Tweak for the qtgl problem regarding libc_r some people are seeing.

If this does not work, please send me the result of "make -DDEBUG" and
the generated Makefile (if any).

x11-toolkits/ruby-qt2/Makefile

@@ -15,7 +15,7 @@ DIST_SUBDIR=	ruby
 
 MAINTAINER=	knu@FreeBSD.org
 
-USE_QT2=	yes
+USE_QT_VER=	2
 USE_RUBY=	yes
 USE_RUBY_EXTCONF=	yes
 

x11-toolkits/ruby-qt2/Makefile.common

@@ -1,7 +1,7 @@
 # $FreeBSD$
 
 RUBY_QT2_VERSION=	0.12
-RUBY_QT2_PORTVERSION=	${RUBY_QT2_VERSION}a.1
+RUBY_QT2_PORTVERSION=	${RUBY_QT2_VERSION}a.2
 RUBY_QT2_MASTER_SITES=	http://sfns.u-shizuoka-ken.ac.jp/geneng/horie_hp/ruby/
 RUBY_QT2_DISTNAME=	ruby-qt2-${RUBY_QT2_VERSION}
 
@@ -15,3 +15,8 @@ RUBY_QT2_CONFIGURE_ARGS= \
 			--with-qt2=qtgl
 
 MD5_FILE=		${RUBY_QT2_PORTDIR}/distinfo
+
+pre-build: pre-pre-build
+
+pre-pre-build:
+	${RUBY} -i -pe 'sub /-lc\b/, "-pthread"' ${WRKSRC}/Makefile