[Bug bootstrap/77661] --enable-maintainer-mode causes in-tree-build of MPC to fail

[burnus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77661

--- Comment #2 from Tobias Burnus <burnus at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #1)
> Does adding --disable-maintainer-mode to Makefile.def extra_configure_flags
> for MPC help?

Yes, using

--- a/Makefile.def
+++ b/Makefile.def
@@ -65,3 +65,3 @@ host_modules= { module= mpfr; lib_path=src/.libs;
bootstrap=true;
 host_modules= { module= mpc; lib_path=src/.libs; bootstrap=true;
-               extra_configure_flags='--disable-shared
@extra_mpc_gmp_configure_flags@ @extra_mpc_mpfr_configure_flags@';
+               extra_configure_flags='--disable-shared
@extra_mpc_gmp_configure_flags@ @extra_mpc_mpfr_configure_flags@
--disable-maintainer-mode';
                no_install= true; };

(Makefile.in will then get the changed by regenerating it.)