Question

R中有一个名为pf的函数，来源为here。

我试图通过emscripten将此功能转换为JavaScript。我这样调用：

emcc -s EXPORTED_FUNCTIONS="['pf']" nmath/pf.c \
-Ignuwin32/fixed/h/ \
-I/usr/local/Cellar/r/3.1.1/include/ \
-I/usr/local/Cellar/r/3.1.1/R.framework/Versions/3.1/Resources/include/

我收到警告：

WARNING  root: function requested to be exported, but not implemented: "pf"

并且输出js中没有pf的提示。为什么这个功能＆＃34;没有实现＆＃34;根据emcc？

编辑（根据zakki的答案，它应该是_pf -s EXPORTED_FUNCTIONS="['_pf']"，但问题仍然存在）：

有关于绝对包含路径的事先警告。但是，我假设可以忽略它？也许它至关重要：

emcc -s EXPORTED_FUNCTIONS="['_pf']" nmath/pf.c -Ignuwin32/fixed/h/ -I/usr/local/Cellar/r/3.1.1/include/ -I/usr/local/Cellar/r/3.1.1/R.framework/Versions/3.1/Resources/include/

WARNING  root: -I or -L of an absolute path "-I/usr/local/Cellar/r/3.1.1/include/" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
WARNING  root: function requested to be exported, but not implemented: "_pf"

如果我尝试其他方法，按照here所述添加EMSCRIPTEN_KEEPALIVE，我会得到：

emcc nmath/pf.c -Ignuwin32/fixed/h/ -I/usr/local/Cellar/r/3.1.1/include/ -I/usr/local/Cellar/r/3.1.1/R.framework/Versions/3.1/Resources/include/  

WARNING  root: -I or -L of an absolute path "-I/usr/local/Cellar/r/3.1.1/include/" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
nmath/pf.c:28:28: error: expected ';' after top level declarator
double EMSCRIPTEN_KEEPALIVE pf(double x, double df1, double df2, int lower_tail, int log_p)
                           ^
                           ;
1 error generated.
ERROR    root: compiler frontend failed to generate LLVM bitcode, halting

Answer 1

添加＆＃39; _＆＃39;功能名称。

-s EXPORTED_FUNCTIONS="['_pf']"

emscripten：＆＃34;要求导出的功能，但未实现＆＃34;

1 个答案: