Warning: skipping dependency checks.
/private/tmp/luarocks_cqueues-20150907.51-0-6985/cqueues-rel-20150907/mk/vendor.cc: line 7: export: `-E': not a valid identifier
/private/tmp/luarocks_cqueues-20150907.51-0-6985/cqueues-rel-20150907/mk/vendor.cc: line 7: export: `-': not a valid identifier
luapath: export MACOSX_DEPLOYMENT_TARGET=10.8; gcc: command not found
luapath: export MACOSX_DEPLOYMENT_TARGET=10.8; gcc: command not found
luapath: export MACOSX_DEPLOYMENT_TARGET=10.8; gcc: command not found
Unable to find Lua 5.1 API headers (CPPFLAGS=)
make: *** [/private/tmp/luarocks_cqueues-20150907.51-0-6985/cqueues-rel-20150907/src/5.1/cqueues.o] Error 1

Error: Build error: Failed building.