 
include Gearman-XS-0.15/inc/Module/Install.pm
include inc/Module/Install/Metadata.pm
include inc/Module/Install/Base.pm
include inc/Module/Install/Makefile.pm
include inc/Module/Install/Can.pm
include inc/Module/Install/Compiler.pm
include inc/Module/Install/WriteAll.pm
include inc/Module/Install/Win32.pm
include inc/Module/Install/Fetch.pm
Generating a GNU-style Makefile
Writing Makefile for Gearman::XS
Writing MYMETA.yml and MYMETA.json
Writing META.yml
~/Gearman-XS-0.15$ make 
Skip blib/lib/Gearman/XS/Client.pm (unchanged)
Skip blib/lib/Gearman/XS.pm (unchanged)
Skip blib/lib/Gearman/XS/Job.pm (unchanged)
Skip blib/lib/Gearman/XS/Worker.pm (unchanged)
Skip blib/lib/Gearman/XS/Task.pm (unchanged)
cc -c   -Wall -Wundef -Wno-shadow -Wmissing-prototypes -fdiagnostics-show-option -Wformat=2 -Wstrict-aliasing -Wextra -Wmissing-declarations -Wcast-align -Wswitch-default -Wswitch-enum -Wno-undef -Wno-unused-value -Wno-unused-variable -Wno-unused-parameter -Wno-format-invalid-specifier -O2 -g   -DVERSION=\"0.15\" -DXS_VERSION=\"0.15\" -fPIC "-I/usr/lib/perl/5.10/CORE"   XS.c
In file included from XS.xs:11:
gearman_xs.h:18:36: error: libgearman-1.0/gearman.h: No such file or directory
XS.c: In function ‘XS_Gearman__XS_strerror’:
XS.c:134: error: ‘gearman_return_t’ undeclared (first use in this function)
XS.c:134: error: (Each undeclared identifier is reported only once
XS.c:134: error: for each function it appears in.)
XS.c:134: error: expected ‘;’ before ‘rc’
XS.xs:82: warning: implicit declaration of function ‘gearman_strerror’ [-Wimplicit-function-declaration]
XS.xs:82: error: ‘rc’ undeclared (first use in this function)
At top level:
cc1: warning: unrecognized command line option "-Wno-format-invalid-specifier"
make: *** [XS.o] Error 1