我正在尝试开发一个应用程序，该应用程序要求我从PDF中读取文本，因此尝试安装python库pdftotext。我通过anaconda使用Mac OS和python。
我最初尝试使用pip install pdftotext，但是不断遇到类型为“错误：命令'gcc'失败，退出状态为1”的错误。对于Mac OS，我可以看到的唯一依赖性是pkg-config poppler，它是使用自制软件安装的。然后，我找到了使用命令“ brew cask install pdftotext”使用homebrew安装pdftotext的说明。此安装成功，但是当我尝试将其导入笔记本时，它告诉我没有名为pdftotext的模块。
Vishals-MacBook-Air:~ vishalpatel$ brew cask install pdftotext
Warning: Cask 'pdftotext' is already installed.
To re-install pdftotext, run:
brew cask reinstall pdftotext
Vishals-MacBook-Air:~ vishalpatel$ python -c 'import pdftotext'
Traceback (most recent call last):
File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'pdftotext'
Vishals-MacBook-Air:~ vishalpatel$ brew install pkg-config poppler
Warning: pkg-config 0.29.2 is already installed and up-to-date
To reinstall 0.29.2, run `brew reinstall pkg-config`
Warning: poppler 0.77.0 is already installed and up-to-date
To reinstall 0.77.0, run `brew reinstall poppler`
Vishals-MacBook-Air:~ vishalpatel$ pip install pdftotext
Collecting pdftotext
Using cached https://files.pythonhosted.org/packages/21/35/60094dbadd9de2035873390b1cac25e01da605844eba6a07a53a82fa4adc/pdftotext-2.1.1.tar.gz
Building wheels for collected packages: pdftotext
Building wheel for pdftotext (setup.py) ... error
ERROR: Complete output from command /Users/vishalpatel/anaconda3/bin/python -u -c 'import setuptools, tokenize;__file__='"'"'/private/var/folders/f1/wd32_gd10q58w4bdk8t5f1540000gn/T/pip-install-akx2k4vg/pdftotext/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /private/var/folders/f1/wd32_gd10q58w4bdk8t5f1540000gn/T/pip-wheel-_cbu4k4x --python-tag cp36:
ERROR: running bdist_wheel
running build
running build_ext
building 'pdftotext' extension
creating build
creating build/temp.macosx-10.7-x86_64-3.6
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Users/vishalpatel/anaconda3/include -arch x86_64 -I/Users/vishalpatel/anaconda3/include -arch x86_64 -DPOPPLER_CPP_AT_LEAST_0_30_0=1 -I/Users/vishalpatel/anaconda3/include/python3.6m -c pdftotext.cpp -o build/temp.macosx-10.7-x86_64-3.6/pdftotext.o -Wall -mmacosx-version-min=10.9
cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++ [enabled by default]
In file included from pdftotext.cpp:5:0:
/Users/vishalpatel/anaconda3/include/poppler/cpp/poppler-page.h:37:22: error: expected ‘,’ or ‘...’ before ‘&&’ token
text_box(text_box&&) = default;
^
/Users/vishalpatel/anaconda3/include/poppler/cpp/poppler-page.h:37:28: error: invalid constructor; you probably meant ‘poppler::text_box (const poppler::text_box&)’
text_box(text_box&&) = default;
^
/Users/vishalpatel/anaconda3/include/poppler/cpp/poppler-page.h:38:33: error: expected ‘,’ or ‘...’ before ‘&&’ token
text_box& operator=(text_box&&) = default;
^
/Users/vishalpatel/anaconda3/include/poppler/cpp/poppler-page.h:63:5: error: ‘unique_ptr’ in namespace ‘std’ does not name a type
std::unique_ptr<text_box_data> m_data;
^
/Users/vishalpatel/anaconda3/include/poppler/cpp/poppler-page.h:38:15: error: defaulted declaration ‘poppler::text_box& poppler::text_box::operator=(poppler::text_box)’
text_box& operator=(text_box&&) = default;
^
