Top Level Namespace

Defined Under Namespace

Modules: Magick

Constant Summary collapse

RMAGICK_VERS = 
"0.0.0"
MIN_RUBY_VERS = 
"1.8.5"
MIN_RUBY_VERS_NO = 
MIN_RUBY_VERS.tr(".","").to_i
MIN_IM_VERS = 
"6.4.9"
MIN_IM_VERS_NO = 
MIN_IM_VERS.tr(".","").to_i
SUMMARY = 
<<"END_SUMMARY"


#{"=" * 70}
#{DateTime.now.strftime("%a %d%b%y %T")}
This installation of RMagick #{RMAGICK_VERS} is configured for
Ruby #{RUBY_VERSION} (#{RUBY_PLATFORM}) and ImageMagick #{$magick_version}
#{"=" * 70}


END_SUMMARY

Instance Method Summary collapse

Instance Method Details

#check_multiple_imagemagick_versions ⇒ Object

Seems like lots of people have multiple versions of ImageMagick installed.



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# File 'ext/RMagick/extconf.rb', line 52

def check_multiple_imagemagick_versions()
   versions = []
   path = ENV['PATH'].split(File::PATH_SEPARATOR)
   path.each do |dir|
      file = File.join(dir, "Magick-config")
      if File.executable? file
         vers = `#{file} --version`.chomp.strip
         prefix = `#{file} --prefix`.chomp.strip
         versions << [vers, prefix, dir]
      end
   end
   versions.uniq!
   if versions.size > 1
      msg = "\nWarning: Found more than one ImageMagick installation. This could cause problems at runtime.\n"
      versions.each do |vers, prefix, dir|
         msg << "         #{dir}/Magick-config reports version #{vers} is installed in #{prefix}\n"
      end
      msg << "Using #{versions[0][0]} from #{versions[0][1]}.\n\n"
      Logging::message msg
      message msg
   end
end

#check_partial_imagemagick_versions ⇒ Object

Ubuntu (maybe other systems) comes with a partial installation of ImageMagick in the prefix /usr (some libraries, no includes, and no binaries). This causes problems when /usr/lib is in the path (e.g., using the default Ruby installation).



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# File 'ext/RMagick/extconf.rb', line 80

def check_partial_imagemagick_versions()
   prefix = config_string("prefix")
   matches = [
     prefix+"/lib/lib?agick*",
     prefix+"/include/ImageMagick",
     prefix+"/bin/Magick-config",
   ].map do |file_glob|
     Dir.glob(file_glob)
   end
   matches.delete_if { |arr| arr.empty? }
   if 0 < matches.length and matches.length < 3
      msg = "\nWarning: Found a partial ImageMagick installation. Your operating system likely has some built-in ImageMagick libraries but not all of ImageMagick. This will most likely cause problems at both compile and runtime.\nFound partial installation at: "+prefix+"\n"
      Logging::message msg
      message msg
   end
end

#exit_failure(msg) ⇒ Object 



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# File 'ext/RMagick/extconf.rb', line 42

def exit_failure(msg)
  Logging::message msg
  message msg+"\n"
  exit(1)
end

#have_enum_value(enum, value, headers = nil, &b) ⇒ Object

Test for a specific value in an enum type



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# File 'ext/RMagick/extconf.rb', line 13

def have_enum_value(enum, value, headers=nil, &b)
  checking_for "#{enum}.#{value}" do
    if try_compile(<<"SRC", &b)
#{COMMON_HEADERS}
#{cpp_include(headers)}
/*top*/
int main() { #{enum} t = #{value}; t = t; return 0; }
SRC
      $defs.push(format("-DHAVE_ENUM_%s", value.upcase))
      true
    else
      false
    end
  end
end

#have_enum_values(enum, values, headers = nil, &b) ⇒ Object

Test for multiple values of the same enum type



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# File 'ext/RMagick/extconf.rb', line 33

def have_enum_values(enum, values, headers=nil, &b)
  values.each do |value|
    have_enum_value(enum, value, headers, &b)
  end
end