Início / computer / Perguntas / 1444368
Accepted
LuisMoncayo
Asked: 2019-06-04 05:35:49 +0800 CST

Rcpp não funciona no macOS, math.h não encontrado

  • 772

O pacote Rcpp não executa o R 3.6 MacOS Mojave.

Eu tenho o seguinte erro quando executo

Library(Rcpp)

evalCpp("2 + 2")

A saída é:

clang++ -std=gnu++11 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG   -I"/Library/Frameworks/R.framework/Versions/3.6/Resources/library/Rcpp/include" -I"/private/var/folders/h5/r7lh__p16wx7cg_5pzknfg5w0000gn/T/Rtmpz3QxlQ/sourceCpp-x86_64-apple-darwin15.6.0-1.0.1" -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/usr/local/include  -fPIC  -Wall -g -O2  -c file7d712a4a950.cpp -o file7d712a4a950.o
Error in sourceCpp(code = code, env = env, rebuild = rebuild, cacheDir = cacheDir,  : 
  Error 1 occurred building shared library.
clang: warning: no such sysroot directory: '/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk' [-Wmissing-sysroot]
In file included from file7d712a4a950.cpp:1:
In file included from /Library/Frameworks/R.framework/Versions/3.6/Resources/library/Rcpp/include/Rcpp.h:27:
In file included from /Library/Frameworks/R.framework/Versions/3.6/Resources/library/Rcpp/include/RcppCommon.h:29:
In file included from /Library/Frameworks/R.framework/Versions/3.6/Resources/library/Rcpp/include/Rcpp/r/headers.h:59:
In file included from /Library/Frameworks/R.framework/Versions/3.6/Resources/library/Rcpp/include/Rcpp/platform/compiler.h:100:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cmath:305:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/math.h:301:15: fatal error: 'math.h' file not found
#include_next <math.h>
              ^~~~~~~~
1 error generated.
make: *** [file7d712a4a950.o] Error 1
macos c++

2 respostas

  1. Outra solução que não requer a instalação forçada de cabeçalhos em sua localização antiga é informar ao R sua nova localização definindo as seguintes variáveis ​​em ~/.R/Makevars:

    CFLAGS=-isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk
CCFLAGS=-isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk
CXXFLAGS=-isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk

    Consulte https://thecoatlessprofessor.com/programming/cpp/r-compiler-tools-for-rcpp-on-macos/ .

    • 3
  2. Best Answer

    O macOS 10.14 não instala mais seus arquivos de cabeçalho no local antigo. Muitas instalações de terceiros são interrompidas, a menos que você execute:

    sudo installer -pkg \
/Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg \
-target /

    Veja também este problema do GitHub .

    Você deve repetir este comando ao atualizar R ou macOS (Xcode).

    • 1

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