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dnl Copyright (C) 2012-2020 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl gl_NON_RECURSIVE_GNULIB_PREFIX_HACK LIB_DIR
dnl Adjust configure-set $gl_LIBOBJS and each AC_SUBST'd *_H variable
dnl with a value ending in ".h" to reflect that these files are located
dnl in the directory specified by LIB_DIR.
AC_DEFUN([gl_NON_RECURSIVE_GNULIB_PREFIX_HACK],
[
# Tell AC_LIBSOURCES where to find source files like alloca.c.
AC_CONFIG_LIBOBJ_DIR([$1])
# This hack originated in bison. It is required when using non-recursive
# automake rules to build from gnulib-provided lib/ sources. Hence, LIB_DIR
# is usually simply "lib". Those rules use the list of names like "fchdir.o"
# and "strstr.o" in gl_LIBOBJS. With non-recursive make, we must prefix each
# such file name with the "lib/" prefix. See also build-aux/prefix-gnulib-mk.
gl_LIBOBJS=`echo "$gl_LIBOBJS" | sed -e 's, , $1/,g'`
# Listing the names of the variables to prefix is error-prone.
# Rather, adjust each AC_SUBST'd variable whose name ends in '_H'
# and whose value ends in '.h'.
for ac_var in $ac_subst_vars
do
eval "ac_val=\$$ac_var"
case $ac_var:$ac_val in
*_H:*.h) eval "$ac_var=$1/\$$ac_var";;
esac
done
])
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