/Users/vishalpatel/anaconda3/include/poppler/cpp/poppler-page.h:38:15: error: does not match expected signature ‘poppler::text_box& poppler::text_box::operator=(poppler::text_box&)’
error: command 'gcc' failed with exit status 1
----------------------------------------
ERROR: Failed building wheel for pdftotext
Running setup.py clean for pdftotext
Failed to build pdftotext
Installing collected packages: pdftotext
Running setup.py install for pdftotext ... error
ERROR: Complete output from command /Users/vishalpatel/anaconda3/bin/python -u -c 'import setuptools, tokenize;__file__='"'"'/private/var/folders/f1/wd32_gd10q58w4bdk8t5f1540000gn/T/pip-install-akx2k4vg/pdftotext/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/f1/wd32_gd10q58w4bdk8t5f1540000gn/T/pip-record-mt3cslmy/install-record.txt --single-version-externally-managed --compile:
ERROR: running install
running build
running build_ext
building 'pdftotext' extension
creating build
creating build/temp.macosx-10.7-x86_64-3.6
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Users/vishalpatel/anaconda3/include -arch x86_64 -I/Users/vishalpatel/anaconda3/include -arch x86_64 -DPOPPLER_CPP_AT_LEAST_0_30_0=1 -I/Users/vishalpatel/anaconda3/include/python3.6m -c pdftotext.cpp -o build/temp.macosx-10.7-x86_64-3.6/pdftotext.o -Wall -mmacosx-version-min=10.9
cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++ [enabled by default]
In file included from pdftotext.cpp:5:0:
/Users/vishalpatel/anaconda3/include/poppler/cpp/poppler-page.h:37:22: error: expected ‘,’ or ‘...’ before ‘&&’ token
text_box(text_box&&) = default;
^
/Users/vishalpatel/anaconda3/include/poppler/cpp/poppler-page.h:37:28: error: invalid constructor; you probably meant ‘poppler::text_box (const poppler::text_box&)’
text_box(text_box&&) = default;
^
/Users/vishalpatel/anaconda3/include/poppler/cpp/poppler-page.h:38:33: error: expected ‘,’ or ‘...’ before ‘&&’ token
text_box& operator=(text_box&&) = default;
^
/Users/vishalpatel/anaconda3/include/poppler/cpp/poppler-page.h:63:5: error: ‘unique_ptr’ in namespace ‘std’ does not name a type
std::unique_ptr<text_box_data> m_data;
^
/Users/vishalpatel/anaconda3/include/poppler/cpp/poppler-page.h:38:15: error: defaulted declaration ‘poppler::text_box& poppler::text_box::operator=(poppler::text_box)’
text_box& operator=(text_box&&) = default;
^
/Users/vishalpatel/anaconda3/include/poppler/cpp/poppler-page.h:38:15: error: does not match expected signature ‘poppler::text_box& poppler::text_box::operator=(poppler::text_box&)’
error: command 'gcc' failed with exit status 1
----------------------------------------
ERROR: Command "/Users/vishalpatel/anaconda3/bin/python -u -c 'import setuptools, tokenize;__file__='"'"'/private/var/folders/f1/wd32_gd10q58w4bdk8t5f1540000gn/T/pip-install-akx2k4vg/pdftotext/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/f1/wd32_gd10q58w4bdk8t5f1540000gn/T/pip-record-mt3cslmy/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /private/var/folders/f1/wd32_gd10q58w4bdk8t5f1540000gn/T/pip-install-akx2k4vg/pdftotext/
Vishals-MacBook-Air:~ vishalpatel$
我不确定通过自制软件或pip安装pdftottext的最有效方法对我来说是否合适，但目前这两种方法均无效。我对此很陌生，因此如果未能以正确的方式提出此问题或未提供正确的信息，我们深表歉意。