+dnl CF_LD_SEARCHPATH version: 2 updated: 2019/09/26 20:34:14
+dnl ----------------
+dnl Try to obtain the linker's search-path, for use in scripts.
+dnl
+dnl Ignore LD_LIBRARY_PATH, etc.
+AC_DEFUN([CF_LD_SEARCHPATH],[
+AC_CACHE_CHECK(for linker search path,cf_cv_ld_searchpath,[
+
+if test "$cross_compiling" != yes ; then
+
+# GNU binutils' ld does not involve permissions which may stop ldconfig.
+cf_pathlist=`ld --verbose 2>/dev/null | grep SEARCH_DIR | sed -e 's,SEARCH_DIR[[("=]][[("=]]*,,g' -e 's/"[[)]];//gp' | sort -u`
+
+# The -NX options tell newer versions of Linux ldconfig to not attempt to
+# update the cache, which makes it run faster.
+test -z "$cf_pathlist" && \
+ cf_pathlist=`ldconfig -NX -v 2>/dev/null | sed -e '/^[[ ]]/d' -e 's/:$//' | sort -u`
+
+test -z "$cf_pathlist" &&
+ cf_pathlist=`ldconfig -v 2>/dev/null | sed -n -e '/^[[ ]]/d' -e 's/:$//p' | sort -u`
+
+# This works with OpenBSD 6.5, which lists only filenames
+test -z "$cf_pathlist" &&
+ cf_pathlist=`ldconfig -v 2>/dev/null | sed -n -e 's,^Adding \(.*\)/.*[$],\1,p' | sort -u`
+
+if test -z "$cf_pathlist"
+then
+ # dyld default path with MacOS
+ if test -f /usr/bin/otool && test "x`uname -s`" = xDarwin
+ then
+ # do this to bypass check
+ cf_cv_ld_searchpath='$HOME/lib'
+ cf_pathlist="/usr/local/lib /lib /usr/lib"
+ fi
+fi
+
+if test -z "$cf_pathlist"
+then
+ # Solaris is hardcoded
+ if test -d /opt/SUNWspro/lib
+ then
+ cf_pathlist="/opt/SUNWspro/lib /usr/ccs/lib /usr/lib"
+ elif test -d /usr/ccs/lib
+ then
+ cf_pathlist="/usr/ccs/lib /usr/lib"
+ fi
+fi
+
+fi
+
+# If nothing else, assume it is conventional
+test -z "$cf_pathlist" && cf_pathlist="/usr/lib /lib"
+
+# Finally, check that this is only directories
+for cf_path in [$]0 $cf_pathlist
+do
+ if test -d "$cf_path"; then
+ test -n "$cf_cv_ld_searchpath" && cf_cv_ld_searchpath="${cf_cv_ld_searchpath} "
+ cf_cv_ld_searchpath="${cf_cv_ld_searchpath}${cf_path}"
+ fi
+done
+
+# Ensure that it is nonempty
+test -z "$cf_cv_ld_searchpath" && cf_cv_ld_searchpath=/usr/lib
+])
+
+LD_SEARCHPATH=`echo "$cf_cv_ld_searchpath"|sed -e 's/ /|/g'`
+AC_SUBST(LD_SEARCHPATH)
+])dnl
+dnl ---------------------------------------------------------------------------