Use Autoconf to find path to ldconfig.

Make.rules.in

@@ -38,6 +38,7 @@ AR        = ar rc
 RM        = rm -f
 MKDIR     = mkdir -p
 C2MAN     = @C2MAN@
+LDCONFIG  = @LDCONFIG@
 MANSPECS  = -w $(TOPSRCDIR)/relay32/gdi32.spec \
 	    -w $(TOPSRCDIR)/relay32/user32.spec \
 	    -w $(TOPSRCDIR)/relay32/comctl32.spec \

Makefile.in

@@ -202,7 +202,7 @@ install_lib: dummy
 	[ -d $(libdir) ] || $(MKDIR) $(libdir)
 	if [ $(LIB_TARGET) ]; then $(INSTALL_DATA) $(LIB_TARGET) $(libdir); fi
 	if [ -f wine.sym ]; then $(INSTALL_DATA) wine.sym $(libdir)/wine.sym; fi
-	if [ $(LIB_TARGET) = libwine.so.1.0 ]; then ldconfig; fi
+	if [ $(LIB_TARGET) = libwine.so.1.0 ]; then $(LDCONFIG); fi
 
 uninstall_lib: dummy
 	cd $(libdir); $(RM) $(LIB_TARGET) libwine.a libwine.so wine.sym

configure.in

@@ -74,6 +74,7 @@ AC_PROG_RANLIB
 AC_PROG_INSTALL
 AC_PROG_LN_S
 AC_CHECK_PROG(C2MAN,c2man,c2man,true)
+AC_PATH_PROG(LDCONFIG, ldconfig, false, /sbin:/usr/sbin:$PATH)
 
 dnl **** Check for some libraries ****