1 files changed, 417 insertions, 0 deletions
diff --git a/trunk/ext/tk/extconf.rb b/trunk/ext/tk/extconf.rb
new file mode 100644
index 0000000000..be3781251e
--- /dev/null
+++ b/trunk/ext/tk/extconf.rb
@@ -0,0 +1,417 @@
+# extconf.rb for tcltklib
+
+require 'mkmf'
+
+is_win32 = (/mswin|mingw|cygwin|bccwin|wince/ =~ RUBY_PLATFORM)
+#is_macosx = (/darwin/ =~ RUBY_PLATFORM)
+
+have_func("ruby_native_thread_p", "ruby.h")
+have_func("rb_errinfo", "ruby.h")
+have_func("rb_safe_level", "ruby.h")
+have_struct_member("struct RArray", "ptr", "ruby.h")
+have_struct_member("struct RArray", "len", "ruby.h")
+
+def find_framework(tcl_hdr, tk_hdr)
+  if framework_dir = with_config("tcltk-framework")
+    paths = [framework_dir]
+  else
+    unless tcl_hdr || tk_hdr ||
+        enable_config("tcltk-framework", false) ||
+        enable_config("mac-tcltk-framework", false)
+      return false
+    end
+    paths = ["/Library/Frameworks", "/System/Library/Frameworks"]
+  end
+
+  checking_for('Tcl/Tk Framework') {
+    paths.find{|dir|
+      dir.strip!
+      dir.chomp!('/')
+      (tcl_hdr || FileTest.directory?(dir + "/Tcl.framework/") ) &&
+        (tk_hdr || FileTest.directory?(dir + "/Tk.framework/") )
+    }
+  }
+end
+
+tcl_framework_header = with_config("tcl-framework-header")
+tk_framework_header  = with_config("tk-framework-header")
+
+tcltk_framework = find_framework(tcl_framework_header, tk_framework_header)
+
+unless is_win32
+  have_library("nsl", "t_open")
+  have_library("socket", "socket")
+  have_library("dl", "dlopen")
+  have_library("m", "log") 
+end
+
+tk_idir,  tk_ldir  = dir_config("tk")
+tcl_idir, tcl_ldir = dir_config("tcl")
+x11_idir, x11_ldir = dir_config("X11")
+
+tk_ldir2  = with_config("tk-lib")
+tcl_ldir2 = with_config("tcl-lib")
+x11_ldir2 = with_config("X11-lib")
+
+tk_ldir_list  = [tk_ldir2,  tk_ldir]
+tcl_ldir_list = [tcl_ldir2, tcl_ldir]
+
+tklib = with_config("tklib")
+tcllib = with_config("tcllib")
+stubs = enable_config("tcltk_stubs") || with_config("tcltk_stubs")
+
+tcltk_version = with_config("tcltkversion")
+
+use_X = with_config("X11", (! is_win32))
+
+def check_tcltk_version(version)
+  return [nil, nil] unless version
+
+  version = version.strip
+
+  tclver = version.dup
+  tkver  = version.dup
+
+  major = dot = minor = dot = plvl = ext = nil
+
+  if version =~ /^(\d)(\.?)(\d)(\.?)(\d*)(.*)$/
+    major = $1; minor_dot = $2; minor = $3; plvl_dot  = $4; plvl = $5; ext = $6
+    dot = ! minor_dot.empty?
+    if plvl_dot.empty? && ! plvl.empty?
+      minor << plvl
+    end
+  elsif version =~ /^(\d)(\.?)(\d?)(.*)$/
+    major = $1; minor_dot = $2; minor = $3; ext = $4
+    dot = ! minor_dot.empty?
+  else # unknown -> believe user
+    return [tclver, tkver]
+  end
+
+  # check Tcl7.6 / Tk4.2 ?
