Reuben Thomas wrote:
> It would be good to document that x-to-1 needs CROSS_COMPILING and PERL set
> up by configure.ac. Or perhaps it's worth a gnulib module?
Good point. I think putting these tests into a Gnulib module 'x-to-1' would
not be the right approach, because
- there are several ways to test for 'perl': with a minimum version and
without,
- there are several ways to test for cross-compilation: Some programs use
AC_PROG_CC, some use AC_PROG_CXX instead.
2023-02-08 Bruno Haible <br...@clisp.org>
x-to-1: Document the configure-time prerequisites.
Suggested by Reuben Thomas <r...@sc3d.org> in
<https://lists.gnu.org/archive/html/bug-gnulib/2023-02/msg00078.html>.
* build-aux/x-to-1.in: Add more comments.
diff --git a/build-aux/x-to-1.in b/build-aux/x-to-1.in
index 50fb5bb2c7..6dc01157f5 100644
--- a/build-aux/x-to-1.in
+++ b/build-aux/x-to-1.in
@@ -35,7 +35,18 @@
#
# Options:
# --update Don't overwrite the output if nothing would change.
-
+#
+# Configure-time prerequisites:
+#
+# PERL Can be set through
+# ac_aux_dir_abs=`cd $ac_aux_dir && pwd`
+# AC_PATH_PROG([PERL], [perl], [$ac_aux_dir_abs/missing perl])
+# or, alternatively, by the Gnulib 'perl' module.
+#
+# CROSS_COMPILING Can be set through
+# CROSS_COMPILING=$cross_compiling
+# AC_SUBST([CROSS_COMPILING])
+# The variable 'cross_compiling' is set by AC_PROG_CC.
update=
while true; do
