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From 643a3d3af2a3847e730c79515bc586768053119a Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?V=C3=ADt=20Ondruch?= <vondruch@redhat.com>
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Date: Fri, 11 Nov 2011 13:14:45 +0100
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Subject: [PATCH] Allow to install RubyGems into custom location, outside of
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 Ruby tree.
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---
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 configure.in      | 8 ++++++++
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 tool/mkconfig.rb  | 1 +
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 tool/rbinstall.rb | 9 +++++++++
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 version.c         | 4 ++++
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 4 files changed, 22 insertions(+)
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diff --git a/configure.in b/configure.in
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index 748edc9..6a16745 100644
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--- a/configure.in
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+++ b/configure.in
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@@ -3224,6 +3224,13 @@ until VENDORARCH_DIR=`eval echo \\"${dir}\\"`; test "x${dir}" = "x${VENDORARCH_D
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     dir="${VENDORARCH_DIR}"
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 done
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+AC_ARG_WITH(rubygemsdir,
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+           AS_HELP_STRING([--with-rubygemsdir=DIR], [custom rubygems directory]),
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+            [rubygemsdir=$withval])
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+if test "$rubygemsdir" != ""; then
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+    AC_DEFINE_UNQUOTED(RUBYGEMS_DIR,"$rubygemsdir" !<verconf>!)
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+fi
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+
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 if test "${LOAD_RELATIVE+set}"; then
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     AC_DEFINE_UNQUOTED(LOAD_RELATIVE, $LOAD_RELATIVE)
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     RUBY_EXEC_PREFIX=""
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@@ -3317,6 +3324,7 @@ AC_SUBST(sitedir)dnl
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 AC_SUBST(sitearchdir)dnl
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 AC_SUBST(vendordir)dnl
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 AC_SUBST(vendorarchdir)dnl
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+AC_SUBST(rubygemsdir)dnl
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 configure_args=$ac_configure_args
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 AC_SUBST(configure_args)dnl
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diff --git a/tool/mkconfig.rb b/tool/mkconfig.rb
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index 79b8e44..9cef0c6 100755
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--- a/tool/mkconfig.rb
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+++ b/tool/mkconfig.rb
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@@ -86,6 +86,7 @@ File.foreach "config.status" do |line|
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     when /^sitearchdir$/; sitearchdir_override = val; next
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     when /^vendorarchdir$/; vendorarchdir_override = val; next
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     when /^sitearch/; val = '$(arch)' if val.empty?
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+    when /^rubygemsdir/; next if val.empty?
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     end
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     case val
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     when /^\$\(ac_\w+\)$/; next
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diff --git a/tool/rbinstall.rb b/tool/rbinstall.rb
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index 17294a2..2757a73 100755
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--- a/tool/rbinstall.rb
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+++ b/tool/rbinstall.rb
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@@ -313,6 +313,7 @@ sitelibdir = CONFIG["sitelibdir"]
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 sitearchlibdir = CONFIG["sitearchdir"]
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 vendorlibdir = CONFIG["vendorlibdir"]
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 vendorarchlibdir = CONFIG["vendorarchdir"]
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+rubygemsdir = CONFIG["rubygemsdir"]
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 mandir = CONFIG["mandir", true]
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 docdir = CONFIG["docdir", true]
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 configure_args = Shellwords.shellwords(CONFIG["configure_args"])
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@@ -500,7 +501,15 @@ end
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 install?(:local, :comm, :lib) do
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   prepare "library scripts", rubylibdir
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   noinst = %w[README* *.txt *.rdoc *.gemspec]
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+  noinst += %w[*ubygems.rb rubygems/ datadir.rb] if rubygemsdir
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   install_recursive(File.join(srcdir, "lib"), rubylibdir, :no_install => noinst, :mode => $data_mode)
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+  if rubygemsdir
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+    noinst = %w[obsolete.rb]
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+    install_recursive(File.join(srcdir, "lib", "rubygems"), File.join(rubygemsdir, "rubygems"), :mode => $data_mode)
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+    install_recursive(File.join(srcdir, "lib", "rbconfig"), File.join(rubygemsdir, "rbconfig"), :no_install => noinst, :mode => $data_mode)
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+    install(File.join(srcdir, "lib", "ubygems.rb"), File.join(rubygemsdir, "ubygems.rb"), :mode => $data_mode)
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+    install(File.join(srcdir, "lib", "rubygems.rb"), File.join(rubygemsdir, "rubygems.rb"), :mode => $data_mode)
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+  end
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 end
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 install?(:local, :arch, :lib) do
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diff --git a/version.c b/version.c
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index 962f39f..979701d 100644
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--- a/version.c
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+++ b/version.c
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@@ -104,6 +104,10 @@ const char ruby_initial_load_paths[] =
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 #endif
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 #endif
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+#ifdef RUBYGEMS_DIR
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+    RUBYGEMS_DIR "\0"
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+#endif
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+
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     RUBY_LIB "\0"
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 #ifdef RUBY_THIN_ARCHLIB
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     RUBY_THIN_ARCHLIB "\0"
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-- 
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1.8.0
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