+  if major == "7" # Tcl7.6 ( not support Tclversion < 7.6 )
+    # Tk4.2
+    tkver  = "4" + ((dot)? ".": "") + ((minor.empty)? "": "2") + ext
+  elsif major == "4" # Tk4.2 ( not support Tkversion < 4.2 )
+    # Tcl7.6
+    tclver = "7" + ((dot)? ".": "") + ((minor.empty)? "": "6") + ext
+  end
+
+  [tclver, tkver]
+end
+
+def find_tcl(tcllib, stubs, version, *opt_paths)
+  default_paths = ["/usr/local/lib", "/usr/pkg/lib", "/usr/lib"]
+  default_paths << "/Tcl/lib"  # default for ActiveTcl
+
+  if (paths = opt_paths.compact).empty?
+    paths = default_paths
+  end
+
+  if stubs
+    func = "Tcl_InitStubs"
+    lib = "tclstub"
+  else
+    func = "Tcl_FindExecutable"
+    lib = "tcl"
+  end
+
+  if version && ! version.empty?
+    versions = [version]
+  else
+    versions = %w[8.6 8.5 8.4 8.3 8.2 8.1 8.0 7.6]
+  end
+
+  if tcllib
+    st = find_library(tcllib, func, *paths)
+  else
+    st = versions.find { |ver|
+           find_library("#{lib}#{ver}", func, *paths) or
+           find_library("#{lib}#{ver.delete('.')}", func, *paths) or
+           find_library("#{lib}#{ver}g", func, *paths) or
+           find_library("#{lib}#{ver.delete('.')}g", func, *paths) or
+           find_library("tcl#{ver}", func, *paths) or
+           find_library("tcl#{ver.delete('.')}", func, *paths) or
+           find_library("tcl#{ver}g", func, *paths) or
+           find_library("tcl#{ver.delete('.')}g", func, *paths)
+         } || (!version && find_library(lib, func, *paths))
+  end
+
+  unless st
+    puts("Warning:: cannot find Tcl library. tcltklib will not be compiled (tcltklib is disabled on your Ruby == Ruby/Tk will not work). Please check configure options.")
+  end
+  st
+end
+
+def find_tk(tklib, stubs, version, *opt_paths)
+  default_paths = ["/usr/local/lib", "/usr/pkg/lib", "/usr/lib"]
+  default_paths << "/Tcl/lib"  # default for ActiveTcl
+
+  if (paths = opt_paths.compact).empty?
+    paths = default_paths
+  end
+
+  if stubs
+    func = "Tk_InitStubs"
+    lib = "tkstub"
+  else
+    func = "Tk_Init"
+    lib = "tk"
+  end
+
+  if version && ! version.empty?
+    versions = [version]
+  else
+    versions = %w[8.6 8.5 8.4 8.3 8.2 8.1 8.0 4.2]
+  end
+
+  if tklib
+    st = find_library(tklib, func, *paths)
+  else
+    st = versions.find { |ver|
+           find_library("#{lib}#{ver}", func, *paths) or
+           find_library("#{lib}#{ver.delete('.')}", func, *paths) or
+           find_library("#{lib}#{ver}g", func, *paths) or
+           find_library("#{lib}#{ver.delete('.')}g", func, *paths) or
+           find_library("tk#{ver}", func, *paths) or
+           find_library("tk#{ver.delete('.')}", func, *paths) or 
+           find_library("tk#{ver}g", func, *paths) or
+           find_library("tk#{ver.delete('.')}g", func, *paths)
+         } || (!version && find_library(lib, func, *paths))
+  end
+
+  unless st
+    puts("Warning:: cannot find Tk library. tcltklib will not be compiled (tcltklib is disabled on your Ruby == Ruby/Tk will not work). Please check configure options.")
+  end
+  st
+end
+
+def find_X11(*opt_paths)
+  default_paths = 
+    [ "/usr/X11/lib", "/usr/lib/X11", "/usr/X11R6/lib", "/usr/openwin/lib" ]
+  paths = opt_paths.compact.concat(default_paths)
+  st = find_library("X11", "XOpenDisplay", *paths)
+  unless st
+    puts("Warning:: cannot find X11 library. tcltklib will not be compiled (tcltklib is disabled on your Ruby == Ruby/Tk will not work). Please check configure options. If your Tcl/Tk don't require X11, please try --without-X11.")
