--- rpl/configure.ac	2016/09/29 18:47:42	1.171
+++ rpl/configure.ac	2016/10/11 14:01:40	1.177
@@ -9,7 +9,7 @@ AC_CONFIG_HEADERS([rplconfig.h])
 
 dnl Libraries
 NCURSES=ncurses-6.0
-READLINE=readline-6.3
+READLINE=readline-7.0
 UNITS=units-2.13
 GSL=gsl-2.2.1
 GPP=gpp-3.0
@@ -1324,6 +1324,12 @@ case $OS in
 	break ;;
 esac
 
+BROKEN_SIGSEGV=-UBROKEN_SIGSEGV
+BUILD_SIGSEGV=$SIGSEGV
+LIBSIGSEGV=\$\(top_builddir\)/tools/$SIGSEGV/src/.libs/@LIB_PREFIX@sigsegv.a
+INCSIGSEGV="-I\$(top_builddir)/tools/$SIGSEGV/src"
+CYGWIN_LDFLAGS=
+
 case $HOST in
 	x86_64-*-linux-gnu)
 		ARCH=amd64
@@ -1341,14 +1347,27 @@ case $HOST in
 		ARCH=mipsel
 	break;;
 
+	x86_64-*-cygwin)
+		BROKEN_SIGSEGV=-DBROKEN_SIGSEGV
+		BUILD_SIGSEGV=
+		INCSIGSEGV=
+		LIBSIGSEGV=
+		ARCH=$(echo $HOST | cut -f1 -d-)
+		CYGWIN_LDFLAGS=-Wl,--allow-multiple-definition \
+				-Wl,--out-implib,rpl.exe.a
+	break;;
+
 	*)
 		ARCH=$(echo $HOST | cut -f1 -d-)
 	break ;;
 esac
 
+AC_SUBST(INCSIGSEGV)
+AC_SUBST(LIBSIGSEGV)
 AC_SUBST(WHOLE_LIB1)
 AC_SUBST(WHOLE_LIB2)
 AC_SUBST(LIB_PREFIX)
+AC_SUBST(CYGWIN_LDFLAGS)
 
 AC_SUBST(C_STANDARD)
 AC_SUBST(EXPORT_DYNAMIC)
@@ -1391,6 +1410,8 @@ AC_SUBST(GIAC)
 AC_SUBST(INCMOTIF)
 AC_SUBST(LIBMOTIF)
 AC_SUBST(ZLIB)
+AC_SUBST(BUILD_SIGSEGV)
+AC_SUBST(BROKEN_SIGSEGV)
 
 AC_SUBST(CFLAGS)
 AC_SUBST(CXXFLAGS)
@@ -1413,7 +1434,9 @@ if test $RECURSIVE = yes; then
 	AC_CONFIG_SUBDIRS(tools/$ICONV)
 	AC_CONFIG_SUBDIRS(tools/$SQLITE)
 	AC_CONFIG_SUBDIRS(tools/$UNITS)
-	AC_CONFIG_SUBDIRS(tools/$SIGSEGV)
+	if test x$BUILD_SIGSEGV = x$SIGSEGV; then
+		AC_CONFIG_SUBDIRS(tools/$SIGSEGV)
+	fi
 fi
 
 AC_CONFIG_FILES(Makefile)