Le 15.07.17 à 01:14, Rene Rivera via Boost a écrit :

On Fri, Jul 14, 2017 at 7:23 AM, Raffi Enficiaud via Boost-users < boost-users@lists.boost.org> wrote:

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As I said in a previous post, I cannot get boost.python to build on Windows: the target is just ignored (see stack trace below).

Missed that post :-(

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I think there is a bug in .\tools\build\src\tools\python.jam

A highly probable statement all on its own :-)

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concerning the version computation: the variable "major-minor" is not set properly if "version" is optional.

In this block:

============= ("rule configure") if $(version) { if ! $(version) in [ feature.values python ] { feature.extend python : $(version) ; py$(major-minor[1])-version ?= $(version) ; =============

The variable "major-minor" is empty.

The "if" in the following block prevents from computing major-minor as "version" is optional and is not set:

============= local major-minor ; if $(version) { major-minor = [ split-version $(version) ] ; version = $(major-minor:J=.) ; } =============

I believe this can be fixed by recomputing "major-minor" in this block, after "version" has been inferred.

============= if $(cmd) { debug-message ...requested configuration matched! ;

exec-prefix = $(sys.exec_prefix) ;

compute-default-paths $(target-os) : $(sys.version) : $(sys.prefix) : $(sys.exec_prefix) ;

version = $(sys.version) ; interpreter-cmd ?= $(cmd) ; cmds-to-try = ; # All done. } =============

Seems reasonable.. Can you put up a PR for that?

There we go: https://github.com/boostorg/build/pull/212 This fixes my problem on Windows, but I have not tried on other platforms. Cheers, Raffi