+  end
+  st
+end 
+
+def pthread_check()
+  tcl_major_ver = nil
+  tcl_minor_ver = nil
+
+  # Is tcl-thread given by user ?
+  case enable_config("tcl-thread")
+  when true
+    tcl_enable_thread = true
+  when false
+    tcl_enable_thread = false
+  else
+    tcl_enable_thread = nil
+  end
+
+  if (tclConfig = with_config("tclConfig-file"))
+    if tcl_enable_thread == true
+      puts("Warning: --with-tclConfig-file option is ignored, because --enable-tcl-thread option is given.")
+    elsif tcl_enable_thread == false
+      puts("Warning: --with-tclConfig-file option is ignored, because --disable-tcl-thread option is given.")
+    else
+      # tcl-thread is unknown and tclConfig.sh is given
+      begin
+        open(tclConfig, "r") do |cfg|
+          while line = cfg.gets()
+            if line =~ /^\s*TCL_THREADS=(0|1)/
+              tcl_enable_thread = ($1 == "1")
+              break
+            end
+
+            if line =~ /^\s*TCL_MAJOR_VERSION=("|')(\d+)\1/
+              tcl_major_ver = $2
+              if tcl_major_ver =~ /^[1-7]$/
+                tcl_enable_thread = false
+                break
+              end
+              if tcl_major_ver == "8" && tcl_minor_ver == "0"
+                tcl_enable_thread = false
+                break
+              end
+            end
+
+            if line =~ /^\s*TCL_MINOR_VERSION=("|')(\d+)\1/
+              tcl_minor_ver = $2
+              if tcl_major_ver == "8" && tcl_minor_ver == "0"
+                tcl_enable_thread = false
+                break
+              end
+            end
+          end
+        end
+
+        if tcl_enable_thread == nil
+          # not find definition
+          if tcl_major_ver
+            puts("Warning: '#{tclConfig}' doesn't include TCL_THREADS definition.")
+          else
+            puts("Warning: '#{tclConfig}' may not be a tclConfig file.")
+          end
+          tclConfig = false
+        end
+      rescue Exception
+        puts("Warning: fail to read '#{tclConfig}'!! --> ignore the file")
+        tclConfig = false
+      end
+    end
+  end
+
+  if tcl_enable_thread == nil && !tclConfig
+    # tcl-thread is unknown and tclConfig is unavailable
+    begin
+      try_run_available = try_run("int main() { exit(0); }")
+    rescue Exception
+      # cannot try_run. Is CROSS-COMPILE environment?
+      puts(%Q'\
+*****************************************************************************
+**
+** PTHREAD SUPPORT CHECK WARNING: 
+**
+**   We cannot check the consistency of pthread support between Ruby 
+**   and the Tcl/Tk library in your environment (are you perhaps
+**   cross-compiling?). If pthread support for these 2 packages is
+**   inconsistent you may find you get errors when running Ruby/Tk
+**   (e.g. hangs or segmentation faults).  We strongly recommend
+**   you to check the consistency manually.
+**
+*****************************************************************************
+')
+      return true
+    end
+  end
+
+  if tcl_enable_thread == nil
+    # tcl-thread is unknown
+    if try_run(<<EOF)
+#include <tcl.h>
+int main() { 
+   Tcl_Interp *ip;
+   ip = Tcl_CreateInterp();
+   exit((Tcl_Eval(ip, "set tcl_platform(threaded)") == TCL_OK)? 0: 1);
+}
+EOF
+      tcl_enable_thread = true
+    elsif try_run(<<EOF)
+#include <tcl.h>
+static Tcl_ThreadDataKey dataKey;
+int main() { exit((Tcl_GetThreadData(&dataKey, 1) == dataKey)? 1: 0); }
+EOF
+      tcl_enable_thread = true
+    else
+      tcl_enable_thread = false
+    end
+  end
+
+  # check pthread mode
+  if (macro_defined?('HAVE_NATIVETHREAD', '#include "ruby.h"'))
+    # ruby -> enable
+    unless tcl_enable_thread
+      # ruby -> enable && tcl -> disable
+      puts(%Q'\
+*****************************************************************************
+**
+** PTHREAD SUPPORT MODE WARNING: 
+**
+**   Ruby is compiled with --enable-pthread, but your Tcl/Tk library
+**   seems to be compiled without pthread support. Although you can
+**   create the tcltklib library, this combination may cause errors
+**   (e.g. hangs or segmentation faults). If you have no reason to
+**   keep the current pthread support status, we recommend you reconfigure
+**   and recompile the libraries so that both or neither support pthreads.
