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class Keg
PREFIX_PLACEHOLDER = "@@HOMEBREW_PREFIX@@".freeze
CELLAR_PLACEHOLDER = "@@HOMEBREW_CELLAR@@".freeze
def fix_install_names options={}
mach_o_files.each do |file|
file.ensure_writable do
change_dylib_id(dylib_id_for(file, options), file) if file.dylib?
each_install_name_for(file) do |bad_name|
# Don't fix absolute paths unless they are rooted in the build directory
next if bad_name.start_with? '/' and not bad_name.start_with? HOMEBREW_TEMP.to_s
new_name = fixed_name(file, bad_name)
change_install_name(bad_name, new_name, file) unless new_name == bad_name
end
end
end
end
def relocate_install_names old_prefix, new_prefix, old_cellar, new_cellar, options={}
mach_o_files.each do |file|
file.ensure_writable do
if file.dylib?
id = dylib_id_for(file, options).sub(old_prefix, new_prefix)
change_dylib_id(id, file)
end
each_install_name_for(file) do |old_name|
if old_name.start_with? old_cellar
new_name = old_name.sub(old_cellar, new_cellar)
elsif old_name.start_with? old_prefix
new_name = old_name.sub(old_prefix, new_prefix)
end
change_install_name(old_name, new_name, file) if new_name
end
end
end
files = pkgconfig_files | libtool_files | script_files
files.group_by { |f| f.stat.ino }.each_value do |first, *rest|
s = first.open("rb", &:read)
changed = s.gsub!(old_cellar, new_cellar)
changed = s.gsub!(old_prefix, new_prefix) || changed
begin
first.atomic_write(s)
rescue SystemCallError
first.ensure_writable do
first.open("wb") { |f| f.write(s) }
end
else
rest.each { |file| FileUtils.ln(first, file, :force => true) }
end if changed
end
end
def change_dylib_id(id, file)
puts "Changing dylib ID of #{file}\n from #{file.dylib_id}\n to #{id}" if ARGV.debug?
install_name_tool("-id", id, file)
end
def change_install_name(old, new, file)
puts "Changing install name in #{file}\n from #{old}\n to #{new}" if ARGV.debug?
install_name_tool("-change", old, new, file)
end
# Detects the C++ dynamic libraries in place, scanning the dynamic links
# of the files within the keg. This searches only libs contained within
# lib/, and ignores binaries and other mach-o objects
# Note that this doesn't attempt to distinguish between libstdc++ versions,
# for instance between Apple libstdc++ and GNU libstdc++
def detect_cxx_stdlibs(options={})
options = { :skip_executables => false }.merge(options)
skip_executables = options[:skip_executables]
results = Set.new
mach_o_files.each do |file|
next if file.mach_o_executable? && skip_executables
dylibs = file.dynamically_linked_libraries
results << :libcxx unless dylibs.grep(/libc\+\+.+\.dylib/).empty?
results << :libstdcxx unless dylibs.grep(/libstdc\+\+.+\.dylib/).empty?
end
results.to_a
end
def each_unique_file_matching string
Utils.popen_read("/usr/bin/fgrep", "-lr", string, to_s) do |io|
hardlinks = Set.new
until io.eof?
file = Pathname.new(io.readline.chomp)
next if file.symlink?
yield file if hardlinks.add? file.stat.ino
end
end
end
def install_name_tool(*args)
tool = MacOS.locate("install_name_tool")
system(tool, *args) or raise ErrorDuringExecution.new(tool, args)
end
# If file is a dylib or bundle itself, look for the dylib named by
# bad_name relative to the lib directory, so that we can skip the more
# expensive recursive search if possible.
def fixed_name(file, bad_name)
if bad_name.start_with? PREFIX_PLACEHOLDER
bad_name.sub(PREFIX_PLACEHOLDER, HOMEBREW_PREFIX.to_s)
elsif bad_name.start_with? CELLAR_PLACEHOLDER
bad_name.sub(CELLAR_PLACEHOLDER, HOMEBREW_CELLAR.to_s)
elsif (file.dylib? || file.mach_o_bundle?) && (file.parent + bad_name).exist?
"@loader_path/#{bad_name}"
elsif file.mach_o_executable? && (lib + bad_name).exist?
"#{lib}/#{bad_name}"
elsif (abs_name = find_dylib(Pathname.new(bad_name).basename)) && abs_name.exist?
abs_name.to_s
else
opoo "Could not fix #{bad_name} in #{file}"
bad_name
end
end
def lib
path.join("lib")
end
def each_install_name_for file, &block
dylibs = file.dynamically_linked_libraries
dylibs.reject! { |fn| fn =~ /^@(loader_|executable_|r)path/ }
dylibs.each(&block)
end
def dylib_id_for(file, options)
# The new dylib ID should have the same basename as the old dylib ID, not
# the basename of the file itself.
basename = File.basename(file.dylib_id)
relative_dirname = file.dirname.relative_path_from(path)
shortpath = HOMEBREW_PREFIX.join(relative_dirname, basename)
if shortpath.exist? and not options[:keg_only]
shortpath.to_s
else
opt_record.join(relative_dirname, basename).to_s
end
end
def find_dylib name
lib.find { |pn| break pn if pn.basename == name }
end
def mach_o_files
mach_o_files = []
path.find do |pn|
next if pn.symlink? or pn.directory?
mach_o_files << pn if pn.dylib? or pn.mach_o_bundle? or pn.mach_o_executable?
end
mach_o_files
end
def script_files
script_files = []
# find all files with shebangs
find do |pn|
next if pn.symlink? or pn.directory?
script_files << pn if pn.text_executable?
end
script_files
end
def pkgconfig_files
pkgconfig_files = []
%w[lib share].each do |dir|
pcdir = path.join(dir, "pkgconfig")
pcdir.find do |pn|
next if pn.symlink? or pn.directory? or pn.extname != '.pc'
pkgconfig_files << pn
end if pcdir.directory?
end
pkgconfig_files
end
def libtool_files
libtool_files = []
# find .la files, which are stored in lib/
lib.find do |pn|
next if pn.symlink? or pn.directory? or pn.extname != '.la'
libtool_files << pn
end if lib.directory?
libtool_files
end
end
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