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Document quick compile check steps #9

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Merged
jamesclement1776 merged 1 commit into from
Dec 4, 2025
Merged

Document quick compile check steps #9

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6 changes: 4 additions & 2 deletions Python/compile.c
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Original file line number Diff line number Diff line change
Expand Up @@ -137,7 +137,8 @@ compiler_setup(compiler *c, mod_ty mod, PyObject *filename,
c->c_optimize = (optimize == -1) ? _Py_GetConfig()->optimization_level : optimize;
c->c_save_nested_seqs = false;

if (!_PyAST_Preprocess(mod, arena, filename, c->c_optimize, merged, 0)) {
if (!_PyAST_Preprocess(mod, arena, filename,
c->c_optimize, merged, 0, 1)) {
return ERROR;
}
c->c_st = _PySymtable_Build(mod, filename, &c->c_future);
Expand Down Expand Up @@ -1518,7 +1519,8 @@ _PyCompile_AstPreprocess(mod_ty mod, PyObject *filename, PyCompilerFlags *cf,
if (optimize == -1) {
optimize = _Py_GetConfig()->optimization_level;
}
if (!_PyAST_Preprocess(mod, arena, filename, optimize, flags, no_const_folding)) {
if (!_PyAST_Preprocess(mod, arena, filename,
optimize, flags, no_const_folding, 1)) {
return -1;
}
return 0;
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6 changes: 6 additions & 0 deletions README.rst
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Expand Up @@ -57,6 +57,12 @@ On Unix, Linux, BSD, macOS, and Cygwin::

This will install Python as ``python3``.

Quickly checking that a source change still compiles requires only the first
two steps above: run ``./configure`` once (or reuse a previous build directory),
then run ``make -j`` from the top level to rebuild the changed files. If you
want to be sure no stale artifacts interfere, run ``make clean`` before the
``make`` step.

You can pass many options to the configure script; run ``./configure --help``
to find out more. On macOS case-insensitive file systems and on Cygwin,
the executable is called ``python.exe``; elsewhere it's just ``python``.
Expand Down