+**
+**   If you want change the status of pthread support, please recompile 
+**   Ruby without "--enable-pthread" configure option or recompile Tcl/Tk 
+**   with "--enable-threads" configure option (if your Tcl/Tk is later 
+**   than or equal to Tcl/Tk 8.1).
+**
+*****************************************************************************
+')
+    end
+
+    # ruby -> enable && tcl -> enable/disable
+    if tcl_enable_thread
+      $CPPFLAGS += ' -DWITH_TCL_ENABLE_THREAD=1'
+    else
+      $CPPFLAGS += ' -DWITH_TCL_ENABLE_THREAD=0'
+    end
+
+    return true
+
+  else
+    # ruby -> disable
+    if tcl_enable_thread
+      # ruby -> disable && tcl -> enable
+      puts(%Q'\
+*****************************************************************************
+**
+** PTHREAD SUPPORT MODE ERROR: 
+**
+**   Ruby is not compiled with --enable-pthread, but your Tcl/Tk 
+**   library seems to be compiled with pthread support. This
+**   combination may cause frequent hang or segmentation fault
+**   errors when Ruby/Tk is working. We recommend that you NEVER
+**   create the library with such a combination of pthread support.
+**
+**   Please recompile Ruby with the "--enable-pthread" configure option
+**   or recompile Tcl/Tk with the "--disable-threads" configure option.
+**
+*****************************************************************************
+')
+      $CPPFLAGS += ' -DWITH_TCL_ENABLE_THREAD=1'
+      return false
+    else
+      # ruby -> disable && tcl -> disable
+      $CPPFLAGS += ' -DWITH_TCL_ENABLE_THREAD=0'
+      return true
+    end
+  end
+end
+
+tclver, tkver = check_tcltk_version(tcltk_version)
+
+if have_header("tcl.h") && have_header("tk.h") && 
+    ( tcltk_framework || 
+        ( ( !use_X || find_X11(x11_ldir2, x11_ldir) ) &&
+            find_tcl(tcllib, stubs, tclver, *tcl_ldir_list) &&
+            find_tk(tklib, stubs, tkver, *tk_ldir_list) ) )
+  $CPPFLAGS += ' -DUSE_TCL_STUBS -DUSE_TK_STUBS' if stubs
+  $CPPFLAGS += ' -D_WIN32' if /cygwin/ =~ RUBY_PLATFORM
+
+  if tcltk_framework
+    if tcl_framework_header
+      $CPPFLAGS += " -I#{tcl_framework_header}"
+    else
+      $CPPFLAGS += " -I#{tcltk_framework}/Tcl.framework/Headers"
+    end
+
+    if tk_framework_header
+      $CPPFLAGS += " -I#{tk_framework_header}"
+    else
+      $CPPFLAGS += " -I#{tcltk_framework}/Tk.framework/Headers"
+    end
+
+    $LDFLAGS += ' -framework Tk -framework Tcl'
+  end
+
+  if stubs or pthread_check
+    # create Makefile
+
+    # for SUPPORT_STATUS
+    $INSTALLFILES ||= []
+    $INSTALLFILES << ["lib/tkextlib/SUPPORT_STATUS", "$(RUBYLIBDIR)", "lib"]
+
+    have_func("rb_hash_lookup", "ruby.h")
+
+    # create
+    $defs << %[-DRUBY_VERSION=\\"#{RUBY_VERSION}\\"]
+    $defs << %[-DRUBY_RELEASE_DATE=\\"#{RUBY_RELEASE_DATE}\\"]
+    create_makefile("tcltklib")
+  end
+end