Patch to require Python 3.4 or later to build glibc.

This patch makes Python 3.4 or later a required tool for building
glibc, so allowing changes of awk, perl etc. code used in the build
and test to Python code without any such changes needing makefile
conditionals or to handle older Python versions.

This patch makes the configure test for Python check the version and
give an error if Python is missing or too old, and removes makefile
conditionals that are no longer needed.  It does not itself convert
any code from another language to Python, and does not remove any
compatibility with older Python versions from existing scripts.

Tested for x86_64.

	* configure.ac (PYTHON_PROG): Use AC_CHECK_PROG_VER.  Set
	critic_missing for versions before 3.4.
	* configure: Regenerated.
	* manual/install.texi (Tools for Compilation): Document
	requirement for Python to build glibc.
	* INSTALL: Regenerated.
	* Rules [PYTHON]: Make code unconditional.
	* benchtests/Makefile [PYTHON]: Likewise.
	* conform/Makefile [PYTHON]: Likewise.
	* manual/Makefile [PYTHON]: Likewise.
	* math/Makefile [PYTHON]: Likewise.

1 files changed, 0 insertions, 7 deletions

diff --git a/benchtests/Makefile b/benchtests/Makefile
index 45aeb5febe..d558db475c 100644
--- a/benchtests/Makefile
+++ b/benchtests/Makefile
@@ -180,14 +180,7 @@ $(error Invalid BENCHSET value)
 endif
 endif
 
-# Define the bench target only if the target has a usable python installation.
-ifdef PYTHON
 bench: bench-build bench-set bench-func bench-malloc
-else
-bench:
-	@echo "The bench target needs python to run."
-	@exit 1
-endif
 
 # Target to only build the benchmark without running it.  We generate locales
 # only if we're building natively.