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LuisMoncayo
Asked: 2019-06-04 05:35:49 +0800 CST

Rcpp 不在 macOS 下，找不到 math.h

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Rcpp 包不运行 R 3.6 MacOS Mojave。

我运行时出现以下错误

Library(Rcpp)

evalCpp("2 + 2")

输出是：

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 个回答

  1. 另一种不需要在旧位置强制安装标头的解决方案是通过在中设置以下变量来告诉 R 它们的新位置~/.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

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

    • 3
  2. Best Answer

    macOS 10.14 不再将其头文件安装在旧位置。许多第三方安装会被破坏，除非你运行：

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

    另请参阅此 GitHub 问题。

    更新 R 或 macOS (Xcode) 时必须重复此命令。

    • 1

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