Pessoal boa tarde, Estou tentando reproducir um código do livro sobre Rcpp e não estou conseguindo. Alguém tem alguma ideia de porque não funciona? (Trabalho com OS X 10.8.4). code <- ' #include <gsL/gsl_const_mksa.h> // decl of constants std::vector<double> volumes() { std::vector<double> v(5); v[0] = GSL_CONST_MKSA_US_GALLON; // 1 US gallon v[1] = GSL_CONST_MKSA_CANADIAN_GALLON; // 1 Canadian gallon v[2] = GSL_CONST_MKSA_UK_GALLON; // 1 UK gallon v[3] = GSL_CONST_MKSA_QUART; // 1 quart v[4] = GSL_CONST_MKSA_PINT; // 1 pint return v; }' gslVolumes <- cppFunction(code, depends="RcppGSL") mas aparece o seguinte erro file16e2b6cb966.cpp: In function ‘SEXPREC* sourceCpp_52966_volumes()’: file16e2b6cb966.cpp:30: error: ‘__result’ was not declared in this scope make: *** [file16e2b6cb966.o] Error 1 llvm-g++-4.2 -arch x86_64 -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG -I/usr/local/include -I/Library/Frameworks/R.framework/Versions/3.0/Resources/library/Rcpp/include -I/usr/local/include -I"/Library/Frameworks/R.framework/Versions/3.0/Resources/library/Rcpp/include" -I"/Library/Frameworks/R.framework/Versions/3.0/Resources/library/RcppGSL/include" -fPIC -mtune=core2 -g -O2 -c file16e2b6cb966.cpp -o file16e2b6cb966.o Erro em sourceCpp(code = code, env = env, rebuild = rebuild, showOutput = showOutput, : Error 1 occurred building shared library.