https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77661
Bug ID: 77661 Summary: --enable-maintainer-mode causes in-tree-build of MPC to fail Product: gcc Version: 7.0 Status: UNCONFIRMED Keywords: build Severity: normal Priority: P3 Component: bootstrap Assignee: unassigned at gcc dot gnu.org Reporter: burnus at gcc dot gnu.org Target Milestone: --- Compiling GCC with in-tree MPC (+ mpfr + gmp + ISL) fails with --enable-maintainer-mode as the latter also updates the configure scripts of those. In particular, the in-tree-build of MPC fails with: make[3]: Entering directory `build/mpc' (CDPATH="${ZSH_VERSION+.}:" && cd ../../mpc && /bin/sh mpc/missing autoheader) aclocal.m4:17: warning: this file was generated for autoconf 2.69. You have another version of autoconf. It may work, but is not guaranteed to. If you have problems, you may need to regenerate the build system entirely. To do so, use the procedure documented by the package, typically 'autoreconf'. configure.ac:27: error: Autoconf version 2.65 or higher is required aclocal.m4:497: AM_INIT_AUTOMAKE is expanded from... configure.ac:27: the top level autom4te: m4 failed with exit status: 63 autoheader: 'autom4te' failed with exit status: 63 WARNING: 'autoheader' is probably too old. You should only need it if you modified 'acconfig.h' or 'configure.ac' or m4 files included by 'configure.ac'. The 'autoheader' program is part of the GNU Autoconf package: <http://www.gnu.org/software/autoconf/> It also requires GNU m4 and Perl in order to run: <http://www.gnu.org/software/m4/> <http://www.perl.org/> make[3]: *** [../../mpc/config.h.in] Error 63 make[3]: Leaving directory `build/mpc'