内联函数代码无法编译 [英] inline function code doesn't compile
问题描述
我正在尝试使用 inline 库.
I am trying to experiment with the inline library.
我尝试了 http://adv-r.had 给出的第一个例子.co.nz/C-interface.html
library(inline)
add <- cfunction(signature(a = "integer", b = "integer"), "
SEXP result;
PROTECT(result = allocVector(REALSXP, 1));
REAL(result)[0] = asReal(a) + asReal(b);
UNPROTECT(1);
return(result);
")
我收到以下错误:
Warning message:
running command 'make -f "C:/PROGRA~1/R/R-30~1.3/etc/x64/Makeconf" -f "C:/PROGRA~1/R/R-30~1.3/share/make/winshlib.mk" SHLIB_LDFLAGS='$(SHLIB_CXXLDFLAGS)' SHLIB_LD='$(SHLIB_CXXLD)' SHLIB="file21e05c17451a.dll" WIN=64 TCLBIN=64 OBJECTS="file21e05c17451a.o"' had status 127
ERROR(s) during compilation: source code errors or compiler configuration errors!
Program source:
1: #include <R.h>
2: #include <Rdefines.h>
3: #include <R_ext/Error.h>
4:
5:
6: extern "C" {
7: SEXP file21e05c17451a ( SEXP a, SEXP b );
8: }
9:
10: SEXP file21e05c17451a ( SEXP a, SEXP b ) {
11:
12: SEXP result;
13:
14: PROTECT(result = allocVector(REALSXP, 1));
15: REAL(result)[0] = asReal(a) + asReal(b);
16: UNPROTECT(1);
17:
18: return(result);
19:
20: warning("your C program does not return anything!");
21: return R_NilValue;
22: }
Error in compileCode(f, code, language, verbose) :
Compilation ERROR, function(s)/method(s) not created! Warning message:
running command 'make -f "C:/PROGRA~1/R/R-30~1.3/etc/x64/Makeconf" -f "C:/PROGRA~1/R/R-30~1.3/share/make/winshlib.mk" SHLIB_LDFLAGS='$(SHLIB_CXXLDFLAGS)' SHLIB_LD='$(SHLIB_CXXLD)' SHLIB="file21e05c17451a.dll" WIN=64 TCLBIN=64 OBJECTS="file21e05c17451a.o"' had status 127
In addition: Warning message:
running command 'C:/PROGRA~1/R/R-30~1.3/bin/x64/R CMD SHLIB file21e05c17451a.cpp 2> file21e05c17451a.cpp.err.txt' had status 1
我尝试了 Rcpp 包中的 evalCpp("2+2")，它给了我 4 作为答案.所以，我想编译器本身没有任何问题.这可能是什么问题?
I tried evalCpp("2+2") from the Rcpp package and it gave me 4 as the answer. So, I guess there isn't anything wrong with the compiler per se. What could be the issue here?
我运行的是 Windows 7.我的 sessionInfo 如下:
I'm running Windows 7. My sessionInfo is as follows:
R version 3.0.3 (2014-03-06)
Platform: x86_64-w64-mingw32/x64 (64-bit)
locale:
[1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C
[5] LC_TIME=English_United States.1252
attached base packages:
[1] compiler stats graphics grDevices utils datasets methods base
other attached packages:
[1] inline_0.3.13 stringr_0.6.2 rhdf5_2.6.0
[4] RcppRoll_0.1.0 RcppArmadillo_0.4.200.0 Rcpp_0.11.1
[7] data.table_1.9.2
loaded via a namespace (and not attached):
[1] plyr_1.8.1 reshape2_1.2.2 tools_3.0.3 zlibbioc_1.8.0
* 编辑 *
在另一台装有 Windows 7 的 PC 上尝试过，其中 R 安装在没有任何空格的目录中，并且最近安装了 R 3.1.0.所以这绝对不是因为 R 路径有空格.
Tried on another PC with Windows 7 where R is installed in a directory without any spaces and recently had R 3.1.0 installed. So it is definitely not due to the R path having spaces.
* 编辑 *
我终于得到了这份工作！需要将 Rtools 目录添加到 PATH.
I finally got this work! Needed to add the Rtools directories to PATH.
推荐答案
正如问题中所暗示的，您需要将两个目录添加到 Windows PATH 环境变量:
As hinted at in the question, you need to add two directories to the Windows PATH environment variable:
Rtools 可执行目录，可能在
C:\Rtools\bin.
gcc 可执行目录，可能在 C:\Rtools\gcc-4.6.3\bin.
The gcc executable directory, probably in C:\Rtools\gcc-4.6.3\bin.
您可能需要重新启动 Windows，R 才能看到新的 PATH.
You'll likely need to reboot Windows in order for R to be able to see the new PATH.
您可以只为当前 R 会话添加更新路径环境变量，使用类似:
You can add update the path environment variable for the current R session only, using something like:
rtools <- "C:\\Rtools\\bin"
gcc <- "C:\\Rtools\\gcc-4.6.3\\bin"
path <- strsplit(Sys.getenv("PATH"), ";")[[1]]
new_path <- c(rtools, gcc, path)
new_path <- new_path[!duplicated(tolower(new_path))]
Sys.setenv(PATH = paste(new_path, collapse = ";"))
这篇关于内联函数代码无法编译的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
