numba/npyufunc公司/omppool.cpp：5:10:致命错误：找不到“omp.h”文件

Question

专家们

我尝试在一个虚拟python环境中使用pip安装numba。我遇到了以下错误：

错误日志：

cc: numba/cuda/cudadrv/_extras.c
    cc -shared -lpthread -L/usr/local/lib -fstack-protector build/temp.freebsd-12.0-RELEASE-p2-amd64-3.6/numba/cuda/cudadrv/_extras.o -L/usr/local/lib -lpython3.6m -o build/lib.freebsd-12.0-RELEASE-p2-amd64-3.6/numba/cuda/cudadrv/_extras.so
    building 'numba.npyufunc.omppool' extension
    C compiler: cc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -O2 -pipe -fstack-protector -fno-strict-aliasing -fPIC

    compile options: '-I/home/russellb/py_devel/pyPlay/include -I/usr/local/include/python3.6m -c'
    extra options: '-fopenmp -std=c++11'
    cc: numba/npyufunc/omppool.cpp
    cc: numba/npyufunc/gufunc_scheduler.cpp
    numba/npyufunc/omppool.cpp:5:10: fatal error: 'omp.h' file not found
    #include <omp.h>
             ^~~~~~~
    1 error generated.
    numba/npyufunc/omppool.cpp:5:10: fatal error: 'omp.h' file not found
    #include <omp.h>
             ^~~~~~~
    1 error generated.
    error: Command "cc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -O2 -pipe -fstack-protector -fno-strict-aliasing -fPIC -I/home/russellb/py_devel/pyPlay/include -I/usr/local/include/python3.6m -c numba/npyufunc/omppool.cpp -o build/temp.freebsd-12.0-RELEASE-p2-amd64-3.6/numba/npyufunc/omppool.o -fopenmp -std=c++11" failed with exit status 1
error
Cleaning up...
  Removing source in /tmp/pip-install-g3ckpog3/numba
Removed build tracker '/tmp/pip-req-tracker-21vj3szg'
Command "/home/russellb/py_devel/pyPlay/bin/python3.6 -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-g3ckpog3/numba/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-record-lf_sxfnx/install-record.txt --single-version-externally-managed --compile --install-headers /home/russellb/py_devel/pyPlay/include/site/python3.6/numba" failed with error code 1 in /tmp/pip-install-g3ckpog3/numba/
Exception information:
Traceback (most recent call last):
  File "/home/russellb/py_devel/pyPlay/lib/python3.6/site-packages/pip/_internal/cli/base_command.py", line 143, in main
    status = self.run(options, args)
  File "/home/russellb/py_devel/pyPlay/lib/python3.6/site-packages/pip/_internal/commands/install.py", line 366, in run
    use_user_site=options.use_user_site,
  File "/home/russellb/py_devel/pyPlay/lib/python3.6/site-packages/pip/_internal/req/__init__.py", line 49, in install_given_reqs
    **kwargs
  File "/home/russellb/py_devel/pyPlay/lib/python3.6/site-packages/pip/_internal/req/req_install.py", line 791, in install
    spinner=spinner,
  File "/home/russellb/py_devel/pyPlay/lib/python3.6/site-packages/pip/_internal/utils/misc.py", line 705, in call_subprocess
    % (command_desc, proc.returncode, cwd))
pip._internal.exceptions.InstallationError: Command "/home/russellb/py_devel/pyPlay/bin/python3.6 -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-g3ckpog3/numba/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-record-lf_sxfnx/install-record.txt --single-version-externally-managed --compile --install-headers /home/russellb/py_devel/pyPlay/include/site/python3.6/numba" failed with error code 1 in /tmp/pip-install-g3ckpog3/numba/

但是omp.h存在于/usr/local/llvm70/lib/clang/7.0.1/include/omp.h中。在

如有任何帮助，排除/修复此问题，我们将不胜感激。我正在运行FreeBSD 12和{}。我将软链接llvm7作为默认设置，因为这方面的信息会有所帮助。在

我认为，makefile正在寻找omp.h的位置，而不是实际位置。如果是这样的话，有没有一种方法可以在pip安装期间将路径作为参数传递？在

随访： 按照@hoefling的建议设置CPPFLAGS确实解决了上述问题。但是，下一个错误如下：

^{2}$

我有两个alloca.h在以下位置：

/usr/src/contrib/ofed/libibverbs/alloca.h
/usr/src/cddl/compat/opensolaris/include/alloca.h

我不知道哪个才是正确的。在

谢谢你的努力。在

Answer 1

Linux

omp.h通常是gcc编译器的一部分，例如，在与之一起安装的Ubuntu上

$ sudo apt install libgcc-7-dev

FreeBSD

标头由devel/openmp提供。您可以安装：

^{pr2}$

这将把omp.h放入/usr/local/include，这应该是默认的include dirs。在

自定义包含

如果要在自定义include dir下附加头，请使用CPPFLAGS/CFLAGS环境变量：

$ CPPFLAGS="-I/usr/local/llvm70/lib/clang/7.0.1/include/" pip install numba

---

对于第二个错误，我认为numba不是在编写FreeBSD时考虑的（也不确定CUDA和FreeBSD是否在总体上表现良好）。可能是{a1}？我想^{}的补丁建议应该是

 #include <pthread.h>
 #include <unistd.h>
+#if !defined (__FreeBSD__)
 #include <alloca.h>
+#endif
 #define NUMBA_PTHREAD
 #endif

除此之外，尝试包括第二个（/usr/src/cddl/compat/opensolaris/include/alloca.h）。在