Quantlib-SWIG for Python 错误，MacOS Sierra 上缺少 Quantlib/quantlib_wrap.cpp

Question

我从 Sourceforge 下载了 Qauntlib-SWIG v1.9，还尝试了 github master 分支，按照 official page 上的说明进行操作，但在这两种情况下，我都会收到以下错误消息。

我正在运行 MacOS Sierra / Python 3.6 / boost 版本 1.64.0_1，gcc 以下版本。我用Homebrew 安装了quantlib v1.9.2。

$ gcc -v
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 8.1.0 (clang-802.0.42)
Target: x86_64-apple-darwin16.5.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

我怀疑错误是由下面的第一条语句引起的：python -c++ ... 它似乎不是 python 的有效标志，它给出了错误消息（在命令提示符下尝试了python -c++，得到了同样的错误） .

知道这个标志是如何/从哪里来的吗？谢谢。

错误信息：

(py36) me:QuantLib-SWIG $ make -C Python
python -c++ -modern -outdir QuantLib \
            -o QuantLib/quantlib_wrap.cpp ../SWIG/quantlib.i
  File "<string>", line 1
    ++
     ^
SyntaxError: invalid syntax
make: [QuantLib/quantlib_wrap.cpp] Error 1 (ignored)
python -c++ -modern -outdir QuantLib \
            -o QuantLib/quantlib_wrap.cpp ../SWIG/quantlib.i
  File "<string>", line 1
    ++
     ^
SyntaxError: invalid syntax
make: [QuantLib/QuantLib.py] Error 1 (ignored)
/Applications/Xcode.app/Contents/Developer/usr/bin/make  all-am
python -c++ -modern -outdir QuantLib \
            -o QuantLib/quantlib_wrap.cpp ../SWIG/quantlib.i
  File "<string>", line 1
    ++
     ^
SyntaxError: invalid syntax
make[1]: [QuantLib/quantlib_wrap.cpp] Error 1 (ignored)
python -c++ -modern -outdir QuantLib \
            -o QuantLib/quantlib_wrap.cpp ../SWIG/quantlib.i
  File "<string>", line 1
    ++
     ^
SyntaxError: invalid syntax
make[1]: [QuantLib/QuantLib.py] Error 1 (ignored)
CXXFLAGS="-O2 -stdlib=libstdc++ -mmacosx-version-min=10.6 -fno-strict-aliasing -Wno-unused -Wno-uninitialized -Wno-sign-compare -Wno-write-strings" CC="gcc" CXX="g++" /Users/me/anaconda/envs/py36/bin/python setup.py build
running build
running build_py
file QuantLib/QuantLib.py (for module QuantLib.QuantLib) not found
file QuantLib/QuantLib.py (for module QuantLib.QuantLib) not found
running build_ext
building 'QuantLib._QuantLib' extension
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Users/me/anaconda/envs/py36/include -arch x86_64 -I/Users/me/anaconda/envs/py36/include -arch x86_64 -I/Users/me/anaconda/envs/py36/include/python3.6m -I/usr/local/Cellar/quantlib/1.9.2/include -c QuantLib/quantlib_wrap.cpp -o build/temp.macosx-10.7-x86_64-3.6/QuantLib/quantlib_wrap.o -Wno-unused -O2 -stdlib=libstdc++ -mmacosx-version-min=10.6 -fno-strict-aliasing -Wno-unused -Wno-uninitialized -Wno-sign-compare -Wno-write-strings
clang: error: no such file or directory: 'QuantLib/quantlib_wrap.cpp'
clang: error: no input files
error: command 'gcc' failed with exit status 1
make[1]: *** [.build-stamp] Error 1
make: *** [all] Error 2
(py36) me:QuantLib-SWIG $ 

Answer 1

弄清楚为什么会这样。 Grepped Makefile。如果事实上它正在寻找 SWIG。所以brew install swig 解决了这个问题。

虽然官方安装网页说swig不是必须的，但最后还是需要的。