From c5fe339b5516eb35fbca66712685bd69bc6b5027 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 25 Jun 2004 06:33:26 +0000
Subject: * ext/iconv/extconf.rb: check stricter.  [ruby-talk:104501]

* ext/iconv/extconf.rb: include iconv.h for libiconv.  [ruby-dev:22715]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@6519 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog            |  6 ++++++
 ext/iconv/extconf.rb | 26 +++++++++++++++-----------
 2 files changed, 21 insertions(+), 11 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 8c852d0511..c154f22cdd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Fri Jun 25 15:33:19 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* ext/iconv/extconf.rb: check stricter.  [ruby-talk:104501]
+
+	* ext/iconv/extconf.rb: include iconv.h for libiconv.  [ruby-dev:22715]
+
 Fri Jun 25 02:04:23 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* {bcc32,win32,wince}/setup.mak: remove RUBY_EXTERN lines when
diff --git a/ext/iconv/extconf.rb b/ext/iconv/extconf.rb
index 36cd60ed15..65ea327950 100644
--- a/ext/iconv/extconf.rb
+++ b/ext/iconv/extconf.rb
@@ -5,22 +5,26 @@ dir_config("iconv")
 conf = File.exist?(File.join($srcdir, "config.charset"))
 conf = with_config("config-charset", enable_config("config-charset", conf))
 
-if have_header("iconv.h")
-  if !try_compile("", "-Werror") or checking_for("iconv() 2nd argument is const") do
-      !try_compile('
-#include <iconv.h>
-size_t
-test(iconv_t cd, char **inptr, size_t *inlen, char **outptr, size_t *outlen)
-{
-    return iconv(cd, inptr, inlen, outptr, outlen);
-}
-', "-Werror")
+if have_func("iconv", "iconv.h") or
+    have_library("iconv", "iconv") {|s| s.sub(/(?=\n\/\*top\*\/)/, "#include <iconv.h>")}
+  if checking_for("const of iconv() 2nd argument") do
+      create_tmpsrc(cpp_include("iconv.h") + "---> iconv(cd,0,0,0,0) <---")
+      src = xpopen(cpp_command("")) {|f|f.read}
+      if !(func = src[/^--->\s*(\w+).*\s*<---/, 1])
+        Logging::message "iconv function name not found"
+        false
+      elsif !(second = src[%r"\b#{func}\s*\(.*?,(.*?),.*?\)\s*;"m, 1])
+        Logging::message "prototype for #{func}() not found"
+        false
+      else
+        Logging::message $&+"\n"
+        /\bconst\b/ =~ second
+      end
     end
     $defs.push('-DICONV_INPTR_CAST=""')
   else
     $defs.push('-DICONV_INPTR_CAST="(char **)"')
   end
-  have_library("iconv")
   if conf
     prefix = '$(srcdir)'
     prefix =  $nmake ? "{#{prefix}}" : "#{prefix}/"
-- 
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