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gcc-4.9: How to generate Makefile.in from a modified Makefile.am?


Hi,

With the recent changes of not using automake for the build, only
auto{re}conf I have problems generating an updated Makefile.in from a
modified Makfile.am. Source is gcc-4.9-4.9-20140322

Some failing attempts:

automake 1.14.1: (same with automake-1.11)
(cd src/libgo; automake -if)
aclocal.m4:16: warning: this file was generated for autoconf 2.64.
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'.
config/go.m4:10: error: m4_copy: won't overwrite defined macro:
AC_LANG_CONFTEST(Go)
config/go.m4:10: the top level
autom4te: /usr/bin/m4 failed with exit status: 1
automake: error: autoconf failed with exit status: 1


autoconf 2.69:
(cd src/libgo;autoreconf -fi)
config/go.m4:10: error: m4_copy: won't overwrite defined macro:
AC_LANG_CONFTEST(Go)
config/go.m4:10: the top level
autom4te: /usr/bin/m4 failed with exit status: 1
aclocal: error: echo failed with exit status: 1
autoreconf: aclocal failed with exit status: 1

(cd src/libgo;autoreconf2.64 -fi)
configure.ac:22: error: Autoconf version 2.65 or higher is required
/usr/share/aclocal-1.14/init.m4:29: AM_INIT_AUTOMAKE is expanded from...
configure.ac:22: the top level
autom4te2.64: /usr/bin/m4 failed with exit status: 63
aclocal: error: echo failed with exit status: 63
autoreconf2.64: aclocal failed with exit status: 63



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