Restore language about 2.6 portability, clean up Python imports.

1 files changed, 6 insertions, 5 deletions

diff --git a/build.txt b/build.txt
index 36a00943..7ee30338 100644
--- a/build.txt
+++ b/build.txt
@@ -55,9 +55,9 @@ is included at the end of this file.
 Necessary components for any build:
 
 |============================================================================
-|C compiler         | gpsd and client library are written in C
-|Python 2.x, x >= 7 | some code is generated from python scripts
-|scons              | for executing the build recipe
+|C compiler                    | gpsd and client library are written in C
+|Python 2.x(x>=6) or 3.y(y>=3) | some code is generated from python scripts
+|scons                         | for executing the build recipe
 |============================================================================
 
 === C compiler ===
@@ -66,7 +66,7 @@ C99 conformance is required in the compiler. The C code depends on one
 C11 feature (supported by GCC, clang, and pretty much any C compiler
 that also speaks C++): anonymous unions.  We could eliminate these,
 but the cost would be source-level interface breakage if we have to
-move structure members in and out of unions.
+move certain structure members in and out of unions.
 
 Some portions of the code using shared-memory segments are improved by
 the C11 stdatomic.h features for lockless concurrency.  These are: the
@@ -87,7 +87,8 @@ clang produces a gpsd that passes all regression tests.
 
 === Python ===
 
-You will need Python 2.5 or later for the build.
+You will need Python 2.x at minor version 6 or later or Python 3 at
+at minor version 3 or later.
 
 While Python is required to build GPSD from source (the build uses
 some code generators in Python), it is not required to run the service