错误:无法构建gem本机扩展。M1芯片未找到potracelib.h

Question

我正在尝试在我的Macbook Air中安装一个配备M1芯片的Rails 5应用程序。这个应用程序使用了一个名为potracer的gem。

在执行$ bundle install之后，我得到了以下错误：

Installing potracer 1.1.4 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /Users/user/.rvm/gems/ruby-2.7.2/gems/potracer-1.1.4/ext/potracer
/Users/user/.rvm/rubies/ruby-2.7.2/bin/ruby -I /Users/user/.rvm/rubies/ruby-2.7.2/lib/ruby/2.7.0 -r ./siteconf20211025-1533-nnxnj9.rb extconf.rb
checking for potracelib.h... no
potracelib.h not found
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
    --with-opt-dir
    --with-opt-include
    --without-opt-include=${opt-dir}/include
    --with-opt-lib
    --without-opt-lib=${opt-dir}/lib
    --with-make-prog
    --without-make-prog
    --srcdir=.
    --curdir
    --ruby=/Users/user/.rvm/rubies/ruby-2.7.2/bin/$(RUBY_BASE_NAME)
    --with-potrace-dir
    --without-potrace-dir
    --with-potrace-include
    --without-potrace-include=${potrace-dir}/include
    --with-potrace-lib
    --without-potrace-lib=${potrace-dir}/lib

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /Users/user/.rvm/gems/ruby-2.7.2/extensions/arm64-darwin-20/2.7.0/potracer-1.1.4/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /Users/user/.rvm/gems/ruby-2.7.2/gems/potracer-1.1.4 for inspection.
Results logged to /Users/user/.rvm/gems/ruby-2.7.2/extensions/arm64-darwin-20/2.7.0/potracer-1.1.4/gem_make.out

An error occurred while installing potracer (1.1.4), and Bundler cannot continue.
Make sure that `gem install potracer -v '1.1.4' --source 'https://rubygems.org/'` succeeds before bundling.

In Gemfile:
  potracer

我在安装带有M1芯片的其他rails应用程序时遇到了其他问题，但我找到了解决方法，但不是在这种情况下。

关于如何解决这个问题的想法？

Answer 1

之前你必须重新安装potrace loccaly。安装似乎不完整。

您需要安装库/头文件。根据您的平台，它可能类似于libpotrace和libpitrace dev。

您可以通过homebrew、apt、dnf等安装它们。

除非您在本地获得potrace.h，否则potrace执行将中止

找不到

中止potracelib.h‘除非find_header('potracelib.h')

    require 'mkmf'

RbConfig::MAKEFILE_CONFIG['CC'] = ENV['CC'] if ENV['CC']

LIBDIR = RbConfig::CONFIG['libdir']
INCLUDEDIR = RbConfig::CONFIG['includedir']

HEADER_DIRS = ['/opt/local/include', '/usr/local/include', INCLUDEDIR,
               '/usr/include']

LIB_DIRS = ['/opt/local/lib', '/usr/local/lib', LIBDIR, '/usr/lib']

dir_config('potrace', HEADER_DIRS, LIB_DIRS)

abort 'potracelib.h not found' unless find_header('potracelib.h')
abort 'lib potrace not found' unless find_library('potrace', 'potrace_version')

create_header
create_makefile('potracer/potracer')

来源：https://github.com/kennyp/potracer/blob/b67d3ff6a1ae672ccc6701fa5245fa532b461ef3/ext/potracer/extconf.rb