Alexey Neyman 862c35457d Fix build of glibc 2.29 on systems with obsolete host programs
- Force building make as a companion tool if host make is older than
4.0 (CentOS 7 currently has 3.82)
- Disable 2.29 as a choice if host python is older than 3.4
(CentOS 7 has 2.6 unless python from EPEL is installed)
- Python2 emits its version information to STDERR. Ugh.

While there, also use the detected host Python for GDB configuration.

Signed-off-by: Alexey Neyman <stilor@att.net>
2019-03-02 15:45:37 -08:00
..
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These autoconf helper macros come from various sources:

- ax_*.m4: autoconf-archive, version 2017.09.28 (copied)
- pkg.m4: pkg-config, version 0.29.2 (run configure, then copy)
- gettext.m4, iconv.m4, intlmacosx.m4, nls.m4: gettext 0.19.8
- ctng_*.m4: obviously, implemented anew
- po.m4: a local dummy stub for gettext's version